POLYISOCYANATES AND PREPOLYMERS: … · SCIENCE FOR A BETTER LIFE BAYER MATERIALSCIENCE 5 Bayer MaterialScience – the name stands for the materials that the company develops and

UV SYSTEMSPOLYISOCYANATES PREPOLYMERS DISPERSIONS

Bayer MaterialScience AG51368 LeverkusenGermany

[email protected]

This information and our technical advice – whether verbal, in writing or by way of trials – is given in good faith but

without a warranty, and this also applies where proprietary rights of third parties are involved. It does not release

you from the obligation to test the products supplied by us as to their suitability for the intended processes and

uses. The application, use and processing of the products are beyond our control and, therefore, entirely your own

responsibility. We will only sell our products on the basis of our General Conditions of Sale and Delivery.

Edition: 2012-03 · Order-No.: MS00048820 · Printed in Germany · E

PO LY I SO C YANAT E S A ND P R E PO LYMER S : P RODUC TS A ND A P P L I C AT I ON S

3POLYISOCYANATESPREPOLYMERS

Bayer MaterialScience

SCIENCE FOR A BETTER LIFE 4

Business Unit CAS

CLOSE TO THE CUSTOMER 5

Polyisocyanates and Prepolymers

GRADES WITH SHINING PROPERTIES 6

Applications

HIGHLIGHTS 7

TDI-based

DESMODUR® 8

MDI-based

DESMODUR® 12

PMDI-based

DESMODUR® 14

Silane-terminated

DESMOSEAL® 14

MDI-based prepolymers

DESMODUR®/DESMOSEAL® M 16

Aliphatic isocyanates

DESMODUR® 18

HDI-based

DESMODUR® N 18

IPDI-based

DESMODUR® Z 22

Aliphatic prepolymers

DESMODUR® 24

C O N T E N T S

Hydrophilic modified polyisocyanates

BAYHYDUR® 26

Hydrophilic modified polyisocyanates

DESMODUR® D 28

Special types water based

DESMODUR® 28

Special types

DESMODUR® R 28

Blocked grades

DESMODUR® BL 30

Solvent-free blocked urethane resins

DESMOCAP® 32

Self-crosslinking baking urethane resins

DESMOTHERM® 32

Water-based blocked grades

BAYHYDUR® BL 34

Water-based self-crosslinking baking urethane resins

BAYHYTHERM® 34

Powder hardeners

CRELAN® 36

More than just products

SUSTAINABILITY@CAS 38

We are where you are

GLOBAL PARTNERSHIPS 39

SCIENCE FOR A BETTER LIFEB A Y E R M A T E R I A L S C I E N C E

5

Bayer MaterialScience – the name stands for the

materials that the company develops and pro-

duces. Bayer MaterialScience also stands for

the know-how and expertise of its employees all

over the world. With growth products, excellent

technologies and a well-stocked innovation

pipeline, Bayer MaterialScience aims to extend

its market leadership. In pursuing this goal, our

employees, society as a whole and the environ-

ment are accorded just as much importance as

the well-being of the company.

Material: The materials we develop. For new

products and new markets. With our expertise

as innovator in polymer materials, we know how

to turn innovations into real-world applications

for our customers.

Science: The knowledge on which our work is

based. Our intuitive feeling for research with

perspective has developed over several deca-

des. Together with a global network of interdis-

ciplinary thinking, it provides the driving force

for leading-edge, innovative and sustainable

solutions.

CLOSE TO THE CUSTOMER

The Coatings, Adhesives, Specialties Business

Unit (BU CAS) offers a comprehensive range of

raw materials for system solutions in these sec-

tors.

Our products are based primarily on

polyurethane chemistry. Its outstanding expertise

and long years of experience make Bayer

MaterialScience one of the world’s leading suppli-

ers in this field.

CAS raw materials are used in wide range of appli-

cations. Products formulated with these materials

protect aircraft, railcars, ships and even oil plat-

forms against the effects of weather and corro-

sion. They also help ensure that red wine, clean-

ing agents and other “attackers” cannot harm fur-

niture or parquet flooring. CAS raw materials can

even be used to provide concrete with lasting pro-

tection against abrasion and weathering.

Another area of application for BU CAS products

is the formulation of adhesives, in particular in

the shoe, furniture, automotive and construction

industries. We also offer sealant raw materials for

use primarily in the construction industry.

In all the activities of the Coatings, Adhesives,

Specialties Business Unit (CAS), the customer is

key. To enable it to offer the right solution for every

field of application, CAS is focused on the strate-

gic segments: Polyisocyanates and Prepolymers,

Dispersions and UV systems. In each of these seg-

ments, customers can benefit from our wide-rang-

ing experience and long-standing know-how. For

us as technology leaders, the development of

innovative solutions for and with our customers is

one of our core competencies.

Thanks to our great innovative strength, we are

not only naturally focused on the demands of

existing markets, but also want to create and tap

into new markets. Our success in this respect is

based on intensive research work in our own

modern laboratories and constant dialogue with

our customers. Even though we discovered

polyurethanes and are the technology leader for

polyurethane-based coatings and adhesive raw

materials, we are constantly working to expand

and improve our unrivalled expertise.

We are wholeheartedly committed to developing

solutions for and with our customers, and to

delivering tailor-made products and pioneering

process innovations.

This brochure contains a wealth of information

about the wide variety of potential applications

and products from the field of polyisocyanate

and prepolymer systems.

B U S I N E S S U N I T C A S

POLYISOCYANATESPREPOLYMERS

Innovation is our tradition. With the break-

through discovery of the polyisocyanate-poly-

addition process in 1937 by Otto Bayer, Bayer

became a pioneer of polyurethane chemistry.

50 years ago, Bayer AG developed the first

applications using polyisocyanates for the coa-

tings and adhesives sectors. Polyurethane

systems – also known as “DD coatings” – have

established themselves in a number of appli-

cations. We work closely with our customers to

systematically advance the state of polyure -

thane technology. Using market-oriented re -

sea rch and development, we specifically adapt

our product portfolio to the increasingly strin-

gent requirements of our customers. We want

to continue our successful journey along this

path with you.

Our polyisocyanates comprise a broad range of

products for one and two-component (1K, 2K)

polyurethane systems used in numerous appli-

cations. Whether crosslinkers for two-compo-

nent polyurethane coatings and adhesives,

blocked polyisocyanates for one-component

polyurethane baking coatings or hydrophilized

polyisocyanates as crosslinkers for water-redu-

cible polyurethane systems: Our products are

used wherever crosslinking is used to achieve

high resistances and reliable adhesion under

efficient conditions.

Our solutions are in use today in a variety of

applications, such as automotive OEM and refi-

nish and the coating of transportation vehicles,

wood, industrial goods and plastics. They are

also used in reactive adhesives, textile coatings

and anti-corrosion coatings.

Gloss, leveling, scratch resistance, hardness

and flexibility can be precisely adjusted by the

choice of polyisocyanate and polyol. Chemical

resistance, adhesion, light stability and weathe-

rability are additional properties that can be

individually adapted to the respective require-

ments. With a bit of clever formulation, coatings

with easy-to-clean, soft-touch or reflow proper-

ties can also be produced.

Our product range of prepolymers comprise aro-

matic and aliphatic NCO-terminated as well as

silane terminated products. With these prepoly-

mers properties of coatings, adhesives and sea-

lants can be varied over a wide range.

Typical areas of application include wood coa-

tings, corrosion protection, floor coatings, ela-

stic adhesives in transportation, parquet adhe-

sives, engeneered wood construction, flexible

film lamination and sealants.

Prepolymers with a low fraction of non-polymer-

bound components open up formulation opti-

ons for the productions of reactive polyurethane

adhesive and sealants, that are not subject of

labelling requirements.

GRADES WITH SHINING PROPERTIESP O L Y I S O C Y A N A T E S A N D P R E P O L Y M E R S :

HIGHLIGHTS A P P L I C A T I O N S

… Marine coatings … Coatings of glass … Floor coatings

... Adhesives for modern timber constructions … Coating of wood and furniture … Coating of agriculture equipments

... Sealant applications … Automotive coatings … Coatings of plastics

7POLYISOCYANATES

9

for coatings and adhesives

MONOMERIC TDI PRODUCTS

NCO 2,4-TDI Visc. at 25°C Functionality Equivalent HC max./Acidity

approx. [wt. %] Content [wt. %] approx. [mPa·s] weight approx. max. [ppm HCl] Properties & Applications

Desmodur® T65N 48 67.0 3 2 90 100/40

Desmodur® T80 48 80.5 3 2 90 100/40 Stabilizer: Irganox 1076 FD

Desmodur® T100 48 › 99.0 3 2 90 100/40 Stabilizer: Irganox 1076 FD

DESMODUR® – TDI-BASED*

Supply form NCO(supply form) Equivalent Visc. at 23°C Corrosion Wood Floor

Type approx. [%] approx. [%] weight approx. approx. [mPa·s] protection Industrial furniture wall Plastics Properties & Applications

L 75 TDI Adduct 75 EA 13.3 315 1,600 � � � � Standard crosslinker with broad range of applications, e.g. chemically

resistant coatings, anti-corrosion coatings, industrial coatings, wood

and furniture finishes, concrete coatings

L 67 MPA/X TDI Adduct 67 MPA/X 11.9 350 1,600 � � � � See L 75

L 67 BA TDI Adduct 67 BA 11.9 350 600 � � � � See L 75

L 1470 TDI Adduct 70 EA 9.8 430 1,920 � � � � See L 75

IL BA TDI Isocyanurate 51 BA 8.0 525 2,000 � � Very hard and very fast-drying coatings for wood, furniture and paper

IL EA TDI Isocyanurate 51 EA 8.0 525 700 � � See IL BA

IL 1351 TDI Isocyanurate 51 BA 8.0 525 1,600 � � See IL BA

IL 1351 EA TDI Isocyanurate 51 EA 8.0 525 350 � � See IL BA

IL 1451 TDI Isocyanurate 51 BA 7.4 565 250 � � Like Desmodur® IL 1351 but with improved compatibility

IL 1451 EA TDI Isocyanurate 51 EA 7.4 565 110 � � Like Desmodur® IL 1351 but with improved compatibility

HL BA TDI/HDI Isocyanurate 60 BA 10.5 400 2,200 � � � Very fast-drying coatings for wood, furniture, metal, plastic and paper

with better elasticity than Desmodur® IL and better lightfastness

HL EA TDI/HDI Isocyanurate 60 EA 10.5 400 1,100 � � � See HL BA

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especially suitablesuitable

* These products represent only an assortment of TDI and MDI-based products primarilyused in coatings applications. Additonal TDI and MDI-based products can be found e. g.on the BMS-CAS internet site: www.bayercoatings.com

POLYISOCYANATES

1 1

PREPOLYMERS BASED ON TDI

NCO Solids content Monomer content Viscosity Viscosity at Colour index Functionality* Equivalent

Product approx. [wt. %] [approx. %] Solvent [wt. %] approx. [mPa·s] temperature [°C] [Iodine] weight approx. Applications & Properties

Desmodur® E 15 4.4 100 – ‹ 0.5 7,000 23 n. m. LF 955 Polyether-based prepolymer for flexible coatings and membranes,

Desmodur® E 14 3.3 100 – ‹ 0.5 6,800 23 n. m. LF 1,270 Polyether-based prepolymer for flexible coatings and membranes,

flexibilization in anti-corrosion protection

Desmodur® E 1361 MPA/X 6.8 61 MPA/X ‹ 0.5 500 23 ≤ 3 SF 615 Fast drying 1K moisture-curing coatings, good resistance

Desmodur® E 1361 BA 6.8 61 BA ‹ 0.5 250 23 ≤ 3 SF 615 See E 1361 MPA/X

Desmodur® E 1160 5.4 60 MPA/X ‹ 0.5 550 23 ≤ 3 LF 775 1K moisture-curing coatings with good resistance properties

Desmodur® E 1750 PR 5.4 50 MPA/X ‹ 0.5 375 23 ≤ 2 LF 775 See E 1361 MPA/X

Desmodur® E 1660 5.3 60 BA ‹ 0.5 1,600 23 n. m. LF 790 1K moisture-curing coatings in combination with other

Desmodur® E types: good resistance properties and very fast drying

Desmodur® E XP 2605 4.3 50 BA ‹ 0.5 175 23 n. m. LF 975 Very fast drying 1K moisture-curing clear coatings, good resistance,

wood and furniture applications

* LF = Low functionality (2.0 – 2.8)SF = Standard functionality (2.8 – 3.6)HF = High functionality (> 3.6)n. m. = not measured

DESMODUR® prepolymers are reaction products of aromatic or aliphatic isocyanates and polyols

such as polyethers or polyesters. Due to the wide variability of the isocyanate content and function-

ality, the viscosity of the prepolymers and the mechanical properties of the finished products can

be precisely adjusted.


1 3

for coatings and adhesives

MONOMERIC MDI PRODUCTS

NCO Viscosity Viscosity at Functionality Equivalent HC max./Acidity

Product approx. [wt. %] approx. [mPa·s] temperature [°C] weight approx. max. [ppm CI-/HCI] Properties & Applications

Desmodur® 44M liquid 33.6 4.1 40 2 125 50/– Flexible packaging, hotmelts, sealants; additional supply form: fused and flakes

Desmodur® 44MC liquid 33.6 4.1 40 2 125 60/– Hotmelts, sealants, prepolymer stability (++); additional supply form: fused and flakes

Desmodur® 44MN liquid 33.6 4.1 40 2 125 25/– Flexible packaging

Desmodur® LS2424 33.6 12 25 2 125 50/– Flexible packaging, hotmelts, approx. 55 % 2,4'-MDI/45 % 4,4'-MDI

Desmodur® 2460M 33.6 12 25 2 125 50/– Flexible packaging, hotmelts, approx. 55 % 2,4'-MDI/45 % 4,4'-MDI

colour stabilized

Desmodur® CD-S 29.5 35 25 2 – 50/– Hotmelts, sealants, modified monomeric MDI, liquid at room

temperature, storage stable at low temperatures

Desmodur® CD-L 29.5 35 25 2 – 50/– Flexible packaging, modified monomeric MDI, liquid at room tem-

perature, near to food applications, storage stable at low temperatures

POLYISOCYANATES

POLYMERIC MDI PRODUCTS (PMDI PRODUCTS)**

NCO Viscosity Viscosity at Functionality* Equivalent HC max./Acidity

Product approx. [wt. %] approx. [mPa·s] temperature [°C] weight approx. max. [ppm CI-/HCI] Properties & Applications

Desmodur® VK5 32.5 22.5 25 LF 130 –/600 Prepolymers, high 2,4'-MDI content, good compatibility with polyethers

Desmodur® VK10 31.5 90 25 LF 135 –/1200 One- & two-component adhesives, high 2,4'-MDI content, low PMDI

content, good compatibility with polyethers

Desmodur® VK10L 31.5 90 25 LF 135 –/1000 One- & two-component adhesives, high 2,4'-MDI content, low PMDI content,

good compatibility with polyethers, lower reactivity than Desmodur® VK 10

Desmodur® VLR10 31.5 120 25 SF 135 –/200

Desmodur® VKS20 31.5 200 25 SF 135 –/200 Standard two-component adhesives

Desmodur® VKS20F 31.5 200 25 SF 135 –/200 Standard two-component adhesives (exact specification on request)

Desmodur® VKS20FH 31.5 200 25 SF 135 –/150 Standard two-component adhesives (exact specification on request)

Desmodur® XP2404 31.5 200 25 SF 135 –/200 Standard two-component adhesives

Desmodur® 44V70L 31.3 680 25 SF 135 –/500

* LF = Low functionality (2.0 – 2.8)SF = Standard functionality (2.8 – 3.6)HF = High functionality (> 3.6)

** These products represent only an assortment of TDI and MDI-based products primarilyused in coatings applications. Additonal TDI and MDI-based products can be found e. g.on the BMS-CAS internet site: www.bayercoatings.com

1 5

DESMODUR® – PMDI-PRODUCTS*

Supply form NCO (supply form) Equivalent Visc. at 25°C Floor Corrosion

Type approx. [%] approx. [%] weight approx. approx. [mPa·s] Auto OEM wall protection Properties & Applications

VL MDI polyisocyanate Solvent-free 31.5 135 90 � � � Crosslinker for solvent-free coatings, sealants and membranes

VL 50 MDI polyisocyanate Solvent-free 32.5 130 23 � � � Very low viscosity; same applications as Desmodur® VL but better

compatibility with polyethers and lower reactivity; more flexible

VL 51 MDI polyisocyanate Solvent-free 32.5 130 22 � See VL 50

VL R 10 MDI polyisocyanate Solvent-free 31.5 135 120 � � Higher reactivity than Desmodur® VL; for solvent-free spray coatings

and membranes

VL R 20 MDI polyisocyanate Solvent-free 31.5 135 200 � � See VL R 10

VL R 21 MDI polyisocyanate Solvent-free 31.5 135 200 � Lower reactivity than Desmodur® VL R 20;

for solvent-free coatings and membranes

XP 2551 MDI polyisocyanate Solvent-free 32 130 60 � Crosslinker primarily for Desmolith® systems

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* These products represent only an assortment of TDI and MDI-based products primarilyused in coatings applications. Additonal TDI and MDI-based products can be found e. g. on the BMS-CAS internet site: www.bayercoatings.com

DESMODUR® VL Family-crosslinkers for solvent-free two-component polyurethane coatings for

anti-corrosion and construction applications.

DESMOSEAL® S are silane terminated polyurethanes (STPs) which combine properties of polyu r e -

thanes with those of silicones to give a new class of prepolymers. These prepolymers are primarily

designed to act as binders for moisture-curing sealants and elastic adhesives. They are high molec-

ular weight prepolymers consisting of a polyurethane-backbone and a trifunctional silane end group.

POLYISOCYANATES

SILANE-TERMINATED POLYURETHANES

Viscosity

Solids content at 23 °C Molecular

Product [%] Plasticizer approx. [mPa·s] weight Applications & Properties

Desmoseal® S XP 2636 100 – 40,000 High Sealants & adhesives, soft, low modulus prepolymer for sealants,

good elastic recovery, high elongation at break

Desmoseal® S XP 2458 90 Mesamoll 35,000 Medium Sealants & adhesives, medium to high modulus prepolymer for

elastic adhesives, high cohesive strength, good elongation at break

Desmoseal® S XP 2749 100 – 4,500 Low Adhesives & coatings, medium to high modulus prepolymer for

adhesives, primer, waterproofing membranes, good elastic properties,

low elongation at break

1 7

DESMODUR® AND DESMOSEAL® M prepolymers are the reaction products of aromatic or ali-

phatic isocyanates and polyols such as polyethers or polyesters. Due to the wide variability of the

building blocks, isocyanate content and functionality, the viscosity of the prepolymers and the

mechanical properties of the finished products can be precisely adjusted.

PREPOLYMERS BASED ON MDI

NCO Viscosity Viscosity at Functionality* Equivalent

Product approx. [wt. %] approx. [mPa·s] temperature [°C] weight approx. Applications & Properties

Desmodur® VH 20 N 24.5 280 25 LF 170 Gymnasium floors, storage stable at low temperatures

Desmodur® E 29 24.0 220 25 LF 175 Primer for flooring applications, binder for corrosion protection

Desmodur® PF 23.0 600 25 LF 180 Hot melts, modified monomeric MDI, liquid at room temperature,

storage stable at low temperatures

Desmodur® E XP 2753 21.5 400 23 LF 195 Corrosion protection e.g. pipe coatings

Desmodur® E21 16 5,400 25 SF 260 Wood bonding, binder for corrosion protection

Desmodur® XP 2665 15.8 5,250 25 LF 265 Wood bonding, higher reactivity compared to Desmodur® E21

Desmodur® E 20100 15.7 1,100 23 LF 265 Injection resin for sealing water-conveying cracks in structures

above and below ground

Desmodur® E XP 2723 15.4 1,500 25 LF 270 1K and 2K adhesives

Desmodur® E 23 15.4 1,800 23 LF 270 Wood bonding, flexible packaging, binder for corrosion protection

Desmodur® E XP 2727 15.3 800 23 LF 275 1K and 2K binder for corrosion protection and adhesives

Desmodur® E XP 2715 15.1 910 70 LF 280 Intermediate for binders or hardener for coatings and adhesives. Raw material for the formula-

tion of low monomer containing reactive PUR hot melts.

Desmodur® E 2200/76 9.9 2,750 25 LF 425 Flexible packaging

Desmodur® E 22 8.6 2,800 23 LF 490 Bonding of granulated rubber

Desmodur® E XP 2726 6.0 4,500 23 LF 700 Elastic 1K and 2K coatings, sealants and adhesives

Desmoseal® M 280 2.1 33,000 23 LF 2,000 Sealants, elastic adhesives

NCO Viscosity Viscosity at Functionality* Equivalent

Low free monomer product approx. [wt.%] approx. [mPa·s] temperature [°C] weight approx. Applications & Properties

Desmodur® VPLS2397 5.6 10,000 ±2000 50 LF 750 Flexible packaging hot melts, polyether-based prepolymer


* LF = Low functionality (2.0 – 2.8)SF = Standard functionality (2.8 – 3.6)HF = High functionality (> 3.6)

19POLYISOCYANATES

ALIPHATIC ISOCYANATES – MONOMERS

NCO Free monomer Viscosity Viscosity at Colour index Functionality Equivalent

Product approx. [wt. %] content [wt. %] approx. [mPa·s] temp. [°C] [Hazen] weight approx. Properties & Applications

Desmodur® H ≥ 49.7 – 3 25 ≤30 2.0 85 HDI

Desmodur® I ≥ 37.5 – 10 25 ≤30 2.0 110 IPDI

Desmodur® W/1 ≥ 31.8 – 30 25 ≤30 2.0 130 H12MDI

DESMODUR® N FAMILY:

Hardeners for high-performance two-component polyurethane coatings with excellent weatherabili-

ty and resistance properties.

(CH2)6 N

NH

O

O

NH

(CH2)6

(CH2)6

OCN

NCO

NCO

DESMODUR® N – HDI-BASED – BIURET

DESMODUR® N – HDI-BASED – TRIMER

NCO content Viscosity Auto-refinish

Supply form on supply form Equivalent at 23°C Auto large Industrial Wood Plastic Parquet Floor Corrosion

Type approx. [%] approx. [%] weight approx. approx. [mPa·s] OEM vehicles coatings furniture coatings trade wall protection Properties & Applications

N 100 HDI biuret Solvent-free 22.0 190 10,000 � � � � � � � � Weather-stable and non-yellowing topcoats

N 75 MPA/X HDI biuret 75 MPA/X 16.5 255 250 � � � � � � � � Outstanding weather stability and gloss retention, no yellowing; for air-

and force-drying automotive, wood, furniture, industrial and plastics

coatings, anti-corrosion coatings and chemically resistant coatings

N 75 MPA HDI biuret 75 MPA 16.5 255 250 � � � � � � � � See N 75 MPA/X

N 75 BA HDI biuret 75 BA 16.5 255 160 � � � � � � � � See N 75 MPA/X

N 3200 HDI biuret Solvent-free 23.0 185 2,500 � � � � � � � � Lower viscosity than Desmodur® N 100; especially for weather-stable

and non-yellowing high-solids coatings, structural coatings and topcoats

N 3300 HDI isocyanurate Solvent-free 21.8 195 3,000 � � � � � � � � Outstanding weather stability and gloss retention, non-yellowing;

for automotive OEM, automotive refinish, plastics and industrial

coatings, structural coatings and topcoats

N 3390 BA/SN HDI isocyanurate 90 BA/SN 19.6 215 550 � � � � � � � � See N 3300

N 3390 BA HDI isocyanurate 90 BA 19.6 215 500 � � � � � � � � See N 3300

21

DESMODUR® N – HDI-BASED – TRIMER

DESMODUR® N – HDI-BASED – SPECIALTIES




N 3600 HDI isocyanurate Solvent-free 23.0 185 1,200 � � � � � � � � Low-viscosity crosslinker for weather-stable and non-yellowing

high-solids and waterborne coatings for automotive refinishing,

automotive OEM and industrial applications; also for structural

coatings and topcoats

N 3790 BA HDI isocyanurate 90 BA 17.8 235 1,800 � � � � � � Highly functional crosslinker for fast-drying, weather-stable and

non-yellowing 2K-PUR coatings for automotive refinishing,

automotive OEM and industrial applications

N 3800 HDI isocyanurate Solvent-free 11.0 380 6,000 � � � For highly elastic coatings with resistance to accelerated and outdoor

weathering; combination with suitable polyisocyanates allows

variation of the elasticity using the same polyol mill base

N 3900 HDI iminooxadiazine dione Solvent-free 23.5 180 730 � � � � � � � � Low-viscosity crosslinker for lightfast 2K-PUR coatings (high-solids/

waterborne e.g. in combination with Bayhydur® types) for automotive

refinishing, automotive OEM, transportation and plastics finishing

applications

XP 2675 HDI isocyanurate Solvent-free 20.0 210 16,000 � � � � � Solvent-free, highly functional crosslinker for solvent-free 2K

applications, outstanding weather-stability and gloss retention,

non-yellowing

XP 2580 HDI allophanate Solvent-free 20.0 215 500 � � � � � � � Flexible, low-viscosity crosslinker for weatherstable high-solids and

waterborne 2K-PUR coatings e.g. in combination with Bayhydur® or

Desmudur® types, especially for industrial, automotive

refinishing,transportation and plastic coatings

N 3400 HDI uretdione Solvent-free 21.8 195 150 � � � � Low-viscosity crosslinker for waterborne and solventborne

2K-PUR coatings; also for moisture-curing 1K-PUR systems,

for structural coatings and topcoats

XP 2730 HDI uretdione 100 22.7 185 90 � � � � Lowest viscous polyisocyanate, low isocyanate functionality, reactive

diluent for various polyisocyanates

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DESMODUR® N FAMILY:

Hardeners for high-grade two-component polyurethane coatings with excellent weatherability and

resistance properties.

POLYISOCYANATES

23

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DESMODUR® Z FAMILY:

Fast-drying two-component polyurethane coatings with high chemical resistance.

DESMODUR® Z – IPDI-BASED

DESMODUR® N – HDI-BASED – SPECIALTIES




XP 2679 HDI allophanate/trimer 80 BA 15.4 275 500 � � � � � � Highly functional crosslinker , outstanding weatherstability, gloss and

improved chemical and scratch resistance for automotive OEM,

refinish, plastics and wood coatings

XP 2714 Silane modified HDI poyisocyanate 100 15.9 264 1,350 � � � Crosslinker for improved adhesion


Supply form on supply form Equivalent at 23 °C Auto large Industrial Wood Plastic Parquet Floor

Type approx. [%] approx. [%] weight approx. approx. [mPa·s] OEM vehicles coatings furniture coatings trade wall Properties & Applications

Z 4470 SN IPDI isocyanurate 70 SN 11.9 360 2,000 � � � Fast-drying hardener for lightfast 2K-PUR coatings with high resistance

to chemicals and weathering. For automotive OEM, refinishing and

industrial applications. On account of its high hardness, Desmodur® Z

is normally mixed with Desmodur® N products

Z 4470 MPA/X IPDI isocyanurate 70 MPA/X 11.9 360 1,500 � � � � See Z 4470 SN

Z 4470 BA IPDI isocyanurate 70 BA 11.9 360 600 � � � � See Z 4470 SN

XP 2565 IPDI allophanate 80 BA 12.0 350 2,800 � � � � Crosslinker for weatherstable, fast-drying high-solids and waterborne

2K-PUR coatings e.g. in combination with Bayhydur® types, for

automotive refinishing and transportation applications

XP 2489 HDI/IPDI polyisocyanate Solvent-free 21.0 200 22,500 � � � Outstanding weatherability, gloss and improved resistance for

automotive OEM and plastics; especially for ulta high solid and

solvent-free applications, e.g. in-mould coating

NZ 1 HDI/IPDI polyisocyanate Solvent-free 20.0 210 3,000 � � Solvent-free crosslinker for lightfast 2K-PUR systems;

as a binder for solvent-free decorative floor coatings

POLYISOCYANATES

25

PREPOLYMERS BASED ON ALIPHATIC ISOCYANATES

NCO Solids content Monomer content Viscosity Viscosity at Colour index Functionality* Equivalent

Product approx. [wt. %] approx. [%] Solvent [wt. %] approx. [mPa·s] temperature [°C] [Iodine] weight approx. Applications & Properties

HD I P R EPO LYMERS

Desmodur® E XP 2747 16.9 100 - < 0.5 2,600 23 n. m. HF 250 1K and 2K adhesives

Desmodur® E 305 12.8 100 - < 0.5 4,000 23 n. m. LF 330 1K and 2K adhesives

Desmodur® XP 2617 12.5 100 - < 0.5 4,250 23 n. m. LF 335 1K and 2K adhesives

Desmodur® XP 2599 6.0 100 - < 0.5 2,500 23 n. m. HF 700 For highly elastic coatings and fast tack-free applications e.g. flooring,

corrosion protection

Desmodur® E 3265 MPA/SN 10.4 65 MPA/SN100 < 0.5 1,200 23 ≤ 4 [Jodine] HF 1,700 Anti-corrosion coatings, good weather stability, non-yellowing,

1K application

Desmodur® E 3370 10.0 70 MPA/SN100 < 0.5 1,400 23 ≤ 80 [Hazen] HF 420 Anti-corrosion coatings, good weather stability, non-yellowing,

1K application

I P D I P R EPO LYMERS

Desmodur® VPLS 2371 3.7 100 - < 2.0 11,000 23 n. m. LF 1,135 Polyether-based prepolymer

Desmodur® XP 2406 2.8 80 MPA < 0.5 7,000 23 ≤ 200 [Hazen] LF 1,500 Elastic coatings and sealants with very good weather stability

DESMODUR® prepolymers based on aliphatic isocyanates like HDI or IPDI show good weather

stability and are colour stable. These unique properties are important for applications such as cor-

rosion protection or non-yellowing coatings and adhesives.


* HF = High functionality (> 3.6)LF = Low functionality (2.0 – 2.8)n. m. = not measured

27POLYISOCYANATES

BAYHYDUR® – HYDROPHILIC MODIFIED POLYISOCYANATES


Supply form on supply form Equivalent at 23 °C Auto large Industrial Glass Wood Plastic Parquet Floor Corrosion

Type approx. [%] approx. [%] weight approx. approx. [mPa·s] OEM vehicles coatings coatings furniture coatings trade wall protection Properties & Applications

3100 Hydrophilic polyisocyanate (HDI) 100 17.4 240 2,800 � � � � � � � � Versatile and economical

304 Hydrophilic polyisocyanate (HDI) 100 18.2 230 4,000 � � � � � � � � � Versatile use, improved mixing

305 Hydrophilic polyisocyanate (HDI) 100 16.2 260 6,500 � � � � � � � � Easy mixing, high gloss

401-70 IPDI type hydrophilic modified 70 MPA/X 9.4 440 600 � � � � � � � � Fast drying, chemical resistant

XP 2451 Hydrophilic polyisocyanate (HDI) 100 18.6 225 1,200 � � � � � Low viscosity, suited for solvent-free formulations

XP 2487/1 Hydrophilic polyisocyanate (HDI) 100 20.6 205 5,400 � � � � � � � � � Highest chemical resistance

XP 2547 Hydrophilic polyisocyanate (HDI) 100 22.5 185 650 � � � � � � � � � Highest chemical resistance, low viscosity, suited for solvent-free

formulations

XP 2655 Hydrophilic polyisocyanate (HDI) 100 21.2 200 3,500 � � � � � � � � � Highest chemical resistance, easy mixing

XP 2700 Hydrophilic polyisocyanate (HDI) 65 PGDME 10.6 400 77 � � � � � � Easy mixing, high gloss

XP 2759 IPDI type hydrophilic modified 70 MPA 11 380 6,500 � � � � � � � � � Fast drying, easy mixing, high chemical resistance

The key to easy and reliable application of waterborne 2K PUR systems

29

DESMODUR® D – HYDROPHILIC MODIFIED POLYISOCYANATES

DESMODUR® R – SPECIAL TYPES

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DESMODUR® D AND R:

Hardeners for reactive, high-performance adhesives.

NCO content Viscosity

Supply form on supply form Equivalent at 23 °C

Type approx. [%] approx. [%] weight approx. approx. [mPa·s] Adhesives Properties & Applications

DA-L Hydrophilic polyisocyanate (HDI) 100 20.0 210 3,000 � Crosslinking agent for OH-functional polymer dispersions including poly-

urethane, polyvinyl acetate, polyacrylate and synthetic rubber disper-

sions. Improves resistance to heat, water, plasticizers and many solvents

DN Hydrophilic polyisocyanate (HDI) 100 21.8 195 1,250 � see DA-L

DESMODUR® – SPECIAL TYPES WATER BASED




XP 2802 Carbodiimide 40 % water 30 � Crosslinking agent for aequous dispersion polymers containing carboxyl

groups. The product is characterized by its long potlife




RC TDI isocyanurate 35 EA 7.0 600 3 � Hardener for 2K-PUR systems, especially for industrial adhesives

applications. Especially pale-coloured adhesives used to bond

rubber materials

RN TDI/HDI isocyanurate 40 EA 7.2 585 11 � Hardener for 2K-PUR systems especially for industrial adhesives

applications. For the use in adhesives to achieve significantly

reduced discoloration on exposure to light

RE Triphenylmethan-4,4’,4”-triisocyanat 27 EA 9.3 450 3 � Hardener for 2K-PUR systems especially for industrial adhesives

applications. Highly effective crosslinker for adhesives based on

Desmocoll®, natural or synthetic rubber, with special adhesion on

rubber materials

RFE Tris (p-isocyanatophenyl) thiophosphat 27 EA 7.2 583 3 � Hardener for 2K-PUR systems especially for industrial adhesives

applications. A crosslinker with very universal suitability for

adhesives based on Desmocoll®, natural or synthetic rubber,

with special adhesion on rubber materials

POLYISOCYANATES

31POLYISOCYANATES

DESMODUR® BL – AROMATIC BLOCKED POLYISOCYANATES

DESMODUR® BL – ALIPHATIC BLOCKED POLYISOCYANATES

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DESMODUR® BL FAMILY:

In combination with Desmophen® types for 1K-PUR stoving systems with high grade polyurethane

properties. Aliphatics types are light-stable and weather-resistant.

Blocked Viscosity

Supply form NCO content on supply Equivalent at 23 °C Auto Industrial Coil Can Glass

Type approx. [%] form approx. [%] weight approx. approx. [mPa·s] OEM coatings coatings coatings coatings Properties & Applications

BL 1100/1 TDI polyisocyanate 100 3.0 1,400 43,000 � � In combination with cycloaliphatic diamines for 1K stoving primers

with high film thickness and good stone-chip resistance

BL 1265 MPA/X TDI polyisocyanate 65 MPA/X 4.8 875 20,000 � � For primers

Blocked Viscosity

Supply form NCO content on supply Equivalent at 23 °C Auto Industrial Coil Can Glass

Type approx. [%] form approx. [%] weight approx. approx. [mPa·s] OEM coatings coatings coatings coatings Properties & Applications

BL 3175 SN HDI polyisocyanate 75 SN 11.1 380 3,300 � � � � � Standard product

BL 4265 SN IPDI polyisocyanate 65 SN 8.1 520 11,000 � � � � � Standard product

BL 5375 H12 MDI polyisocyanate 75 MPA/SN 8.9 470 4,000 � � � High flexibility

BL 3575/1 HDI polyisocyanate 75 SN/MPA 10.5 400 3,600 � � � � Lower thermal yellowing and lowest color value

PL 350 HDI polyisocyanate 75 SN/MPA 10.5 400 4,300 � � � � Lower thermal yellowing

PL 340 IPDI polyisocyanate 60 SN/BA 7.3 575 600 � � � � Lower thermal yellowing

BL 3370 MPA HDI polyisocyanate 70 MPA 8.9 470 3,800 � � � High reactive

BL 3475 BA/SN HD/IPDI polyisocyanate 75 BA/SN 8.2 510 1,000 � � � High reactive

BL 3272 MPA HDI polyisocyanate 72 MPA 10.2 410 2,700 � � � Very high film thickness

VP LS 2078/2 IPDI polyisocyanate 60 SN 7.0 600 2,000 � � � Worldwide first and only polyurethane crosslinker with FDA-Food

Contact Notification, which may be used in combination with FDA-

conform polyol, very high film thickness

33POLYISOCYANATES

DESMOCAP® – SOLVENT-FREE BLOCKED URETHANE RESINS

DESMOTHERM® – SELF-CROSSLINKING BAKING URETHANE RESINS

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SPECIALTY POLYURETHANES

Viscosity Blocked NCO

Supply form at 23 °C content on supply Equivalent Auto Floor Corrosion

Type approx. [%] approx. [mPa·s] form approx. [%] weight approx. OEM wall protection Properties & Applications

Desmocap® 11 TDI-branched prepolymer Solvent-free 100,000 2.4 1,750 � � For elastic coatings and sealants; for the flexibilization of epoxy resins

Desmocap® 1190 TDI-branched prepolymer 90 Adimoll DO 30,000 2.2 1,910 � � For elastic coatings and sealants; for the flexibilization of epoxy resins

Desmocap® 12 TDI-linear prepolymer Solvent-free 40,000 1.6 2,625 � � For elastic coatings and sealants; for the flexibilization of epoxy resins;

stronger flexibilizing effect than Desmocap® 11

Viscosity

Supply form at 23 °C Auto Floor Corrosion

Type approx. [%] approx. [mPa·s] OEM wall protection Properties & Applications

2170 MDI self crosslinking baking urethane resin 70 BA/SN/IB 2,000 � For 1K-PUR baking coatings (primers and primer-surfacers)

VP LS 2218 HDI aliphatic self-crosslinking baking urethane resin 93 BA/SN 11,000 � For high-solids 1K-PUR baking coatings, especially for OEM

primer-surfacers with improved elasticity, impact resistance and

adhesion; also as an additive to improve mechanical film

properties and stone-chip resistance in conventional baking coatings

35DISPERSIONS

BAYHYTHERM® – SELF-CROSSLINKING URETHANE RESINS FOR 1K WATERBORNE STOVING SYSTEMS

BAYHYDUR® BL – BLOCKED POLYISOCYANATES FOR 1K WATERBORNE STOVING SYSTEMS

*

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NMP-free alternatives available


Organic cosolventSupply form Neutral. content [%] in Auto Industrial Can/Glass

Type approx. [%] agent supply form OEM metal coatings Properties & Applications

3146 Aliphatic, self-crosslinking baking urethane resin 46 DMEA NMP 1, SN/MPA 3* � � For OEM primer surfacers with high solids content; also for general industrial coatings

2782 XP Aliphatic, self-crosslinking baking urethane resin 46 DMEA 0 � � For OEM primer surfacers with high solids content; also for general industrial coatings,

solvent-free

Supply form Neutral. Organic cosolvent NCO content Auto Industrial Can/Glass

Type approx. [%] agent content [%] in [%] on solids OEM metal coatings Properties & Applications

BL 2805 XP Blocked, aliphatic polyisocyanate (W/HDI) 39 DMEA 0 10.3 (blocked) � � � Solvent-free alternative to Bayhydur® BL 5140 with similar propertiesformerly LP MXH 1241 B

BL 5335 Blocked, aliphatic polyisocyanate (W) 35 — MPA 4.5/X 4.5 7.1 (blocked) � � In combination with Bayhydrol® U XP 2239 for glass and can coatings with good

alkali resistance

BL 2781 XP Blocked, aliphatic polyisocyanate (HDI) 38 DMEA 0 9.7 (blocked) � � � Solvent-free alternative to Bayhydur® VP LS 2310 with similar properties

formerly LP MXH 1208 A

BL XP 2706 Blocked, aliphatic polyisocyanate (HDI/IPDI) 42 DMEA 0 8.6 (blocked) � � � Solvent-free alternative to Bayhydur® BL 5140 with higher reactivity, excellent

thermostabilty (yellowing) and better chemical resistance

37POLYISOCYANATES

CRELAN® – POWDER HARDENERS

CRELAN®:

Hardeners for high-grade, lightfast powder coatings with polyurethane quality.

Blocked NCO content

on supply form Equivalent Functionality* Standard

Type Supply form Tg [°C] approx. [%] weight approx. approx. bake cycle Properties & Applications

EF 403 Internally blocked linear IPDI polyisocyanate Flakes 40–55 (13.5) internally 310 LF 15 min/180°C For emission-free powder coatings with outstanding levelling and

pigment wetting and for special one-shot matte coatings

UI Blocked linear IPDI polyisocyanate Flakes ›60 (11.5) 365 LF 15 min/180°C For powder coating with good levelling and good pigment wetting

or to improve coating properties of hybrid and TGIC systems

NI-2 Blocked branched IPDI polyisocyanate Prills 55–60 (15.0) 280 LF 15 min/180°C For economical standard powder coatings with good levelling,

good pigment wetting and outstanding corrosion resistance

VP LS 2256 Blocked branched IPDI polyisocyanate Flakes 46–58 (15.0) 280 LF 15 min/180°C For high chemical resistance powder coatings with easy to clean

properties and standard powder coatings with good overall properties

NW-5 Blocked branched W polyisocyanate Prills 48–58 (12.7) 335 LF 15 min/175°C For higher reactive powder coatings with excellent flexibility

and corrosion resistance properties

Crelan®

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= Butyl acetate= Dimethyl ethanol amine= Ethyl acetate= Hexamethylene diisocyanate= Isobutanol= Isophorone diisocyanate= Diphenylmethane diisocyanate= Methoxypropylacetate= N-Methyl pyrrolidone = Dipropylenglycoldimethylether= Solvent naphtha = Toluene diisocyanate= Trial products= Xylene

BADMEA

EAHDI

IBIPDIMDIMPANMP

PG DMESNTDI

VP LS... XP...X

LEGEND

* LF = Low functionality

SUSTAINABILITY @ CASM O R E T H A N J U S T P R O D U C T S

B AY E R I S C O MM I T T E D T O T H E

P R I N C I P L E S O F S U S TA I N A B L E

D E V E LO PM E N T.

We want to fulfill this commitment in three

areas: products and innovations, business

practices and corporate social responsibility.

Innovations are the driver of sustainability in

the CAS Business Unit. Our raw materials make

more sustainable and durable solutions possi-

ble in our end user’s products. This especially

applies to green house gas emissions, health

protection and energy consumption.

We focus our developments on advanced prod-

uct technologies that are safe in their applica-

tion and environmentally friendly: waterborne

products, solvent-free products and those with

a high solid content. The emphasis here is on

products with a very low rate of residual

monomers or volatile substances.

Our product range already included products

based on biomaterials and we are now investi-

gating the potential of renewable resources for

new high-performance products while also tak-

ing ethical standards into account.

In production our priority is on occupational

health and safety as well as energy- and

resource-saving processes.

Our main aim is to conduct our business suc-

cessfully and sustainably. For us this means

achieving commercial success on the basis of

sound business models and in a way that is

compatible with the needs of our employees

and society, protects the environment and pre-

serves our natural resources.

GLOBAL PARTNERSHIPSW E A R E W H E R E Y O U A R E

Our global presence also means local presence.

You can rely on us wherever in the world you

are thanks to our global supply chain manage-

ment. With production sites in most of the

world's strategically important regions we aim

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production site. Our quality, fast application

support and expert advice are available to you

wherever you are.

Success is also dependent on the right timing.

Speed, flexibility, fast development in response

to market requests, efficient production and

delivery – we will help you to deliver these cru-

cial factors.

Because your success is ours as well.

3 9POLYISOCYANATESPREPOLYMERS

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POLYISOCYANATES AND PREPOLYMERS: … · SCIENCE FOR A BETTER LIFE BAYER MATERIALSCIENCE 5 Bayer MaterialScience – the name stands for the materials that the company develops and