Latex Sealants

Copyright Protected, 2009. Genovique Specialties. All Rights Reserved.


Benzoflex® LC-531for

Waterborne Caulk


Why Switch Plasticizers?• Regulatory Pressure

– BBP on Substance of Very High Concern List in EU

– DIHP will be on Annex I in the EU as of June 2009 and will carrythe “T” symbol

• Consumer Perception– BBP has been banned in mouth able toys in the EU

– BBP has been banned for articles intended for children age 12and under in the USA

• Benzoflex LC-531, Cost Effective Alternative– No pictograms or safety/risk phrases

– Readily Biodegradable

– Excellent Tg Suppression


Current Classification

MSDSs Labels

Benzoflex®

9-88“N” SymbolR 51/53S 60, S 61

Benzoflex®

2088R 52/53S 61

None

Benzoflex®

LA 705R 52/53S 61

None

Benzoflex®

LC 531None None

Current Classification

MSDSs Labels

BBP* In Annex I

“T” Symbol“N” SymbolR 61, R 62,R 50/53,S 53, S 45,S 60, S 61

DIHP* In Annex Ias of June1st, 2009

“T” SymbolR 61, S 53,S 45

DIBP* In Annex Ias of June 1,2009

“T” SymbolR 61, R 62S 53, S 45

DBP* In Annex I

“T” Symbol“N” SymbolR 61, R 62,R 50, S 61,S 53, S 45

EU Labeling


Latex Caulk Evaluation


Types of Caulk formulations• Non- specification caulk – Painters caulk

• Specification– ASTM C-834

• Type OP : X < 30 % volume shrinkage

• Type C : X < 50 % volume shrinkage

• Grade -18C : Low Temp Flex at -18C

• Grade 0C : Low Temp Flex at 0C

• Grade NF : No Low Temp Flex at 0C

– ASTM C-920• Class 12.5: +/- 12.5 % joint movement capability

• Class 25: +/- 25 % joint movement capability

– TT 230 type


Caulk Specifications Summary

±25%±12.5%NoNoJoint movement

1/2 " @ -26°C1/2 " @ -26°C1" @ -18°C

or 0°CNoLow Temp Flexibility

5pli, and < 25%adhesion loss

5pli, and < 25%adhesion lossNoNoAdhesion

NoNo< 30 %NoVolume shrinkage

ASTM C-920,class 25

ASTM C-920,class 12.5ASTM C-834NoSpecification

BestBetterGoodNon - SpecPerformancerequirements


Non – Specification caulk

• No direct reference to use complying to anyspecification, ASTM or other

• Typically used as gap fillers, but may be used inother applications

• Can be formulated for interior applications suchas kitchen and bath or painter caulk applications,and can be used externally


ASTM C-834

• This specification is for one component latexsealants used for sealing joints in buildingconstruction

– These types of caulks are considered medium quality

– In this specification there are different types of caulkscovered as well as grades

• Used to seal around the exteriors of windows ordoors and to fill cracks


ASTM C - 920

• The ASTM C – 920 specification was designed tocover many performance of caulks and sealantsused to seal, caulk, or glaze in buildings, plazas,decks– Types, Grades, Classes and Use designations are used to

designate performance of a particular end use

• Latex caulk formulations (like the one tested here),class 12.5 are premium quality

• Used for demanding exterior applications includingthose that see significant movement in response tochanges in temperature and/or moisture.


Formulation (% / wt)

1.01.1Pigment

8282By Weight

% Total Solids

100100Total

7.75.4Other

10.37.4Plasticizer

37.456.3Filler

43.6(Vinyl Acrylic: Rhoplex A-920)

29.8(Acrylic: UCAR 162)Emulsion Type

C-920 Class 12.5C-834


Caulk Evaluation Parameters

• Specification Testing– ASTM C 834

– ASTM C 920

• Plasticizer/polymer compatibility

• Package stability

• Handling characteristics

• Cured caulk characteristics

• Exterior Exposure


Evaluation

• The evaluation was focused on developingASTM C-920 and C-834 performance data.

• Plasticizers Evaluated:– Santicizer 160, Butyl benzyl phthalate (BBP)

– Jayflex 77, Diisoheptyl phthalate (DIHP)

– Benzoflex 2088

– Benzoflex LC-531


ASTM C-920 DataTests Benzoflex

LC-531Benzoflex

2088BBP DIHP

C-639, Vertical Slump

C-639, Horz. Slump

C-1183, Extrusion

C-510, RT, Staining

C-510, UV, Staining

C-661, Hardness

C-679, Tack free time

C-719, Cyclic movement

C-794,peel, mortar

C-793, Weathering

C-1246, Heat aging, weight lost

passes specification


ASTM C920 DataCaulk Test Methods Requirement 2088 LC 531 DIHP BBPC-639 Rheological PropertiesVertical, mm 4.8 mm max 3 3 1.3 9.9Horizontal None 0 0 0 0C-1183 - Extrusion rate 10 ml/60 seconds min 671 333 590 710C-510 StainingMortar staining None None None None NoneCaulk Color change None None None None NoneMortar staining None None None None NoneCaulk Color change None None None None NoneC - 661 - Hardness Between 15 and 50 25 30 18 24C- 679 - Tack free , min 72 hours 30 35 25 25C-719 – Cyclic MoveAluminum Substrate Pass Pass Pass PassAdhesion lost 9 cm2 max lost None None None NoneC794 – Adhesion in peelLbs, Mortar 5 lbs min 11.7 11.1 14.8 16.8Failure mode, % Adhesive 25% adhesive max. < 5 Adh C < 5 Adh CLbs, Glass 5 lbs min 2.3 4.7 4 6Failure mode, % major 25% adhesive max. 90 adh 80 adh 100 adh 80 adhLbs, Wood 2 1.9 1.2 2.3Failure mode, % major 100 adh 100 adh 100 adh 100 adhLbs, Aluminum 5 lbs min 4.7 5.7 5.9 7.4Failure mode, % major 25% adhesive max. 90 adh 85 adh 95 adh 50 adh


ASTM C920 Data (Cont.)Caulk Test Methods Requirement 2088 LA 531 DIHP BBPC-793, QUVYellowing (versus unexposedcontrol)

Slight None None Sl -Some

Cracking, 0 best and 10 worst 2 0 0 1Blisters, 0 best and 10 worst 1 0 1 1Low TemperatureCracking 2 max. rating 0 2 2 0Mode of failure, % major C CC-1246 – Weight lost on heatagingAmbient 0.9 1.2 1.6 1.8Aged 7 % max 3.8 5.7 5.7 5.9Cracking ( 0 = Best, 10 = Worst ) 0 0 0 0Chalking ( 0 = Best, 10 = Worst ) 0 0 0 0Yellowing (versus unexposed control) ( 0 = Best,10 = Worst )

0 1 1 0

Other propertiesTensile at break, psi 57 54 72 108100% modulus, psi 42 34 44 78Elongation, % 730 910 880 790


Compatibility Data,Rhoplex A-920 / Plasticizer

Caulk Test Methods 2088 LC 531 DIHP BBP50% Plasticizer on EmulsionsolidsClarity Clear Clear Haze ClearTack Slight Slight Slight Slight

7 daysClarity Clear Clear Hazy ClearTack Slight Slight Slight SlightInitial, 50 CClarity Clear Clear Hazy ClearTack Slight Slight Some Slight7 daysClarity Clear Clear Clear ClearTack Slight Slight Slight SlightViscosity Response(Brookfield RVT, 20 RPM’s50% Plasticizer on EmulsionsolidsInitial viscosity, mPa.a (60min.)

21000 11375 3175 20000

24 hr viscosity at RT, mPa.s 23250 18500 8200 217507 Days at 50 C, mPa 28375 27000 7050 26750


*ASTM C - 834 DataTests Benzoflex

LC-531Benzoflex

2088BBP DIHP

C-731, Extrusion

C-732, Weathering (QUV)

C-1241, OP, Volume Shrink

C-734, 0C, Low Temp Flex

C-734, -18C, Low Temp Flex

C-736, Elongation recovery

C-2202, Slump

C-2203, Staining

C-2377, Tack free time

passes specification

*The sample prepared with the LC-531 is the only sample to pass the ASTM C-834,Grade -18°C specification


ASTM C834 DataCaulk Test Method Requirement 2088 LA531 DIHP BBPC-731 - Extrusion, package stab. 2g/sec minimum 40 37.6 41.3 38.1

C-732 – Artificial Weathering

Wash-out None None None None None

Slump None None None None None

Cracking None None None None None

Adhesion loss 25% max None None None None

Discoloration, Yellowness None None None None

C-1241

Type OP 30% max 26.9 26.4 26.7 25.7

C-734 – Low Temperature Flex

Room temperature

Cracking None 0 0 0 0

Adhesion loss None None None None None

Exposed samples

Room temperature None 0 0 0 0

Adhesion loss None None None None None

Grade - -18 (0 = Best, 10 = Worst)

Room temperature

Cracking None 10 0 6 10

Adhesion loss None 100% A None 100% C 100%C

Exposed samples

Room temperature None 10 10 4 10

Adhesion loss None 100% A 100% C 100% C 30% A

C-736 – Elongation recovery

Recovery 75% min. 70 99 90 71

Adhesion loss

Glass 25% max. 14 14 18 1

Aluminum 25% max. 0 0 0 0


ASTM C834 Data (Cont.)Caulk Test Method Requirement 2088 LA531 DIHP BBP

C- 2202 - Slump 4 mm max. 1 1.3 1.5 1

C- 2203 - Stain Index, Alt proc.masonry

3 max 0 0 0 0

D-2377 Tack free time As acceptable 90 70 90 95

Other Tests, Tensile, ASTM D-638

Tensile at break, psi 20 21 19 14

50% modulus, psi 21 21 21 13

Elongation, % 110 63 88 40

Package stability, gunability

Initial, g/sec 39.3 33.9 38.4 38.2

After 5 Freeze/Thaw cycles 30.1 35.9 40 37.9

After 4 weeks at 50 C 37.3 39.8 41.6 25.7

C-661 Hardness 40 35 38 40

C-1246 Weight Lost after aging

Ambient 0.2 0.3 0.3 0.2

Heat aged, 21 days at 70 C 2.0 3.0 1.3 2.0


Compatibility Data,Ucar 162 / Plasticizer

Caulk Test Method 2088 LC 531 DIHP BBPViscosity Response50% Plasticizer onEmulsion solidsInitial viscosity, mPa.a (60min.)

5600 3550 650 5900

24 hr viscosity at RT,mPa.s

5800 3550 3725 6150

7 Days at 50 C, mPa 4275 4200 9600 8500Initial, RT filmCompatibilityClarity Clear Clear Haze ClearTack Some Some Some Some7 daysClarity Clear Clear Hazy ClearTack Some Some Some SomeInitial, 50 CClarity Clear Clear Hazy ClearTack Some Some Some Some7 daysClarity Clear Clear Clear ClearTack Some Some Some some


Plasticizer Tg Suppression

-50

-40

-30

-20

-10

0

10

A920 - 25% A920 - 50% 162 - 25% 162 - 50%

None

2088

LC531

DIHP

BBP

Start at - 100ºC, increase 10ºC/min. % on polymer solids


Caulk Florida Fence Data,Mildew Ratings – C920

Based Caulk

0

1

2

3

4

5

6

7

8

9

10

0 10 20 30

Months Exposure

Vis

ual

Rati

ng DIHP

2088

BBP

LC-531

This is an unprotected system. This is vertical north exposure.


Conclusions

• Benzoflex LC-531 is an exceptional alternative tophthalates in caulk applications

• Data presented demonstrates that in the caulkformulations tested– Meets ASTM Specifications for:

• C-920, Grade NS, Class 12.5, Use M

• C-834, Type OP, Grade 0C and – 18C for Benzoflex LC 531 caulkin a Grade 0C formulation

– Excellent exterior exposure performance


Benzoflex® is a registered trademark of Genovique Specialties. All rights reserved.The information in this presentation is, to the best of our knowledge, true and accurate.The representations about the products and data contained herein are based upon testresults achieved under laboratory practices supervised and controlled by GenoviqueSpecialties. Since formulations, preparation or conditions of use may vary, GenoviqueSpecialties is unable to guarantee the same performance as indicated.

Nothing contained herein shall constitute a guarantee or warranty with respect to theproduct or its uses, nor does Genovique Specialties assume any liability. Therefore, theuser is responsible for determination of suitability of any material or practice for a specificpurpose and for adoption of such safety precautions as may be necessary.

Genovique Specialties does not warrant against infringement of any patent which mightarise by the use of this presentation and/or Genovique Specialties’ product in anycombination with other products or arising in the operation of any process.

Documents

Latex Sealants