Amicure® IC-322: Polycarbamide Curing Agent for Low Gloss Floor Coating Solutions

Shafiq FazelAir Products

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Industrial and Commercial Flooring – Diverse uses and applications…

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Total Floor Coating System

• Primer (A)–Often used with broadcast systems, and are highly recommended for any application on concrete (including damp/green). Can be pigmented if no base coat is used.

• Base coat or Mid coat – Self-level slurry (B) (50-60 mil dry); unfilled clear for single/double broadcast (C) (10-20 mil dry) or coating (5-10 mil dry).

• Top coat or Seal coat (D)– Applied as a clear coat on top of base or mid coat (10-20 mil dry).

A

DB C

A

D

Self- leveling System Single / DoubleBroadcast System

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Attributes of a Total Floor Coating System

•Great Handling Properties– Long working time– Rapid property development

•“Green”– Environmentally friendly – Zero to low VOC– Low odor

•Excellent Performance Properties– Good adhesion to concrete (dry

and damp)– Good recoatability– Fast return to service– UV stability– Chemical / stain resistance– Impact resistance– Abrasion resistance

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Advanced Thermoset Technologies for flooring • Moieties of polymer crosslinked systems

R

OH

NH

RNH

O

O

R R

Polyurethane Amine-cured Epoxy

Polyol

Isocyanate

Amine curing agent

Epoxy resin

NH

NH

O

R R

(Aliphatic) Polyurea

Isocyanate

Polycarbamide

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Advanced Thermoset Technologies- Polycarbamide Technology•Key attributes

• Very rapid cure speed • Low temperature cure• Excellent UV resistance• Thick films in 1 pass (up to 20 mils)• Good stain & chemical resistance• High abrasion resistance• High impact resistance• High gloss

•Current Limitations•Ability to control gloss levels for topcoat applications

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High Gloss is nice, but…

• Formulators want flexibility in providing topcoats with wide gloss range- Low gloss coatings hide flaws better- Surface wear are not easily seen with satin finish- Customer preference

• Current Thermoset Technologies used for high and low gloss topcoats- Solventborne Polyurethanes- Waterborne Polyurethane

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New Novel Polycarbamide Technology• Unique new amine curing agent designed for use with

aliphatic isocyanate resins in high performance flooring applications

• The new Polycarbamide technology, Amicure® IC-322 retains the excellent UV stability and durability of our current commercial offerings, and plus builds in an exciting new Feature: - Formulating flexibility gives the formulator important new

latitude to: • Customize finish between High Gloss and Satin • Low gloss finish is obtained by adding a specialized commercial

matting agent in the formulation- Brings in some VOC, but still <100 g/L

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Amicure IC-322 Satin and Gloss pigmented topcoatsSatin with matting agent, High Gloss without matting agent

SatinHigh

Gloss SatinHigh

Gloss SatinHigh

Gloss

20o 60o 85o

60° Gloss

High Gloss

> 80

Semi Gloss

45-80

Satin 20-45

Matte <2085°Gloss <15

De

te

ct

or

20°

60°

85°

Satin High Gloss SatinSatin High GlossHigh Gloss

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Satin Coatings Comparison (~2 mil DFT)

Topcoat Properties Amicure IC-322Satin

Commercial 2K Waterborne PU

Commercial 2K Solventborne PU

60°Gloss (25°C / 15°C ) 39 / 45 32 / NA 24 / NARecommended film

thickness (mils) Up to 20 < 5 < 5

Mix Viscosity (cP, 25°C ) 1500 200 200

VOC (g/L) < 100 (Low odor) (EPA method 24)

< 50 (Low odor) 100 (High odor)

Working time (min) 10-15 10-15 20-30TFST phase 2/3 (hr) 1.3 / 7 1.0 / 8 3.5 / 8

Persoz Hardness (1/sec)(1 day) 140 160 67

Direct/Reverse Impact (in.lbs) > 160/160 > 120/100 > 160/160

Taber abrasion (mg loss) 1000cycles CS17 wheel 44 41 48

QUV-A (500hrs)- ∆E <3 <3 <3

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Chemical Resistance (ASTM D1308)(1 week after Application)

24 hr exposure

Amicure IC-322Satin

Commercial 2K Waterborne PU

Commercial 2K Solventborne PU

10% Acetic Acid 3 2 1

20% sulfuric acid 5 5 5

Ethanol 5 5 4

50% NaOH 5 5 5

Unleaded gas 5 5 5

Motor oil 5 5 5

Brake Fluid 5 4 5

Skydrol 5 4 5

Total (out of 40) 38 35 35

Ranking after exposure5-best1-worst

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Early Chemical Resistance (ASTM D1308) (1 day/week after Application)

24 hr exposure

Amicure IC-322Satin

Commercial 2K Waterborne PU

Commercial 2K Solventborne PU

10% Acetic Acid 3 / 3 1 / 2 1 / 1

20% sulfuric acid 5 / 5 0 / 5 2 / 5

Ethanol 5 / 5 5 / 5 1 / 4

50% NaOH 5 / 5 5 / 5 4 / 5

Unleaded gas 5 / 5 5 / 5 5 / 5

Motor oil 5 / 5 5 / 5 4 / 5

Brake Fluid 5 / 5 4 / 4 4 / 5

Skydrol 5 / 5 4 / 4 4 / 5

Total (out of 40) 36 / 38 29 / 35 26 / 35

Ranking after exposure5-best1-worst

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Early Water Resistance (ASTM D1308)

Cure times

IC-322Satin

2K WBPU

2K SB PU

4 hr 5 2 3

8 hr 5 3 3

24 hr 5 4 5

48 hr 5 5 5

Ranking after exposure5-best1-worst

IC-322 2K WB PU 2K SB PU

Water exposed after various cure timesWater exposure time – 24 hrs

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Performance ComparisonAmicure IC-322Satin

Commercial 2K Waterborne PU

Commercial 2K Solventborne PU

Green/odor + + -

UV Resistance + + +

Abrasion Resistance + + +

Surface wear + + +

Coating toughness + + +

Pot life/ gel time - + +

Long open time - - +

Early Chemical/water resistance

+ - -

Low Temp Cure + - -

Thick build (>10 mils) + - -

Cost in use $$ $$ $$

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Advanced Thermoset Technologies Conclusion

• A new amine curing agent, Amicure IC-322 has been developed for use in Polycarbamide coatings.- Formulating flexibility gives the formulator important new latitude

to customize gloss between High Gloss and Satin finish.

• The low gloss Polycarbamide formulation provides improved benefits over traditional low gloss thermoset technologies:- Rapid property development- Early chemical and water resistance- Ability to apply thick films in one pass- Can apply satin finish at lower temperatures

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