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Novel Waterborne Epoxy Curing Agent Technology

Novel Waterborne Epoxy Curing Agent Technology. David Dubowik Air Products & Chemicals Presented at the TRFA Annual Meeting November 15, 2005 Fort Lauderdale, Florida. Outline: Novel Waterborne Epoxy Curing Agent. Waterborne Epoxy Overview Market Drivers Novel Curing Agent Technology

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Novel Waterborne Epoxy Curing Agent Technology

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  1. Novel Waterborne Epoxy Curing Agent Technology David Dubowik Air Products & Chemicals Presented at the TRFA Annual Meeting November 15, 2005 Fort Lauderdale, Florida

  2. Outline: Novel Waterborne Epoxy Curing Agent • Waterborne Epoxy Overview • Market Drivers • Novel Curing Agent Technology • Performance Attributes • Summary

  3. Typical WB Epoxy Applications • Institutional & Maintenance Coatings • Low Odor • Easy Handling • Abrasion Resistance • Alkali & Acid Stain Resistance

  4. Waterborne Epoxy...The Basics H2O Evaporates Epoxy & Amine Dispersed in Water Epoxy & Amine Polymerize Coating Applied

  5. High Water Shear Amine Epoxy - Water - Soluble + Liquid Emulsion Amine Epoxy Type I Waterborne Epoxies • Amine acts as Epoxy Emulsifier • Water + Amine + Epoxy form Complex Emulsion • Emulsion Destabilizes Visible Pot Life • Liquid Epoxy Short Pot Life, Slow Dry

  6. Type II Waterborne Epoxies • Epoxy Pre-dispersed with Nonionic Surfactant • Amine Migrates from Water into Epoxy • Polymerization Inside Particle Blind Pot Life • Solid Epoxy Long Pot Life, Fast Dry • Co-Solvents Needed for Coalescence

  7. Type I & II Curing Agent Limitations Curing Agents Trap Water, Limit Film Build

  8. Market Drivers for New Technology • Easier Handling • Lower Viscosity • Higher Water Dilution • No Induction Time • Lower Color • Lower Initial Color • Higher Yellowing resistance • Higher Film Build • Mastics • Block Fillers

  9. Novel Waterborne Epoxy Technology Anquawhite 100 • Amine Functional Dispersion in Water • Water Insoluble • Highly Compatible with Epoxy

  10. Anquawhite 100 Properties Viscosity 200 cP Solids 55% Solvents Water 41% PM 4% Color, Gardner 1 AHEW 350 Freeze-Thaw Cycles > 5 • Low Amine Content Improves • Yellowing • Stain Resistance

  11. Anquawhite 100 + Epoxy Dispersion Film Formation Minimal Epoxy-Amine Interaction Low Viscosity High Solids

  12. Anquawhite 100 + Epoxy Dispersion Long Pot Life & High Gloss

  13. Anquawhite 100 - Liquid EpoxyFilm Formation Amine Emulsifies Liquid Epoxy

  14. Pot Life with Liquid Epoxy 10000 10000 65% solids 65% solids 8000 8000 60% solids 60% solids (mPa.s) 55% solids 55% solids C 6000 6000 ° ° 4000 4000 Viscosity 25 Viscosity 25 2000 2000 0 0 0 0 100 100 200 200 300 300 400 400 500 500 Time [min] Time [min]

  15. Low Amine Content Delivers High Resistance to Yellowing Cycloaliphatic Amine 40 Typical Waterborne Yellowness Index 20 Anquawhite 100 Solid Epoxy Dispersion Anquawhite 100 Liquid Epoxy 0 0 20 40 60 80 Hours QUVA

  16. Hydrophobic Amine: Less Trapped Water, Higher Film Build Typical WB Epoxy 20 mil DFT Anquawhite 100 20 mil DFT

  17. Low Amine Content Results in High Stain Resistance Anquawhite 100 Conventional Waterborne Discoloration Blistering Discoloration Blistering Coffee no change no slight stain no Ketchup no change no slight stain no Mustard no change no yellow stain slight Red Wine very slight stain no red stain slight

  18. Anquawhite 100 Food Stain Resistance Red Wine Red Wine Mustard Ketchup Typical WB Epoxy Coating Anquawhite 100 Coating Ketchup Mustard

  19. Electrochemical Impedance Spectroscopy 9.00 Anquawhite 100 75 day immersion 8.50 8.00 Log Modulus (Ohm) 7.50 Conventional Waterborne 25 day immersion Coating Failure 7.00 6.50 6.00 5.50 5.00 4.50 -1.00 0.00 1.00 2.00 3.00 4.00 5.00 Log Freq (Hz) Anquawhite 100 Hydrophobicity Results in High Barrier Properties Anquawhite 100 Forms an Excellent Barrier Against Water & Salts

  20. DI H O 2 2 Starting Point Formulation: Fast Dry Enamel Pounds Pounds Gallons Gallons A Side A Side Ancarez AR 550 413.6 413.6 45.1 45.1 41.4 41.4 5.0 5.0 RM 8W (25% in H O ) 2 455.0 455.0 50.00 50.00 B Side B Side Anquawhite Anquawhite 100 100 144.8 144.8 16.5 16.5 188.2 188.2 22.6 22.6 Disperbyk Disperbyk 190 190 10.3 10.3 1.2 1.2 DF 110D DF 110D 4.1 4.1 0.50 0.50 R 960 R 960 289.5 289.5 8.9 8.9 Surfynol Surfynol 420 420 3.1 3.1 0.4 0.4 640.1 640.1 50.00 50.00 Wt Solids 65% 65% PVC 19 % VOC (lb/gal) 0.11 Vol Solids 47% 47% Dry to Touch 15 min. Pot Life 8 hr.

  21. Starting Point Formulation: High Build Enamel Pounds Gallons A Side Epon 828 155.69 16.08 Epodil 748 29.22 3.93 20.0 B Side Anquawhite 100 325.11 37.10 DI H2O 68.35 8.19 Disperbyk 190 15.19 1.72 DF 110D 3.80 0.45 Rheology Modifier 15.19 1.82 5% Acetic 121.52 14.56 Dowanol PPh 52.40 5.91 TiPure R 960 311.39 9.57 Surfynol 440 5.70 0.68 918.65 80.0 Dry to Touch 4 hr Pot Life 2 hr PVC 19.4% VOC (lb/gal) 1.26 Wt Solids 64% Vol Solids 53%

  22. Summary • Novel Amine Dispersion Technology • Low Viscosity • High Build • Low Yellowing • High Stain Resistance • High Water Resistance • Formulating Versatility

  23. Questions ?

  24. Thank You !!! Please visit us at www.airproducts.com/EpoxyAdditives

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