2014 American Coating Conference Reaxis Presentation

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Development of New Water Soluble Catalysts for Polyurethane Coating Applications

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2014 American Coating Conference Reaxis Presentation

  1. 1. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Development)of)Water<Soluble) Catalysts)for)Polyurethane)) Coa,ng)Applica,ons)) Brandon)Parks,)Reaxis)Inc.) April)8th,)2014)
  2. 2. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Overview) ! !Evalua'on!of!several!novel,!water1soluble,! hydroly'cally!stable,!Sn1,!Bi1,!and!Zn1based!catalysts! –  !Curing!proper'es!in!several!2K!WB!PU!formula'ons! ! –  !Effect!of!rela've!humidity!on!curing!'mes!using!C333W50! ! –  !NCO/OH!vs!NCO/H2O!selec'vity!using!C333W50!! ! –  !Curing!proper'es!in!a!solventborne!formula'on!
  3. 3. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Why)Develop)Water<Soluble)Catalysts?) ! !Increasing!market!for!2K!WB!PU!coa'ngs! ! !Reduced!VOC!content!of!materials! ! !!Decreased!associated!hazards! – !Flammability! – !Insurance!costs! ! !Water!provides!a!non1toxic,!lower!cost,! abundant!solvent!system!
  4. 4. American)Coa,ngs)Conference,)Atlanta)GA,)2014) 2K)WB)PU)Coa,ng)Deficiencies) ! !Elongated!drying!speed!under!humid! condi'ons! ! ! !Diminished!film!performance!proper'es! ! ! !Inferior!appearance!vs.!standard! solventborne!systems! !
  5. 5. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Kine,c)Curing)Profile)in)) a)2K)WB)PU)Formula,on) 0" 0.5" 1" 1.5" 2" 2.5" 3" 0" 1" 2" 3" 4" 5" 6" 7" Peak"Ra0o"(2270"/"2935"cm71)" Time"(days)" No Catalyst C333W50 C218 (DBTL) C739W50 C622W78
  6. 6. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Dry)Times)in)2K)WB)) PU)Coa,ng)Formula,on) 0" 30" 60" 90" 120" 150" 180" 210" 240" 270" 300" C739W50" C739E50" C333W50" C333E50" C622W78" C218"(DBTL)"No"Catalyst" Time"(min)" SetAtoATouch" TackAFree" DryAHard" DryAThrough" PotAlife"
  7. 7. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Color,)Gloss,)and)Physical)) Property)Development) L* a* b* 20° 60° C739W50 90.85 -1.23 1.17 46.1 79.7 C739E50 91.05 -1.10 1.41 59.1 82.4 C333W50 90.54 -1.36 0.84 59.7 84.2 C333E50 90.77 -1.23 1.19 60.3 84.4 C622W78 90.94 -1.17 1.30 41.3 78.2 C218 (DBTL) 91.22 -1.12 1.35 64.1 80.3 No Catalyst 90.68 -1.16 1.35 50.9 81.6 GlossColor Catalyst C739W50 F 5B 68 C739E50 3H 4B 68 C333W50 B 3B 54 C333E50 HB 3B 52 C622W78 HB 4B 52 C218 (DBTL) HB 5B 48 No Catalyst HB 5B 38 Catalyst Pencil Hardness Cross-Cut Tape Adhesion MEK Double Rubs
  8. 8. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Effect)of)Catalyst)Loading)on)Dry)Times) in)a)2K)WB)PU)Formula,on) 0" 30" 60" 90" 120" 150" 180" 0.20%" 0.40%" 0.20%" 0.40%" 0.20%" 0.40%" 0.20%" 0.40%" 0.20%" 0.40%" 0.20%" 0.40%" C218"(DBTL)" C333E50" C333W50" C739E50" C739W50" C622W78" Dry"Time"(min)" Set?to?Touch" Tack"Free" Dry"Hard" Dry"Through"
  9. 9. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Effect)of)Rela,ve)Humidity)Using) C333W50)in)a)2K)WB)PU)Formula,on) 0" 50" 100" 150" 200" 250" 50" 75" 90" 50" 75" 90" C333W50" C218"(DBTL)" Time"(min)" Rela9ve"Humidity"(%)" SetBtoBTouch" Dust"Free" Dry"Hard"
  10. 10. American)Coa,ngs)Conference,)Atlanta)GA,)2014) NCO/OH)vs)NCO/H2O) )Selec,vity)Using)C333W50) 2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 0 50 100 150 200 250 300 -Ln(Abs)(2270cm-1) Time (min) C333W50 - Water C333W50 - Butanol Krel = 6.7
  11. 11. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Solventborne)Curing)Proper,es) 6.2$ 4.8$ 7.8$ 75.94$ 17.0$ 8.1$ 9.6$ 406.88$ 36.5$ 9.6$ 11.1$ 526.25$ 57.9% 17.0% 17.7% 0$ 60$ 120$ 180$ 240$ 300$ 360$ 420$ 480$ 540$ 600$ 660$ 720$ C739E50$ C333E50$ C218$(DBTL)$ No$Catalyst$ Dry$Times$(min)$ SetBtoBTouch$ TackBFree$ DryBHard$ DryBThrough$ >%720.0$
  12. 12. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Conclusions) ! !Several!water1soluble,!hydroly'cally!stable,!Sn1,! Bi1,!and!Zn1based!catalysts!have!been!developed! ! !Catalysts!demonstrate!excep'onal!rates!of! drying!and!good!color,!gloss,!and!physical! property!development!in!both!waterborne!and! solventborne!systems! ! !C333W50!shows!excellent!curing!'mes!under! high!humidity!condi'ons!and!high!levels!of!NCO/ OH!selec'vity!
  13. 13. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Future)Studies) ! !Catalyst!stability!and!shelf1life!in!“Part1A”! – !Balancing!reac'vity!with!shelf1life! ! !Heat1ac'va'on!of!catalysts!(“ac'vated!cure”)! ! !Expansion!NCO/OH!vs.!NCO/H2O!!catalyst! selec'vity!
  14. 14. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Thanks)For)Your)Aen,on!) ! !!Visit!us!at!exhibit!booth!#1756!! ! ! !Want!more!informa'on?!Check!us!out!online! at!www.reaxis.com!! ! !Ques'ons?!
  15. 15. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Waterborne)Formula,on)A) Material Weight (g) Water Letdown 6.7 Catalyst 0.0375 Water- Dispersable, Aliphatic Polyisocyanate (HDI) 10.00 Urethane Modified Polyester Polyol 25.0 Weight % Solids NCO:OH 45.00 2.00
  16. 16. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Waterborne)Formula,on)B)–) Polyester)Polyol)Dispersion) Material Weight (g) Weight Solids (g) Rutile TiO2 Pigment 65.31 65.31 Rheological Modifier 0.86 2.15 Dispersant 2.3 1.04 Flow Modifier 3.4 0.10 Water 71.22 0 Catalyst 0.018-0.020 0.018-0.020 Total 361.36 154.39 82.2 Defoamer 3.8 3.59 Polyester Polyol Dispersion 205.5 3:1 Water-Dispersable, Aliphatic Polyisocyanate (HDI) in EEP 8.97 - Weight % Solids NCO:OH 42.72 1.10
  17. 17. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Waterborne)Formula,on)C)–) Water<Reducible)Polyester)Polyol) Material Weight (g) Weight Solids (g) Wetting Agent 4.4 3.16 Water Letdown 641.3 0 Catalyst 0.08 or 0.16 0.08 or 0.16 Total 1426.7 615.71 10% Aqueous Ammonia Solution 23.4 0 Water-Dispersable, Aliphatic Polyisocyanate (HDI) 462.0 346.53 Water-Reducible Polyester Polyol 295.6 266.02 Weight % Solids NCO:OH 43.16 1.4-1.15
  18. 18. American)Coa,ngs)Conference,)Atlanta)GA,)2014) Waterborne)Formula,on)D)–) Urethane)Modified)Polyester)Polyol) Material Weight (g) Weight Solids (g) Wetting Agent 1.93 1.55 Water Letdown 23.47 0 Catalyst 0.17 0.08 Total 199.84 90.54 Water-Dispersable, Aliphatic Polyisocyanate (HDI) 42.95 Urethane Modified Polyester Polyol 131.32 45.96 42.95 Weight % Solids NCO:OH 45.31 2.00

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