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2014 American Coating Conference Reaxis Presentation

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Development of New Water Soluble Catalysts for Polyurethane Coating Applications

Development of New Water Soluble Catalysts for Polyurethane Coating Applications

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    2014 American Coating Conference Reaxis Presentation 2014 American Coating Conference Reaxis Presentation Presentation Transcript

    • 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)
    • 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!
    • 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!
    • 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! !
    • 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
    • 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"
    • 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
    • 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"
    • 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"
    • 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
    • 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$
    • 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!
    • 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!
    • 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?!
    • 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
    • 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
    • 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
    • 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