Development&of&WaterBSoluble& - PowerPoint PPT Presentation

Development&of&WaterBSoluble& Catalysts&for&Polyurethane&& CoaDng&ApplicaDons&& Brandon&Parks,&Reaxis&Inc.& May&8 th ,&2014& NESCT&Symposium,&Marlborough,&MA,&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/H 2 O!selec'vity!using!C333W50!! ! – !Curing!proper'es!in!a!solventborne!formula'on! – !Evalua'on!of!catalyst!shelf1life!in!a!MDI!formula'on! NESCT&Symposium,&Marlborough,&MA,&2014&

Why&Develop&WaterBSoluble&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! NESCT&Symposium,&Marlborough,&MA,&2014&

2K&WB&PU&CoaDng&Deficiencies& ! !Elongated!drying!speed!under!humid! condi'ons! ! ! !Diminished!film!performance!proper'es! ! ! !Inferior!appearance!vs.!standard! solventborne!systems! ! NESCT&Symposium,&Marlborough,&MA,&2014&

Dry&Times&in&2K&WB&& PU&CoaDng&FormulaDon& 300" 270" 240" 210" 180" SetAtoATouch" Time"(min)" TackAFree" 150" DryAHard" DryAThrough" 120" PotAlife" 90" 60" 30" 0" C739W50" C739E50" C333W50" C333E50" C622W78" C218"(DBTL)"No"Catalyst" NESCT&Symposium,&Marlborough,&MA,&2014&

Color,&Gloss,&and&Physical&& Property&Development& Color Gloss Catalyst 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 Cross-Cut MEK Pencil Catalyst Tape Double Hardness Adhesion Rubs 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 NESCT&Symposium,&Marlborough,&MA,&2014&

Effect&of&Catalyst&Loading&on&Dry&Times& in&a&2K&WB&PU&FormulaDon& 180" 150" 120" Dry"Time"(min)" Set?to?Touch" 90" Tack"Free" Dry"Hard" Dry"Through" 60" 30" 0" 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" NESCT&Symposium,&Marlborough,&MA,&2014&

Effect&of&RelaDve&Humidity&Using& C333W50&in&a&2K&WB&PU&FormulaDon& 250" 200" 150" Time"(min)" SetBtoBTouch" Dust"Free" 100" Dry"Hard" 50" 0" 50" 75" 90" 50" 75" 90" C333W50" C218"(DBTL)" Rela9ve"Humidity"(%)" NESCT&Symposium,&Marlborough,&MA,&2014&

NCO/OH&vs&NCO/H 2 O& &SelecDvity&Using&C333W50& 4.1 C333W50 - Water 3.9 C333W50 - Butanol 3.7 -Ln(Abs) (2270 cm -1 ) K rel = 6.7 3.5 3.3 3.1 2.9 2.7 2.5 0 50 100 150 200 250 300 Time (min) NESCT&Symposium,&Marlborough,&MA,&2014&

Solventborne&Curing&ProperDes& 720$ >% 720.0$ 660$ 600$ 540$ 526.25$ 480$ Dry$Times$(min)$ 420$ SetBtoBTouch$ 406.88$ 360$ TackBFree$ DryBHard$ 300$ DryBThrough$ 240$ 180$ 120$ 36.5$ 60$ 75.94$ 17.0$ 17.0% 17.7% 11.1$ 57.9% 9.6$ 9.6$ 8.1$ 7.8$ 6.2$ 4.8$ 0$ C739E50$ C333E50$ C218$(DBTL)$ No$Catalyst$ NESCT&Symposium,&Marlborough,&MA,&2014&

Catalyst&ShelfBLife&in&a&MDI&FormulaDon& 8.00# 7.00# 6.00# 5.00# Gel#Time#(min)# 4.00# 3.00# 2.00# 1.00# 0.00# 0# 1# 2# 0# 1# 2# 0# 1# 2# 0# 1# 2# C218#(DBTL)# C333#E50# C716# C739#E50# Time#(weeks)# Catalyst# NESCT&Symposium,&Marlborough,&MA,&2014&

Catalyst&ShelfBLife&in&a&MDI&FormulaDon& 390.0% 340.0% 290.0% 240.0% Change%in%Gel%Time%(%)% 190.0% 140.0% 90.0% 40.0% !10.0% 1% 2% 1% 2% 1% 2% 1% 2% C218%(DBTL)% C333%E50% C716% C739%E50% Time%(weeks)% Catlalyst% NESCT&Symposium,&Marlborough,&MA,&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! ! !C739E50!exhibits!superior!shelf1life!stability!compared!to! DBTL!and!other!Bi!carboxylates! NESCT&Symposium,&Marlborough,&MA,&2014&

Future&Studies& ! !Expansion!of!catalyst!stability!and!shelf1life! study! – !Balancing!reac'vity!with!shelf1life! ! !Heat1ac'va'on!of!catalysts!(“ac'vated!cure”)! ! !Expansion!NCO/OH!vs.!NCO/H 2 O!!catalyst! selec'vity ! NESCT&Symposium,&Marlborough,&MA,&2014&

Thanks&For&Your&A]enDon!& ! !Want!more!informa'on?!Check!us!out!online! at!www.reaxis.com!! ! !Ques'ons?! NESCT&Symposium,&Marlborough,&MA,&2014&

Waterborne&FormulaDon&A& Material Weight (g) Urethane Modified 25.0 Polyester Polyol Weight % Solids NCO:OH Water Letdown 6.7 45.00 2.00 Water- Dispersable, Aliphatic 10.00 Polyisocyanate (HDI) Catalyst 0.0375 NESCT&Symposium,&Marlborough,&MA,&2014&

Waterborne&FormulaDon&B&–& Polyester&Polyol&Dispersion& Material Weight (g) Weight Solids (g) Polyester Polyol 205.5 82.2 Dispersion Rutile TiO 2 Pigment 65.31 65.31 Defoamer 3.8 3.59 Weight % Solids NCO:OH Rheological Modifier 0.86 2.15 42.72 1.10 Dispersant 2.3 1.04 Flow Modifier 3.4 0.10 Water 71.22 0 3:1 Water-Dispersable, Aliphatic 8.97 - Polyisocyanate (HDI) in EEP Catalyst 0.018-0.020 0.018-0.020 Total 361.36 154.39 NESCT&Symposium,&Marlborough,&MA,&2014&

Waterborne&FormulaDon&C&–& WaterBReducible&Polyester&Polyol& Material Weight (g) Weight Solids (g) Water-Reducible 295.6 266.02 Polyester Polyol Wetting Agent 4.4 3.16 Weight % Solids NCO:OH 10% Aqueous 23.4 0 Ammonia Solution 43.16 1.4-1.15 Water Letdown 641.3 0 Water-Dispersable, Aliphatic 462.0 346.53 Polyisocyanate (HDI) Catalyst 0.08 or 0.16 0.08 or 0.16 Total 1426.7 615.71 NESCT&Symposium,&Marlborough,&MA,&2014&

Waterborne&FormulaDon&D&–& Urethane&Modified&Polyester&Polyol& Material Weight (g) Weight Solids (g) Urethane Modified 131.32 45.96 Polyester Polyol Wetting Agent 1.93 1.55 Water Letdown 23.47 0 Weight % Solids NCO:OH 45.31 2.00 Water-Dispersable, Aliphatic 42.95 42.95 Polyisocyanate (HDI) Catalyst 0.17 0.08 Total 199.84 90.54 NESCT&Symposium,&Marlborough,&MA,&2014&