Development)of)Water<Soluble) Catalysts)for)Polyurethane)) - PowerPoint PPT Presentation

Development)of)Water<Soluble) Catalysts)for)Polyurethane)) Coa,ng)Applica,ons)) Brandon)Parks,)Reaxis)Inc.) April)8 th ,)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/H 2 O!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) 3" No Catalyst C333W50 C218 (DBTL) 2.5" C739W50 C622W78 Peak"Ra0o"(2270"/"2935"cm 71 )" 2" 1.5" 1" 0.5" 0" 0" 1" 2" 3" 4" 5" 6" 7" Time"(days)" American)Coa,ngs)Conference,)Atlanta)GA,)2014)

Dry)Times)in)2K)WB)) PU)Coa,ng)Formula,on) 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" American)Coa,ngs)Conference,)Atlanta)GA,)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 American)Coa,ngs)Conference,)Atlanta)GA,)2014)

Effect)of)Catalyst)Loading)on)Dry)Times) in)a)2K)WB)PU)Formula,on) 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" American)Coa,ngs)Conference,)Atlanta)GA,)2014)

Effect)of)Rela,ve)Humidity)Using) C333W50)in)a)2K)WB)PU)Formula,on) 250" 200" 150" Time"(min)" SetBtoBTouch" Dust"Free" 100" Dry"Hard" 50" 0" 50" 75" 90" 50" 75" 90" C333W50" C218"(DBTL)" Rela9ve"Humidity"(%)" American)Coa,ngs)Conference,)Atlanta)GA,)2014)

NCO/OH)vs)NCO/H 2 O) )Selec,vity)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) American)Coa,ngs)Conference,)Atlanta)GA,)2014)

Solventborne)Curing)Proper,es) 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$Catalyst$ 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/H 2 O!!catalyst! selec'vity ! American)Coa,ngs)Conference,)Atlanta)GA,)2014)

Thanks)For)Your)A\en,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) 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 American)Coa,ngs)Conference,)Atlanta)GA,)2014)

Waterborne)Formula,on)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 American)Coa,ngs)Conference,)Atlanta)GA,)2014)

Waterborne)Formula,on)C)–) Water<Reducible)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 American)Coa,ngs)Conference,)Atlanta)GA,)2014)

Waterborne)Formula,on)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 American)Coa,ngs)Conference,)Atlanta)GA,)2014)