SLIDE 1
NESCT&Symposium,&Marlborough,&MA,&2014&
NESCT&Symposium,&Marlborough,&MA,&2014&
Development&of&WaterBSoluble& - - PowerPoint PPT Presentation
Development&of&WaterBSoluble& - - PowerPoint PPT Presentation
Development&of&WaterBSoluble& Catalysts&for&Polyurethane&& CoaDng&ApplicaDons&& Brandon&Parks,&Reaxis&Inc.& May&8 th ,&2014&
SLIDE 2
SLIDE 3
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!
SLIDE 4
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! !
SLIDE 5
NESCT&Symposium,&Marlborough,&MA,&2014&
Dry&Times&in&2K&WB&& PU&CoaDng&FormulaDon&
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"
SLIDE 6
NESCT&Symposium,&Marlborough,&MA,&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 Gloss Color 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
SLIDE 7
NESCT&Symposium,&Marlborough,&MA,&2014&
Effect&of&Catalyst&Loading&on&Dry&Times& in&a&2K&WB&PU&FormulaDon&
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"
SLIDE 8
NESCT&Symposium,&Marlborough,&MA,&2014&
Effect&of&RelaDve&Humidity&Using& C333W50&in&a&2K&WB&PU&FormulaDon&
0" 50" 100" 150" 200" 250" 50" 75" 90" 50" 75" 90" C333W50" C218"(DBTL)" Time"(min)" Rela9ve"Humidity"(%)"
SetBtoBTouch" Dust"Free" Dry"Hard"
SLIDE 9
NESCT&Symposium,&Marlborough,&MA,&2014&
NCO/OH&vs&NCO/H2O& &SelecDvity&Using&C333W50&
2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 50 100 150 200 250 300
- Ln(Abs) (2270 cm-1)
Time (min) C333W50 - Water C333W50 - Butanol
Krel = 6.7
SLIDE 10
NESCT&Symposium,&Marlborough,&MA,&2014&
Solventborne&Curing&ProperDes&
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$
SLIDE 11
NESCT&Symposium,&Marlborough,&MA,&2014&
Catalyst&ShelfBLife&in&a&MDI&FormulaDon&
0.00# 1.00# 2.00# 3.00# 4.00# 5.00# 6.00# 7.00# 8.00# 0# 1# 2# 0# 1# 2# 0# 1# 2# 0# 1# 2# C218#(DBTL)# C333#E50# C716# C739#E50# Gel#Time#(min)# Time#(weeks)# Catalyst#
SLIDE 12
NESCT&Symposium,&Marlborough,&MA,&2014&
Catalyst&ShelfBLife&in&a&MDI&FormulaDon&
!10.0% 40.0% 90.0% 140.0% 190.0% 240.0% 290.0% 340.0% 390.0% 1% 2% 1% 2% 1% 2% 1% 2% C218%(DBTL)% C333%E50% C716% C739%E50% Change%in%Gel%Time%(%)% Time%(weeks)% Catlalyst%
SLIDE 13
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!
SLIDE 14
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/H2O!!catalyst! selec'vity!
SLIDE 15
NESCT&Symposium,&Marlborough,&MA,&2014&
Thanks&For&Your&A]enDon!&
! !Want!more!informa'on?!Check!us!out!online! at!www.reaxis.com!! ! !Ques'ons?!
SLIDE 16
NESCT&Symposium,&Marlborough,&MA,&2014&
Waterborne&FormulaDon&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
SLIDE 17
NESCT&Symposium,&Marlborough,&MA,&2014&
Waterborne&FormulaDon&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 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
SLIDE 18
NESCT&Symposium,&Marlborough,&MA,&2014&
Waterborne&FormulaDon&C&–& WaterBReducible&Polyester&Polyol&
Material Weight (g) Weight Solids (g) Wetting Agent 4.4 3.16 Water Letdown 641.3 Catalyst 0.08 or 0.16 0.08 or 0.16 Total 1426.7 615.71 10% Aqueous Ammonia Solution 23.4 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
SLIDE 19
NESCT&Symposium,&Marlborough,&MA,&2014&
Waterborne&FormulaDon&D&–& Urethane&Modified&Polyester&Polyol&
Material Weight (g) Weight Solids (g) Wetting Agent 1.93 1.55 Water Letdown 23.47 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