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

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 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

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 50 100 150 200 250 300

• Ln(Abs) (2270 cm-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)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) 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 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 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

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 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