Desmodur®/Desmophen® Bayhydrol®/Bayhydur® Roskydal®

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14 4. Desmophen ® polyols and reactive diluents OH content [%] on solids 4 3 2 1 Relationship between drying and VOC-value (Hardener: Desmodur ® N 3390) VOC-value [g/l] 580 560 540 520 500 480 460 440 420 Hydroxyacrylates for Medium Solid 2K PUR Systems A 450 faster 2 LS 2383 A 160 A 265 Clear Coats Primer/Surfacer Drying (tackfree) LS 2383 A265 A 870 A 365 A 665 Size of bubbles: durability slower A 365 A 665 A 870 LS 2350 4 6 8 10 12 Drying time [h] till touchability
Reactive diluents for very high solids 1) 2) 3) Very High Solids Systems (< 250 g/l VOC) Very low viscous polyols Very low viscous hardener Very slow drying Polyaspartates: ● sterically hindered ● electron deficient ● secondary aliphatic amines no blocking agent very low odour good compatibility low colour value Desmophen ® VP LS 2142 VP LS 2965 NH 1521 (VP LS 2973) Low viscous polyols Low viscous hardener Reactive diluent Fast drying Type Aldimine Ketimine EtO EtO Polyaspartate Synthesis and Chemical Structure of Polyaspartates 90 in BA ~25 ~80 ~150 Equivalent weight 4) NH 1520 Polyaspartate 100 ~1200 290 O O R I R I N X = H 3 C N 100 100 R Supply form [%] Crosslinking-Reaction of Aldimines and Ketimines via Hydrolysis R X R N R I +2H 2 O -2H 2 O Reaction via Imin-Enamin Tautomerie X R N H 2 N X CH 2 R I NH 2 Viscosity at 23° C [mPas] catalyst CH 3 O O 139 167 356 OEt OEt H 2 N H R I N CH 2 X R Reactivity ++ ++ (+) + + X R OEt NH 2 N O H R I H N +2 O OEt R O R I crosslinking with Polyisocyanate X Applications O clear & top coats in comb. with 3+5 primers & fillers in comb. with polyols clear & top coats in comb. with 1+5; top coats in comb. with polyacrylate polyols N H OEt O TSCA EINECS clear coats & fillers in 5) NH 1420 Polyaspartate 100 ~1500 279 ++ Yes* comb. with 1+3 putties & elastomers 6) NH 1220 Polyaspartate 100 ‹100 230 ++++ Yes* in comb. with 5 BA – butyl acetate Yes Yes Yes* Yes* OEt *: registered “New Stuff” in Europe 15
Page 1 and 2: EMEA - Europe, Middle East, Africa
Page 3 and 4: Overview 1. Introduction Page 4 - H
Page 5 and 6: Chemistry of 2K polyurethane system
Page 7 and 8: 3. Desmodur ® polyisocyanate harde
Page 9 and 10: ➔ ● ● ● ➔ ● ● IPDI-ba
Page 11 and 12: Relative NCO-Content [%] 90 80 70 6
Page 13: Applications Primer/ Surfacer A160
Page 17 and 18: Hydrophilic polyisocyanates Hydroph
Page 19 and 20: New technologies for car refinish s
Page 21 and 22: Roskydal ® Supply Form [%] in styr
Page 23 and 24: If you have any questions regarding

Desmodur®/Desmophen® Bayhydrol®/Bayhydur® Roskydal®

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