C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/80 (2006.01) C07B 61/00 (2006.01) C07C 211/02 (2006.01) C07C 263/18 (2006.01) C07C 265/14 (2006.01) C07C 275/00 (2006.01) C07C 275/62 (2006.01) C08G 18/00 (2006.01) C08G 18/32 (2006.01) C08G 18/78 (2006.01) C08J 7/04 (2006.01) C09D 175/04 (2006.01) C09D 175/12 (2006.01)
Patent
CA 2485156
Storage-stable blocked polyisocyanates prepared by reacting one or more polyisocyanates with one or more biuretizing agents and optionally, catalysts such that in the blocked end product there are 5-45 equivalent percent of biuret groups according to formula (I) (see formula I) based on the sum total of all free and blocked NCO groups; optionally modifying the resulting biuret polyisocyanates with the aid of isocyanate-reactive compounds and/or catalysts, with further reaction of free NCO groups; and subsequently blocking at least 95 mol percent of the remaining free NCO groups with a blocking agent according to the formula R1R2NH, where R1 and R2 independently of one another are aliphatic or cycloaliphatic C1-C12 alkyl radicals. The blocked polyisocyanates can be used to make polyurethane polymers and coating compositions, which can be used to coat substrates.
Baumbach Beate
Fuessel Christian
Halpaap Reinhard
Mager Dieter
Thiebes Christoph
Bayer Materialscience Ag
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
LandOfFree
Polyisocyanates with biuret structure, blocked with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polyisocyanates with biuret structure, blocked with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyisocyanates with biuret structure, blocked with... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1540545