C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 63/64 (2006.01) C08G 18/08 (2006.01) C08G 18/42 (2006.01) C08G 18/44 (2006.01) C08G 18/66 (2006.01) C08G 63/685 (2006.01) C09D 167/00 (2006.01) C09D 169/00 (2006.01) C09D 175/04 (2006.01) C09D 175/06 (2006.01) C09K 3/10 (2006.01)
Patent
CA 2096287
The present invention relates to water dilutable, urethane group-containing polyester polyols having an acid number of 6 to 45 mg KOH/g, wherein 25 to 100% of the acid groups are neutralized by bases, a hydroxyl number of 20 to 250 mg KOH/g, a molecular weight (Mw) of 2,000 to 150,000 and a urethane content (-NH-CO-0-) of 2 to 16% by weight, wherein the polyester polyol is the at least partly neutralized reaction product of a) 35 to 90% by weight of branched polyester polyols having a hydroxyl number of 40 to 600 and prepared from a1) 0 to 60% by weight of monocarboxylic acids, a2) 6 to 65% by weight of di- and/or tricarboxylic acids or their anhydrides, a3) 10 to 70% by weight of alcohols, a4) 0 to 35% by weight of monoalcohols, a5) 0 to 30% by weight of hydroxycarboxylic acids, aminocarboxylic acids, lactones, lactams and aminoalcohols and a6) 0 to 45% by weight of polycarbonate polyols, b) 0.5 to 8.5% by weight of hydroxycarboxylic acids c) 0 to 15% by weight of compounds containing OH, NH and/or NH2 groups and having a molecular weight of 32 to 500, d) 3 to 33% by weight of compounds containing isocyanate groups and having a molecular weight of 168 to 2,000 and e) 0 to 45% by weight of polycarbonate polyols, wherein the percentages of a) to e) and a1) to a6) add up to 100% and wherein the urethane group-containing polyester polyols contain 1 to 25% by weight of carbonate groups (-0-CO-0-) incorporated through components e) and/or a6).
Blum Harald
Bock Manfred
Kahl Lothar
Yuva Nusret
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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