C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 175/04 (2006.01) C08G 18/08 (2006.01) C08G 18/12 (2006.01) C08G 18/65 (2006.01)
Patent
CA 2092157
92/K 019 J Abstract of the disclosure: Water-thinnable two-component coating preparation, a process for its preparation, and its use Water-thinnable two-component coating preparation, comprising a) a polyisocyanate component comprising one or more organic polyisocyanates, and b) a polyurethane resin prepared by 1. reacting (A) polyisocyanates with (B) polyols having an average molecular weight Mn of at least 400, (C) optionally low molecular weight polyols and (D) compounds having at least two groups which are reactive toward isocyanate groups and at least one group which is capable of anion formation, to give a prepolymer containing free NCO groups and 2. reacting the prepolymer prepared in step 1 with at least one of the components: (E) low molecular weight polyols carrying no further groups which are reactive toward isocyanate groups, these compounds being employed in excess; (F) compounds which are monofunctional or contain active hydrogen of differing reactivity, and are different from (E), and optionally (G) compounds which are different from (B), (C), (D), (E) and (F) and contain at least two groups which react with NCO groups.
Frank Udo
Schwab Michael
Walz Gerd
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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