Reactive emulsifiers based on unsaturated polyurethanes

Details Reactive emulsifiers based on unsaturated polyurethanes Reactive emulsifiers based on unsaturated polyurethanes

C - Chemistry, Metallurgy

08

G

C08G 18/69 (2006.01) C08G 18/65 (2006.01) C08J 3/03 (2006.01) C09D 5/02 (2006.01) C09D 167/08 (2006.01)

Patent

CA 2161397

Polyurethanes which have olefinic double bonds and a content by mass of ethylene oxide units, incorporated via polyethylene glycol, of from 20 to 80% and which are obtainable by reacting (a) at least one organic polyiso- cyanate with (b) at least one polybutadiene derivative which is reactive toward isocyanates, and (c) if desired, one or more diols which contain, in addition, at least one further hydroxyl group or carboxyl group, and (d) a polyoxyalkylene glycol component having a molar mass of from 500 to 10,000 g/mol, wherein the ratio of NCO to OH equivalents, based on all the starting components (a) to (d), is from 0.5:1 to 1.2:1. The polyurethanes are useful, for example, as reactive emulsifiers.

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