Patent ID: 8017719
Filing Date: 2011-09-13
Classification: C08G,C09D

Abstract:
1. A method for preparing a compound (U) having at least one urethane group and at least one hydroxyl functional group, said method comprising reacting: a) at least one compound (1) having a cyclic carbonate functional group and at least one hydroxyl functional group, wherein the oxygen atom of the hydroxyl group is separated from the carbon atom of the carbonyl group of said cyclic carbonate by from 3 to 5 atoms; b) at least one compound (2) having at least one linear carbonate functional group; c) at least one compound (3) having at least one primary or secondary amine functional group; and d) optionally at least one catalyst (4) optionally in the presence of a solvent, and optionally followed by removal of said solvent and/or of co-products of the reaction, wherein compounds (1), (2) and (3) are brought into contact and then optionally the catalyst (4) is added.