Patent ID: 9018337
Filing Date: 2015-04-28
Classification: C04B,C08G

Abstract:
1. A process for producing an oxyalkylene containing polycondensation product by polycondensing monomers including (A) an aromatic or heteroaromatic compound containing a polyoxyalkylene chain, which is represented by formula (I), wherein D is an unsubstituted or substituted aromatic or heteroaromatic group having from 5 to 10 ring members, optionally phenyl or naphthyl of which each is optionally substituted by one or more substituents selected from the group consisting of OH, —OR R R X is a group selected from H, C E is —O—, —NH—, or —N—; n is 1, when E is —O— or —NH—; or n is 2, when E is —N—; and m is an integer from 1 to 300; and (B) an aromatic or heteroaromatic compound which is different from monomer (A) and is represented by formula (II), F is an unsubstituted or substituted aromatic or heteroaromatic group having from 5 to 10 ring members, optionally phenyl or naphthyl of which each is optionally substituted by one or more substituents selected from the group consisting of OH, —OR R R Y is a group selected from H, C G is —O—, —NH— or —N—; q is 1, when G is —O— or —NH—; or q is 2, when G is —N—; and p is an integer from 0 to 300; and (C) an aldehyde, in the presence of a protonation catalyst, wherein the aldehyde is provided by a fast-releasing aldehyde source and a slow-releasing aldehyde source, wherein the molar ratio of the aldehyde from the fast-releasing aldehyde source and that from the slow-releasing aldehyde source is in the range of 5:1 to 1:1