Patent ID: 6528559
Filing Date: 2003-03-04
Classification: A61P,C07F,C08G,C08K,C09K

Abstract:
A crosslinked phenoxyphosphazene compound characterized in that:at least one phosphazene compound selected from the group consisting of a cyclic phosphazene compound represented by the formula (1) â€ƒwherein m is an integer of 3 to 25 and Ph is phenyl group, and a straight- or branched-chain phosphazene compound represented by the formula (2) â€ƒwherein X1 represents a group â€”N&boxH;P(OPh)3 or a group â€”N&boxH;P(O)OPh, Y1 represents a group â€”P(OPh)4 or a group â€”P(O)(OPh)2, and n is an integer of 3 to 10000 and Ph is as defined above, is crosslinked with at least one crosslinking group selected from the group consisting of o-phenylene group, m-phenylene group, p-phenylene group and bisphenylene group represented by the formula (3) wherein A is â€”C(CH3)2â€”, â€”SO2â€”, â€”Sâ€” or â€”Oâ€” and z is 0 or 1; (a) each of the crosslinking groups is interposed between the two oxygen atoms left after the elimination of phenyl groups from the phosphazene compound; (b) the amount of the phenyl groups in the crosslinked compound is 50 to 99.9% based on the total amount of the phenyl groups in said phosphazene compound represented by the formula (1) and/or said phosphazene compound represented by the formula (2); and (c) the crosslinked phenoxyphosphazene compound has no free hydroxyl groups in the molecule.