Method for the preparation of multiply-branched aromatic...

Details Method for the preparation of multiply-branched aromatic... Method for the preparation of multiply-branched aromatic...

C - Chemistry, Metallurgy

08

G

C08G 63/68 (2006.01) C08G 63/06 (2006.01) C08G 83/00 (2006.01)

Patent

CA 2078828

METHOD FOR THE PREPARATION OF MULTIPLY-BRANCHED AROMATIC POLYESTERS Abstract of the Disclosure An improved method for producing multiply- branched polyester comprising condensing a reactant having the general formula Z1-Ar-(Z2)j, wherein j is 2 or 3, Ar is an aryl or heteroaryl group having from 1 to 3, solitary or linked or fused, five or six membered rings, and one of Z1 and Z2 is a carboxyl group and the other is is a group having the general formula Image , wherein R is an alkyl group having from 1 to 3 carbon atoms, X is selected from the group consisting of fluoro and chloro and g is an integer from 0 to about 7.

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