Process for stabilizing polyarylates with an aromatic phenol

Details Process for stabilizing polyarylates with an aromatic phenol Process for stabilizing polyarylates with an aromatic phenol

Category

C - Chemistry, Metallurgy

Subcategory

08

Subsubcategory

G

CPC

402/189, 402/202

IPC codes

C08G 63/18 (2006.01) C08G 63/19 (2006.01) C08G 63/20 (2006.01) C08G 63/46 (2006.01) C08G 63/68 (2006.01) C08G 63/83 (2006.01)

Type

Patent

Patent number

CA 1155596

Description

ABSTRACT OF THE DISCLOSURE Described herein is a process for preparing melt stable polyarylates having a reduced viscosity of from about 0.4 to greater than 1.0 dl/g which comprises reacting a diester derivative of a dihydric phenol with an aromatic dicarboxylic acid to produce a polyarylate having a reduced viscosity of from about 0.5 to greater than 1.0 dl/g, and then adding a stabilizing amount of an aromatic phenol to the polyarylate to form a poly- arylate substantially free of anhydride linkages.

Application Number

363255

Affiliated with

Also associated with

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