Process for preparing polyarylates

Details Process for preparing polyarylates Process for preparing polyarylates

C - Chemistry, Metallurgy

08

L

400/3001, 400/50

C08L 67/00 (2006.01) C08G 63/193 (2006.01) C08G 63/64 (2006.01) C08G 63/688 (2006.01) C08L 51/00 (2006.01) C08L 53/00 (2006.01) C08L 67/03 (2006.01) C08L 77/12 (2006.01) C08L 79/08 (2006.01) C08L 83/10 (2006.01)

Patent

CA 1191987

Abstract of the Disclosure Described herein is an improved process for preparing a polyarylate having a reduced viscosity of from about 0.1 to greater than 1.0 dl/gm which process comprises the following steps: a) reacting an acid anhydride derived from an acid containing from 2 to 8 carbon atoms with at least one dihydric phenol to form the corresponding diester; and b) reacting said diester with at least one aromatic dicarboxylic acid at a temperature sufficient to form the polyarylate, wherein the improvement comprises carrying out said process in the presence of at least one thermoplastic polymer. Also described herein are the products produced by said process.

423902

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