Production of low molecular weight polyanhydrides

Details Production of low molecular weight polyanhydrides Production of low molecular weight polyanhydrides

C - Chemistry, Metallurgy

08

F

260/364.6

C08F 4/12 (2006.01) C08F 212/06 (2006.01) C08F 222/06 (2006.01) C08G 59/42 (2006.01)

Patent

CA 1078401

INVENTION: PRODUCTION OF LOW MOLECULAR WEIGHT POLYANHYDRIDES INVENTORS: HAROLD W. TULLER AND RALPH W. NUSSBAUM ABSTRACT OF THE DISCLOSURE In a process for the production of a low molecular weight polyanhydride having a softening point within the range of about 111 to 156°C. by the mass polymerization reaction of a maleic monomer and at least one alkyl-substituted styrene at a temperature in the range of about 140 to 200°C., the improvement comprising employing an alkali metal bifluoride, preferably potassium bifluoride, as catalyst for the reaction.

288845

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