Preparation of branched polycarbonates and chloroformates, and i

Details Preparation of branched polycarbonates and chloroformates, and i Preparation of branched polycarbonates and chloroformates, and i

1991-01-28

1992-08-25

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Halocarbonate esters

528372, 558260, 558265, 560 80, 560 85, 560 86, C07C 6802, C07C 6996, C07C 6917

Patent

active

051420880

ABSTRACT:
Ester polyphenols such as the tris(bisphenol A) ester of trimellitic acid are prepared by the reaction of the corresponding aromatic poly(acyl halide) with a dihydroxyaromatic compound such as bisphenol A. They may be employed in the preparation of branched polycarbonates via chloroformate oligomer compositions.

REFERENCES:
patent: 4001184 (1977-01-01), Scott

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