Method for preparing polycarbonates containing aliphatic ester g

Details Method for preparing polycarbonates containing aliphatic ester g Method for preparing polycarbonates containing aliphatic ester g

1990-06-08

1991-05-14

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528182, C08G 6364

Patent

active

050157205

ABSTRACT:
Polycarbonates containing aliphatic dicarboxylic ester groups, and having glass transition temperatures and processing temperatures lower than the corresponding homopolycarbonates are prepared via an intermediate which is in turn prepared from a dihydroxyaromatic compound and a C.sub.4-6 aliphatic dicarboxylic acid anhydride, preferably succinic anhydride. Phosgenation of said intermediate produces the desired soft segment polycarbonate.

REFERENCES:
patent: 3030331 (1962-04-01), Goldberg
patent: 3169121 (1965-02-01), Goldberg
patent: 4130548 (1978-12-01), Kochanowski
patent: 4238596 (1980-12-01), Quinn
patent: 4238597 (1980-12-01), Markezich et al.
patent: 4286083 (1981-08-01), Kochanowski

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