Process for the preparation of carbonic acid bis-diphenol esters

Details Process for the preparation of carbonic acid bis-diphenol esters Process for the preparation of carbonic acid bis-diphenol esters

1978-05-24

1980-08-05

Phynes, Lucille M.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

260463, 525469, 528171, 528176, 528179, 528180, C08G 6376, C08L 6702, C08L 6900, C08F28302

Patent

active

042162980

ABSTRACT:
The present invention relates to the transesterification of the carbonic acid aryl esters prepared according to German Published Patent Specification 2,651,639 (which corresponds to U.S. Patent application Ser. No. 854,174, filed Oct. 25, 1977) with an excess of diphenol for the preparation of polyester-diol bis-diphenol carbonate. The present invention further relates to the polyester-diol bis-diphenol carbonates obtained according to the invention and their use for the preparation of polyester/polycarbonates and to the polyester/polycarbonates so prepared.

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Merrill, Stewart H., Journal of Polymer Science, vol. 55, (1961) pp. 343-352.
Goldberg, Eugene P., Journal of Polymer Science:Part C, No. 4, (1962), pp. 707-730.
Merrill, Stewart H. et al., Journal of Polymer Science:Part A, vol. 3 (1965) pp. 2189-2203.

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