Claims
- 1. A process for the preparation of the block copolymers which comprises melting by heating a bisphenol, a diaryl carbonate, and a silanol terminated polydiphenyl siloxane; adding a catalyst; heating the stirred mixture while applying a vacuum; cooling; and removing the polymer product from the reactor.
- 2. A process for the preparation of the copolymers which comprises melting by heating a bisphenol, a diaryl carbonate, and a silanol terminated polydiphenyl siloxane in the presence of a catalyst, cooling the reaction mixture, and thereafter separating the copolymer product therefrom.
Parent Case Info
This is a division, of application Ser. No. 546,821, filed Jul. 2, 1990, now U.S. Pat. No. 5,080,987.
US Referenced Citations (9)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1141061 |
Feb 1983 |
CAX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
546821 |
Jul 1990 |
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