Title:
PRODUCTION OF DIGLYME SOLUBLE SILOXANE-IMIDE COPOLYMER
Document Type and Number:
Japanese Patent JPS61118425
Kind Code:
A
Abstract:
There is provided a process for making diglyme soluble siloxane-imide copolymers consisting essentially of (a) heating a mixture of diglyme, azeotropic solvent, organic diamine and bis-aminoalkyl-terminated polydiorganosiloxane to reflux and (b) adding to the refluxing mixture of (a) an organic dianhydride of the formula where Ar is an aromatic or aromatic containing group and Y is oxygen or sulfur. Block copolymers are obtained if the bis-aminoalkyl-terminated polydiorganosiloxane is not added to the reaction mass until after the reaction of the organic diamine and organic dianhydride has been completed.
Inventors:
BIBIAN BURIONESU BARENTEI
Application Number:
JP23149085A
Publication Date:
June 05, 1986
Filing Date:
October 18, 1985
Export Citation:
Assignee:
GEN ELECTRIC
International Classes:
C08L79/08; C08G73/00; C08G73/10; C08G77/00; C08G77/42; C08G77/455; (IPC1-7): C08G73/10; C08G77/42; C08L79/08
Domestic Patent References:
| JPS5555555A | 1980-04-23 | |||
| JPS55144026A | 1980-11-10 | |||
| JPS57143327A | 1982-09-04 | |||
| JPS57168943A | 1982-10-18 | |||
| JPS587473A | 1983-01-17 | |||
| JPS5827721A | 1983-02-18 | |||
| JPS58152018A | 1983-09-09 | |||
| JPS6162525A | 1986-03-31 | |||
| JPS60231490A | 1985-11-18 |
Foreign References:
| US4030948A | 1977-06-21 |
Attorney, Agent or Firm:
Shusaku Yamamoto