JPS5714624A - Production of organo poly siloxane polymer - Google Patents
Production of organo poly siloxane polymerInfo
- Publication number
- JPS5714624A JPS5714624A JP8893280A JP8893280A JPS5714624A JP S5714624 A JPS5714624 A JP S5714624A JP 8893280 A JP8893280 A JP 8893280A JP 8893280 A JP8893280 A JP 8893280A JP S5714624 A JPS5714624 A JP S5714624A
- Authority
- JP
- Japan
- Prior art keywords
- silanolate
- monovalent hydrocarbon
- formula
- production
- siloxane polymer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: A cyclic diorganopolysiloxane is polymerized in the presence of an alkali metal hydroxide or silanolate and polyethylene glycol dialkyl ether to produce the titled polymer continuously under good operation environments.
CONSTITUTION: (A) At least one of cyclic diorganopolysiloxanes of formula I (R1, R2 are monovalent hydrocarbon group or its substituted one; m is 3W8) is polymerized in the presence of (B) an alkali metal hydroxide such as potassium hydroxide or its silanolate such as potassium trimethyl silanolate and (C) polyethylene glycol dialkyl ether or formula II (R3, R4 are 1W10C alkyl; n is 2W10). Preferably, the component A is combined with (D) a straight-chain diorganopolysiloxane of formula III (R5WR8 are monovalent hydrocarbon; R9, R10 are hydroxyl, monovalent hydrocarbon; p is 1W200).
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8893280A JPS5714624A (en) | 1980-06-30 | 1980-06-30 | Production of organo poly siloxane polymer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8893280A JPS5714624A (en) | 1980-06-30 | 1980-06-30 | Production of organo poly siloxane polymer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5714624A true JPS5714624A (en) | 1982-01-25 |
Family
ID=13956662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8893280A Pending JPS5714624A (en) | 1980-06-30 | 1980-06-30 | Production of organo poly siloxane polymer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5714624A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03255130A (en) * | 1990-03-05 | 1991-11-14 | Shin Etsu Chem Co Ltd | Production of epoxidized organopolysiloxane |
JPH04272928A (en) * | 1991-02-27 | 1992-09-29 | Shin Etsu Chem Co Ltd | Production of high-molecular-weight organopolysiloxane |
-
1980
- 1980-06-30 JP JP8893280A patent/JPS5714624A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03255130A (en) * | 1990-03-05 | 1991-11-14 | Shin Etsu Chem Co Ltd | Production of epoxidized organopolysiloxane |
JPH0587087B2 (en) * | 1990-03-05 | 1993-12-15 | Shinetsu Chem Ind Co | |
JPH04272928A (en) * | 1991-02-27 | 1992-09-29 | Shin Etsu Chem Co Ltd | Production of high-molecular-weight organopolysiloxane |
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