JPS5718729A - Hydroxyphenyl-terminated ladder polysiloxane and its preparation - Google Patents
Hydroxyphenyl-terminated ladder polysiloxane and its preparationInfo
- Publication number
- JPS5718729A JPS5718729A JP9441980A JP9441980A JPS5718729A JP S5718729 A JPS5718729 A JP S5718729A JP 9441980 A JP9441980 A JP 9441980A JP 9441980 A JP9441980 A JP 9441980A JP S5718729 A JPS5718729 A JP S5718729A
- Authority
- JP
- Japan
- Prior art keywords
- sicl
- pref
- hydrolysis
- giving
- condensation
- 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.)
- Granted
Links
Landscapes
- Silicon Polymers (AREA)
Abstract
PURPOSE: To prepare the titled compound capable of giving a thermoset product having excellent heat resistance and adbesivity, and also giving a composition having excellent adhesivity and film strength in combination with a crosslinking agent, by the dehydrative condensation of an intermediate obtained by the hydrolysis of C6H5SiCl3, in the presence of a specifici catalyst.
CONSTITUTION: A hydroxy-terminated intermediate (A) prepared by the hydrolysis of C6H5SiCl3 is dissolved in an organic solvent (pref. a water-insoluble solvent) to obtain a solution having a concentratin of ≤70wt%. The intermediate (A) is subjected to the dehydrative condensation e.g. at 120°C for 4hr using pref. 0.1W 0.2pt.wt., based on 1pt.wt. of the intermediate (A), of a carbodiimide such as dibenzyl carbodiimide as a condensation catalyst. The precipitated urea derivative is separated by filtration, and the reaction liquid is poured into methanol to obtain the objective compound of formula and having number-average molecular weight of 1,000W500,000.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9441980A JPS5850657B2 (en) | 1980-07-09 | 1980-07-09 | Method for producing terminal hydroxyphenyl ladder polysiloxane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9441980A JPS5850657B2 (en) | 1980-07-09 | 1980-07-09 | Method for producing terminal hydroxyphenyl ladder polysiloxane |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5718729A true JPS5718729A (en) | 1982-01-30 |
JPS5850657B2 JPS5850657B2 (en) | 1983-11-11 |
Family
ID=14109710
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9441980A Expired JPS5850657B2 (en) | 1980-07-09 | 1980-07-09 | Method for producing terminal hydroxyphenyl ladder polysiloxane |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5850657B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5081202A (en) * | 1989-11-17 | 1992-01-14 | Mitsubishi Denki Kabushiki Kaisha | High purity phenyl silicone ladder polymer and method for producing the same |
US5179185A (en) * | 1990-01-10 | 1993-01-12 | Mitsubishi Denki Kabushiki Kaisha | High purity hydroxy-terminated phenyl ladder polysiloxane and method for producing the same |
US5399648A (en) * | 1992-12-21 | 1995-03-21 | Mitsubishi Denki Kabushiki Kaisha | High-purity silicone ladder polymer and process producing the same |
US6284858B1 (en) | 1997-03-14 | 2001-09-04 | Nippon Steel Chemical Co., Ltd. | Silicone compounds and process for producing the same |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61150951A (en) * | 1984-12-24 | 1986-07-09 | Fuji Pack Syst:Kk | Supporting tool for resin film winding roll |
-
1980
- 1980-07-09 JP JP9441980A patent/JPS5850657B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5081202A (en) * | 1989-11-17 | 1992-01-14 | Mitsubishi Denki Kabushiki Kaisha | High purity phenyl silicone ladder polymer and method for producing the same |
US5179185A (en) * | 1990-01-10 | 1993-01-12 | Mitsubishi Denki Kabushiki Kaisha | High purity hydroxy-terminated phenyl ladder polysiloxane and method for producing the same |
US5399648A (en) * | 1992-12-21 | 1995-03-21 | Mitsubishi Denki Kabushiki Kaisha | High-purity silicone ladder polymer and process producing the same |
US6284858B1 (en) | 1997-03-14 | 2001-09-04 | Nippon Steel Chemical Co., Ltd. | Silicone compounds and process for producing the same |
Also Published As
Publication number | Publication date |
---|---|
JPS5850657B2 (en) | 1983-11-11 |
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