JPS56139533A - Enhancement of heat resistance of polyphenylsilsesquioxane - Google Patents
Enhancement of heat resistance of polyphenylsilsesquioxaneInfo
- Publication number
- JPS56139533A JPS56139533A JP4284180A JP4284180A JPS56139533A JP S56139533 A JPS56139533 A JP S56139533A JP 4284180 A JP4284180 A JP 4284180A JP 4284180 A JP4284180 A JP 4284180A JP S56139533 A JPS56139533 A JP S56139533A
- Authority
- JP
- Japan
- Prior art keywords
- polyphenylsilsesquioxane
- heat resistance
- enhancement
- polymer
- distribution
- 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: To obtain a polyphenylsilsesquioxane with excellent heat resistance, by depositing a polymer of specified MW from a solution of a polyphenylsilsesquioxane widely ranging in MW distribution.
CONSTITUTION: A polyphenylsilsesquioxane of the formula widely ranging in MW distribution is dissolved in an org. solvent (e.g., benzene or methylene chloride). The resulting solution is filtered after a polymer of MW≥100,000 is selectively deposited as a precipitate by the addition of acetone, to obtain a polyphenylsilsesquioxane with high heat resistance.
USE: A material for the tip-coating membrane of a semiconductor device sealed with a ceramic.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4284180A JPS56139533A (en) | 1980-04-03 | 1980-04-03 | Enhancement of heat resistance of polyphenylsilsesquioxane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4284180A JPS56139533A (en) | 1980-04-03 | 1980-04-03 | Enhancement of heat resistance of polyphenylsilsesquioxane |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56139533A true JPS56139533A (en) | 1981-10-31 |
Family
ID=12647208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4284180A Pending JPS56139533A (en) | 1980-04-03 | 1980-04-03 | Enhancement of heat resistance of polyphenylsilsesquioxane |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56139533A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0112168A2 (en) * | 1982-12-16 | 1984-06-27 | Fujitsu Limited | Silicone-type coating resin solution and its preparation |
US6177199B1 (en) | 1999-01-07 | 2001-01-23 | Alliedsignal Inc. | Dielectric films from organohydridosiloxane resins with low organic content |
US6218020B1 (en) | 1999-01-07 | 2001-04-17 | Alliedsignal Inc. | Dielectric films from organohydridosiloxane resins with high organic content |
US6218497B1 (en) | 1997-04-21 | 2001-04-17 | Alliedsignal Inc. | Organohydridosiloxane resins with low organic content |
-
1980
- 1980-04-03 JP JP4284180A patent/JPS56139533A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0112168A2 (en) * | 1982-12-16 | 1984-06-27 | Fujitsu Limited | Silicone-type coating resin solution and its preparation |
US6218497B1 (en) | 1997-04-21 | 2001-04-17 | Alliedsignal Inc. | Organohydridosiloxane resins with low organic content |
US6177199B1 (en) | 1999-01-07 | 2001-01-23 | Alliedsignal Inc. | Dielectric films from organohydridosiloxane resins with low organic content |
US6218020B1 (en) | 1999-01-07 | 2001-04-17 | Alliedsignal Inc. | Dielectric films from organohydridosiloxane resins with high organic content |
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