JPS64120A - Polyamic acid composition - Google Patents
Polyamic acid compositionInfo
- Publication number
- JPS64120A JPS64120A JP62154758A JP15475887A JPS64120A JP S64120 A JPS64120 A JP S64120A JP 62154758 A JP62154758 A JP 62154758A JP 15475887 A JP15475887 A JP 15475887A JP S64120 A JPS64120 A JP S64120A
- Authority
- JP
- Japan
- Prior art keywords
- group
- polyamic acid
- formulas
- groups
- composition
- 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 polyamic acid composition excellent in surface leveling effect and heat resistance, comprising a specified polyamic acid.
CONSTITUTION: A polyamic acid composition of formula I (wherein Ar1 is at least one group selected from among group of formulas II and III and the like groups, Ar2 is at least one group selected from among group formulas IV and V and the like groups, AR3 is at least one group selected from among groups of formulas VI and VII and the like group, and n is 1W100). Said composition is improved in smoothness by protecting the molecular ends with an end-capping agent having a capability of controlling an MW and by introducing an acid dianhydride or a diamine of a structure having rotatability and flexibility into the molecule. Furthermore, the heat resistance is improved by using a carbonamide group-containing diamine which forms a ladder structure in the molecule when converting said composition into a polyimide by heat curing.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-154758A JPH01120A (en) | 1987-06-22 | Polyamic acid composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-154758A JPH01120A (en) | 1987-06-22 | Polyamic acid composition |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS64120A true JPS64120A (en) | 1989-01-05 |
JPH01120A JPH01120A (en) | 1989-01-05 |
Family
ID=
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02252786A (en) * | 1989-03-28 | 1990-10-11 | Hitachi Ltd | Heat-resistant adhesive |
JPH07171584A (en) * | 1993-12-22 | 1995-07-11 | Toda Constr Co Ltd | Aeration equipment in purifying tank |
WO2010071167A1 (en) * | 2008-12-19 | 2010-06-24 | 日産化学工業株式会社 | Alkyl benzene tetracarboxylic dianhydride, manufacturing method thereof, polyimide, and application thereof |
US11158704B2 (en) * | 2016-04-27 | 2021-10-26 | Mitsubishi Electric Corporation | Semiconductor device and power conversion device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4911997A (en) * | 1972-05-12 | 1974-02-01 | ||
JPS50149791A (en) * | 1974-05-22 | 1975-12-01 | ||
JPS54136354A (en) * | 1978-04-14 | 1979-10-23 | Hitachi Ltd | Liquid crystal display element |
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4911997A (en) * | 1972-05-12 | 1974-02-01 | ||
JPS50149791A (en) * | 1974-05-22 | 1975-12-01 | ||
JPS54136354A (en) * | 1978-04-14 | 1979-10-23 | Hitachi Ltd | Liquid crystal display element |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02252786A (en) * | 1989-03-28 | 1990-10-11 | Hitachi Ltd | Heat-resistant adhesive |
JPH07171584A (en) * | 1993-12-22 | 1995-07-11 | Toda Constr Co Ltd | Aeration equipment in purifying tank |
WO2010071167A1 (en) * | 2008-12-19 | 2010-06-24 | 日産化学工業株式会社 | Alkyl benzene tetracarboxylic dianhydride, manufacturing method thereof, polyimide, and application thereof |
US11158704B2 (en) * | 2016-04-27 | 2021-10-26 | Mitsubishi Electric Corporation | Semiconductor device and power conversion device |
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