JPS649237A - Heat-resistant polyimide film - Google Patents
Heat-resistant polyimide filmInfo
- Publication number
- JPS649237A JPS649237A JP62238059A JP23805987A JPS649237A JP S649237 A JPS649237 A JP S649237A JP 62238059 A JP62238059 A JP 62238059A JP 23805987 A JP23805987 A JP 23805987A JP S649237 A JPS649237 A JP S649237A
- Authority
- JP
- Japan
- Prior art keywords
- hydrocarbon residue
- heat
- formula
- polyimide film
- group
- 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
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
PURPOSE:To obtain a polyimide film improved in heat resistance and electrical insulation property after heat deterioration without changing its molecular skeleton, containing a specified organotitanium compound. CONSTITUTION:A heat-resistant polyimide film having a retentivity of a dielectric breakdown voltage >=75% after heat deterioration, containing 5-500ppm (in terms of the titanium element based on the film weight) of a substance selected from organotitanium compounds, for example, a compound of formula I (wherein m=0-4, X is a group of formula II, III or IV, R1 is a 3-13C hydrocarbon residue, R2 and R3 are each a 3-18C hydrocarbon residue, R4 is a 3-13C hydrocarbon residue or a group of formula V, and R5 is a 2-13C hydrocarbon residue) and a substance having a structural formula VI (wherein n=0-6, R6 is a 3-18C hydrocarbon group, and R7 is a 3-13C hydrocarbon residue), e.g., isopropyltris(dioctyl pyrophosphate)titanate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62238059A JPS649237A (en) | 1987-03-24 | 1987-09-22 | Heat-resistant polyimide film |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6981887 | 1987-03-24 | ||
JP62238059A JPS649237A (en) | 1987-03-24 | 1987-09-22 | Heat-resistant polyimide film |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS649237A true JPS649237A (en) | 1989-01-12 |
Family
ID=26410988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62238059A Pending JPS649237A (en) | 1987-03-24 | 1987-09-22 | Heat-resistant polyimide film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS649237A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5388445A (en) * | 1992-10-16 | 1995-02-14 | Nkk Corporation | Method for determining arrival and amplitude of a wave front and apparatus therefor |
US5428989A (en) * | 1992-10-16 | 1995-07-04 | Nkk Corporation | Method for locating a pressure transient source in a pipeline and apparatus therefor |
JP2006339164A (en) * | 1998-11-20 | 2006-12-14 | Kaneka Corp | Insulating tape for covering electric wire |
-
1987
- 1987-09-22 JP JP62238059A patent/JPS649237A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5388445A (en) * | 1992-10-16 | 1995-02-14 | Nkk Corporation | Method for determining arrival and amplitude of a wave front and apparatus therefor |
US5428989A (en) * | 1992-10-16 | 1995-07-04 | Nkk Corporation | Method for locating a pressure transient source in a pipeline and apparatus therefor |
JP2006339164A (en) * | 1998-11-20 | 2006-12-14 | Kaneka Corp | Insulating tape for covering electric wire |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69429364D1 (en) | USE OF STEROID DERIVATIVES AS A MEDICINAL PRODUCT | |
DE3852931D1 (en) | Liquid crystalline cyclopropyl alkyl or alkenyl heterocycles, process for their preparation and their use in liquid crystalline mixtures. | |
DE59510507D1 (en) | POLY (PARAPHENYLENE VINYLENE) DERIVATIVES AND THEIR USE AS ELECTROLUMINESCENT MATERIALS | |
NO914558L (en) | PREPARATION AND USE OF CONDENSED HETEROCYCLIC COMPOUND | |
NO862559L (en) | PROCEDURE FOR PREPARING PYRIDON CARBOXYL ACID DERIVATIVES. | |
ES8706669A1 (en) | Phenylalkyl derivatives. | |
JPS649237A (en) | Heat-resistant polyimide film | |
Sisido et al. | Nuclear magnetic resonance spectra of poly (N‐alkylamino acid) s | |
DE69203551D1 (en) | Biodegradable copolyester of 4-hydroxyproline and pharmaceutical composition containing it. | |
ATE130854T1 (en) | CHIRAL PHOSPHINIGIC ACID-BORANE DERIVATIVES, THEIR PRODUCTION AND USE. | |
IT1132204B (en) | PROCEDURE FOR PREPARING A LOW MOLECULAR AROMATIC OLIGOESTER HAVING TWO TERMINAL OXYDRYL GROUPS | |
JPS5393333A (en) | Thyristor converter | |
ATE15184T1 (en) | FLUORPHENOXYBENZYLESTER, THEIR PRODUCTION AND USE AS PESTICIDES. | |
Bird et al. | Reaction of 6, 7-dimethoxy-3-isochromanone with hydrazine: a reinvestigation | |
SU1003310A1 (en) | High-voltage pulse generator | |
JPS54121291A (en) | Catalyst for polymerization of olefins | |
JPS53142621A (en) | Ac-ac converter | |
KR890007329A (en) | Dielectric Compositions for Multilayer Ceramic Capacitors | |
Smyth | EFFECT OF IMPURITIES ON ELECTRICAL CONDUCTIVITY OF CAPACITOR DIELECTRICS. | |
DE3770994D1 (en) | DIELECTRIC COMPOSITION OF TYPE I BASED ON NEODYMIUM TITANATE. | |
Lejeune et al. | Dielectric materials based on PbMg sub 1 sub/ sub 3 Nb sub 2 sub/ sub 3 O sub 3 for multilayer capacitors | |
TH3613EX (en) | Heterocyclic compounds | |
TH6003EX (en) | Heterochyclic substances that have been replaced with nitro. | |
TH6012EX (en) | Ferroelectric ceramics | |
KR870004956A (en) | Method for preparing heterocyclic aromatic amide |