JPS5763331A - Preparation of polyamic acid solution - Google Patents
Preparation of polyamic acid solutionInfo
- Publication number
- JPS5763331A JPS5763331A JP13908780A JP13908780A JPS5763331A JP S5763331 A JPS5763331 A JP S5763331A JP 13908780 A JP13908780 A JP 13908780A JP 13908780 A JP13908780 A JP 13908780A JP S5763331 A JPS5763331 A JP S5763331A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- compound
- polyamic acid
- acid solution
- solution
- 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
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
Abstract
PURPOSE: To obtain a polyamic acid solution as a precursor for a polyamide resin having a high molecular weight and suppressed formation of branches, by polycondensing a compound containing an amino group with a compound containing an acid anhydride group in a solvent containing a carboxylic acid.
CONSTITUTION: (A) A compound having two or more amino groups in one molecule, e.g. 4,4'-diaminodiphenylmethane, is polycondensed with (B) a compound having two or more acid anhydride groups in one molecule, e.g. benzophenoetetracarboxylic acid dianhydride, in a solvent containing 0.5W5wt% carboxylic acid, prefrably ≤15C, e.g. monochloroacetic acid, at a reaction temperature of 5W80°C to give a polyamic acid solution of 10W25wt% solid concentration.
EFFECT: A plyimide resin having improved elongation, tensile breaking strength, etc. can be obtained from the solution.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13908780A JPS5763331A (en) | 1980-10-03 | 1980-10-03 | Preparation of polyamic acid solution |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13908780A JPS5763331A (en) | 1980-10-03 | 1980-10-03 | Preparation of polyamic acid solution |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5763331A true JPS5763331A (en) | 1982-04-16 |
JPS6337822B2 JPS6337822B2 (en) | 1988-07-27 |
Family
ID=15237179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13908780A Granted JPS5763331A (en) | 1980-10-03 | 1980-10-03 | Preparation of polyamic acid solution |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5763331A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6361021A (en) * | 1986-09-01 | 1988-03-17 | Kanegafuchi Chem Ind Co Ltd | Production of polyamic acid |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5181899A (en) * | 1975-01-09 | 1976-07-17 | Inst Erementooruganichesukiifu | HORIIMIDOSEIZOHO |
-
1980
- 1980-10-03 JP JP13908780A patent/JPS5763331A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5181899A (en) * | 1975-01-09 | 1976-07-17 | Inst Erementooruganichesukiifu | HORIIMIDOSEIZOHO |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6361021A (en) * | 1986-09-01 | 1988-03-17 | Kanegafuchi Chem Ind Co Ltd | Production of polyamic acid |
Also Published As
Publication number | Publication date |
---|---|
JPS6337822B2 (en) | 1988-07-27 |
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