JPS57133126A - Preparation of polyamide-imide - Google Patents
Preparation of polyamide-imideInfo
- Publication number
- JPS57133126A JPS57133126A JP56017556A JP1755681A JPS57133126A JP S57133126 A JPS57133126 A JP S57133126A JP 56017556 A JP56017556 A JP 56017556A JP 1755681 A JP1755681 A JP 1755681A JP S57133126 A JPS57133126 A JP S57133126A
- Authority
- JP
- Japan
- Prior art keywords
- imide
- polyamide
- solvent
- sulfolane
- pref
- 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
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
- Polyurethanes Or Polyureas (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
Abstract
PURPOSE: To prepare a polyamide-imide having high molecular weight in the form of a resin solution which is most suitable for varnish, by reacting a tribasic acid anhydride with a diisocyanate compound in sulfolane solvent in the presence of a tertiary amine catalyst.
CONSTITUTION: A sulfolane solution of the objective polyamide-imide can be prepared by the polycondensation reaction of (A) a tribasic acid anhydride (e.g. trimellitic anhydride) with (B) a diisocyanate compound (e.g. diphenylmethane diisocyanate) in (C) a sulfolane solvent (pref. purified by distillation on granular NaOH) in the presence of (D) a tertiary amine catalyst (e.g. triethylamine) usually at about 120W150°C removing the evolving CO2 gas from the reaction system. The amount of the solvent (C) is pref. selected to give concentration of the produced polymer of about 10W20wt%.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56017556A JPS57133126A (en) | 1981-02-10 | 1981-02-10 | Preparation of polyamide-imide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56017556A JPS57133126A (en) | 1981-02-10 | 1981-02-10 | Preparation of polyamide-imide |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57133126A true JPS57133126A (en) | 1982-08-17 |
JPS6340811B2 JPS6340811B2 (en) | 1988-08-12 |
Family
ID=11947182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56017556A Granted JPS57133126A (en) | 1981-02-10 | 1981-02-10 | Preparation of polyamide-imide |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57133126A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0098350A2 (en) * | 1982-04-16 | 1984-01-18 | Sumitomo Chemical Company, Limited | Process for producing aromatic polyamide-imide |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2021045154A1 (en) | 2019-09-06 | 2021-03-11 | ||
TW202120586A (en) | 2019-09-06 | 2021-06-01 | 日商三菱瓦斯化學股份有限公司 | Polycarbonate resin composition |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5147999A (en) * | 1974-10-23 | 1976-04-24 | Hitachi Ltd | |
JPS5284288A (en) * | 1976-01-07 | 1977-07-13 | Hitachi Ltd | Preparation of polyimides soluble in solvents |
-
1981
- 1981-02-10 JP JP56017556A patent/JPS57133126A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5147999A (en) * | 1974-10-23 | 1976-04-24 | Hitachi Ltd | |
JPS5284288A (en) * | 1976-01-07 | 1977-07-13 | Hitachi Ltd | Preparation of polyimides soluble in solvents |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0098350A2 (en) * | 1982-04-16 | 1984-01-18 | Sumitomo Chemical Company, Limited | Process for producing aromatic polyamide-imide |
Also Published As
Publication number | Publication date |
---|---|
JPS6340811B2 (en) | 1988-08-12 |
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