JPS57125220A - Preparation of polyamide-imide - Google Patents
Preparation of polyamide-imideInfo
- Publication number
- JPS57125220A JPS57125220A JP56012139A JP1213981A JPS57125220A JP S57125220 A JPS57125220 A JP S57125220A JP 56012139 A JP56012139 A JP 56012139A JP 1213981 A JP1213981 A JP 1213981A JP S57125220 A JPS57125220 A JP S57125220A
- Authority
- JP
- Japan
- Prior art keywords
- aromatic
- nitrotoluene
- solvent
- acid anhydride
- imide
- 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 obtain the powdery aromatic polyamide-imide having improved reproducibility of a reached molecular weight, by subjecting an aromatic tricarboxylic acid anhydride, etc. with an aromatic diisocyanate, etc. to precipitation polycondensation using a nitrotoluene as a solvent.
CONSTITUTION: (A) An aromatic polycarboxylic acid generally comprising ≥50mol% aromatic tricarboxylic acid anhydride (e.g., trimellitic acid anhydride, etc.) is reacted with (B) a polyisocyanate comprising generally ≥70mol% aromatic isocyanate (e.g., p-phenylene diisocyanate, etc.) using (C) a tertiary amine (preferably triethylenediamine, etc.) as a catalyst in (D) a solvent of a nitrotoluene (e.g., p-nitrotoluene, etc.) preferably at 120W180°C for 1W10hr. The amount of the raw material monomers based on the solvent D is preferably 0.2W 1mol/l.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56012139A JPS57125220A (en) | 1981-01-28 | 1981-01-28 | Preparation of polyamide-imide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56012139A JPS57125220A (en) | 1981-01-28 | 1981-01-28 | Preparation of polyamide-imide |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57125220A true JPS57125220A (en) | 1982-08-04 |
JPS6342926B2 JPS6342926B2 (en) | 1988-08-26 |
Family
ID=11797170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56012139A Granted JPS57125220A (en) | 1981-01-28 | 1981-01-28 | Preparation of polyamide-imide |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57125220A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014530955A (en) * | 2011-10-25 | 2014-11-20 | フジフィルム・ハント・ケミカルズ・インコーポレイテッド | Low residual solvent polyamideimide powder from suspension polymerization |
-
1981
- 1981-01-28 JP JP56012139A patent/JPS57125220A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014530955A (en) * | 2011-10-25 | 2014-11-20 | フジフィルム・ハント・ケミカルズ・インコーポレイテッド | Low residual solvent polyamideimide powder from suspension polymerization |
Also Published As
Publication number | Publication date |
---|---|
JPS6342926B2 (en) | 1988-08-26 |
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