JPS57125220A - Preparation of polyamide-imide - Google Patents

Preparation of polyamide-imide

Info

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
Application number
JP56012139A
Other languages
Japanese (ja)
Other versions
JPS6342926B2 (en
Inventor
Kenji Nagaoka
Shoji Ueno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP56012139A priority Critical patent/JPS57125220A/en
Publication of JPS57125220A publication Critical patent/JPS57125220A/en
Publication of JPS6342926B2 publication Critical patent/JPS6342926B2/ja
Granted legal-status Critical Current

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
JP56012139A 1981-01-28 1981-01-28 Preparation of polyamide-imide Granted JPS57125220A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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