JPS5763331A - Preparation of polyamic acid solution - Google Patents

Preparation of polyamic acid solution

Info

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
Application number
JP13908780A
Other languages
Japanese (ja)
Other versions
JPS6337822B2 (en
Inventor
Kosaku Nagano
Kazuya Yonezawa
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.)
Kanegafuchi Chemical Industry Co Ltd
Original Assignee
Kanegafuchi Chemical Industry 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 Kanegafuchi Chemical Industry Co Ltd filed Critical Kanegafuchi Chemical Industry Co Ltd
Priority to JP13908780A priority Critical patent/JPS5763331A/en
Publication of JPS5763331A publication Critical patent/JPS5763331A/en
Publication of JPS6337822B2 publication Critical patent/JPS6337822B2/ja
Granted legal-status Critical Current

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
JP13908780A 1980-10-03 1980-10-03 Preparation of polyamic acid solution Granted JPS5763331A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5181899A (en) * 1975-01-09 1976-07-17 Inst Erementooruganichesukiifu HORIIMIDOSEIZOHO

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5181899A (en) * 1975-01-09 1976-07-17 Inst Erementooruganichesukiifu HORIIMIDOSEIZOHO

Cited By (1)

* Cited by examiner, † Cited by third party
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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