JPS5252994A - Preparation of polyamide acid - Google Patents

Preparation of polyamide acid

Info

Publication number
JPS5252994A
JPS5252994A JP12791975A JP12791975A JPS5252994A JP S5252994 A JPS5252994 A JP S5252994A JP 12791975 A JP12791975 A JP 12791975A JP 12791975 A JP12791975 A JP 12791975A JP S5252994 A JPS5252994 A JP S5252994A
Authority
JP
Japan
Prior art keywords
polyamide acid
preparation
expesnsive
pyridines
solvents
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
JP12791975A
Other languages
Japanese (ja)
Other versions
JPS5430434B2 (en
Inventor
Masahiro Harada
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.)
Mitsubishi Gas Chemical Co Inc
Original Assignee
Mitsubishi Gas Chemical Co Inc
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 Mitsubishi Gas Chemical Co Inc filed Critical Mitsubishi Gas Chemical Co Inc
Priority to JP12791975A priority Critical patent/JPS5252994A/en
Publication of JPS5252994A publication Critical patent/JPS5252994A/en
Publication of JPS5430434B2 publication Critical patent/JPS5430434B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)

Abstract

PURPOSE: Easy and economical preparation of polyamide acid having an excellent workability useful as an intermediate of polyimide resin by using a mixed solvent consisting of pyridines and water without using expesnsive solvents.
COPYRIGHT: (C)1977,JPO&Japio
JP12791975A 1975-10-24 1975-10-24 Preparation of polyamide acid Granted JPS5252994A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12791975A JPS5252994A (en) 1975-10-24 1975-10-24 Preparation of polyamide acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12791975A JPS5252994A (en) 1975-10-24 1975-10-24 Preparation of polyamide acid

Publications (2)

Publication Number Publication Date
JPS5252994A true JPS5252994A (en) 1977-04-28
JPS5430434B2 JPS5430434B2 (en) 1979-10-01

Family

ID=14971874

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12791975A Granted JPS5252994A (en) 1975-10-24 1975-10-24 Preparation of polyamide acid

Country Status (1)

Country Link
JP (1) JPS5252994A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63277241A (en) * 1987-01-12 1988-11-15 Hitachi Chem Co Ltd Production of particulate polyimide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63277241A (en) * 1987-01-12 1988-11-15 Hitachi Chem Co Ltd Production of particulate polyimide

Also Published As

Publication number Publication date
JPS5430434B2 (en) 1979-10-01

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