JPS57179223A - Preparation of polyamide acid - Google Patents

Preparation of polyamide acid

Info

Publication number
JPS57179223A
JPS57179223A JP56063328A JP6332881A JPS57179223A JP S57179223 A JPS57179223 A JP S57179223A JP 56063328 A JP56063328 A JP 56063328A JP 6332881 A JP6332881 A JP 6332881A JP S57179223 A JPS57179223 A JP S57179223A
Authority
JP
Japan
Prior art keywords
acid
formula
group
diisocyanate
polyamide acid
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
JP56063328A
Other languages
Japanese (ja)
Other versions
JPS646224B2 (en
Inventor
Masanori Osawa
Motoo Kawamata
Toshihiro Toyoda
Masayoshi Ito
Masahiro Jinno
Kazumi Mizutani
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals 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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP56063328A priority Critical patent/JPS57179223A/en
Priority to US06/351,602 priority patent/US4395531A/en
Priority to NL8200986A priority patent/NL8200986A/en
Priority to DE19823208697 priority patent/DE3208697A1/en
Priority to IT20148/82A priority patent/IT1150683B/en
Priority to FR8204256A priority patent/FR2501698A1/en
Priority to CH1563/82A priority patent/CH654844A5/en
Priority to GB8207307A priority patent/GB2094816B/en
Priority to CA000398194A priority patent/CA1175195A/en
Publication of JPS57179223A publication Critical patent/JPS57179223A/en
Publication of JPS646224B2 publication Critical patent/JPS646224B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a high-molecular weight linear polyamide acid having no polymer with branched chain and a network structure, by reacting a tricarboxylic acid with a tetracarboxylic acid and a diisocyanate in the presence of a monoalkali metal salt of a dicarboxylic acid.
CONSTITUTION: (A) A tricarboxylic acid (preferably pentane-1,2,5-tricarboxylic acid etc.) shown by the formulaI(R1 is ≥3C trifunctional group, etc.) and/or a tetracarboxylic acid (preferably butane-1,2,3,4-tetracarboxylic acid, etc.) shown by the formula II (R2 ≥4C tetrafunctional group, etc.) are reacted with (B) a diisocyanate (preferably hexamethylene-1,6-diisocyanate, etc.) shown by the formula III (R3 is ≥2C bifunctional group, etc.) in the presence of a monoalkali metal salt of a dicarboxylic acid (preferably monolithium adipate, etc.) shown by the formula IV (R4 is R3; M is alkali metal or IA group) to give the desired polyamide acid having a repeating unit shown by the formula V and/or formula VI.
COPYRIGHT: (C)1982,JPO&Japio
JP56063328A 1981-03-14 1981-04-28 Preparation of polyamide acid Granted JPS57179223A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP56063328A JPS57179223A (en) 1981-04-28 1981-04-28 Preparation of polyamide acid
US06/351,602 US4395531A (en) 1981-03-14 1982-02-23 Process for the preparation of polyamide compounds by the reaction of polycarboxylic acids with diisocyanates in the presence of at least one mono-alkali metal salt of dicarboxylic acid
NL8200986A NL8200986A (en) 1981-03-14 1982-03-10 METHOD FOR PREPARING POLYAMIDE COMPOUNDS.
DE19823208697 DE3208697A1 (en) 1981-03-14 1982-03-11 METHOD FOR PRODUCING POLYAMIDE COMPOUNDS
IT20148/82A IT1150683B (en) 1981-03-14 1982-03-12 PROCESS FOR THE PREPARATION OF POLYAMIDE COMPOUNDS
FR8204256A FR2501698A1 (en) 1981-03-14 1982-03-12 PROCESS FOR THE PREPARATION OF POLYAMIDE-TYPE COMPOUNDS USING ALKALINE MONO-METAL SALT OF DICARBOXYLIC ACID
CH1563/82A CH654844A5 (en) 1981-03-14 1982-03-12 Method for producing polyamide compounds.
GB8207307A GB2094816B (en) 1981-03-14 1982-03-12 Process for the preparation of polyamide compounds
CA000398194A CA1175195A (en) 1981-03-14 1982-03-12 Process for the preparation of polyamide compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56063328A JPS57179223A (en) 1981-04-28 1981-04-28 Preparation of polyamide acid

Publications (2)

Publication Number Publication Date
JPS57179223A true JPS57179223A (en) 1982-11-04
JPS646224B2 JPS646224B2 (en) 1989-02-02

Family

ID=13226068

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56063328A Granted JPS57179223A (en) 1981-03-14 1981-04-28 Preparation of polyamide acid

Country Status (1)

Country Link
JP (1) JPS57179223A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015522689A (en) * 2012-07-20 2015-08-06 ローディア オペレーションズ Novel polyamide, process for its preparation and use thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015522689A (en) * 2012-07-20 2015-08-06 ローディア オペレーションズ Novel polyamide, process for its preparation and use thereof

Also Published As

Publication number Publication date
JPS646224B2 (en) 1989-02-02

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