JPS57179223A - Preparation of polyamide acid - Google Patents
Preparation of polyamide acidInfo
- 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
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
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)
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 |
-
1981
- 1981-04-28 JP JP56063328A patent/JPS57179223A/en active Granted
Cited By (1)
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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