JPS57149244A - Purification of 4,4'-diphenyldicarboxylic acid - Google Patents
Purification of 4,4'-diphenyldicarboxylic acidInfo
- Publication number
- JPS57149244A JPS57149244A JP3529181A JP3529181A JPS57149244A JP S57149244 A JPS57149244 A JP S57149244A JP 3529181 A JP3529181 A JP 3529181A JP 3529181 A JP3529181 A JP 3529181A JP S57149244 A JPS57149244 A JP S57149244A
- Authority
- JP
- Japan
- Prior art keywords
- diphenyldicarboxylic acid
- compound
- dissolving
- reprecipitation
- recrystallization
- 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.)
- Pending
Links
- NEQFBGHQPUXOFH-UHFFFAOYSA-N 4-(4-carboxyphenyl)benzoic acid Chemical compound C1=CC(C(=O)O)=CC=C1C1=CC=C(C(O)=O)C=C1 NEQFBGHQPUXOFH-UHFFFAOYSA-N 0.000 title abstract 3
- 238000000746 purification Methods 0.000 title 1
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 abstract 4
- 150000001875 compounds Chemical class 0.000 abstract 3
- 238000001953 recrystallisation Methods 0.000 abstract 2
- 238000001226 reprecipitation Methods 0.000 abstract 2
- 239000002904 solvent Substances 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To recover efficiently the titled high-purity substance useful as an improved raw material for polymers, by using dimethyl sulfoxide dissolving especially 4,4'-diphenylcarboxylic acid as a solvent, purifying it through recrystallization or reprecipitation.
CONSTITUTION: In purifying 4,4'-diphenyldicarboxylic acid through recrystallization or reprecipitation, 7W25pts.wt., preferably 9W20pts.wt. based on 1pts.wt. 4,4'- diphenyldicarboxylic acid of dimethyl sulfoxide as a solvent is used. The dissolving temperature is 70W140°C, preferably 80W120°C, and the solution prepared in the ratio at the dissolving temperature is allowed to be cooled to near the room temperature to recrystallize and to precipitate the above-mentioned compound. This compound is filtered off at about 20W40°C, and washed, to purify and to recover the desired high-purity compound.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3529181A JPS57149244A (en) | 1981-03-13 | 1981-03-13 | Purification of 4,4'-diphenyldicarboxylic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3529181A JPS57149244A (en) | 1981-03-13 | 1981-03-13 | Purification of 4,4'-diphenyldicarboxylic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57149244A true JPS57149244A (en) | 1982-09-14 |
Family
ID=12437664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3529181A Pending JPS57149244A (en) | 1981-03-13 | 1981-03-13 | Purification of 4,4'-diphenyldicarboxylic acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57149244A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002128729A (en) * | 2000-10-23 | 2002-05-09 | Nippon Steel Chem Co Ltd | Method for producing high-purity 4,4'- biphenyldicarboxylic acid |
-
1981
- 1981-03-13 JP JP3529181A patent/JPS57149244A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002128729A (en) * | 2000-10-23 | 2002-05-09 | Nippon Steel Chem Co Ltd | Method for producing high-purity 4,4'- biphenyldicarboxylic acid |
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