CH470336A - Process for the purification of impure terephthalic acid - Google Patents
Process for the purification of impure terephthalic acidInfo
- Publication number
- CH470336A CH470336A CH1731565A CH1731565A CH470336A CH 470336 A CH470336 A CH 470336A CH 1731565 A CH1731565 A CH 1731565A CH 1731565 A CH1731565 A CH 1731565A CH 470336 A CH470336 A CH 470336A
- Authority
- CH
- Switzerland
- Prior art keywords
- purification
- terephthalic acid
- impure terephthalic
- impure
- acid
- Prior art date
Links
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 title 2
- 238000000034 method Methods 0.000 title 1
- 238000000746 purification Methods 0.000 title 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D7/00—Sublimation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US41848264A | 1964-12-15 | 1964-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH470336A true CH470336A (en) | 1969-03-31 |
Family
ID=23658285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1731565A CH470336A (en) | 1964-12-15 | 1965-12-15 | Process for the purification of impure terephthalic acid |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE673809A (en) |
| CH (1) | CH470336A (en) |
| DE (1) | DE1493132C3 (en) |
| FR (1) | FR1497466A (en) |
| GB (1) | GB1078660A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109646987B (en) * | 2019-01-10 | 2024-03-26 | 合肥百思智能装备有限公司 | Continuous feeding and discharging high-vacuum organic micromolecule purifying special equipment |
| CN119588003A (en) * | 2024-12-05 | 2025-03-11 | 万华化学集团股份有限公司 | A purification device and its application and dimethyl carbonate purification method |
-
1965
- 1965-12-14 GB GB5303565A patent/GB1078660A/en not_active Expired
- 1965-12-15 FR FR42461A patent/FR1497466A/en not_active Expired
- 1965-12-15 BE BE673809A patent/BE673809A/xx unknown
- 1965-12-15 CH CH1731565A patent/CH470336A/en not_active IP Right Cessation
- 1965-12-15 DE DE19651493132 patent/DE1493132C3/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1497466A (en) | 1967-10-13 |
| DE1493132B2 (en) | 1973-05-17 |
| GB1078660A (en) | 1967-08-09 |
| BE673809A (en) | 1966-06-15 |
| DE1493132A1 (en) | 1969-05-14 |
| DE1493132C3 (en) | 1973-12-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |