CH570964A5 - - Google Patents
Info
- Publication number
- CH570964A5 CH570964A5 CH1560771A CH1560771A CH570964A5 CH 570964 A5 CH570964 A5 CH 570964A5 CH 1560771 A CH1560771 A CH 1560771A CH 1560771 A CH1560771 A CH 1560771A CH 570964 A5 CH570964 A5 CH 570964A5
- Authority
- CH
- Switzerland
Links
Classifications
-
- 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
-
- 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
- C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11755670 | 1970-12-25 | ||
| JP11753670 | 1970-12-25 | ||
| JP12395570 | 1970-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH570964A5 true CH570964A5 (https=) | 1975-12-31 |
Family
ID=27313400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1560771A CH570964A5 (https=) | 1970-12-25 | 1971-10-26 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3857881A (https=) |
| BE (1) | BE771942A (https=) |
| CA (1) | CA959071A (https=) |
| CH (1) | CH570964A5 (https=) |
| DE (1) | DE2141195A1 (https=) |
| FR (1) | FR2119308A5 (https=) |
| NL (1) | NL7111438A (https=) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0927714B1 (en) * | 1997-03-21 | 2002-04-10 | Sumikin Chemical Co., Ltd. | Process for the separation of nitrotoluic acid isomers |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2734914A (en) * | 1956-02-14 | Isophthalic acids | ||
| US2741633A (en) * | 1952-11-17 | 1956-04-10 | Union Oil Co | Separation of isophthalic and terephthalic acids |
| US2829160A (en) * | 1953-10-12 | 1958-04-01 | Chemstrand Corp | Purification of terephthalic acid |
| US2811548A (en) * | 1954-07-30 | 1957-10-29 | Chemstrand Corp | Method of purifying aromatic dicarboxylic acids |
| US2862963A (en) * | 1956-05-29 | 1958-12-02 | Hoechst Ag | Process of purifying terephthalic acid |
| DE1147216B (de) * | 1961-07-22 | 1963-04-18 | Basf Ag | Verfahren zur Abscheidung von cyclischen Dicarbonsaeuren aus ihren Alkalisalzen |
-
1971
- 1971-08-03 CA CA119,701A patent/CA959071A/en not_active Expired
- 1971-08-03 US US00168576A patent/US3857881A/en not_active Expired - Lifetime
- 1971-08-17 DE DE19712141195 patent/DE2141195A1/de active Pending
- 1971-08-19 NL NL7111438A patent/NL7111438A/xx unknown
- 1971-08-30 BE BE771942A patent/BE771942A/xx unknown
- 1971-09-14 FR FR7133069A patent/FR2119308A5/fr not_active Expired
- 1971-10-26 CH CH1560771A patent/CH570964A5/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NL7111438A (https=) | 1972-06-27 |
| DE2141195A1 (https=) | 1972-08-10 |
| FR2119308A5 (https=) | 1972-08-04 |
| US3857881A (en) | 1974-12-31 |
| BE771942A (fr) | 1971-12-31 |
| CA959071A (en) | 1974-12-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased | ||
| PL | Patent ceased |