FR2158424B1 - - Google Patents
Info
- Publication number
- FR2158424B1 FR2158424B1 FR7238685A FR7238685A FR2158424B1 FR 2158424 B1 FR2158424 B1 FR 2158424B1 FR 7238685 A FR7238685 A FR 7238685A FR 7238685 A FR7238685 A FR 7238685A FR 2158424 B1 FR2158424 B1 FR 2158424B1
- Authority
- FR
- France
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
- C07C37/84—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by crystallisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8843871A JPS5126426B2 (en) | 1971-11-05 | 1971-11-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2158424A1 FR2158424A1 (en) | 1973-06-15 |
| FR2158424B1 true FR2158424B1 (en) | 1975-03-28 |
Family
ID=13942787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7238685A Expired FR2158424B1 (en) | 1971-11-05 | 1972-10-31 |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5126426B2 (en) |
| CH (1) | CH554823A (en) |
| DE (1) | DE2250065C3 (en) |
| FR (1) | FR2158424B1 (en) |
| GB (1) | GB1357280A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4147625A (en) * | 1978-04-26 | 1979-04-03 | Continental Oil Company | Method for clarifying discolored trimethylhydroquinone solutions |
| JPS6136236A (en) * | 1984-07-30 | 1986-02-20 | Kawasaki Kasei Chem Ltd | Production of naphthohydroquinone |
| US7541417B2 (en) | 2006-03-30 | 2009-06-02 | Sabic Innovative Plastics Ip B.V. | Process for the purification of dihydric phenols |
| US7528210B2 (en) | 2006-03-30 | 2009-05-05 | Sabic Innovative Plastics Ip B.V. | Method of purification of dihydric phenols |
| CN102659580B (en) * | 2012-04-18 | 2014-01-15 | 天津大学 | Preparation method and crystallization method of 2, 3, 5-tri-methyl hydroquinone diester new crystal |
| CN115043710B (en) * | 2022-05-31 | 2024-03-12 | 武汉华尔生物科技有限公司 | Purification method of high-purity hydroquinone |
-
1971
- 1971-11-05 JP JP8843871A patent/JPS5126426B2/ja not_active Expired
-
1972
- 1972-10-12 DE DE19722250065 patent/DE2250065C3/en not_active Expired
- 1972-10-20 GB GB4849072A patent/GB1357280A/en not_active Expired
- 1972-10-31 FR FR7238685A patent/FR2158424B1/fr not_active Expired
- 1972-11-03 CH CH1606972A patent/CH554823A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5126426B2 (en) | 1976-08-06 |
| DE2250065B2 (en) | 1979-02-15 |
| DE2250065C3 (en) | 1979-10-04 |
| JPS4852729A (en) | 1973-07-24 |
| FR2158424A1 (en) | 1973-06-15 |
| GB1357280A (en) | 1974-06-19 |
| DE2250065A1 (en) | 1973-05-10 |
| CH554823A (en) | 1974-10-15 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |