GB1238193A - - Google Patents
Info
- Publication number
- GB1238193A GB1238193A GB5034768A GB5034768A GB1238193A GB 1238193 A GB1238193 A GB 1238193A GB 5034768 A GB5034768 A GB 5034768A GB 5034768 A GB5034768 A GB 5034768A GB 1238193 A GB1238193 A GB 1238193A
- Authority
- GB
- United Kingdom
- Prior art keywords
- trimellitic anhydride
- oct
- distillation
- chemiebau
- zieren
- 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.)
- Expired
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
- C07C51/54—Preparation of carboxylic acid anhydrides
- C07C51/573—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Furan Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19671643816 DE1643816A1 (de) | 1967-10-24 | 1967-10-24 | Verfahren zur Reinigung von Trimellithsaeureanhydrid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1238193A true GB1238193A (US06168776-20010102-C00028.png) | 1971-07-07 |
Family
ID=5684402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5034768A Expired GB1238193A (US06168776-20010102-C00028.png) | 1967-10-24 | 1968-10-23 |
Country Status (5)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3732257A (en) * | 1971-07-01 | 1973-05-08 | Standard Oil Co | Trimellitic acid anhydride product recovery by steam stripping crude anhydride of total solids from pseudocumene oxidation effluent and continuous fractionation of stripped product |
| CN102516212B (zh) * | 2011-12-16 | 2013-05-01 | 无锡百川化工股份有限公司 | 一种降低偏苯三酸酐中杂质含量的方法 |
-
1967
- 1967-10-24 DE DE19671643816 patent/DE1643816A1/de active Granted
-
1968
- 1968-10-11 US US766970A patent/US3651095A/en not_active Expired - Lifetime
- 1968-10-17 FR FR170278A patent/FR1588422A/fr not_active Expired
- 1968-10-23 NL NL6815141A patent/NL6815141A/xx unknown
- 1968-10-23 GB GB5034768A patent/GB1238193A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1588422A (US06168776-20010102-C00028.png) | 1970-04-10 |
| DE1643816A1 (de) | 1971-10-21 |
| US3651095A (en) | 1972-03-21 |
| NL6815141A (US06168776-20010102-C00028.png) | 1969-04-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |