GB1242483A - Process for the manufacture of sorbic acid - Google Patents
Process for the manufacture of sorbic acidInfo
- Publication number
- GB1242483A GB1242483A GB4449869A GB4449869A GB1242483A GB 1242483 A GB1242483 A GB 1242483A GB 4449869 A GB4449869 A GB 4449869A GB 4449869 A GB4449869 A GB 4449869A GB 1242483 A GB1242483 A GB 1242483A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sorbic acid
- manufacture
- crotonaldehyde
- sept
- acid
- 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
- C07C51/09—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid esters or lactones
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Paper (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
1,242,483. Sorbic acid. WACKER-CHEMIE G.m.b.H. 9 Sept., 1969 [18 Sept., 1968], No. 44498/69. Addition to 1,129,574. Heading C2C. Sorbic acid is prepared by reacting ketene with crotonaldehyde in the presence of tetraalkyl titanate (2-18 C) or a condensation product thereof as catalyst at a temperature below 70‹ C., preferably 35-40‹ C., and treating the resulting polyester with at least 20À2% aqueous hydrochloric acid at 50-100‹ C. The crotonaldehyde may be stabilized e.g. by 2,6-ditertbutyl-p-cresol.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681793441 DE1793441A1 (en) | 1968-09-18 | 1968-09-18 | Process for the production of sorbic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1242483A true GB1242483A (en) | 1971-08-11 |
Family
ID=5707707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4449869A Expired GB1242483A (en) | 1968-09-18 | 1969-09-09 | Process for the manufacture of sorbic acid |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE738871A (en) |
| DE (1) | DE1793441A1 (en) |
| FR (1) | FR2023312A6 (en) |
| GB (1) | GB1242483A (en) |
| NL (1) | NL6913105A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111377811A (en) * | 2018-12-30 | 2020-07-07 | 南通醋酸化工股份有限公司 | Continuous preparation method of sorbic acid |
| CN112876347A (en) * | 2019-11-29 | 2021-06-01 | 南通醋酸化工股份有限公司 | Method for continuously hydrolyzing polyester in sorbic acid preparation in multiple stages |
-
1968
- 1968-09-18 DE DE19681793441 patent/DE1793441A1/en active Granted
-
1969
- 1969-08-27 NL NL6913105A patent/NL6913105A/xx unknown
- 1969-09-09 GB GB4449869A patent/GB1242483A/en not_active Expired
- 1969-09-15 BE BE738871D patent/BE738871A/xx unknown
- 1969-09-17 FR FR6931560A patent/FR2023312A6/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111377811A (en) * | 2018-12-30 | 2020-07-07 | 南通醋酸化工股份有限公司 | Continuous preparation method of sorbic acid |
| CN112876347A (en) * | 2019-11-29 | 2021-06-01 | 南通醋酸化工股份有限公司 | Method for continuously hydrolyzing polyester in sorbic acid preparation in multiple stages |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1793441C3 (en) | 1974-07-18 |
| FR2023312A6 (en) | 1970-08-21 |
| DE1793441A1 (en) | 1972-04-27 |
| NL6913105A (en) | 1970-03-20 |
| DE1793441B2 (en) | 1973-12-13 |
| BE738871A (en) | 1970-03-16 |
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