GB965435A - A process for the preparation of detergents with improved properties - Google Patents
A process for the preparation of detergents with improved propertiesInfo
- Publication number
- GB965435A GB965435A GB4132560A GB4132560A GB965435A GB 965435 A GB965435 A GB 965435A GB 4132560 A GB4132560 A GB 4132560A GB 4132560 A GB4132560 A GB 4132560A GB 965435 A GB965435 A GB 965435A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alcoholic
- water
- layer
- cooling
- solution
- 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
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/42—Separation; Purification; Stabilisation; Use of additives
- C07C303/44—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A "crystalline fraction" (defined as alkali metal salts of sulphuric acid secondary alkyl esters in which at least 90% of the molecules have entrenched alkyl groups containing 8 to 18 carbon atoms inclusive and the sulphate group is attached to the second carbon atom of the alkyl chain) is separated from an aqueous mixture of alkali metal monoalkyl sulphates formed by sulphating olefins by adding to this mixture a monohydric aliphatic alcohol that has a boiling point exceeding 100 DEG C. and is liquid and immiscible with water at 20 DEG C., allowing the resultant mixture to settle to an aqueous layer and an alcoholic layer, separating the alcoholic layer, distilling water from the alcoholic layer to leave a substantially water-free alcoholic solution, cooling the solution to crystallise the fraction and isolating the resultant crystals. Specified alcohols are methyl isobutyl carbinol, 1-hexanol and oxo-alcohols. In the examples, methyl isobutyl carbinol is added at 60 DEG C. to a solution of sodium alkyl sulphates and, after settling, the alcoholic layer is distilled leaving 0.2% water. Acetone is added before or after cooling to help crystallisation. On cooling, the crystalline mass is filtered or centrifuged leaving the "crystalline fraction". Specification 858,500 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL246042 | 1959-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB965435A true GB965435A (en) | 1964-07-29 |
Family
ID=19752065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4132560A Expired GB965435A (en) | 1959-12-03 | 1960-12-01 | A process for the preparation of detergents with improved properties |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB965435A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2470156A1 (en) * | 1979-11-26 | 1981-05-29 | Colgate Palmolive Co | METHOD FOR DEHUILING AQUEOUS DETERGENT SOLUTIONS, IN PARTICULAR SODIUM LAURYL SULFATE AND STRIPPING COLUMN FOR USE THEREOF |
| WO1993024452A1 (en) * | 1992-05-28 | 1993-12-09 | Shell Internationale Research Maatschappij B.V. | Process for the preparation of a surfactant composition comprising a secondary alkyl sulfate |
-
1960
- 1960-12-01 GB GB4132560A patent/GB965435A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2470156A1 (en) * | 1979-11-26 | 1981-05-29 | Colgate Palmolive Co | METHOD FOR DEHUILING AQUEOUS DETERGENT SOLUTIONS, IN PARTICULAR SODIUM LAURYL SULFATE AND STRIPPING COLUMN FOR USE THEREOF |
| WO1993024452A1 (en) * | 1992-05-28 | 1993-12-09 | Shell Internationale Research Maatschappij B.V. | Process for the preparation of a surfactant composition comprising a secondary alkyl sulfate |
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