GB1214714A - Process for preparing monosodium alpha-sulphocarboxylic acids - Google Patents
Process for preparing monosodium alpha-sulphocarboxylic acidsInfo
- Publication number
- GB1214714A GB1214714A GB2021968A GB2021968A GB1214714A GB 1214714 A GB1214714 A GB 1214714A GB 2021968 A GB2021968 A GB 2021968A GB 2021968 A GB2021968 A GB 2021968A GB 1214714 A GB1214714 A GB 1214714A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- alpha
- acid
- acids
- 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
- C07C303/32—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of salts of sulfonic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,214,714. Alpha-sulpho fatty acids. PROCTER & GAMBLE Ltd. 28 April, 1969 [29 April, 1968], No. 20219/68. Heading C2C. [Also in Division C5] Monosodium C 10-22 fatty alpha-sulpho carboxylic acids are obtained by a process comprising: (a) mixing solutions (in a substantially inert solvent) of sulphur trioxide and appropriate fatty acid such that the sulphur trioxide is in molar excess; (b) maintaining the mixture at a temperature up to the boiling point of the mixture for a time sufficient for substantially complete reaction; (c) thereafter partially neutralizing the mixture by mixing it with an aqueous solution of caustic soda, the concentration of the caustic soda solution and the temperature during the neutralization being such that any disodium alpha-sulphocarboxylate formed during neutralization is not precipitated and ensuring that the final pH of the solution is in the range 2À5 to 4À5; (d) separating the solvent from the neutralized solution; (e) cooling the thus concentrated mixture to precipitate the crystalline monosodium compound; and (f) separating the precipitated crystals and washing these with water. A fatty acid of which at least 90% by weight is stearic or palmitic acid or a mixture thereof, e.g. commercial stearic acid or acids from hardened tallow, may be especially utilized in the process. The sulphonation of stearic acid affords a product comprising the corresponding monosodium alphasulpho-carboxylic acid and a small amount of disodium alpha - sulphocarboxylate, residual moisture, stearic acid and volatile matter.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2021968A GB1214714A (en) | 1968-04-29 | 1968-04-29 | Process for preparing monosodium alpha-sulphocarboxylic acids |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2021968A GB1214714A (en) | 1968-04-29 | 1968-04-29 | Process for preparing monosodium alpha-sulphocarboxylic acids |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1214714A true GB1214714A (en) | 1970-12-02 |
Family
ID=10142363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2021968A Expired GB1214714A (en) | 1968-04-29 | 1968-04-29 | Process for preparing monosodium alpha-sulphocarboxylic acids |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1214714A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993015170A1 (en) * | 1992-02-03 | 1993-08-05 | Henkel Kommanditgesellschaft Auf Aktien | METHOD OF PRODUCING PALE-COLOURED, COLOUR-STABLE ALKALI-METAL SALTS OF WASHING-ACTIVE α-SULPHONIC FATTY ACIDS |
WO1994001397A1 (en) * | 1992-07-06 | 1994-01-20 | Henkel Kommanditgesellschaft Auf Aktien | METHOD OF MANUFACTURING CONCENTRATED PASTES OF SALTS OF α-SULPHONIC FATTY ACIDS |
WO2023099283A1 (en) | 2021-12-01 | 2023-06-08 | Basf Se | Purification method for alpha-sulfo fatty acid salt |
-
1968
- 1968-04-29 GB GB2021968A patent/GB1214714A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993015170A1 (en) * | 1992-02-03 | 1993-08-05 | Henkel Kommanditgesellschaft Auf Aktien | METHOD OF PRODUCING PALE-COLOURED, COLOUR-STABLE ALKALI-METAL SALTS OF WASHING-ACTIVE α-SULPHONIC FATTY ACIDS |
WO1994001397A1 (en) * | 1992-07-06 | 1994-01-20 | Henkel Kommanditgesellschaft Auf Aktien | METHOD OF MANUFACTURING CONCENTRATED PASTES OF SALTS OF α-SULPHONIC FATTY ACIDS |
WO2023099283A1 (en) | 2021-12-01 | 2023-06-08 | Basf Se | Purification method for alpha-sulfo fatty acid salt |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |