http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-914566-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e17ac3e790b960c8a589610fa3d767e6 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C309-00 |
| filingDate | 1960-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1963-01-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-914566-A |
| titleOfInvention | Process of preparing fatty acid esters of hydroxyalkane sulphonic acids |
| abstract | Fatty acid esters of hydroxyalkane sulphonic acids are prepared by heating a hydroxyalkane sulphonic acid, which may be halogen-substituted, or a mixture of such acid and not more than 50% by weight of its sulphonate salt, with a fatty acid and forming the fatty acid ester of the hydroxyalkane sulphonic acid at a temperature of 100-150 DEG C. while simultaneously removing the water of reaction. The product may be subsequently neutralised by a batchwise or continuous process to give the alkali metal, ammonium or amine, especially mono-, di- or tri-ethanolamine, salts. The water may be removed by azeotropic distillation or by heating to 100 DEG -150 DEG C. under reduced pressure. Reagents specified include dihydroxypropane sulphonic acid, 2-hydroxybutane-3-sulphonic acid, 2-hydroxybutane-1-sulphonic acid and fatty acids having 8-22 carbon atoms, for example those derived from hydrogenated natural fats such as coconut oil, palm kernel oil and tallow. The iodine value of unsaturated acids is preferably not greater than 8 and more preferably is less than 4. The free hydroxy-alkane sulphonic acids may be prepared from a concentrated solution of their sodium or potassium salts by treatment with ionexchangers. The esterification may be performed batchwise or as a continuous process using a thin film of reactants. In examples: (1) isethionic acid and lauric acid are reacted together and the product kneaded with triethanolamine; (2) lauric acid and hydroxypropane sulphonic acid containing about 10% of its sodium salt are dissolved in some preformed reaction product, the resultant product being neutralised with ammonia; (3) 1-chloro-2-hydroxypropane sulphonic acid containing about 8% of its sodium salt is reacted with a 10% excess of myristic acid and the product kneaded with concentrated sodium carbonate solution; (4) isethionic acid containing 5%-10% of its sodium salt and a fatty acid mixture derived from hydrogenated coconut oil are dissolved in some pre-formed estersulphonic acid and the reaction product is neutralised with a mixture of sodium hydroxide and sodium disilicate solutions or with sodium disilicate solution alone. The products are wetting, washing and penetrating agents. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-1072643-C |
| priorityDate | 1959-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.