http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1256710-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C309-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D1-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-20 |
| filingDate | 1968-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1971-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1256710-A |
| abstract | 1,256,710. Neutralizing sulphonated olefins and sulphated alcohols. R. J. BROOKS, and B. BROOKS. 13 Dec., 1968 [29 April, 1968], No. 59492/68. Heading C2C. A continuous process for the production of detergent α-olefin sulphonates or unsaturated alcohol sulphates comprises (1) continuously sulphonating an α-olefin, especially a C 12 -C 20 α-olefin, or sulphating an unsaturated alcohol having at least 10 carbon atoms, in a single stage by contacting a thin flowing film thereof, e.g. at 90‹ to 120‹ F., with a mixture of sulphur trioxide and air, subject to the proviso that when an α-olefin is sulphonated the molar ratio of SO 3 to α-olefin is from 1À10:1 to 1À25:1 and (2) continuously heating the sulphonated or sulphated product with a neutralizing agent, e.g. NaOH or KOH, the heating being carried out in the case of the α-olefin sulphonated product either in two stages, viz. 110-130‹ F. and 190-310‹ F. respectively or in a single stage at 180-240‹ F. and in the case of the unsaturated alcohol sulphated product at 200-220‹ F. The sulphonation product is preferably digested for 1 to 5 minutes before the neutralization step, the digestion assisting in the elimination of the hydroxy sulphonates probably through rearrangement of the sultone also formed in the sulphonation. The neutralizing agent is preferably used in a molar ratio of 1À02 to 1À05 mols. per mol. of sulphonic acid groups. The neutralized sulphonated olefin is generally finally hydrolysed under alkaline conditions, e.g. at 190-310‹ F., to decompose the sultone present and after hydrolysis a suitable sulphonic acid or sulphuric acid may be added to the sulphonate to adjust the pH to a value, e.g. pH 6 to 10, useful in detergent formulations. A flow diagram is given and the process is exemplified by the sulphonation of a C 15 -C 18 α-olefin mixture and subsequent neutralization and hydrolysis with NaOH and by the sulphation of sperm alcohol and neutralization of the product. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4379834-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2146323-A |
| priorityDate | 1968-04-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.