| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dae64c775f32c43199adbb4389c2c9b3 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-17
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C301-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-06 |
| filingDate |
1983-03-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0b91554978c4505744e96658347f20ac
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3867562989d03d35a4900958cfadc89b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_80f881fe299e49486a982b02dd209788 |
| publicationDate |
1983-09-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-3309049-A1 |
| titleOfInvention |
METHOD FOR PRODUCING (ALPHA) -SULFO-FATTY ACID ALKYL ESTERS |
| abstract |
A process is described for the preparation of alkyl esters of alpha -sulpho-fatty acids by 1) Sulfonating at least one alkyl ester of a fatty acid with gaseous sulphur trioxide, expediently at a temperature from 40-80 DEG C using 1.0-1.8 mole(s) gaseous sulphur trioxide per mole of ester, 2) Mixing the resulting sulphonation product with a liquid containing mainly an alpha -sulpho-fatty acid ester, the amount of alpha -sulpho-fatty acid ester being such that the mixture assumes a value of 25 % by weight or less of a double-molecule SO3 addition product, and 3) Ageing the mixture obtained. The resulting alpha -sulpho-fatty acid esters are (only) pale in colour and only contain a small amount of by-products. e |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9305013-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0153036-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0178557-A1 |
| priorityDate |
1982-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |