http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1044691-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_02952b53249649e8f35d68904f49ad0b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C309-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C309-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G8-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J10-00 |
| filingDate | 1965-01-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1966-10-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1044691-A |
| titleOfInvention | Sulphonation of olefins |
| abstract | In a process for the preparation of light-coloured olefine sulphonation products or the corresponding sulphonates by reacting mono-olefines containing 8 to 22 carbon atoms with gaseous sulphur trioxide diluted with inert gas and hydrolysing and optionally neutralising the sulphonation products, the sulphonation is carried out in two stages, sulphonation being effected in the first stage at temperatures of 0 DEG to 50 DEG C. and a concentration of SO3 in the SO3-containing inert gas of 0.5 to 10% by volume until the ratio of the amount of sulphur dioxide evolved and the amount of sulphur trioxide absorbed at the same time by the starting material amounts to at least 1.5 times and at most 2.5 times that of the ratio which is determined for the time when the absorption of 0.5 mol of sulphur trioxide per mol of olefine has taken place, and the sulphonation is then continued in a second stage until the olefines present in the starting material are sulphonated to at least 90%, the operation of the second stage being at reduced temperatures of -10 DEG to +40 DEG C., a concentration of SO3 of not more than 80% of that used in the first stage and a speed of feed of the sulphur trioxide increased by at least 20% over the first stage. Acid or alkaline hydrolysis may be used. The product contains hydroxyalkanesulphonates and alkenesulphonates and the proportion of the latter can be increased by hydrolysing with acid under pressure. The olefines may first be treated with adsorption agents. |
| priorityDate | 1964-03-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 20.