http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4020837-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b502fde933db1d6126d10bbcbddb83ea |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D1-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-44 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D1-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-17 |
| filingDate | 1990-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1bee58dc6c12790d3820cf1f57800721 |
| publicationDate | 1992-01-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-4020837-A1 |
| titleOfInvention | PROCESS FOR OBTAINING WATER-FREE ESTERSULFONATES |
| abstract | Ester sulphonates with low water content are obtd. from aq. solns. or (semi)solid aq. pastes by contacting the water-contg. ester sulphonate with a hydrophilic, water-miscible solvent, (partly) taking up the water in the solvent, and sepg. the water/solvent mixt. from the ester sulphonate. The ester sulphonate is derived from 8-22C (16-18C) (un)branched fatty acids, and is partic. a methyl ester sulphonate, esp. as Na salt. The solvent is a ketone, esp. MEK, used in ratio by vol. of aq. ester sulphonate:solvent of 1:2-10 (1:5-7). The low-water ester sulphonates are sepd. from the suspension by filtration and are dried at 30-70 deg.C and 50-1000 mbars. USE/ADVANTAGE - Salts of alpha-sulpho fatty acid esters are anionic tensides, e.g. for washing powders. The distribution of chain length of the fatty acid gp. in the low-water ester sulphonates obtd. is shifted in the direction of the longer-chain portion, improving the washing activity. 95-100% of the amt. of ester sulphonate can be obtd. in powder form, and the prods. can be used directly as powdery tenside components. |
| priorityDate | 1990-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.