| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8857d9285f4a393618523d052bf765df |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-44 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F6-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10M175-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C-
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C301-00 |
| filingDate |
1976-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
1978-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-1530664-A |
| titleOfInvention |
Process for purifying sulphonic acids |
| abstract |
1530664 Purifying sulphonic acids STANDARD OIL CO 26 March 1976 [28 March 1975 1 March 1976] 12267/76 Heading C3L Crude products obtained by the sulphonation of hydrocarbons, e.g. condensates of aromatics with alkene polymers to be used as lubricant additives, are purified by contacting a solution of the acid in an inert hydrocarbon with water, separating the water phase and adding calcium carbonate to the hydrocarbon phase whereby free sulphuric acid is removed as insoluble calcium sulphate. |
| priorityDate |
1975-03-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |