| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_461e1cafc2023eb58eb915338586736f |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-06 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-62 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-06 |
| filingDate |
1988-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1989-07-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_37d7968ddc3df422525635209c0b4a73
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3787a82b5297d9424e5206a51cac09ef
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_18a05cc974abfaf64885c226f38fca83 |
| publicationDate |
1989-07-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4847018-A |
| titleOfInvention |
Process for producing petroleum sulfonates |
| abstract |
A petroleum sulfonate is prepared by (a) separately sulfonating each of two or more different petroleum fractions boiling substantially above 700 DEG F. by contact with sulfur trioxide under reaction conditions wherein the ratio of milliliters of sulfur trioxide to grams of aromatic components is adjusted so as to produce from each separate fraction a reaction product capable of producing upon neutralization a sulfonate having a sulfonate requirement in microemulsion below about 20 grams per 100 milliliters of microemulsion; (b) separately neutralizing the sulfonated fractions; and (c) blending the hydrocarbon sulfonates produced from two or more of the fractions in proportions sufficient to yield a product petroleum sulfonate blend useful for enhanced oil recovery. In one embodiment four different petroleum fractions are separately sulfonated using different ratios of sulfur trioxide to aromatic content for each fraction and the sulfonated fractions are blended in a weight ratio between 0:1:1:0 and 1:10:10:1 to yield a sulfonate blend useful for enhanced oil recovery. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EA-015421-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005284798-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2010021858-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7658838-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8524965-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7594989-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005279673-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005279672-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7732387-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005269247-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005263440-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005258075-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7727382-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005258071-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005258070-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7645375-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101365675-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7704376-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101365675-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006021907-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006183950-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2007075404-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007142686-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5459136-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7537686-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7794586-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114539102-A |
| priorityDate |
1986-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |