| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e2ea8919ae1840f418f59f60e2531123 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S507-936 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-584 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-58 |
| filingDate |
1974-10-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1976-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8ad3504a9a8cd14d3fdb54f6208e0c41
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0cdb359604160653c170e176b4f88ed8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_91085c2b8e46798bcc68c10b37662d30 |
| publicationDate |
1976-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3933201-A |
| titleOfInvention |
Method using overbased branched-chain alkylaromatic sulfonates as waterflood additives |
| abstract |
An improved anionic waterflood additive is prepared by alkylating an aromatic hydrocarbon such as benzene with a branched-chain alkene having about 10 to about 35 carbon atoms such as a propylene tetramer dimerization reaction product in the presence of an alkylation catalyst such as AlCl3; sulfonating the thus formed alkylate product or a fraction thereof to form a sulfonic acid; converting the sulfonic acid to a sulfonate by reacting with a base component such as an alkali metal hydroxide, ammonium hydroxide, or an alkali metal carbonate; and overbasing the sulfonate by admixing with an excess of base component such that the ratio; "weight of excess base component/weight of sulfonate" is about 0.03 to about 3.0. The anionic waterflood additive is injected into a petroliferous formation, the formation is waterflooded, and oil is recovered. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010048432-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6269881-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4530400-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005199395-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4769161-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4058467-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4414119-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4873025-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4743385-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4440650-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5000262-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5273682-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4192755-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0111354-A1 |
| priorityDate |
1973-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |