| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7851348db19297faa07ed5a450ecbbf3 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S507-925
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S507-933
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S507-922 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-608
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-145 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-14 |
| filingDate |
1987-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_436ba8f6aecd0455ae7d66f461397d4d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_213e4dc850a4b6d2ed52d810711c2585 |
| publicationDate |
1988-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0251558-A2 |
| titleOfInvention |
Clay stabilizing agent |
| abstract |
A clay stabilizing agent is made by polymerizing diallyldimethylammonium chloride with sulfur dioxide in the presence of an erythorbic acid salt as polymerization reaction rate retarder, to form a solid cationic copolymer having the structural formula:n wherein the nitrogen-to-sulfur ratio is from about 1 to about 1.4 and n is such that the molecular weight is about 1000 to about 100,000. When dissolved in an aqueous carrier fluid, the copolymer is particularly effective in preventing clay swelling and/or fines migration. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2005124097-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2004104135-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2430002-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2430002-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8881815-B2 |
| priorityDate |
1986-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |