| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_50907fc1b392e2bf592f74fb8123032d |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2217-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2070-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2060-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2040-25
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2207-262
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2209-084
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2020-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2030-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2030-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2205-024
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2030-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2030-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2030-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2205-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2205-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2203-1025 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M161-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10M149-10 |
| filingDate |
1997-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2000-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_35c24f21acc2ff1ab2b84d4393c90446 |
| publicationDate |
2000-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6083888-A |
| titleOfInvention |
Dispersant viscosity index improvers |
| abstract |
A lubricating oil composition comprising: (a) from 0.01 to 10 percent by weight of a dispersant viscosity index improver linear diblock copolymer or a radial or star copolymer with each arm having an overall number average molecular weight of 7500 to 250,000 and comprising a block of a conjugated diene having a number average molecular weight of 5000 to 200,000 and a block of a vinyl aromatic hydrocarbon having a number average molecular weight of 2500 to 100,000, and a vinyl aromatic hydrocarbon content of 5 to 50 weight percent, wherein from 5 to 10 N-vinyl imidazole functional groups per molecule have been grafted onto the copolymer; (b) from 5 to 20 percent by weight of a dispersant inhibitor package containing 40 percent by weight less ashless dispersant than is required for use with a non-dispersant viscosity index improver; and (c) from 80 to 95 percent by weight of a base oil. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2002147118-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6303550-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1783198-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1783198-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6369162-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006052255-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007099802-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7034079-B2 |
| priorityDate |
1997-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |