| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_85cddbae4978966d87cff6fd89a73fe2 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2209-084
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2205-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2205-04 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F287-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M145-14 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10N30-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10M145-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F287-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F212-08 |
| filingDate |
2019-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_add585ae21ab34e2b25b874db435ab50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_068bbfcd9a7c449f7522a3ad2d360f9b |
| publicationDate |
2021-02-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2021027210-A1 |
| titleOfInvention |
Lubricating oil viscosity index modifying agent containing star-shaped sep copolymer and preparation method therefor |
| abstract |
Disclosed are a lubricating oil viscosity index modifying agent containing a star-shaped SEP copolymer and a preparation method therefor. The modifying agent is a star-shaped solid prepared by subjecting a terpolymer (I), a catalyst (II), a modifying monomer (III) and an auxiliary monomer (IV) to a melt polymerization method, or a solution of a star-shaped polymer composition prepared via a solution polymerization method. On the premise of not decreasing the oil detergency of OCP-type VII, the viscosity index modifying agent can improve the shear stability or low-temperature performance. |
| priorityDate |
2019-08-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |