| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e87b385eb8dc6a67e0d30e6ca4fc3247
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a3aa6fb687fd48bf29dd89ca6e9f86ea |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2040-25
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2215-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2207-026
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2207-028
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2020-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2030-45
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2223-045
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2030-43
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2030-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2030-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2219-044
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2215-064
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2010-04 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M169-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M137-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10M133-12 |
| filingDate |
2007-08-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_581b3a58d051ac4aeb786d4410ba1916 |
| publicationDate |
2008-04-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2008021901-A3 |
| titleOfInvention |
A low phosphorus lubricating oil composition having lead corrosion control |
| abstract |
The present invention provides a low phosphorus lubricating oil composition containing a mixture of zinc dithiophosphates in a certain ratio surprisingly yields improved lead corrosion. The synergistic combination of mixed zinc dithiophosphates containing a zinc primary dialkyl dithiophosphate, zinc secondary dialkyl dithiophosphate and zinc diaryl dithiophosphate in a respective ratio, based on the phosphorus content, of the zinc primary dialkyl dithiphosphate to zinc secondary dialkyl dithiophosphate from about 2:1 to about 1:2 and the ratio of the mixture of zinc primary dialkyl dithiophosphate and zinc secondary dialkyl dithiophosphate to zinc diaryl dithiophosphate from about 6:1 to about 1:1. When used in a lubricating oil composition having a total phosphorus content less than about 0.06 wt %, based on the total weight of the lubricating oil composition to lubricate internal combustion engines. The mixture of zinc dithiophosphates greatly reduces lead corrosion. |
| priorityDate |
2006-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |