http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1287830-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8ecde1ecf07aafa1757e8356ff7ce4b3 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F02B1-04 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M159-22 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10N40-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10N30-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10N30-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10N40-25 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F02B1-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10N70-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10M159-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10M159-20 |
| filingDate | 1986-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1991-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d7915ae8723ada29310727b763527d30 |
| publicationDate | 1991-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1287830-C |
| titleOfInvention | Superalkalinized hydrolysis-resistant detergent or dispersant additives for lubricating oils, and process for their preparation |
| abstract | PRECISION OF DISCLOSURE . The invention relates to detergent additives overbased persants for lubricating oils, characterized in that they are obtained by neutralization of an alkylphenol using an alkaline earth base in the presence of an alcohol "vector" and a third solvent forming an azeotrope with the reaction water, said neutralization operation being carried out at a temperature at least equal to that of forma-tion of the azeotrope, (alkaline earth base / alkylphenol = 0.5 to 2 and "carrier" alcohol / alkylphenol = 0.05 to 3); distill-lation under nitrogen sweep of the reaction medium obtained until complete elimination of the "carrier" alcohol and the azeotrope; carboxylation of the alkylphenate formed into alkylsa-licylate using carbon dioxide at a temperature of 100 at 185 ° C at a pressure of at least 5 bar for at least 3 hours in the presence of a dilution oil or a solvent aromatic, the amount of CO2 corresponding to that required to obtain a conversion rate expressed in acids from alkylphenate to alkylsalicylate of between approximately 5 and 30%; or sulfurization-over-alkalization of the mixture alkylphenate-alkylsalicylate obtained by elemental sulfur in the presence of an alkaline earth base, an alkylene glycol and a third solvent at a temperature of the order of 140 to 230 ° C, (sulfur / starting alkylphenol = 0.7 to 1.5, base total alkaline earth / starting alkylphenol? 1.7 and base alkaline earth overkalinization / alkylene glycol = 1 to 1.6); or a sulfurization of the alkylphenate- mixture alkylsalicylate obtained by elemental sulfur in the presence of an alkali hydroxide as a catalyst at a temperature between 140 and 230 ° C, and a third solvent forming an azeotrope with sulfur / alkylphenol reaction water starting = 0.7 to 1.5, alkali hydroxide / alkylphenol de-part 0.01 to 0.03) and over-alkalinization of the mixture sulfurized alkylphenate-sulfurized alkylsalicylate by addi-tion of an alkaline earth base at a temperature of 50 at 80 ° C in the presence of an alkylene glycol and a third sol-before forming an azeotrope with the reaction water (base total alkaline earth / starting alkylphenol? 1.7 and alkaline earth base of overbasing / alkylene glycol = from 1 to 1.6); then carbonation of the medium obtained by gas carbonic at a temperature of 100-185 ° C and under a pressure ion near atmospheric pressure, the quantity of CO2 used being between that which can be supplemented highly absorbed by the reaction medium and an excess of 30 of this amount; possible hydrolysis, then elimination by distillation of the alkylene glycol and of the third solvent after addition of dilution oil; and filtration for remove sediment. |
| priorityDate | 1985-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 61.