http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-718391-A
Outgoing Links
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|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b76537ee7dd98d9ddb0f7fc61857bb7e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2229-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2207-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2010-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2010-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2010-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2207-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2229-05 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2201-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2207-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2201-083 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2215-067 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2215-065 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2215-064 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2215-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2203-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2207-022 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2070-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2050-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2207-129 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2207-125 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2207-282 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M7-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G09B23-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G09B23-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10M169-00 |
| filingDate | 1952-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_07b04535dccd3483d9c379a146cee021 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_55f0cb138a97c07f0f75bf674b23e822 |
| publicationDate | 1954-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-718391-A |
| titleOfInvention | Improvements in and relating to lubricating greases |
| abstract | Lubricating greases of high drop point are prepared by heating a mixture of a lubricating oil, an alkali metal or alkaline earth metal soap and an inorganic nitrite at a temperature above the temperature at which the mixture assumes a grease structure and thereafter cooling the mixture to produce a grease structure. Alternatively, an already-formed grease comprising lubricating oil and alkali metal or alkaline earth metal soap may be heated with the inorganic nitrite until it loses its grease structure and thereafter cooled to reproduce a grease structure. According to another alternative, the inorganic nitrite may be added to a mixture of a lubricating oil and a fat, fatty oil or fatty acid and an alkali metal or alkaline earth metal saponifying agent, heat applied to effect saponification of the fatty material, and the mixture thereafter cooled to produce a grease structure. The lubricating oil may be a mineral lubricating oil or a synthetic lubricating oil such as an ester (e.g. di-(2-ethylhexyl) sebacate) or a silicone (e.g. dimethyl silicone). Nitrites which may be employed are those of Na, K, Li, Ca, Ba, Sr or Mg. They may be added as such or in the form of solution or dispersion in a liquid medium such as water or an organic solvent. Thus, they may be added in the form of a slurry in some of the lubricating oil used in the grease. Fatty materials from which the soap may be derived are saturated or unsaturated fatty acids or substituted fatty acids (e.g. myristic, palmitic, stearic, oleic or 12-hydroxystearic acid) or mixtures thereof, animal oils and fats, vegetable oils, fats and waxes, fish oils, beeswax and degras. The metal radicle of the soap may be Na, K, Li, Ca, Ba or Sr, or the soaps employed may contain more than one metal as in the case of soda-lime greases. Where saponification is carried out in situ, the oxide or hydroxide of the metal may be employed as saponifying agent, and the nitrite may be added before, during or after saponification. The grease compositions may contain additional ingredients such as pour-point depressants, viscosity index improvers, anti-oxidants, anti-corrosion agents and extreme pressure agents. Suitable anti-oxidants are phenyl alpha- or beta-naphthylamine, benzyl phenyl naphthylamine di (p-aminophenyl) phenyl methane, and p, p1- (N, N1-tetramethyl) diamino phenyl methane. In the examples, the preparations are described of greases consisting of the following ingredients:-(a) mineral lubricating oil, sodium stearate, 12-hydroxy stearate, palmitate or myristate, and sodium nitrite, (b) mineral lubricating oil, calcium stearate and calcium nitrite, (c) mineral lubricating oil, lithium 12-hydroxy stearate and lithium nitrite, (d) mineral lubricating oil, lithium soap of hydrogenated castor oil, sodium nitrite and phenyl beta-naphthylamine and (e) dioctyl sebacate, lithium stearate and lithium nitrite. According to the Provisional Specification, the soap employed in the lubricating grease may be an aluminium, zinc or lead soap. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-1059600-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-1040729-B |
| priorityDate | 1952-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 93.