http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-655011-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d66aced64b418a4f422589fa7eee73a2 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2040-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2215-065 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/C10M2207-122 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2207-121 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2010-02 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M5-00 |
| filingDate | 1948-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1951-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-655011-A |
| titleOfInvention | Lubricating grease |
| abstract | A liquid or semi-fluid lubricating composition, which acquires a grease-like consistency on mechanical working, comprises mineral lubricating oil and from 8 to 35 per cent, based on the total composition, of a mixture of alkali metal soaps of one or more fatty acids having 12-22 carbon atoms in the molecule and alkali metal salts of one or more carboxylic acids having 2-4 carbon atoms in the molecule. The composition may also contain an anti-oxidant such as phenyl alpha- or beta-naphthylamine. Other ingredients, which may be present, are extreme pressure compounds, oiliness agents, viscosity index improvers, tackiness agents and rust inhibitors. The carboxylic acids having 2-4 carbon atoms in the molecule may be saturated acids, such as acetic, propionic or butyric acids, or unsaturated acids, such as acrylic, methacrylic or crotonic acids, the unsaturated acids being preferred. The fatty acids having 12-22 carbon atoms in the molecule are preferably the partially hydrogenated fatty acids, especially those which are quite highly unsaturated. The saponifying agent used in the preparation of the salts or soaps may be sodium hydroxide, potassium hydroxide or a mixture of the two, although other saponifying agents producing alkali metal soaps or salts may be used at least in part. The C12-22 acids and the C2-4 acids may be saponified simultaneously after adding them to mineral oil, thereby producing the finished lubricating composition. Thus, according to one process of preparing the lubricating composition, sodium hydroxide or potassium hydroxide or a mixture of both is added to a mixture of the oil, the C12-22 acids and the C2-4 acids and the product is heated with continual stirring to at least 450 DEG F., whereupon the fine dispersion thus obtained of soaps and salts in the oil is cooled with stirring to between 200 DEG and 250 DEG F. and finally cooled without further working. In the examples, lubricating compositions are described consisting of (1) mineral lubricating oil, sodium soaps of hydrogenated menhaden oil fatty acids, sodium acrylate and phenyl alpho-naphthylamine, and (2) mineral lubricating oil, sodium and potassium soaps of hydrogenated menhaden oil fatty acids, sodium and potassium acetates and phenyl alpha-naphthylamine. For comparison purposes, a lubricating composition is described consisting of mineral lubricating oil, sodium soaps of partially hydrogenated menhaden oil fatty acids and phenyl alpha-naphthylamine. |
| priorityDate | 1947-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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