http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-698196-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d647e846645953f86e9ba89e7f5ead3d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F283-008 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D151-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D151-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F212-14 |
| filingDate | 1951-01-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1953-10-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-698196-A |
| titleOfInvention | Improvements in artificial resins and varnishes |
| abstract | A synthetic resin comprises the reaction product obtained by heating castor oil, styrene and an organic di-isocyanate. The di-isocyanates, having the formula OCN-R-NCO, include ethylene, decamethylene, hexamethylene, propylene 1,2, tetramethylene, butylene 1,3, ethylidene, cyclopentylene 1,3, cyclohecylene 1,3, 1-methyl phenylene 2,4 and diphenyl 4,41 di-isocyanates and p-isocyanato benzyl isocyanate. The castor oil and di-isocyanate may be first mixed together and heated to form a soluble resin which can be dissolved in the styrene to form a varnish, which may be converted to a solid infusible material by the addition of a vinyl polymerization catalyst and heating. Further addition of di-isocyanate may also be necessary. Before polymerizing, the varnish may be cast in moulds or used to impregnate sheets for laminations or fillers such as glass fibres, asbestos fibres, titanium dioxide, wood flour and cloth cuttings. Insoluble products may also be obtained by heating a mixture of the three ingredients in the presence of a catalyst. Specified catalysts are benzoyl, diacetyl, benzoyl acetyl and tert-butyl peroxides, tert-butyl hydroperoxide, ditertiary butyl perphthalate and 2-azo-bis-isobutyronitrile. The di-isocyanate is preferably used in the proportion of 0.1 to 2 mols. per mol. of castor oil, and the mixture is preferably degassed before polymerizing. The castor oil may be hydrogenated. The products which are generally soft and rubbery may be used for potting coils, resistors and capacitors, in printing rolls and as adhesives for rubber. U.S.A. Specification 2,358,475 is referred to. |
| priorityDate | 1950-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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