http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-662626-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0235f5aeeff44e5b1733138b721f5c06 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-02 |
| filingDate | 1949-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1951-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-662626-A |
| titleOfInvention | Improvements in interpolymers |
| abstract | Soluble, convertible ternary interpolymers are obtained by heating (a) 6 to 120 mols. of a cyclic terpene hydrocarbon, (b) 1 mol. of an ester of castor oil and maleic acid or its homologues, and (c) 0.5 to 20 mols. of another copolymerizable mono-olefinic compound, at a temperature of 25-120 DEG C., in the presence of a catalyst. Specified terpenes are the methenes, terpinenes, limonene, dipentene, a -pinene and mixtures thereof, particularly turpentine. Suitable mono-olefinic compounds are styrene, p-chlorostyrene, p-methylstyrene, a ,p-dimethylstyrene, p - fluorostyrene, p - trichloromethylstyrene, p - methoxystyrene, 2,5 - dichlorostyrene, vinyl naphthalene, ethylene, propylene, isobutylene, vinyl acetate, butyrate and benzoate, vinyl ethyl, propyl and benzyl ethers, methyl, n-butyl and tolyl acrylates, methyl methacrylate, ethyl chloroacrylate, methyl crotonate, the mono-olefinic acids themselves, and their chlorides, amides and nitriles. The castor oil ester is generally prepared from 1 mol. of castor oil per mol. of maleic anhydride, which latter may be replaced partly or wholly by citraconic acid or anhydride. Modifying agents such as linseed oil may be present in the preparation of the ester. Suitable polymerization catalysts are benzoyl and acetyl peroxides and tert.-butyl hydroperoxide. The reaction is continued to the point of incipient gelation and the interpolymer is isolated by evaporation of the terpene or by precipitation through the addition of a non-solvent, e.g. methanol. The products may be dissolved in, for example, acetone, xylene and butanol, and employed as coating, laminating and impregnating compositions, alone or with other resins, such as ureaformaldehyde resins. On heating, the compositions are converted to an insoluble and infusible state. |
| priorityDate | 1949-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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