http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-601226-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d66aced64b418a4f422589fa7eee73a2 |
| filingDate | 1944-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1948-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-601226-A |
| titleOfInvention | Improvements in or relating to the manufacture of polymeric materials and the employment thereof |
| abstract | Hydrocarbon copolymers are prepared by copolymerizing an aromatic monoolefin and an aliphatic monoolefin the aromatic monoolefin comprising from 50 to 80 per cent by weight of the mixed olefins, in the presence of a Friedel-Crafts catalyst at a temperature below -70 DEG C. Specified aromatic olefins are styrene and its homologues, indene and terpene and specified aliphatic olefins are isobutylene and isopentene. The copolymerization is preferably carried out at between -70 DEG and -105 DEG C. in the presence of methyl or ethyl chloride as a solvent and/or diluent. The catalyst may be boron fluoride, aluminium chloride, aluminium bromide or titanium chloride preferably in solution in methyl or ethyl chloride. The resulting copolymers have an intrinsic viscosity greater than 0.6 and are all soluble in aromatic solvents and insoluble in aliphatic solvents. Specified aromatic solvents are benzene, toluene, xylene, isopropyl benzene, tetrahydronaphthalene, dihydronaphthalene, dihydrobenzene, chlorbenzene, 6-bromo-toluene and 1,4-dihydroxy naphthalene. These solutions are particularly useful for forming protective films on such surfaces as metal, wood, paper and cloth, while self-supporting films may be produced by stripping off the film-a stripping aid such as polysilicone may be used. Specification 513,521 is referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2789933-A |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.