http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-979329-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_47becd0bad1e8c65826be1edac09d306 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-00 |
| filingDate | 1963-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1965-01-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-979329-A |
| titleOfInvention | Olefin copolymers and process for preparing them |
| abstract | Substantially amorphous copolymers are produced by copolymerizing ethylene, a cyclo-olefin containing from 4 to 8 carbon atoms in the ring which may be substituted with an alkyl radical containing from 1 to 8 carbon atoms, and at least one a -olefin having the formula CH2=CHR in which R is an alkyl group containing from 1 to 6 carbon atoms. Specified a -olefins are:-propylene, butene-1, methyl-3-butene-1, pentene-1, methyl-4-pentene-1 and hexene-1. Specified cyclo-olefins are:-cyclobutene, cyclopentene, cyclohexene, cycloheptene, cis-cyclo-octane and 4-methyl cyclopentene-1. The catalysts used are preferably preformed and comprise vanadium compounds reacted with organo-metallic compounds of metals of Group Ia, II and IIIa of the Mendel<\>eeeff Periodic Table. Catalyst components exemplified are vanadium tetrachloride, vanadyl trichloride, vanadium triacetyl acetonate and aluminium trihexyl. A number of other suitable catalyst components are specified. The copolymerization may be effected in hydrocarbon solvents of which n-heptene and toluene are exemplified. The copolymerization reaction is terminated by the addition of methanol or methanol plus phenyl-b -naphthylamine; the copolymer then being purified by washing with hydrochloric acid and water and finally is coagulated with an acetone-methanol mixture. The copolymers may be vulcanized by mixing with sulphur, zinc oxide, phenyl-b -naphthylamine, tetramethylthiuram disulphide and mercaptobenzothiozole and heating the resultant mixture in a press. In some of the examples radio-active cyclo-olefins are used and the proportion of the cyclo-olefin in the resultant copolymer determined by radio chemical analysis. Specification 967,836 is referred to. |
| priorityDate | 1962-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.