20-05-1970 дата публикации
Номер: GB0001192069A
Принадлежит:
... 1,192,069. Olefin copolymers. ESSO RESEARCH & ENG. CO. 10 Oct., 1967, No. 57123/69. Divided out of 1,192,068. Heading C3P. Copolymers of ethylene and a C 3-10 -olefin containing at least 72 weight per cent of ethylene and having a green strength of at least 250 p.s.i. may be prepared by contacting the monomers at - 40‹ to + 150‹ C. at a pressure of 0À2 to 1000 p.s.i.g. for one minute to five hours with a catalyst comprising 0À5 to 1À0 moles of a reaction product of a vanadium oxyhalide or oxyacetylacetonate or C 1-12 hydrocarbon vanadate with C 1-12 alkyl titanate per mole of a (C 1-12 hydrocarbon) aluminium compound. The preferred -olefin is propylene, and minor proportions of non-conjugated dienes, e.g. alkylene norbornenes, alkyl norbomadienes, dicyclopentadiene, tetrahydroindene, 1,5-cyclooctadiene and 1,4-hexadiene, may also be present. The polymers may be compounded with carbon black and extender oils and vulcanized with peroxide and sulphur curing agents. Examples describe the copolymerization ...
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