Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1978-09-28
1980-10-07
Smith, Edward J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
252431R, 526308, 5263484, 5263485, C08F 466, C08F 1014
Patent
active
042269652
ABSTRACT:
Polymerization or copolymerization of the starting monomers is carried out in a hydrocarbon medium in the presence of a catalyst containing an alkylaluminium chloride compound, a trialkylvanadate and an alkoxyderivative of titanium, or zirconium, or hafnium. The method of the present invention makes it possible to considerably increase the polymerization rate and degree of conversion in the preparation of polymers and copolymers of higher .alpha.-olefines. The resulting polymers of higher .alpha.-olefines have a stereoregular structure with a high degree of crystallinity which is manifested in an increased melting point of the resulting polymer.
REFERENCES:
patent: 2936302 (1960-05-01), Jones et al.
patent: 3567653 (1971-03-01), Wagensommer et al.
Arkhipova Zinaida V.
Bakajutov Nikolai G.
Balaev Gurgen A.
Grigoriev Vasily A.
Polyakov Arkady V.
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