Preparation of homo- and copolymers of propene using a Ziegler-N

Details Preparation of homo- and copolymers of propene using a Ziegler-N Preparation of homo- and copolymers of propene using a Ziegler-N

1988-04-01

1989-06-27

Garvin, Patrick P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526351, 502120, C08F 464

Patent

active

048431320

ABSTRACT:
Polymers of propene are prepared using a Ziegler-Natta catalyst system consisting of (1) a titanium component which contains titanium, magnesium, chlorine and a benzenecarboxylic acid derivative on a carrier, (2) an aluminum component and (3) a silane component. The process employs a titanium component (1) which is obtained by a method in which (1.1) first a solid-phase intermediate is prepared from (I) magnesium chloride, (II) an alkanol, (III) a carrier which in turn consists of a finely divided inorganic oxide carrier material which has been pretreated with an alkylchlorosilane, (IV) titanium tetrachloride and (V) a phthalic acid derivative, in such a way that (1.1.1) first (I) is reacted with (II), (1.1.2) then the carrier (III) is introduced into the substance resulting from (1.1.1), (1.1.3) thereafter the solid-phase substance resulting from (1.1.2) is reacted with (IV) in a liquid hydrocarbon, with the proviso that (V) is also introduced in (1.1.1) or (1.1.2) or (1.1.3), the (1.2) the solid-phase substance resulting from (1.1) is extracted with titanium tetrachloride, and finally the solid-phase substance resulting from (1.2) is extracted with a liquid hydrocarbon.

REFERENCES:
patent: 4113933 (1978-09-01), Schweier et al.
patent: 4399054 (1983-08-01), Ferraris et al.
patent: 4431571 (1984-02-01), Karayannis
patent: 4467044 (1984-08-01), Band
patent: 4579919 (1986-04-01), Staiger et al.

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