Improved propylene random copolymer, process for its preparation and its use

China Patent

PATENT NO 1089769
APP PUB NO CN-1158860-A
SERIAL NO

96117277

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Abstract

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A composition containing C2-C10Random propylene copolymers of copolymerized units of alpha-olefins, obtainable from propylene and C2-C10Alpha-olefins are obtained by polymerization in the presence of a Ziegler-Natta catalyst system comprising a titanium-containing solid component a), and as cocatalyst an aluminium compound b) and an electron donor compound c), the support used in the titanium-containing solid component being a silica gel having an average particle size of from 5 to 200 μm, an average primary particle size of from 1 to 10 μm and having voids or channels having an average diameter of from 1 to 10 μm, the voids or channels having a macroscopic proportion by volume, based on the entire particle, of from 5% to 20%.

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Patent Owner(s)

Patent OwnerAddress
NOVOLEN TECHNOLOGY HOLDINGS C VNLOOSTDUINLAAN 75 2596 JJ THE HAGUE

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Inventor(s)

Inventor Name Address
J COX -
HUEFFER S NL
KERSTING M NL
LANGHAUSER F NL
R A WARNER -
P MILLER -

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