Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1997-06-04
2000-05-16
Wu, David W.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502126, 526128, B01J 3100
Patent
active
060637277
ABSTRACT:
Disclosed are a catalyst for polymerizing olefins containing a solid catalyst component containing titanium, magnesium and halogen as essential components (component (A)); an organic aluminum compound (component (B)); and a silane compound (component (C)) represented by general formula (1) ##STR1## wherein R.sup.1 and R.sup.2 independently represent a straight, branched or cyclic saturated aliphatic hydrocarbon group or a silyl group, a method of preparing polyolefins using the catalyst as well as novel trimethoxysilane compounds represented by the general formula (1) in which R.sup.1 is a straight saturated aliphatic hydrocarbon group having 2 to 10 carbon atoms, and R.sup.2 represents a methyl group. Use of the catalyst enables efficient production of polyolefins having a low molecular weight (MFR>20 (g/10 minutes)), a broad molecular weight distribution (MLMFR/MFR>22) and a high stereoregularity when applied to polymerization of olefins having 3 or more carbon atoms.
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patent: 5476825 (1995-12-01), Fushimi et al.
Brewita, Organic Chemistry, Prentice-Hall, hr. N.Y, 1948, pp. 34-35.
Fujita Toshio
Fushimi Masaki
Inazawa Shintaro
Choi Ling-Siu
Japan Polyolefins Co., Ltd.
Wu David W.
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