US 6,664,209 B1 · Solid catalyst component for propylene polymerization and catalyst

Abstract

The present invention provides catalyst for polymerization of a propylene prepared from by using a solid catalyst component for polymerization of a propylene which is prepared by subjecting a dialkoxymagnesium (a), a tatravalent halogen-containing titanium compound (b), and a diester of maleic acid (c) each having a straight-chain or branched chain alkyl group having a carbon number of 2 to 8 into contact with one another by suspending the foregoing components in an aromatic hydrocarbon which melting point is 50 to 150° C. (d), an organic aluminum compound represented by the general formula:R1pAlQ3−p, and an organic silicon compound represented by the general formula R2qSi(OR3)4−q. By using the catalyst for a polymerization of a propylene, an excellent hydrogen response can be shown and a polymer having a high stereoregularity can be obtained in a high yield.

Claims14

Dependent claims

A solid catalyst component, which can be used for polymerization of a propylene, the solid catalyst component being prepared by

suspending a dialkoxymagnesium (a) in an aromatic hydrocarbon (d) to make a suspension, where the dialkoxymagnesium (a) contains two alkoxy groups each independently having from 1 to 6 carbon atoms, and
then contacting a tetravalent halogen-containing titanium compound (b) with the suspension, and
then carrying out a reaction process, wherein
before or after the tetravalent halogen-containing titanium compound (b) is contacted with the suspension, one or more species of diesters of maleic acid each having a straight-chain or branched chain alkyl group having a carbon number of 2 to 8 (c) is contacted with the suspension.

1 more element

Dependencies are inferred from the claim text.

Solid catalyst component for propylene polymerization and catalyst

Life of this patent

Solid catalyst component for propylene polymerization and catalyst

Life of this patent

Abstract

Claims14