The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 2009
Filed:
Sep. 07, 2004
Hideki Oshima, Ichihara, JP;
Makoto Satoh, Ichihara, JP;
Hideki Oshima, Ichihara, JP;
Makoto Satoh, Ichihara, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A process for producing a modified particle, a carrier or a catalyst component for addition polymerization, which comprises the steps of (1) contacting a compound (a) represented by the defined formula MLwith a compound (b) represented by the defined formula RTH, thereby producing a contact product, and (2) contacting the contact product with a porous particle (d) and then with a compound (c) represented by the defined formula RTH; a process for producing a pre-polymerized catalyst component or a catalyst for addition polymerization, which comprises the steps of (1) contacting the above modified particle with a transition metal compound and optionally an organoaluminum compound, thereby producing a primary catalyst, and (2) pre-polymerizing an olefin in the presence of the primary catalyst; a process for producing a catalyst for addition polymerization, which comprises the step of contacting the above catalyst component with a transition metal compound and optionally an organoaluminum compound; and a process for producing an addition polymer, which comprises the step of addition polymerizing an addition polymerizable monomer in the presence of the above catalyst.