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:
May. 28, 2002
Filed:
Jun. 13, 2001
Jan F. van Baar, Uitgeest, NL;
Peter A. Schut, Almere, NL;
Andrew D. Horton, Amsterdam, NL;
Tiziano Dall'Occo, Ferrara, IT;
Basell Technology Company BV, , NL;
Abstract
It is disclosed a new catalyst system for the polymerization of olefins comprising the product obtainable by contacting the following components: (A) one or more compounds of a late transition metal belonging to Group 8-11 of the Periodic Table; and (B) the reaction product of water with one or more organometallic aluminum compounds of formula (IV): Al(CH —CR R R ) R H , wherein R is a C -C alkyl, C -C cycloalkyl or C -C alkylaryl radical; R is different from a straight alkyl and is a C -C alkyl, C -C cycloalkyl, C -C aryl, C -C alkylaryl or C -C arylalkyl radical; or R and R form together a C -C ring; R is hydrogen or a C -C alkyl, C -C aryl, C -C alkylaryl or arylalkyl radical; R is a C -C alkyl, C -C cycloalkyl, C -C aryl, C -C alkylaryl or C -C arylalkyl radical; x is 1-3; z is 0-1; and y is 3−x−z; the molar ratio between said organometallic aluminum compound and water being comprised between 0.5:1 and 100:1.