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. 04, 2017
Filed:
Apr. 09, 2014
Process of producing polyolefins using metallocene polymerization catalysts and copolymers therefrom
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Ian C. Stewart, Houston, TX (US);
Steven D. Brown, League City, TX (US);
Crisita Carmen H. Atienza, Houston, TX (US);
David T. Harris, Houston, TX (US);
Aaron M. Hollas, Irvine, CA (US);
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Abstract
An ethylene copolymer, a Group 4 transition metal catalyst compound, and methods for polymerization using such a compound, said compound represented by the formula: (L)(R')T(Cp)(A)MX, where M is a Group 4 metal; z is 0 to 8; p is 1 to 3; X is an anionic leaving group; T is a bridging group; Rto Rare hydrogen, a hydrocarbyl group, a substituted hydrocarbyl group, aryl group, substituted aryl group, or a heteroatom-containing group (where adjacent R groups can form rings); R′ is hydrogen, a Cto Calkyl group, a Cto Caryl group, or a Cto Calkylaryl group; and L is a heteroatom or heteroatom-containing group bound to T, Cp is a cyclopentadienyl ring substituted with 0 to 4 substituent groups (where adjacent groups can form Cto Crings); A is Cp or (JS′), where J is a Group 15 or 16 element; S′ is a hydrocarbyl, substituted hydrocarbyl, or heteroatom; z* is 2 or 3, and y is 0 or 1, is provided.