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:
Jul. 22, 2014
Filed:
Dec. 20, 2013
Mitsui Chemicals, Inc., Tokyo, JP;
Prime Polymer Co., Ltd., Tokyo, JP;
Hideki Bando, Ichihara, JP;
Yasuo Satoh, Ichihara, JP;
Takashi Yukita, Chiba, JP;
Yasuyuki Harada, Ichihara, JP;
Yoshiho Sonobe, Yokohama, JP;
Yasushi Tohi, Otake, JP;
Yusuke Sekioka, Otake, JP;
Masao Suzuki, Ichihara, JP;
Daisuke Tanifuji, Takaishi, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Prime Polymer Co., Ltd., Tokyo, JP;
Abstract
According to the invention, a single or plural kinds of bridged metallocene compounds having differing cyclopentadienyl-derived groups afford macromonomers that are a source of long-chain branches and simultaneously catalyze the repolymerization of the macromonomers into olefin polymers having a large number of long-chain branches, small neck-in in the T-die extrusion, small take-up surge and superior mechanical strength. The olefin polymerization catalysts and the polymerization processes can efficiently produce the olefin polymers.