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:
Feb. 12, 2008
Filed:
Jan. 18, 2007
Nan-young Lee, Seoul, KR;
Churl-young Park, Daejeon, KR;
Jin-woo Lee, Daejeon, KR;
Yi-young Choi, Daejeon, KR;
So-young Park, Seoul, KR;
Nan-young Lee, Seoul, KR;
Churl-young Park, Daejeon, KR;
Jin-woo Lee, Daejeon, KR;
Yi-young Choi, Daejeon, KR;
So-young Park, Seoul, KR;
LG Chem, Ltd., , KR;
Abstract
The present invention relates to a method of polymerizing olefin containing the step of pre-polymerization. More precisely, according to the method of the present invention, the reaction speed and temperature are regulated for pre-polymerization of a catalyst and then the pre-polymerized catalyst is added for the polymerization of propylene. Propylene having an improved molecular weight distribution, hydrogen reactivity and tacticity is produced.