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:
Dec. 13, 2016
Filed:
Nov. 15, 2013
Daelim Industrial Co., Ltd., Seoul, KR;
Jae Hoon Uhm, Daejeon, KR;
Sang-Deok Mun, Daejeon, KR;
Jin-Hun Ju, Daejeon, KR;
Hee-Sun Bae, Daejeon, KR;
Sah-Mun Hong, Daejeon, KR;
Byung-Keel Sohn, Daejeon, KR;
DAELIM INDUSTRIAL CO., LTD., Seoul, KR;
Abstract
A liquid random copolymer of ethylene and alpha-olefin prepared by using specific metallocene catalyst and ionic compound and a method for preparing the same are disclosed. The liquid random copolymer has high viscosity index and shear stability so that it is useful as synthetic lubricants. The liquid random copolymer of ethylene and alpha-olefin (1) comprises 60 to 40 mol % of ethylene units and 40 to 60 mol % of alpha-olefin unit having 3 to 20 carbon atoms, (2) has number average molecular weight (Mn) of 500 to 10,000 and a molecular weight distribution (Mw/Mn, Mw is the weight average molecular weight) of 3 or less measured by Gel Permeation Chromatography (GPC) (3) has Kinematic Viscosity at 100° C. of 30 to 5,000, (4) has pour point of 30 to −45° C., and (5) has Bromine Number of 0.1 or less.