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:
Aug. 06, 2002
Filed:
Apr. 26, 2001
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A thermoplastic elastomer composition comprising 100 parts by weight of a polyolefin resin, 5 to 250 parts by weight of a rubbery polymer and 0 to 500 parts by weight of an ethylene-&agr;-olefin copolymer rubber, wherein a complex dynamic viscosity &eegr;*(1) at 250° C. is 1.5×10 poise or less and a Newtonian viscosity index n is 0.67 or less, and furthermore, wherein said thermoplastic elastomer composition has a specific tan &dgr; peak, the peak temperature of which is different from that of the polyolefin resin and that of the rubbery polymer, at a temperature within the range from −70 to 30° C. in a temperature dependence curve of tan &dgr; determined by solid dynamic viscoelasticity measurement, powder or pellet thereof, and a molded article thereof.