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:
Jan. 13, 2015
Filed:
May. 23, 2008
Nobuhiro Miwa, Ibaraki, JP;
Kenji Shachi, Ibaraki, JP;
Nobuhiro Miwa, Ibaraki, JP;
Kenji Shachi, Ibaraki, JP;
Kurarary Co., Ltd., Kurashiki-shi, JP;
Abstract
A thermoplastic polymer composition has good flexibility, lightweight properties, moldability, and heat resistance, and in particular, is excellent in wear resistance. The thermoplastic polymer composition includes: at least one block copolymer (a) selected from among an α-methylstyrene based block copolymer having a number average molecular weight of 30,000 to 500,000 and a hydrogenated product thereof, the α-methylstyrene based block copolymer including a polymer block A mainly composed of an α-methylstyrene unit and a polymer block B mainly composed of a conjugated diene unit; a propylene-based polymer (b); and an ethylene-based polymer (c) having a density of 0.94 g/cmor less, in a ratio satisfying the following inequalities (1) and (2):0.1≦()/[()+()+()]≦0.8  (1)1≦()/()  (2)wherein W(a), W(b), and W(c) represent the masses of the block copolymer (a), the propylene-based polymer (b), and the ethylene-based polymer (c), respectively.