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. 30, 2007
Filed:
Jun. 13, 2002
Masaki Ikuji, Ibaraki, JP;
Koichi Wada, Ibaraki, JP;
Masanari Uno, Ibaraki, JP;
Kuraray Co., Ltd., Kurashiki, JP;
Abstract
A process for production of a thermoplastic elastomer composition by melt-kneading a mixture in one step to thereby conduct dynamic crosslinking, wherein the mixture comprises a hydrogenated block copolymer (a) which is prepared by hydrogenating a block copolymer comprising a vinyl aromatic polymer block (A) and a conjugated diene polymer block (B) and has number-average molecular weight of 200000 or above and, if necessary, a non-hydrogenated block copolymer (a) comprising a vinyl aromatic polymer block (A) and a conjugated diene polymer block (B), and contains a non-aromatic rubber softening agent (b), a peroxide-crosslinkable olefin resin (c) having a density of 0.94 g/cmor above, a peroxide-decomposable olefin resin (d), an organic peroxide (e), and a crosslinking aid (f), the amount of (b) being 50 to 250 parts by mass per 100 parts by mass of the sum of (a) +(a), the amount of (c) being 2.5 to 50 parts by mass per 100 parts by mass of (a); and the amount of (d) being 0.5 to 10 times that of (c) by mass.