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:
Jul. 19, 2016
Filed:
Jun. 03, 2015
Sumitomo Rubber Industries, Ltd., Kobe-shi, Hyogo, JP;
Kyushu University, Fukuoka-shi, Fukuoka, JP;
Yasuhisa Minagawa, Kobe, JP;
Yasuhiko Kondo, Kobe, JP;
Tetsuo Mizoguchi, Kobe, JP;
Atsushi Takahara, Fukuoka, JP;
Motoyasu Kobayashi, Fukuoka, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe-Shi, JP;
KYUSHU UNIVERSITY, Fukuoka-Shi, JP;
Abstract
Provided are: surface modification method for imparting slidability to surface of elastic body such as vulcanized rubber or thermoplastic elastomer without using expensive self-lubricating resin; surface-modified elastic body with polymer brush formed on its surface; and gasket for injector and injector formed of surface-modified elastic body. The surface modification method applies to surface of thermoplastic elastomer or vulcanized rubber. The surface modification method comprises the step of forming hydroxyl group on surface of to-be-modified object such as rubber so that water contact angle of the surface becomes 8 to 50 degrees smaller than original water contact angle in unmodified condition, the step of forming polymerization initiation site by subjecting the hydroxyl group to action of secondary or tertiary organic halide, and the step of growing polymer brush on the surface of to-be-modified object by subjecting monomer to radical polymerization at the polymerization initiation site acting as a point of initiation.