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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.:

US 10184013 B1

PDFFull Text
Date of Patent:
Jan. 22, 2019

Filed:

Jun. 22, 2016

Modified plant fibers, additive for rubber, process for producing same, and rubber composition

Applicant:

Seiko Pmc Corporation, Chuo-Ku, Tokyo, JP;

Inventors:

Ryo Miyamori, Chiba, JP;

Syuichi Ohira, Chiba, JP;

Daisuke Kuroki, Chiba, JP;

Assignee:

SEIKO PMC CORPORATION, Tokyo, JP;

Attorney:

Arent Fox LLP

Primary Examiner:

Liam J Heincer

Int. Cl.
CPC ...
C08L 97/02 (2006.01); C08C 19/28 (2006.01); C08B 3/20 (2006.01); C08G 81/00 (2006.01); C08L 1/08 (2006.01); C08L 7/00 (2006.01); C08L 15/00 (2006.01); C08L 21/00 (2006.01); B29B 7/00 (2006.01); C08J 5/04 (2006.01); C08L 9/00 (2006.01); B29B 7/74 (2006.01); B29B 7/90 (2006.01); B29B 7/92 (2006.01);
U.S. Cl.
CPC ...
C08C 19/28 (2013.01); B29B 7/002 (2013.01); B29B 7/005 (2013.01); B29B 7/7495 (2013.01); B29B 7/905 (2013.01); B29B 7/92 (2013.01); C08B 3/20 (2013.01); C08G 81/00 (2013.01); C08J 5/045 (2013.01); C08L 1/08 (2013.01); C08L 7/00 (2013.01); C08L 9/00 (2013.01); C08L 15/00 (2013.01); C08L 21/00 (2013.01); C08L 97/02 (2013.01); C08L 2205/16 (2013.01);
Abstract

Provided are modified plant fibers suitable for addition to rubber; an additive for rubber comprising the modified plant fibers which can be micronized and dispersed easily and highly when adding to rubber; a method of preparing the additive for rubber; and a rubber composition comprising the additive for rubber. Modified plant fibers (A) in which plant fibers (a) and a modified synthetic rubber (B) are covalently bonded wherein the ratio of the modified synthetic rubber (B) relative to 100 parts by weight of the plant fibers (a) is 5 to 100 parts by weight. An additive for rubber comprising 20 to 75 weight % of the modified plant fibers (A) according to claimand 25 to 80 weight % of a processing agent for rubber (C), wherein the number average molecular weight of the processing agent for rubber (C) is 400 to 60,000, and the glass transition point of the processing agent for rubber (C) is 100° C. or less, and wherein the additive for rubber includes plant fibers in the ratio of 10 to 65 weight %.

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