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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 11034821 B1

PDFFull Text
Date of Patent:
Jun. 15, 2021

Filed:

Sep. 01, 2017

Rubber compositions

Applicant:

Kuraray Co., Ltd., Kurashiki, JP;

Inventors:

Hiromi Maeda, Chiyoda-ku, JP;

Daisuke Koda, Kamisu, JP;

Hiroshi Kanbara, Chiyoda-ku, JP;

Satomi Ohta, Chiyoda-ku, JP;

Assignee:

KURARAY CO., LTD., Okayama, JP;

Attorney:

Hauptman Ham, LLP

Primary Examiner:

Peter A Salamon

Int. Cl.
CPC ...
B60C 1/00 (2006.01); C08L 9/06 (2006.01); C08C 19/25 (2006.01); C08K 3/04 (2006.01); C08K 3/36 (2006.01); C08L 15/00 (2006.01); C08L 21/00 (2006.01); C08L 7/00 (2006.01); C08K 3/013 (2018.01);
U.S. Cl.
CPC ...
C08L 9/06 (2013.01); B60C 1/00 (2013.01); C08C 19/25 (2013.01); C08K 3/04 (2013.01); C08K 3/36 (2013.01); C08L 7/00 (2013.01); C08L 15/00 (2013.01); C08L 21/00 (2013.01); C08K 3/013 (2018.01); C08L 2312/00 (2013.01); Y02T 10/86 (2013.01);
Abstract

A rubber composition includes 100 parts by mass of a solid rubber (A), 0.1 to 50 parts by mass of a modified liquid diene rubber (B) having a functional group derived from a silane compound represented by the formula (1), and 20 to 200 parts by mass of a filler (C), the modified liquid diene rubber (B) satisfying (i) to (iii) below: (i) The weight average molecular weight (Mw) is 15,000 to 120,000. (ii) The vinyl content is not more than 70 mol %. (iii) The average number of functional groups per molecule of the modified liquid diene rubber (B) is 1 to 30.

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