IDiyas

For the Inventor, By the Inventor

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 9371342 B1

PDFFull Text
Date of Patent:
Jun. 21, 2016

Filed:

Jun. 28, 2011

Isoprene oligomer, polyisoprene, processes for producing these materials, rubber composition, and pneumatic tire

Applicants:

Yukino Miyagi, Kobe, JP;

Naoya Ichikawa, Kobe, JP;

Norimasa Ohya, Yamagata, JP;

Inventors:

Yukino Miyagi, Kobe, JP;

Naoya Ichikawa, Kobe, JP;

Norimasa Ohya, Yamagata, JP;

Assignees:

SUMITOMO RUBBER INDUSTRIES, LTD., Kobe-Shi, JP;

YAMAGATA UNIVERSITY, Yamagata-Shi, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Pancham Bakshi

Int. Cl.
CPC ...
C08F 136/08 (2006.01); C07F 9/09 (2006.01); B60C 1/00 (2006.01); C08F 36/08 (2006.01); C08L 9/00 (2006.01); C12N 9/10 (2006.01); B60C 13/00 (2006.01); C12P 5/00 (2006.01); C12P 7/00 (2006.01); C12P 7/04 (2006.01); C12P 7/24 (2006.01); C12P 7/40 (2006.01); C12P 7/62 (2006.01); C12P 9/00 (2006.01); C12P 13/00 (2006.01); C12P 13/02 (2006.01);
U.S. Cl.
CPC ...
C07F 9/098 (2013.01); B60C 1/00 (2013.01); B60C 1/0016 (2013.04); B60C 1/0025 (2013.04); B60C 13/001 (2013.04); C08F 36/08 (2013.01); C08L 9/00 (2013.01); C12N 9/1085 (2013.01); C12P 5/007 (2013.01); C12P 7/00 (2013.01); C12P 7/04 (2013.01); C12P 7/24 (2013.01); C12P 7/40 (2013.01); C12P 7/62 (2013.01); C12P 9/00 (2013.01); C12P 13/00 (2013.01); C12P 13/002 (2013.01); C12P 13/02 (2013.01); Y02P 20/52 (2015.11);
Abstract

The invention relates to an isoprene oligomer that contains a trans structural moiety and a cis structural moiety, which can be represented by the following formula (1), wherein at least 1 atom or group in the trans structural moiety is replaced by another atom or group. The invention also relates to a polyisoprene, which is biosynthesized using the isoprene oligomer and isopentenyl diphosphate. Further, this invention provides a rubber composition comprising the isoprene oligomer and/or the polyisoprene, and a pneumatic tire, including tire components (e.g., treads and sidewalls) formed from the rubber composition. wherein n represents an integer from 1 to 10; m represents an integer from 1 to 30; and Y represents a hydroxy group, a formyl group, a carboxy group, an ester group, a carbonyl group, or a group represented by the following formula (2):

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