Rubber composition and rubber product
AssigneeBridgestone Corporation
InventorTomoyuki Kosai
Life of this patent
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Abstract
Provided is a rubber composition that can improve the balance between the hysteresis loss of rubber at low strain and the hysteresis loss of rubber at high strain. The rubber composition comprises a rubber component, and at least one compound selected from the group consisting of the general formulas (1) and (2), HS—R—COOM (1), and MOCO—R—(S)n—R—COOM (2), where R is independently a linear or branched hydrocarbylene group having 8 or more carbon atoms in a linear portion connecting the sulfur atom and the COOM group; M is independently an atom selected from the group consisting of an alkali metal and an alkaline earth metal; and n is an integer from 2 to 8.
Claims13
A rubber composition, comprising:
- a rubber component, and
- at least one compound selected from the group consisting of the following general formulas (1) and (2),
- HS—R—COOM (1), and
- MOCO—R—(S)n—R—COOM (2),
- wherein
- R is independently a linear or branched hydrocarbylene group having 8 or more carbon atoms in a linear portion connecting the sulfur atom and the COOM group;
- M is independently an atom selected from the group consisting of an alkali metal and an alkaline earth metal;
- n is an integer from 2 to 8;
- and
- the M of a plurality of COOM groups and the COOM moiety of the COOM group are coordinated to form a noncovalent bond between the networks of the polymers of the rubber component.
Dependencies are inferred from the claim text.