Rubber composition
AssigneeSumitomo Chemical Company, Limited
InventorsYosuke Watanabe, Orhan Ozturk, Yasuo Uekita
Life of this patent
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Abstract
A rubber composition obtained by kneading at least one selected from the group consisting of (A1), (B1), (C1) and (D1), a rubber component and a filler, and a method of improving the viscoelastic property of vulcanized rubber, comprising a first step of kneading at least one selected from the group consisting of (A1), (B1), (C1) and (D1), a rubber component, a filler and a sulfur component and a second step of thermally treating the kneaded material obtained in the previous step. (A1): a compound represented by formula (I) (B1): a salt of a compound represented by formula (I) (C1): a solvate of a compound represented by formula (I) (D1): a solvate of a salt of a compound represented by formula (I).
Claims2
A salt represented by formula (III):
- in formula (III),
- R1 represents an optionally substituted alkanediyl group having 2 to 12 carbon atoms, an optionally substituted cycloalkanediyl group having 3 to 12 carbon atoms or a *—B1—Ar—B2—* group, * represents a connecting bond,
- B1 represents a single bond or an alkanediyl group having 1 to 12 carbon atoms,
- B2 represents a single bond or an alkanediyl group having 1 to 12 carbon atoms,
- Ar represents an optionally substituted di-valent aromatic hydrocarbon group having 6 to 12 carbon atoms,
- R2 and R3 represent each independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms, a hydroxy group or an alkoxy group having 1 to 6 carbon atoms, alternatively, are mutually linked to form an alkanediyl group having 2 to 12 carbon atoms,
- Yn+ represents an n-valent metal cation, NH4+ or an n-valent organic cation, n represents 1 or 2, and
- X represents —NH— or —O—.
Dependencies are inferred from the claim text.