Vibration damping rubber composition
AssigneeTokai Rubber Industries, Ltd.
InventorsNorihito Kimura, Fumihiko Jinno, Takehiko Taguchi
Life of this patent
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Abstract
A vibration damping rubber composition having an excellent vibration damping performance includes the following (A) to (C) as essential components: (A) a diene-based rubber; (B) a vulcanizing agent of a bismaleimide compound represented by the following formula (1): [wherein X denotes a substituted or unsubstituted aliphatic saturated hydrocarbon group; and R1 to R4 may be the same or different and each denote a hydrogen atom, an alkyl group, —NH2, or —NO2, provided that the bismaleimide compound represented by formula (1) excludes a compound in which X is —(CH2)n- (n is an integer of 4 to 12) and all R1 to R4 are hydrogen atoms], wherein the vulcanizing agent is sulfur-free; and (C) a vulcanization accelerator.
Claims4
A vibration damping rubber composition comprising:
- a diene-based rubber;
- a vulcanizing agent of a bismaleimide compound represented by the following formula (1):
- [wherein X denotes a substituted or unsubstituted aliphatic saturated hydrocarbon group;
- and R1 to R4 may be the same or different and each denote a hydrogen atom, an alkyl group, —NH2, or —NO2, provided that the bismaleimide compound represented by formula (1) excludes a compound in which X is —(CH2)n- (n is an integer of 4 to 12) and all R1 to R4 are hydrogen atoms], wherein the vulcanizing agent is sulfur-free;
- and
- a vulcanization accelerator.
Dependencies are inferred from the claim text.