Rubber composition having intramolecular double bond

摘要

Provided is a rubber composition having an intramolecular double bond capable of sulfur cross-linking, comprising at least one of 1 to 100 parts by mass of carbon black and 10 to 150 parts by mass of an inorganic filler other than carbon black, 0.1 to 50 parts by mass of a sulfur-containing compounding agent and 0.1 to 30 parts by mass of a hydrocarbon compound with both terminal groups thioesterified, per 100 parts by mass of the rubber having an intramolecular double bond capable of sulfur cross-linking. This rubber composition can provide a vulcanized substance having excellent toughness, for example, as a part of at least one of a cap tread, a side wall, a belt, an inner liner, a carcass and a bead of a pneumatic tire without substantially reducing processability of an unvulcanized substance and vulcanizate physical properties of the vulcanized substance.

主权项

1. A rubber composition having an intramolecular double bond capable of sulfur cross-linking, comprising at least one of 1 to 100 parts by mass of carbon black and 10 to 150 parts by mass of an inorganic filler other than carbon black, 0.1 to 50 parts by mass of a sulfur-containing compounding agent and 0.1 to 30 part by mass of two or three terminal groups thioesterified hydrocarbon or oxyhydrocarbon compound, per 100 parts by mass of the rubber having an intramolecular double bond capable of sulfur cross-linking,
wherein the both terminal groups thioesterified hydrocarbon or oxyhydrocarbon compound is a hydrocarbon derivative represented by the general formula [I] or [II],wherein A represents a divalent or trivalent group as an alkylene or oxyalkylene group of C1 to C20 ,an aryl group or an alkylene group substituted with an aryl group, and R1, R2 R3, R4and R5 are the same or different from each other, akylene or oxyalkylene groups of C1 to C20, aryl groups, aralkyl groups, hydroxy groups, amino groups halogen groups, or hydrogen groups.