Patent ID: 8672011
Filing Date: 2014-03-18
Classification: B60C,C08K,C08L,Y02T,Y10T

Abstract:
1. A bead apex composed of a rubber composition for a bead apex, said rubber composition comprising: 5 to 25 parts by weight of a phenol resin and/or a modified phenol resin; 5.25 to 6.5 parts by weight of sulfur; 1.0 to 2.5 parts by weight of hexamethylenetetramine; 2.0 to 5.0 parts by weight of a benzothiazole vulcanization accelerator which may contain a sulfenamide moiety; and 0.1 to 5 parts by weight of a condensate of alkyl phenol and sulfur chloride represented by the following chemical formula: wherein n is 0 or an integer of 1 to 10, X is an integer of 2 to 4, and R is an alkyl group having 8 carbon atoms, and 100 parts by weight of a diene rubber that is at least one member selected from the group consisting of natural rubbers, isoprene rubbers, butadiene rubbers, styrene-butadiene rubbers, and mixtures thereof,