Patent ID: 9394647
Filing Date: 2016-07-19
CPC Classification: C08G,C08J,C08K,C08L,C09J,D06M

Claim Text:
1. A bonding method, wherein an adhesive layer is formed by covering an organic fiber cord for tire reinforcement formed by twisting organic fibers with an adhesive composition for organic fiber cords which contains either a (blocked) isocyanate compound or a (blocked) isocyanate compound and an amine-based curing agent (A), an epoxy compound (B) and rubber latex (C) without resorcinol and formaldehyde, and the organic fiber cords and rubber are bonded via the adhesive composition for organic fiber cords, wherein the ratio of the mass of the (blocked) isocyanate compound (A) a to the mass of the epoxy compound (B) b, a/b, is not smaller than 0.1 and not larger than 30, and wherein the rubber latex (C) is constituted of vinylpyridine-styrene-butadiene copolymer latex, which is constituted of vinylpyridine-styrene-butadiene copolymer latex having a double structure, which can be obtained by (i) polymerizing a monomer mixture having a styrene content of 30 to 60% by mass, a butadiene content of less than 60% by mass and a vinylpyridine content of 0.5 to 15% by mass, (ii) then, polymerizing a monomer mixture having a styrene content of 10 to 40% by mass, a butadiene content of 45 to 75% by mass and a vinylpyridine content of 5 to 20% by mass, at a lower styrene content than that used in the polymerization in the item (i).