Vulcanized rubber surface treatment agent, method of producing adhesive structure, adhesive structure, and tire
AssigneeBridgestone Corporation
InventorsTakuya OZAKI, Shinichiro SUGI, Masahiro HOJO
Life of this patent
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Abstract
Provided is a vulcanized rubber surface treatment agent that enables firm adhesion between vulcanized rubbers without heating and has little effect on rubber deterioration. The vulcanized rubber surface treatment agent is used for adhering vulcanized rubbers to each other, which is an aqueous solution of hypochlorous acid having a pH value of 2 or more and 7 or less and an effective chlorine concentration of 100 ppm or more and 13000 ppm or less.
Claims13
A vulcanized rubber surface treatment agent used for adhering vulcanized rubbers to each other, which is
- an aqueous solution of hypochlorous acid having a pH value of 2 or more and 7 or less and an effective chlorine concentration of 100 ppm or more and 13000 ppm or less.
A method of producing an adhesive structure, which is a method for obtaining an adhesive structure in which a first vulcanized rubber and a second vulcanized rubber are adhered to each other, comprising
- a first application process of applying an aqueous solution of hypochlorous acid having a pH value of 2 or more and 7 or less and an effective chlorine concentration of 100 ppm or more and 13000 ppm or less on a surface of the first vulcanized rubber,
- a second application process of applying an adhesive to a surface of the aqueous solution of hypochlorous acid applied in the first application process, and
- an adhesion process of adhering the first vulcanized rubber and the second vulcanized rubber to each other via the aqueous solution of hypochlorous acid applied in the first application process and the adhesive applied in the second application process.
An adhesive structure in which a first vulcanized rubber and a second vulcanized rubber are adhered to each other via an adhesive layer, wherein
- the adhesive layer contains either or both of a urethane compound and an epoxy compound, and
- at least a part of surfaces of the first vulcanized rubber and the second vulcanized rubber that are in contact with the adhesive layer is chlorinated.
Dependencies are inferred from the claim text.