Laminated rubber structure
AssigneeTokai Rubber Industries, Ltd.
InventorKazuhiko Nishimura
Life of this patent
Estimating the term…
Abstract
A laminated rubber structure having a first layer formed of a first rubber composition including a copolymer of tetrafluoroethylene, vinylidene fluoride, and hexafluoropropylene, the copolymer having at least one peroxide-crosslinking peroxide unit each bonded to a corresponding one of at least one end thereof, and containing 10 to 50 mole % of the vinylidene fluoride; and a second layer formed of a second rubber composition which includes an acrylonitrile-butadiene rubber containing 25 to 45 weight % of acrylonitrile, and a bifunctional crosslinking aid, the second layer contacting the first layer, the first and second layers being chemically bonded to each other by crosslinking caused between the copolymer and the acrylonitrile-butadiene rubber owing to the peroxide-crosslinking unit.
Claims20
A laminated rubber structure comprising:
- a first layer formed of a first rubber composition including a copolymer of tetrafluoroethylene, vinylidene fluoride, and hexafluoropropylene, said copolymer having at least one peroxide-crosslinking unit each bonded to a corresponding one of at least one end thereof, and containing 10 to 50 mole % of said vinylidene fluoride;
- and
- a second layer formed of a second rubber composition including an acrylonitrile-butadiene rubber containing 25 to 45 weight % of acrylonitrile, and a bifunctional crosslinking aid, said second layer contacting said first layer,
- said first and second layers being chemically bonded to each other by crosslinking caused between said copolymer and said acrylonitrile-butadiene rubber owing to said peroxide-crosslinking unit.
A rubber hose comprising:
- an inner tube;
- an outer tube located radially outwardly of said inner tube;
- and
- a reinforcing fiber layer interposed between said inner and outer tubes, such that said inner and outer tubes and said reinforcing fiber layer cooperate with each other to provide an integrally bonded tubular body,
- said inner tube including
- an inner layer formed of a first rubber composition including a copolymer of tetrafluoroethylene, vinylidene fluoride, and hexafluoropropylene, said copolymer having a peroxide-crosslinking unit bonded to an end thereof, and containing 10 to 50 mol % of said vinylidene fluoride;
- and
- an outer layer located radially outwardly of said inner layer, said outer layer being formed of a second rubber composition including an acrylonitrile-butadiene rubber containing 25 to 45 weight % of acrylonitrile, and a bifunctional crosslinking aid, said outer layer contacting said inner layer,
- said inner and outer layers being chemically bonded to each other by crosslinking caused between said copolymer and said acrylonitrile-butadiene rubber owing to said peroxide-crosslinking unit.
Dependencies are inferred from the claim text.