Toothed belt
OwnerMasato Tomobuchi, Hiroshi Kikuchiinventors
Life of this patent
Estimating the term…
Abstract
Toothed belts are provided having a plurality of teeth portions formed on a surface of a belt body rubber layer, in which a plurality of core strands are buried in the longitudinal direction of the belt, and a tooth cloth is coated on the surface of the teeth portions. The belt body rubber layer comprises a rubber composition comprising a mixed polymer obtained by formulating a hydrogenated nitrile rubber and a polymer alloy into which zinc polymethacrylate is finely distributed in a hydrogenated nitrile rubber in a range of 80:20 to 5:95 parts by weight, and crosslinking by an organic peroxide.
Claims9
A toothed belt comprising a plurality of teeth portions on at least one surface of a belt body rubber layer and a tooth cloth coated on the surface of said plurality of teeth portions,
- wherein said belt body rubber comprises a plurality of buried core strands in the longitudinal direction of the belt,
- wherein further said belt body rubber layer comprises a rubber composition comprising a mixed polymer obtained by formulating a hydrogenated nitrile rubber and a polymer alloy into which zinc polymethacrylate is finely distributed in a hydrogenated nitrile rubber in a range of 80:20 to 5:95 parts by weight and crosslinking by an organic peroxide, and
- wherein further said hydrogenated nitrile rubber has an iodine value of 4 to 56 g, said polymer alloy has a Mooney value of 70 or more at 100° C., and said belt body rubber layer is colored by at least one color other than black.
A toothed belt comprising a plurality of teeth portions on at least one surface of a belt body rubber layer and a tooth cloth coated on the surface of said plurality of teeth portions,
- wherein said belt body rubber comprises a plurality of buried core strands in the longitudinal direction of the belt,
- wherein further said belt body rubber comprises a rubber composition comprising a mixed polymer obtained by formulating a polymer alloy into which zinc polymethacrylate is finely distributed in a hydrogenated nitrile rubber and ethylene-vinyl acetate copolymer in a range of 5:95 to 95:5 parts by weight, and crosslinking by an organic peroxide, and
- wherein further said hydrogenated nitrile rubber has an iodine value of 4 to 56 g, said polymer alloy has a Mooney value of 70 or more at 100° C., said ethylene-vinyl acetate copolymer has an amount of vinyl acetate of 40 to 91% and a Mooney value of 20 to 70 at 100° C., and said body rubber layer is black or at least one color other than black.
A toothed belt comprising a plurality of teeth portions on at least one surface of a belt body rubber layer and a tooth cloth coated on the surface of said plurality of teeth portions,
- wherein said belt body rubber comprises a plurality of buried core strands in the longitudinal direction of the belt,
- wherein further said belt body rubber comprises a rubber composition comprising a mixed polymer obtained by formulating a hydrogenated nitrile rubber, a polymer alloy into which zinc polymethacrylate is finely distributed in said hydrogenated nitrile rubber in a range of 80:20 to 5:95 parts by weight, and an ethylene-vinyl acetate copolymer in said polymer alloy in a range of 5:95 to 95:5, and crosslinking by an organic peroxide, and
- wherein further said hydrogenated nitrile rubber has an iodine value of 4 to 56 g, said polymer alloy has a Mooney value of 70 or more at 100° C., said ethylene-vinyl acetate copolymer has an amount of vinyl acetate of 40 to 91% and a Mooney value of 20 to 70 at 100° C., and said belt body rubber layer is black or at least one color other than black.
Dependencies are inferred from the claim text.