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US 5,626,953 AGranted
Fiber-reinforced elastic body and power transmission belt using the same
AssigneeBando Chemical Industries, Ltd.
InventorsHiroshi Fujimoto, Kimichika Ohno
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AssigneeBando Chemical Industries, Ltd.
InventorsHiroshi Fujimoto, Kimichika Ohno
Estimating the term…
In a V-ribbed belt, cords made of polyester fibers are embedded into an adhesion rubber layer made of chlorosulfonated polyethylene rubber whose polymer ingredient is so compounded that the content of chlorine is 15 to 35 wt. % and the content of sulfur is 0.5 to 2.5 wt. %, thereby reinforcing the adhesion rubber layer. The cords are treated with two kinds of adhesives. A first adhesive for first treatment is an adhesive having at least one of an isocynate compound and an epoxy compound. A second adhesive for second treatment is an adhesive formed of a mixture having at least resorcineformaldehyde resin and 2,3-dichlorobutadiefie-contained polymer. A surfactant is added to the second adhesive so that the cords and the adhesion rubber layer are Securely adhered, thereby enhancing dynamic adhesive strength of the V-ribbed belt.
A fiber-reinforced elastic body composed of chlorosulfonated polyolefin reinforced by polyester fibers, which fibers are treated with a first adhesive comprising an isocyanate compound or an epoxy compound and are then treated with a second adhesive formed from a mixture comprising resorcinol-formaldehyde resin liquid and a 2,3 dichlorobutadiene polymer, wherein the chlorosulfonated polyolefin has a chlorine content of 15 to 35 wt. % and a sulfur content of 0.5 to 2.5 wt. %,
Dependencies are inferred from the claim text.