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US 5,494,747 AGranted
Textile treatment
AssigneeG B Tools & Components Exports Limited
InventorDong S. Rha
Life of this patent
Estimating the term…
Abstract
Textile fabrics, yarns and cords are impregnated with rubber, resin and particulate materials by dipping in an aqueous dispersion comprising an aqueous rubber latex, resin and the particulate material, the dispersion further containing a very minor amount of a water-soluble silicate, such as sodium silicate. After drying, the products can be used as reinforcement for mechanical rubber goods and friction materials such as clutch facings and the like.
Claims12
A process for preparing a wound clutch facing comprising the successive steps of:
- (a) dispersing a resin and particulate filler in an aqueous rubber latex containing from 0.01% to about 30% by weight of a water-soluble silicate, said amount being based on the total weight of the dispersion;
- (b) in a single coating step passing a textile yarn through the aqueous dispersion formed in step (a) to impregnate the yarn with the aqueous dispersion;
- (c) preparing a preform clutch facing wound from the impregnated yarn of single coating step (b);
- and thereafter
- (d) press curing the preform to form a wound clutch facing.
2 more elements
Dependencies are inferred from the claim text.