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US 2019/0270276 A1Published application
Carbamate resin for polyurethane adhesion
AssigneeBridgestone Americas Tire Operations, LLC
InventorRoss W. Widenor
Life of this patent
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Abstract
A composite of a rubber layer and a polyurethane substrate are adhered together without the need for a separate adhesive layer. An adhesion-promoting composition incorporated into the rubber layer provides the means for adhereing the rubber layer to the polyurethane substrate. The adhered layered composition may be used in many applications including the construction of tires.
Claims20
A composite comprising:
- a. a rubber layer, the rubber layer comprising a first layer surface and the rubber layer comprising an adhesion-promoting composition, the adhesion-promoting composition comprising an alkyl urethane and an aldehyde;
- and
- b. a polyurethane substrate adjacent to the rubber layer, the polyurethane substrate comprising a first substrate surface.
A method of adhering a rubber composition to a polyurethane substrate comprising the steps of:
- a) mixing a composition, the composition comprising an alkyl urethane and an aldehyde, with a rubber compound to form a treated rubber compound;
- b) curing the treated rubber compound by heating to form a cured rubber compound;
- c) contacting the cured rubber compound to the polyurethane substrate to form a composite;
- and
- d) heating the composite of the cured rubber compound and the polyurethane substrate.
2 more elements
Dependencies are inferred from the claim text.