Degradable foam-containing tires, related methods and kits for adding degradable foam to tires
AssigneeBridgestone Americas Tire Operations, LLC
InventorJoshua P. Abell
Life of this patent
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Abstract
Disclosed herein are kits for use in adding degradable foam to a tire, methods for preparing a degradable foam-containing tire, tires containing degradable foam, and methods for degrading the degradable foam in tires containing degradable foam. The degradable foam comprises a combination of (i) at least one di- or polyisocyanate, (ii) at least one polysiloxane diol, at least one polysiloxane diamine, or a combination thereof, and (iii) optionally at least one polyol.
Claims20
A method for degrading degradable foam within a tire containing degradable foam, the tire comprising:
- providing a wheel, a rubber carcass comprising at least a tread portion and a sidewall portion, and optionally a valve stem, and
- degradable foam comprised of a combination of:
- (i) at least one di- or polyisocyanate,
- (ii) at least one polysiloxane diol, at least one polysiloxane amine, or a combination thereof, and (iii) optionally at least one polyol, the degradable foam contained in the interior of the rubber carcass,
- the method comprising contacting the degradable foam with a solution comprising a source of fluoride anion.
A method for separating a wheel from a tire containing a degradable foam, the method comprising:
- providing the wheel and the tire containing the degradable foam, wherein the tire containing the degradable foam includes a rubber carcass comprising at least a tread portion, a sidewall portion, and optionally a valve stem,
- wherein the degradable foam is comprised of a combination of:
- (i) at least one di- or polyisocyanate, (ii) at least one polysiloxane diol, at least one polysiloxane amine, or a combination thereof, and (iii) optionally at least one polyol, the degradable foam contained in the interior of the rubber carcass, and
- contacting the degradable foam with a solution capable of degrading the foam and allowing separation of the wheel from the tire, the solution comprising either a source of fluoride anion or an organic acid having a pKa of less than 2, an inorganic acid having a pKa of less than 2 or a combination thereof.
Dependencies are inferred from the claim text.