Disclosed herein are a sealant composition for use with tires, a tire having at least one component with at least one surface at least partially coated with the sealant composition, and related methods for applying the sealant composition to tires. The sealant composition comprises biorubber and a softener comprising at least one of plant oil or plant resin and has a non-petroleum content of at least 70% by weight.

An object of the present invention is to provide a tire sealant having excellent injectability and a tire repair kit. The present invention relates to a tire sealant containing a natural rubber latex; a synthetic resin emulsion; an anti-freezing agent; and phosphate ions or acetate ions; wherein the content of the phosphate ions is from 4.510.sup.3 to 11.010.sup.3 mass %; the content of the acetate ions is from 0.05 to 0.2 mass %; and the relative dielectric constant of the tire sealant is not less than 52.9; and a tire repair kit using the tire sealant.

Provided is a rubber composition for a sealant which can be vulcanized at low temperature and is suitable in a retentivity, an adhering property, followability and a fluidity and which is excellent in a sealing property, wherein the rubber composition is prepared by blending 100 parts by mass of a rubber component containing butyl rubber and/or EPDM, 2 to 10 parts by mass of zinc oxide, 1 to 5 parts by mass of a thiuram vulcanization accelerator, satisfying the thiuram vulcanization accelerator: the zinc oxide=1:1 to 1:3, and 150 parts by mass or more of liquid polybutene or a process oil.

A tubular structure including an outer tube an inner tube arranged within the outer tube and at least one chamber formed between the outer tube and the inner tube. The tubular structure additionally includes at least one self-healing material arranged in the chamber, wherein the self-healing material is configured to solidify and/or expand upon contact with a reacting material.

Subject matter disclosed herein relates to sealant for tire repairing and more particularly, relates to sealant composition for repairing tire punctures and a method of preparing the same.

A method for making a compartmentalized sealant strip and barrier assembly 10 has the steps of co-extruding a barrier strip 9 of non-sealant elastomeric material with a plurality of projecting linear extending walls 9c and a sealant strip 11 wherein the sealant strip 11 is formed on one side of the barrier strip 9 filling the space between the plurality of projecting walls 9c to form a plurality of linearly extending rows of sealant 11 across the transverse width of the co-extrusion to form the compartmentalized sealant strip and barrier assembly 10. The step of co-extruding may further include the step of: forming the projecting walls 9c on an inclined angle relative to a plane perpendicular to the width of the assembly 10. The step of co-extruding further has the step of forming the barrier strip 9 with lateral edges 9a and 9c that extend beyond the lateral outermost sealant strips 11 on each side of the assembly 10, the lateral edges 9a, 9b being bonding surfaces to seal the sealant strip and barrier assembly 10 into an uncured rubber layer when assembled into an unvulcanized tire 2.

A tire sealant composition is provided for sealing punctures in pneumatic tires, particularly in the extreme outer shoulder edge and sidewall, comprising a liquid carrier comprising one or more components selected from water, a glycol and glycerine; latex in an amount between about 0.5 to about 6.0% by weight of the composition; a polysaccharide suspending agent and a particulate material with a particle size of less than 300 m; wherein the viscosity of the sealant composition is less than 1000 cP. The composition allows for passage through the tire valve without the need for removal of the valve core.

An apparatus for producing a semi-finished product with a strip of sealing compound for building tyres, having at least one unsaturated styrene thermoplastic elastomer, one bonding resin and one cross-linking agent is described.

The present invention is directed to a tire with in-situ generated built-in puncture sealant comprising a supporting tire carcass comprised of one or more layers of ply, an outer circumferential tread, and a radially inner layer, a pair of beads, sidewalls extending radially inward from the axial outer edges of the tread portion to join the respective beads, a sealant comprising the chain cessation product of a butyl ionomer-based rubber sealant precursor composition catalyzed by peroxide disposed inwardly from said radially inner layer, and wherein said sealant provides self-sealing properties to the tire.

A method for forming a sealant layer in a tire is described, wherein the tire produced is balanced. The method comprising the steps of: providing a tire; and spraying a sealant layer on the inside of the tire, under the crown, wherein the sealant layer is sprayed at a zero degree angle with respect to the tire mid-circumferential plane as the tire is rotated.