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.

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.

Provided is a sealant composition that makes it possible to suppress a flow of a sealant associated with travel while maintaining good sealing properties. As a sealant composition constituting a sealant layer (10) disposed on the inner surface of a pneumatic tire, the following are used: a sealant composition demonstrating a tensile stress at 20% elongation at 23° C. of 0.03 MPa or less and a tensile stress at 20% elongation at 80° C. of 0.002 MPa; or a sealant composition demonstrating a viscosity V.sub.0 at 0° C. of from 2 kPa.Math.s to 15 kPa s, a viscosity V.sub.40 at 40° C. of from 1 kPa s to 14 kPa s, and a viscosity V.sub.80 at 80° C. of from 0.5 kPa.Math.s to 12 kPa.Math.s.

In the pneumatic tire including a sealant layer containing an adhesive sealant on an inner surface of a tread portion, when a thickness of the sealant layer at 0° C. is G.sub.0, a thickness of the sealant layer at 50° C. is G.sub.50, a width of the sealant layer at 0° C. is W.sub.0, and a width of the sealant layer at 50° C. is W.sub.50, a rate of change R.sub.G of thickness expressed by R.sub.G=(|G.sub.50−G.sub.0|/G.sub.0)×100 is set to 3% or less, and a rate of change R.sub.W of width expressed by R.sub.W=(|W.sub.50−W.sub.0|/W.sub.0)×100 is set to 3% or less.

This invention reveals an uncured pneumatic tire which is comprised of a generally toroidal-shaped supporting carcass with an outer circumferential tread, two spaced beads, at least one ply extending from bead to bead, sidewalls extending radially from and connecting said tread to said beads, a sealant layer which is disposed inwardly from the supporting carcass, and an innerliner which is disposed inwardly from the sealant layer, wherein said circumferential tread is adapted to be ground-contacting, and wherein the sealant layer is comprised of polyisobutylene or a butyl rubber, wherein the polyisobutylene or the butyl rubber has a number average molecular weight which is within the range of 30,000 to 100,000.

Tires having a magnetic tire sealing material containing magnetic particles are described for detecting the presence of one or more sealed punctures in the tire. The tires can have a sealed tire portion that is formed by the magnetic tire sealing material flowing into and filling a puncture in the tire. The sealed tire portion includes a portion having magnetic particles and the portion being at the outer surface of the tire such as in the tread area. The tire can be positioned within the detection zone of an apparatus capable of detecting magnetic particles to indicate whether the tire contains a sealed puncture filled with the magnetic tire sealing material.

Tires having an electrically conductive tire sealing material containing metallic electrically conductive particles are described for detecting the presence of one or more sealed puncture areas in the tire. The tires can have a sealed tire portion that is formed by the electrically conductive tire sealing material flowing into and filling a puncture in the tire. The sealed tire portion includes a portion having electrically conductive particles and the portion being at the outer surface of the tire such as in the tread area. The tire can be positioned to be in contact with a conductive section of an apparatus capable of measuring electrical conductivity.

An expiration date notification method uses an information terminal device that comprises a storage unit that stores an expiration date of a puncture repair liquid contained in a container; a notification condition setting unit that sets a notification period and a notification method for notifying of a replacement period of the puncture repair liquid based on the expiration date stored in the storage unit; a notifying unit that notifies of the replacement period of the puncture repair liquid; and a control unit that controls the notifying unit based on settings of the notification condition setting unit, the method comprising: after the expiration date is input into the storage unit of the information terminal device, the information terminal device notifying of the replacement period of the puncture repair liquid within a preset notification period including before and after the expiration date of the puncture repair liquid via a preset notification method.

An object of the present invention is to provide a tire sealant and a tire repair kit that exhibit excellent injectability. Provided is a tire sealant including a natural rubber latex, a synthetic resin emulsion, an anti-freezing agent, a surfactant, and a chelating agent, wherein the content of the chelating agent is 0.1 mass % or greater.

A puncture sealing agent is disclosed which comprises natural rubber latex, an aqueous solution of an adhesive and an antifreezing agent. The adhesive is a carbohydrate and the puncture sealing agent comprises a solid content resulting from the natural rubber latex in an amount of 21 wt % or less, based on the total weight of the puncture sealing agent.