The present invention is directed to a method making a pneumatic tire, comprising the steps of: mixing a sealant composition comprising an elastomer, a filler, a diluent, a quinoid curing agent, an oxidant co-curative; and a cure modifier of formula 1: ##STR00001##
wherein R.sup.1 and R.sup.2 are independently H or C1 to C4 alkyl, or R.sup.1 and R.sup.2 taken together form a substituted or unsubstituted phenylene group; R.sup.3 and R.sup.4 are independently H, NH.sub.2, C1 to C4 alkyl, or OR.sup.5 where R.sup.5 is C1 to C4 alkyl, with the proviso that when R.sup.1 and R.sup.2 are taken together to form a substituted or unsubstituted phenylene group, R.sup.5 is C1 to C3 alkyl; applying the sealant composition to an inner surface of a cured tire; and curing the sealant composition.

Provided is a pneumatic tire in which a sealant layer entirely exhibits sufficient sealing performance. The present invention relates to a pneumatic tire including a sealant layer located radially inside an innerliner, the sealant layer being formed by continuously and spirally applying a generally string-shaped sealant to the inner periphery of a tire in the tire width direction from one side to the other, the attachment start portion of the sealant being located tire-widthwise inward from the tire-widthwise end of the sealant layer.

An apparatus includes a grid circuit having dimensions corresponding to an inner surface of a tire, a computational device coupled to the grid circuit, and a wireless communications device coupled to the computational device. The wireless communications device is configured to transmit detection of damage to the grid circuit. A computer-implemented method includes monitoring a grid circuit positioned in a tire to detect damage to conductors of the grid circuit, detecting damage to at least one of the conductors of the grid circuit, and transmitting information about the damage to a computer of a vehicle. A computer-implemented method includes receiving, from a computational device coupled to a grid circuit in a tire, information about damage to the grid circuit and outputting an indication that the tire is damaged.

The present invention relates to: a sealing gel having a Mooney viscosity (ML1+4 @ 100 C.) in the range from 100 MU to 170 MU, a sealing compound comprising inventive sealing gel, a process for producing this sealing compound, the use of sealing gels for improving viscoelastic properties in sealing compounds, and the use of sealing gel-containing sealing compounds for improving rolling resistance properties in tyres having sealing layers.

Disclosed is a pneumatic tire including a film attached to an inner liner, and a plurality of porous sound absorbing members attached to the film and arranged at a predetermined interval. According to the pneumatic tire, occurrence of resonance noise in the tire may be reduced.

Provided is a pneumatic tire of the present disclosure comprising a puncture prevention member bonded to at least a part of an inner surface of a tire body, and the puncture prevention member satisfies relational expressions:

S100MT+4.5 and Y/(MT)2, where M is a 100% modulus in MPa of a portion of the puncture prevention member in which the 100% modulus is lowest, T is a thickness in mm of the portion of the puncture prevention member, Y is an initial rigidity in N/mm during nail intruding, and S is a penetration strength in N of a portion of the puncture prevention member in which the penetration strength is highest.

A pneumatic tire comprises a puncture prevention member adhered to at least a part of an inner surface of a tire body, wherein the puncture prevention member includes one or more protective layers each of which includes: an internal pressure retention layer; and a protective material located on a tire outer surface side of the internal pressure retention layer in at least a part of an extending region of the internal pressure retention layer.

Provided is a pneumatic tire including an indicator made of a protrusion portion or a recess portion extending in a tire circumferential direction is formed on a tire inner surface. A sound absorbing member or a sealant layer is applied to the tire inner surface along the indicator.

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 pneumatic tire is vulcanized using a bladder provided with a coating layer formed of a release agent, and includes a sealant layer disposed on an inner surface of a tread portion in a tire circumferential direction, the release agent having a thickness of from 0.1 m to 100 m in at least a placement region of the sealant layer, detected using an electron microscope.