Provided is a sealant composition that can ensure good sealing properties while suppressing a flow of a sealant during travel and that can provide such performance in a well-balanced, compatible manner. As a sealant composition constituting a sealant layer (10) disposed in an inner surface of a…
An efficient tire sealant that is environmentally friendly or less damaging to the environment, which is characterized by a high stability, good processability, and safe application. The tire sealant includes approximately 5 wt. % to approximately 50 wt. % of a bio-based aliphatic diol…
A sealant composition according to an embodiment includes, per 100 parts by mass of a solid rubber component containing a diene rubber, 95 to 150 parts by mass of a hydrocarbon resin, 20 to 100 parts by mass of a liquid plasticizer, and 0.05 to 4.5 parts by mass of an organic peroxide crosslinking…
The sealant composition according to an embodiment includes, per 100 parts by mass of a solid rubber component containing 60 parts by mass or more of natural rubber: 95 to 150 parts by mass of a hydrocarbon resin containing 30 parts by mass or more of a terpene-based resin; and 20 to 100 parts by…
A sealant composition according to an embodiment includes, per 100 parts by mass of a solid rubber component containing a diene rubber, 95 to 150 parts by mass of a hydrocarbon resin, 20 to 100 parts by mass of a liquid plasticizer, and 20 to 80 parts by mass of silica.
A pneumatic tire (10) comprising a radially outer circumferential rubber tread (14) disposed on a supporting carcass (17) and a sealant layer (20) forming at least locally a radially inner surface of the tire (10) is disclosed. The sealant layer (20) comprises 100 parts by weight of an ionomer and…
A self-healing rubber composition comprising: a functionalized elastomer comprising a polymeric backbone chain derived from a monomer comprising at least one conjugated diene monomer and optionally at least one vinyl aromatic monomer, and a functional group bonded to the backbone chain, the…
The present invention is directed to a pneumatic tire (10) with a built-in sealant layer. The tire (10) comprises an outer circumferential rubber tread (14), a carcass (16), and an innerliner layer (22) disposed radially inwardly from the carcass (16), wherein the tire comprises a built-in sealant…
The present invention is directed to a pneumatic tire having a built-in seamless polyurethane sealant layer and its preparation. The tire comprises an outer circumferential rubber tread (14), a supporting carcass, an optional rubber barrier layer (13) disposed inwardly of the carcass, a built-in…
The present invention is directed to a pneumatic tire comprising a sulfur cured assembly comprising an outer circumferential rubber tread (14), a supporting carcass, an inner liner rubber layer (22) inwardly disposed on the supporting carcass, a built-in polymeric sulfur curable thermoplastic…
A tire sealant precursor composition is disclosed comprising a butyl rubber and a combination of organoperoxides comprising 4,4-di-(tertiary butylperoxy) valerate and dicumyl peroxide. The ratio of dicumyl peroxide to 4,4-di-(tertiary butylperoxy) valerate is in a range of from 3/1 to 30/1. The…
A pneumatic tire of which self-seal function can be improved while the increase in weight of the tire is minimized. The pneumatic tire having an adhesive sealant layer in the region corresponding to at least a tread portion on the inner side of the tire, the adhesive sealant layer being constituted…
This invention relates to a pneumatic tire having a built-in non-black colored sealant layer and its preparation. The sealant layer is derived from a sealant precursor layer comprised of a butyl rubber, organoperoxide, particulate, synthetic amorphous silica and plant-derived organic agricultural…
A process for producing a cement for adjusting a rubber product comprising 100 parts by weight of a rubber component and 10 to 500 parts by weight of an inorganic filler. In the first mixing step, the rubber component and components for compounding are mixed while the amount of the inorganic filler…
This invention relates to a pneumatic tire having a built-in sealant layer and its preparation. The sealant layer precursor is a layer of a butyl rubber based composition which contains an organoperoxide. The butyl rubber of said precursor is a copolymer of isobutylene and isoprene containing from…
Disclosed are a pneumatic tire, which exhibits excellent puncture-preventing function while avoiding inconvenience aroused when a sealant layer is formed based on decomposition reaction of polyisobutylene, a process for producing the same and a sealant rubber composition. This pneumatic tire is…
A sealant rubber composition which forms a spongy tacky sealant layer having moderate viscosity properties; and a pneumatic tire having in the tire main body a tacky sealant layer obtained by heating the rubber composition. The rubber composition comprises 0.2 to 20 parts by weight of a peroxide…
A pneumatic tire having a puncture-preventive sealant layer that suppresses the generation of decomposition gas and is high in viscosity; and a method of producing the same. This pneumatic tire has a sealant layer disposed along the inner surface thereof, in which sealant layer is made of a rubber…
A pneumatic tire having a puncture preventive layer formed by windingly sticking a tube having seal material wrapped therein to the tire inner surface circumferentially of the tire and continuously and spirally with its side surfaces closely contacted each other: or a pneumatic tire having a…
In a sealant-containing tire, an outer liner is fastened to an inner surface of a tread of a tire body, and a sealant chamber that is filled with sealant is defined between a central part of an inner liner and an inner surface of an outer liner by fastening left and right ends of an inner liner to…