A heavy duty pneumatic tire comprises an innerliner including a laminated first liner and second liner; a thickness of the first liner being 1.2 to 1.9 mm; a thickness of the second liner being 1.2 to 1.6 mm; a total thickness of the first and second liners being 2.4 to 3.4 mm; the first and second liners being made of rubber compositions 1 and 2; rubber composition 1 containing 5 to 50 parts by weight of a plate-like inorganic filler having a particle size of 4.9 to 7.5 μm and an aspect ratio of 3.0 to 7.0 per 100 parts by weight of a diene rubber containing 50 to 100 wt. % of butyl rubber; and rubber composition 2 containing 0.05 to 0.5 parts by weight of an organic metal salt as metal content per 100 parts by weight of a diene rubber containing at least 50 wt. % of natural rubber.

Provided is a tire that prevents a polyurethane foam layer from discoloring to brown. A tire comprises: a polyurethane foam layer laminated on an outer layer of the tire with a barrier layer therebetween, wherein the polyurethane foam layer contains a polyurethane foam, and the barrier layer is formed from a rubber composition containing butyl rubber as a rubber component.

Provided is a tire that prevents a polyurethane foam layer from discoloring to brown. A tire comprises: a polyurethane foam layer laminated on an outer layer of the tire with a barrier layer therebetween, wherein the polyurethane foam layer contains a polyurethane foam, and the barrier layer is formed from a rubber composition containing butyl rubber as a rubber component.

Provided is a sealant material 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 material composition constituting a sealant layer (10) disposed in an inner surface of a pneumatic tire, a sealant material composition in which a proportion (A) of toluene insoluble occupying the sealant material composition is from 30 mass % to 60 mass % is used, or a sealant material composition in which a ratio (d1/d2) of measured specific gravity (d1) of the sealant material composition measured by an underwater replacement method to calculated specific gravity (d2) of the sealant material composition calculated from specific gravity and a blended amount of each raw material in the sealant material composition is from 0.7 to 0.9 is used.

Halogenated butyl rubbers are provided comprising lignins and co-reinforcing agents, where the ratio of the lignin to the co-reinforcing agent is selected so as to effectively modulate advantageous properties of the vulcanizate. The advantageous properties are achieved when using a ratio of lignin to the co-reinforcing agent, such as carbon black or silica, that is higher than in a reference vulcanizate, in effect the substitution of lignin for conventional reinforcing agents improves the reinforcement of the vulcanizates.

Halogenated butyl rubbers are provided comprising lignins and co-reinforcing agents, where the ratio of the lignin to the co-reinforcing agent is selected so as to effectively modulate advantageous properties of the vulcanizate. The advantageous properties are achieved when using a ratio of lignin to the co-reinforcing agent, such as carbon black or silica, that is higher than in a reference vulcanizate, in effect the substitution of lignin for conventional reinforcing agents improves the reinforcement of the vulcanizates.

A moisture curable composition, and a method of application and a substrate including the same are disclosed herein. In some embodiments, a curable composition includes a component (A) comprising an organic polymer containing reactive silicon groups represented by the general formula (1), a component (B) comprising an organic polymer having a viscosity lower than 10,000 cP at 23° C. containing reactive silicon groups represented by the general formula (2), and a component (C) comprising a polyolefin polymer. The moisture curable composition has universal adhesiveness to an adhesion-resistant substrate, such as PVC, EPDM, and TPO. The substrates can be smooth-back or fleece-back substrates.

A moisture curable composition, and a method of application and a substrate including the same are disclosed herein. In some embodiments, a curable composition includes a component (A) comprising an organic polymer containing reactive silicon groups represented by the general formula (1), a component (B) comprising an organic polymer having a viscosity lower than 10,000 cP at 23° C. containing reactive silicon groups represented by the general formula (2), and a component (C) comprising a polyolefin polymer. The moisture curable composition has universal adhesiveness to an adhesion-resistant substrate, such as PVC, EPDM, and TPO. The substrates can be smooth-back or fleece-back substrates.

A conduit, particularly flexible conduit comprises an inner tubular housing, at least one reinforcing layer at least partially disposed around the inner housing, an outer protective sheath at least partially disposed around the at least one reinforcing layer, and optionally a thermally insulating layer disposed between the at least one reinforcing layer and the outer protective sheath. At least one of the outer protective sheath and the thermally insulating layer comprises a thermoplastic vulcanizate composition.

A pneumatic tire includes an innerliner and a tie rubber. A rubber composition for an innerliner constituting the innerliner includes from 25 to 75 parts by mass of a carbon black having a nitrogen adsorption specific surface area from 25 to 95 m.sup.2/g, from 1 to 13 parts by mass of a resin, and from 0.1 to 1.8 parts by mass of zinc oxide, per 100 parts by mass of a diene rubber containing from 50 to 100 parts by mass of halogenated butyl rubber, and the dynamic storage modulus at −45° C. of the rubber composition is not greater than 600 Mpa.