The invention relates to benzothiazole-containing silanes of the formula I ##STR00001##
which are prepared by reacting benzothiazole-containing silanes of the formula II ##STR00002##
with a compound of formula III
R.sup.2—H  (III). The benzothiazole-containing silanes of the formula I can be used in rubber mixtures.

A rubber composition for vibrationproof rubber is disclosed in which when a total amount of one or more rubber components is regarded as 100 parts by mass, a solution-polymerized styrene butadiene rubber is included in an amount of 85 to 100 parts by mass. This solution-polymerized styrene butadiene rubber is a rubber in which an amount-proportion of styrene is from 10 to 45% by mass, and an amount-proportion of vinyl is from 30 to 65% by mass. The solution-polymerized styrene butadiene rubber is preferably a modified solution-polymerized styrene butadiene rubber. When the total amount of rubber components is regarded as 100 parts by mass, the solution-polymerized styrene butadiene rubber is preferably included therein in an amount of 90 to 100 parts by mass. A carbon black is preferably included therein in an amount of 30 to 100 parts by mass for the same 100 parts by mass.

A rubber composition for vibrationproof rubber is disclosed in which when a total amount of one or more rubber components is regarded as 100 parts by mass, a solution-polymerized styrene butadiene rubber is included in an amount of 85 to 100 parts by mass. This solution-polymerized styrene butadiene rubber is a rubber in which an amount-proportion of styrene is from 10 to 45% by mass, and an amount-proportion of vinyl is from 30 to 65% by mass. The solution-polymerized styrene butadiene rubber is preferably a modified solution-polymerized styrene butadiene rubber. When the total amount of rubber components is regarded as 100 parts by mass, the solution-polymerized styrene butadiene rubber is preferably included therein in an amount of 90 to 100 parts by mass. A carbon black is preferably included therein in an amount of 30 to 100 parts by mass for the same 100 parts by mass.

A vulcanized rubber is formed by a method comprising blending a halogenated unsaturated polymer into a rubber comprised of cis 1-4 polyisoprene to form a vulcanizable polymer blend, adding a vulcanization material to the vulcanizable polymer blend, and vulcanizing the vulcanizable polymer blend to form a homogeneous vulcanized rubber. The method may be used to form a vulcanized rubber comprised of polyisoprene uniformly crosslinked with a halogenated unsaturated polymer that is a reaction product of (i) an unsaturated polymer miscible with polyisoprene and having conjugated dienes that undergo a Diels Alder reaction and (ii) a polyhalogenated cyclopentadiene.

A vulcanized rubber is formed by a method comprising blending a halogenated unsaturated polymer into a rubber comprised of cis 1-4 polyisoprene to form a vulcanizable polymer blend, adding a vulcanization material to the vulcanizable polymer blend, and vulcanizing the vulcanizable polymer blend to form a homogeneous vulcanized rubber. The method may be used to form a vulcanized rubber comprised of polyisoprene uniformly crosslinked with a halogenated unsaturated polymer that is a reaction product of (i) an unsaturated polymer miscible with polyisoprene and having conjugated dienes that undergo a Diels Alder reaction and (ii) a polyhalogenated cyclopentadiene.

A reinforced product, which can be used especially for reinforcing a finished rubber article, comprises one or more textile or metallic reinforcing thread(s), said thread(s) being covered with a sheath comprising a thermoplastic polymer composition, the sheathed thread(s) being themselves embedded in a rubber composition referred to as coating rubber, characterized in that this coating rubber is a composition based on at least one diene elastomer, silica as predominant reinforcing filler, and a sulfur-based vulcanization system, in which the ratio of the amounts, in phr (parts by weight per hundred parts by weight of elastomer), of sulfur and of reinforcing filler, is less than 0.08.

A reinforced product, which can be used especially for reinforcing a finished rubber article, comprises one or more textile or metallic reinforcing thread(s), said thread(s) being covered with a sheath comprising a thermoplastic polymer composition, the sheathed thread(s) being themselves embedded in a rubber composition referred to as coating rubber, characterized in that this coating rubber is a composition based on at least one diene elastomer, silica as predominant reinforcing filler, and a sulfur-based vulcanization system, in which the ratio of the amounts, in phr (parts by weight per hundred parts by weight of elastomer), of sulfur and of reinforcing filler, is less than 0.08.

Provided is a pneumatic tire having well-improved fuel economy, rubber tensile strength, and abrasion resistance while maintaining adequate productivity. The present invention relates to a pneumatic tire formed from a rubber composition, the rubber composition containing a hydrogenated copolymer and a sulfur donor, the hydrogenated copolymer containing a structural unit derived from an aromatic vinyl compound and a structural unit derived from a conjugated diene compound and having a degree of hydrogenation of the conjugated diene portion of 75 mol % or more, the hydrogenated copolymer being present in an amount of 75% by mass or more based on 100% by mass of a rubber component in the rubber composition, the sulfur donor being present in an amount of 0.2 to 8 parts by mass per 100 parts by mass of the rubber component.

Provided is a pneumatic tire having well-improved fuel economy, rubber tensile strength, and abrasion resistance while maintaining adequate productivity. The present invention relates to a pneumatic tire formed from a rubber composition, the rubber composition containing a hydrogenated copolymer and a sulfur donor, the hydrogenated copolymer containing a structural unit derived from an aromatic vinyl compound and a structural unit derived from a conjugated diene compound and having a degree of hydrogenation of the conjugated diene portion of 75 mol % or more, the hydrogenated copolymer being present in an amount of 75% by mass or more based on 100% by mass of a rubber component in the rubber composition, the sulfur donor being present in an amount of 0.2 to 8 parts by mass per 100 parts by mass of the rubber component.

A peer to peer dynamic network acceleration method and apparatus provide enhanced communications directly between two or more enhanced devices, such as enhanced clients. The enhanced clients may comprise a front-end, a back-end, or both. In general, the front-end and back-end of the enhanced clients work in concert to translate data into an enhanced protocol for communication between the enhanced clients. The enhanced protocol may provide acceleration, security, error correction, and other benefits. Data from various applications may be seamlessly translated between a first protocol and the enhanced protocol, such that the applications need not be modified to use the enhanced protocol. The enhanced clients may automatically detect one another to establish an enhanced communications channel automatically.