A motorcycle tyre (1) is described comprising an equatorial plane (X-X) and a tread band (8) comprising a radially inner portion (13) and a radially outer portion (11) respectively comprising a first and a second vulcanized elastomeric material obtained by vulcanizing respective elastomeric materials comprising 100 phr of at least one elastomeric diene polymer, from 30 to 130 phr of at least one reinforcing filler comprising an amount greater than 75% or, respectively, equal to or greater than 80% of a white filler. In the tyre (1) the ratio R1 between the dynamic elastic modulus (E′) and the tandelta measured at a frequency of 10 Hz and at 70° C. of the first vulcanized elastomeric material is comprised between 27 and 35, whereas the ratio R2 between the dynamic elastic modulus (E′) and the tandelta measured at a frequency of 10 Hz and at 70° C. of the second vulcanized elastomeric material is comprised between 15 and 30, the ratio R1/R2 being greater than or equal to 1.1.

The invention relates to a sulfur-crosslinkable rubber mixture and to a pneumatic vehicle tire comprising at least one rubber component made of the sulfur-vulcanized rubber mixture.

The rubber mixture contains 10-60 phr (parts by weight, based on 100 parts by weight of the total rubbers in the mixture) of at least one functionalized polybutadiene A,
wherein the functionalized polybutadiene A is functionalized at one chain end with an organosilyl group containing amino groups and/or ammonium groups,
and wherein the functionalized polybutadiene A is functionalized at the other chain end with an amino group, up to 90 phr of at least one further diene rubber and 30-350 phr of at least one filler.

A resin has a structure defined by Formula (I)

##STR00001##

wherein: (a) each R.sub.5 is independently a methylene group (CH.sub.2), or a methylene group substituted with one or more —H, —CH.sub.3, or halogen functionalities; (b) each R.sub.6 is independently a bond or a straight-chain or branched, linear or cyclic, saturated or unsaturated, substituted or unsubstituted, aliphatic or aromatic group having between 1 and 2 carbon atoms; (c) each X is independently a functionality possessing at least one non-aromatic alkene or alkyne moiety; (d) each Z is independently either H or X; (e) each Z is independently either H or X, and each p is independently an integer from 1-4; (f) each w is independently 0, or an integer greater than or equal to 1, and (i) when w is 0, the bracket region represents a bond and n is 0, or an integer greater than or equal to 1; and (ii) when n is 0, the bracket region represents a bond. The resin is especially well suited for use in a base station, circuit board, server, router, radome or satellite structure, as well as such processes as digital light printing (DLP), continuous liquid interface printing (CLIP), and Stereolithography (SL).

An article is not pneumatic tyre for a motor vehicle and the article's use are that is suitable as at least a part of a pressurizable container or pipeline. The article includes a first side that is, in use, configured to be exposed to a first environment and a second side that is, in use, configured to be exposed to a second environment. At least a part of the article includes rubber-based material that is configured to restrict fluid permeability and that includes lignin that has been treated by hydrothermal carbonization. The rubber-based material or a coating of the rubber-based material forms at least a part of the first side, and the first side is, in use, configured to be exposed to a higher pressure than the second side. A method is for manufacturing the article.

An article is not pneumatic tyre for a motor vehicle and the article's use are that is suitable as at least a part of a pressurizable container or pipeline. The article includes a first side that is, in use, configured to be exposed to a first environment and a second side that is, in use, configured to be exposed to a second environment. At least a part of the article includes rubber-based material that is configured to restrict fluid permeability and that includes lignin that has been treated by hydrothermal carbonization. The rubber-based material or a coating of the rubber-based material forms at least a part of the first side, and the first side is, in use, configured to be exposed to a higher pressure than the second side. A method is for manufacturing the article.

Disclosed is a method of preparing a graft copolymer and a method of preparing a thermoplastic resin composition including the prepared graft copolymer. Also disclosed is a method of preparing a graft copolymer including a process of adding an aromatic vinyl monomer and a vinyl cyanide monomer to a conjugated diene rubber latex that is enlarged with a polymer particle diameter control agent that has a specific glass transition temperature and an average particle diameter in a specific ratio to an average particle diameter of a conjugated diene rubber latex, and graft-polymerizing the same; and a method of preparing a thermoplastic resin composition including the prepared graft copolymer.

Also disclosed is a graft copolymer prepared using the conjugated diene rubber latex enlarged with the polymer particle diameter control agent exhibiting the synergistic effect of improving both impact strength and fluidity.

An object of the present disclosure is to provide a rubber composition from which a crosslinked rubber molded product having good softness and excellent resilience performance can be obtained. The present disclosure provides a rubber composition containing (a) a base rubber, (b) a co-crosslinking agent, (c) a crosslinking initiator, and (d) a salt of a benzothiazole derivative, wherein (d) the salt of the benzothiazole derivative includes a compound represented by the formula (1) in which a sulfur atom S.sup.2 constituting a thiocarbonyl group has a Mulliken charge of −0.190 or more.

##STR00001##

[In the formula (1), R.sup.1 to R.sup.4 are identical to or different from each other, and represent an electron-withdrawing group or a hydrogen atom, S.sup.1 and S.sup.2 represent a sulfur atom, X represents a cation component, n is an integer ranging from 1 to 4, and at least one of R.sup.1 to R.sup.4 bonding to the identical benzene ring is an electron-withdrawing group when n is 2 or more.]

An object of the present disclosure is to provide a rubber composition from which a crosslinked rubber molded product having good softness and excellent resilience performance can be obtained. The present disclosure provides a rubber composition containing (a) a base rubber, (b) a co-crosslinking agent, (c) a crosslinking initiator, and (d) a salt of a benzothiazole derivative, wherein (d) the salt of the benzothiazole derivative includes a compound represented by the formula (1) in which a sulfur atom S.sup.2 constituting a thiocarbonyl group has a Mulliken charge of −0.190 or more.

##STR00001##

[In the formula (1), R.sup.1 to R.sup.4 are identical to or different from each other, and represent an electron-withdrawing group or a hydrogen atom, S.sup.1 and S.sup.2 represent a sulfur atom, X represents a cation component, n is an integer ranging from 1 to 4, and at least one of R.sup.1 to R.sup.4 bonding to the identical benzene ring is an electron-withdrawing group when n is 2 or more.]

A polymeric composition includes a diene elastomer; an azodicarboxy compound; and a reinforcing filler comprising silica. The composition is not foamed. A method for preparing a polymeric composition includes mixing in one or more steps: a diene elastomer; an azodicarboxy compound; and a reinforcing filler. The mixing temperature is less than 160° C. in mixing steps in which the azodicarboxy compound is present. In an embodiment, the mixing temperature is kept below the decomposition temperature of the azodicarboxy compound.

A polymeric composition includes a diene elastomer; an azodicarboxy compound; and a reinforcing filler comprising silica. The composition is not foamed. A method for preparing a polymeric composition includes mixing in one or more steps: a diene elastomer; an azodicarboxy compound; and a reinforcing filler. The mixing temperature is less than 160° C. in mixing steps in which the azodicarboxy compound is present. In an embodiment, the mixing temperature is kept below the decomposition temperature of the azodicarboxy compound.