Abstract: A sulfur-crosslinkable rubber mixture, in particular for pneumatic vehicle tires, straps, belts, and hoses, is disclosed which exhibits, among other things, improved rolling resistance behavior. The rubber mixture contains at least the following constituents: 5 to 95 phr of at least one styrene-butadiene rubber, which is functionalized with phthalocyanine groups and/or hydroxy groups and/or epoxy groups and/or silane-sulfide groups and the styrene content of which is 0 to 12 wt % and which has a glass transition temperature (Tg) according to DSC of ?75 to ?120° C. in the unvulcanized state, 5 to 95 phr of at least one further rubber, and 20 to 300 phr of at least one silica.

Abstract: A rubber mixture for vehicle tires which exhibits improved rolling resistance behavior and improved wear properties. The rubber mixture includes: 5 to 100 phr of at least one polymer A of the formula I): 1) F-(P-Y-P-Sx)z-P-Y-P-F, wherein S is sulfur, P is an elastomer polymer chain obtained by the anionic polymerization of a conjugated diene and, optionally, a vinyl aromatic compound in the presence of a diinitiator, Y is a dicarbanion group derived from the diinitiator, x is an integer greater than or equal to 1 independently for each Sx group, on the condition that x is selected from the numbers 2, 3, and 4 for at least one Sx group, z is an integer from 1 to 160, each F is a terminal group independently selected from —H, —SH, —SOH, —SCl, —SO2H and —SO3H, and at least one filler.

Abstract: A process for regenerating sulfur-crosslinked rubber vulcanizates to regenerates, wherein at least one regenerating agent is used in the regeneration. The regenerating agent is selected from the group consisting of dithiophosphoryl polysulfides and/or silanes having a polysulfane group. Regenerates which have been produced by means of the process lead to improved or equal rolling resistance indicators and a lower compression set in vulcanized rubber mixtures compared to regenerates known in the prior art.

Abstract: A sulfur-crosslinkable rubber blend which includes from 60 to 100 phr of at least one butadiene rubber and 51 phr or more of at least one hydrocarbon resin which is built up to the extent of 30 to 100 wt. % from aromatic monomers. In some aspects the sulfur-crosslinkable rubber has from 51 to 300 phr of the at least one hydrocarbon resin which is built up to the extent of 30 to 100 wt. % from aromatic monomers, and in some cases, the hydrocarbon resin is built up to the extent of 30 to 100 wt. % from at least one aromatic monomer from the group consisting of alpha-methylstyrene and/or styrene and/or vinyltoluene and/or indene and/or coumarone and/or methylindene and/or methylcoumarone.

Abstract: The invention relates to a sulfur-crosslinkable rubber mixture, in particular for treads of vehicle tires, and to a vehicle tire. The rubber mixture contains at least the following components: at least one diene rubber and 10 to 200 phr of at least one silicic acid and 2 to 20 phf of at least one silane having general empirical formula I) [(R1)3Si—X]mSn(R2)2-m, wherein the residues R1 within a molecule can be the same or different and are alkoxy groups having 1 to 10 carbon atoms or cyclic dialkoxy groups having 2 to 10 carbon atoms or cycloalkoxy groups having 4 to 10 carbon atoms or phenoxy groups or aryl groups having 6 to 20 carbon atoms or alkyl groups having 1 to 10 carbon atoms or alkenyl groups having 2 to 20 carbon atoms or aralkyl groups having 7 to 20 carbon atoms or halides and wherein X is a polar organic group containing urea and wherein m assumes the value 1 or 2 and wherein n is an integer from 1 to 8 and wherein R2 is a hydrogen atom or an acyl group having 1 to 20 carbon atoms.

Abstract: A rubber mixture for vehicle tires which exhibits improved rolling resistance behavior and improved wear properties. The rubber mixture includes: 5 to 100 phr of at least one polymer A of the formula I): 1) F-(P-Y-P-Sx)z-P-Y-P-F, wherein S is sulfur, P is an elastomer polymer chain obtained by the anionic polymerization of a conjugated diene and, optionally, a vinyl aromatic compound in the presence of a diinitiator, Y is a dicarbanion group derived from the diinitiator, x is an integer greater than or equal to 1 independently for each Sx group, on the condition that x is selected from the numbers 2, 3, and 4 for at least one Sx group, z is an integer from 1 to 160, each F is a terminal group independently selected from —H, —SH, —SOH, —SCl, —SO2H and —SO3H, and at least one filler.

Abstract: A sulfur-crosslinkable rubber mixture includes from 40 to 100 phr of at least one natural and/or synthetic polyisoprene, and 15 phr or more of at least one hydrocarbon resin which is built up to the extent of 50 to 100 wt. % from aliphatic C5 monomers and to the extent of 0 to 50 wt. % from further monomers, where the hydrocarbon resin according to formula I) has a Q of from 0.015 [° C.·mol/g] to 0.050 [° C.·mol/g]. Formula I) is defined as Q=softening point [° C.]/centrifuge average Mc [g/mol]. In some aspects, the sulfur-crosslinkable rubber mixture includes 15 to 300 phr of the hydrocarbon resin, or even from 36 to 100 phr of the hydrocarbon resin. The further monomer(s) is or are selected from the group of unsaturated compounds, which can be polymerized cationically, which includes aromatics and/or unsaturated terpenes and/or alkenes and/or cycloalkenes.

Abstract: A sulfur-crosslinkable rubber blend which includes from 60 to 100 phr of at least one butadiene rubber and 51 phr or more of at least one hydrocarbon resin which is built up to the extent of 30 to 100 wt. % from aromatic monomers. In some aspects the sulfur-crosslinkable rubber has from 51 to 300 phr of the at least one hydrocarbon resin which is built up to the extent of 30 to 100 wt. % from aromatic monomers, and in some cases, the hydrocarbon resin is built up to the extent of 30 to 100 wt. % from at least one aromatic monomer from the group consisting of alpha-methylstyrene and/or styrene and/or vinyltoluene and/or indene and/or coumarone and/or methylindene and/or methylcoumarone.

Abstract: A sulfur-crosslinkable rubber mixture, in particular for vehicle tires, belts, straps and tubes is disclosed. The rubber mixture contains at least the following constituents: 50 to 95 phr of at least one solution-polymerized styrene-butadiene rubber which is amino-functionalized and has a styrene content of 0.1 to 12% by weight and which, when unvulcanized, has a glass transition temperature of ?75 to ?120° C. when measured by DSC, and 5 to 95 phr of at least one additional rubber and 20 to 150 phr of at least one carbon black.

Abstract: A sulfur-crosslinkable rubber mixture, in particular for pneumatic vehicle tires, straps, belts, and hoses, is disclosed which exhibits, among other things, improved rolling resistance behavior. The rubber mixture contains at least the following constituents: 5 to 95 phr of at least one styrene-butadiene rubber, which is functionalized with phthalocyanine groups and/or hydroxy groups and/or epoxy groups and/or silane-sulfide groups and the styrene content of which is 0 to 12 wt % and which has a glass transition temperature (Tg) according to DSC of ?75 to ?120° C. in the unvulcanized state, 5 to 95 phr of at least one further rubber, and 20 to 300 phr of at least one silica.

Abstract: A sulfur-crosslinkable rubber mixture for pneumatic tires is disclosed. The rubber mixture includes at least one diene rubber and 10 to 200 phr of at least one silica and 2 to 20 phf of at least one silane having the general empirical formula (I) [(R1)3Si—X]mSn(R2)2-m. The R1 radicals within a molecule may be the same or different and are alkoxy groups having 1 to 10 carbon atoms or cyclic dialkoxy groups having 2 to 10 carbon atoms or cycloalkoxy groups having 4 to 10 carbon atoms or phenoxy groups or halides, and where m assumes the value of 1 or 2 and where n is an integer from 1 to 8 and where R2 is a hydrogen atom or an acyl group having 1 to 20 carbon atoms and where X is an organic spacer group having 3 to 30 carbon atoms and containing at least one organic radical.

Abstract: A pneumatic vehicle tire has a radial carcass, a sulfur-impregnated rubber mixture which contains 70 to 100 phr (parts per weight related to 100 parts per weight of the entire types of rubber in the mixture) of natural rubber, up to 30 phr of at least one polybutadiene, up to 15 phr of at least one soot, 20 to 100 phr of at least one silica, at least one silane coupling agent and one adhesive system. In order to lengthen the service life of the pneumatic vehicle tire, the rubber mixture is the carcass rubber coating and the silica has a CTAB number according to ASTM D 3765 of more than 100 m2/g.

Abstract: A sulfur-crosslinkable rubberizing mixture for strengthening elements in motor vehicle pneumatic tires comprises 70 to 100 phr (parts by weight, based on 100 parts by weight of total rubbers in the mixture) of natural rubber, up to 30 phr of at least one polybutadiene, 40 to 70 phr of at least one carbon black and a bonding system. Further, motor vehicle pneumatic tires are disclosed that comprise the sulfur-crosslinked rubberizing mixture. The key conflict between tear propagation resistance, stiffness and heat build-up is solved by virtue of the carbon black being a nanostructured carbon black with a rough surface.

Abstract: A sulfur-crosslinkable rubberizing mixture for strengthening elements in motor vehicle pneumatic tires comprises 70 to 100 phr (parts by weight, based on 100 parts by weight of total rubbers in the mixture) of natural rubber, up to 30 phr of at least one polybutadiene, up to 15 phr of at least one carbon black, 20 to 100 phr of at least one high-dispersibility silica, at least one silane coupling agent and a bonding system. The invention further relates to motor vehicle pneumatic tires comprising the sulfur-crosslinked rubberizing mixture. For improved resistance to cracking and growth of cracks with good adhesion and good mechanical and dynamic properties, the high-dispersibility silica has a CTAB number to ASTM D 3765 of more than 130 m2/g.

Abstract: A rubber blend, particularly for pneumatic vehicle tires, harnesses, straps and hoses. The rubber blend includes at least one rubber blend A of a solid styrene-butadiene rubber with an average molecular weight Mn of 100,000 to 5,000,000 g/mol and a liquid butadiene rubber with an average molecular weight Mn of 500 to 9000 g/mol, wherein the styrene-butadiene rubber is solution-polymerized or emulsion-polymerized, as well as 30 to 300 phr of at least one silicic acid and further blend components.

Abstract: A sulfur-crosslinkable rubberizing mixture for strengthening elements in motor vehicle pneumatic tires comprises 70 to 100 phr (parts by weight, based on 100 parts by weight of total rubbers in the mixture) of natural rubber, up to 30 phr of at least one polybutadiene, 40 to 70 phr of at least one carbon black and a bonding system. Further, motor vehicle pneumatic tires are disclosed that comprise the sulfur-crosslinked rubberizing mixture. The key conflict between tear propagation resistance, stiffness and heat build-up is solved by virtue of the carbon black being a nanostructured carbon black with a rough surface.

Abstract: A process for regenerating sulfur-crosslinked rubber vulcanizates to regenerates, wherein at least one regenerating agent is used in the regeneration. The regenerating agent is selected from the group consisting of dithiophosphoryl polysulfides and/or silanes having a polysulfane group. Regenerates which have been produced by means of the process lead to improved or equal rolling resistance indicators and a lower compression set in vulcanized rubber mixtures compared to regenerates known in the prior art.

Abstract: A pneumatic tire for a commercial vehicle with a tread, wherein at least the part of the tread which comes into contact with the road contains a sulphur-vulcanized rubber mixture. The sulphur-vulcanized rubber mixture contains 90 to 50 phr (parts by weight, based on 100 parts by weight, of all of the rubbers in the mixture) of natural rubber, 10 to 50 phr of at least one polybutadiene having a glass transition temperature Tg of ?110 to ?65° C. and 5 to 50 phr of at least one aliphatic and/or aromatic hydrocarbon resin having a softening point (ring and ball to ASTM E 28) of 0 to 150° C., and a mean molecular weight Mn of less than 2000 g/mol and a polydispersity D=Mw/Mn of 1 to 5.

Abstract: A valve body for a snap-in valve of a vehicle wheel includes a valve stem having a valve core and a jacket-shaped body connected fixedly to the valve stem having the valve core. The body is formed of a rubber mixture containing chloroprene rubber. A snap-in valve having the valve body is also provided.

Abstract: A process for producing polymer-functionalized filler particles and polymer-functionalized filler particles obtained by this process. The polymer-functionalized filler particles are used as additives for rubber mixtures. The polymers for functionalizing the filler particles are obtained in-situ starting from filler particles having a surface-bound RAFT agent. The binding of silyl-bearing RAFT agents and of Diels-Alder RAFT agents occurs via the R-group and the subsequent RAFT polymerization proceeds via a reactive site of the RAFT agent.