Continental Reifen Deutschland Gmbh

Continental Aktiengesellschaft

Norbert Mueller

Carla Recker

Viktoria Pavon Sierra

Catarina Sa

Kathrin Wehming-Bomkamp

Michael Radke

Julia Schoeffel

Katharina Herzog

David-Raphael Dauer

Andreas Jacob

Thorsten Torbruegge

Norbert Kendziorra

Julian Strohmeier

Kirsten Schwekendiek

Juergen Wagemann

Thomas Kramer

William Michael York

Heiner Volk

Boris Mergell

Nils Hojdis

Hajo Weinreich

Christine Weber

Fabian Schax

Christian Struebel

Gesa Tarantola

Casper Van De Pol

Jürgen Wagemann

Catarina Sá

Christoph Vatterott

Anette Stark

Viktoriya Tkachenko

The invention relates to a rubber blend, to a sulfur-crosslinkable rubber mixture comprising the rubber blend and to a vehicle tire comprising such a rubber mixture. The rubber blend comprises

Rubber blend, sulfur-crosslinkable rubber mixture, and vehicle tire

The invention relates to a process for preparing a silane, to a process for modifying a silica with the silane, and to a modified silica. The process for preparing a silane of the formula I) comprises at least the following steps:

Method for producing a silane, method for modifying a silica with the silane, and modified silica

The invention relates to a sulfur-crosslinkable rubber mixture comprising

The invention relates to a rubber blend, to a sulfur-crosslinkable rubber mixture comprising the rubber blend and to a vehicle tire comprising such a rubber mixture. The rubber blend comprises at least one solution-polymerized diene polymer A of high molecular weight and at least one solution-polymerized polymer B of low molecular weight, wherein at least one of polymers A and B has been functionalized at the chain end and/or along the polymer chain and/or at a coupling site with at least one group selected from epoxy groups, hydroxyl groups, carboxyl groups, silane sulfide groups, amino groups, siloxane groups, organosilicon groups, phthalocyanine groups and amino group-containing alkoxysilyl groups and wherein the rubber blend includes 35 to 100 phr (based on the at least one solution-polymerized diene polymer A of high molecular weight), preferably 35 to 70 phr, of the at least one solution-polymerized polymer B of low molecular weight.

The invention relates to a sulfur-crosslinkable rubber mixture, to a vulcanizate thereof and to a vehicle tire. The sulfur-crosslinkable rubber mixture contains at least the following constituents:

Sulfur-crosslinkable rubber mixture, vulcanizate of the rubber mixture, and vehicle tire

Sulfur-crosslinkable rubber mixture, vulcanizate of the rubber mixture, and vehicle tyre

The invention relates to a silane, to a rubber mixture comprising the silane and to a vehicle tire comprising the rubber mixture in at least one component. The inventive silane has the following formula I)(R)Si&#x2014;R&#x2014;X-A-Y-[A-Y-]-A-S-A-[-Y-A]Y-A-X&#x2014;R&#x2014;Si(R),wherein, according to the invention, the silane has spacer groups between the respective silyl groups and the Smoiety which have at least two aromatic groups A and the linking units X and Y, wherein the groups X within a molecule may be identical or different from each other and are selected from the groups &#x2014;HNC(&#x2550;O)&#x2014;, &#x2014;C(&#x2550;O)NH&#x2014;, &#x2014;C(&#x2550;O)O&#x2014;, &#x2014;OC(&#x2550;O)&#x2014;, &#x2014;OC(&#x2550;O)NH&#x2014;, The inventive rubber mixture comprises at least one inventive silane.

Silane, rubber mixture containing the silane and vehicle tyre having the rubber mixture in at least one component

A pneumatic vehicle tire for passenger cars, vans or the like has a radial carcass, a multi-ply belt, and a profiled tread that, as viewed in the axial direction, has a central portion and two shoulder portions. The shoulder portions include a rubber mixture that has a lower dynamic modulus of elasticity E' (at 55&#xb0; C. and 8% elongation according to DIN 53513) than the central portion. The central portion has extensions at the base thereof, running laterally substantially parallel to the tread substructure and radially inside and across the width of the shoulder portions.

Pneumatic vehicle tire

Disclosed are sulfur-crosslinkable rubber mixtures that can be incorporated into treads of vehicle tires, and vehicle tires comprising the disclosed sulfur-crosslinkable rubber mixtures. The rubber mixtures comprise: at least one diene rubber, at least one silica, at least one hydrocarbon resin, and 1 to 40 phr of at least one liquid polybutadiene having terminal organosilicon modification and having a weight-average molecular weight Mw by GPC of 500 to 12 000 g/mol.

Rubber mixture and vehicle tires

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 (T) according to DSC of &#x2212;75 to &#x2212;120&#xb0; 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.

Sulfur-crosslinkable rubber mixture

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 Mof 100,000 to 5,000,000 g/mol and a liquid butadiene rubber with an average molecular weight Mof 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.

Rubber blend with improved rolling resistance behavior

A rubber mixture with improved abrasion with improved abrasion performance, in particular for pneumatic tires, has the following composition: from 30 to 100 phr of at least one diene rubber; from 0.1 to 10 phr of at least one vulcanization accelerator selected from the group consisting of: thiazole accelerators, mercapto accelerators, sulfenamide accelerators, guanidine accelerators, thiuram accelerators, dithiocarbamate accelerators, amine accelerators, thioureas, and/or other accelerators; and a vulcanization system of sulfur comprising elemental sulfur, sulfur donor and silane between 0.25 and 0.08 moles per 100 parts by weight of the rubber elastometer, whereby the free sulfur contributes in the range of 0 to 70%, the sulfur donor contributes in the range of 5 to 30%, and the silane contributes in the range of 20 to 95%.

Growing community of inventors

Nienhagen, Germany

Norbert Mueller