Semperit Reifen Aktiengesellschaft

Semperit Aktiengellschaft

Otto Beckmann

Reinhard Teves

Helmut Loidl

Joachim Bertrand

Ernst Petraschek

A rubber mixture, in particular for the tread of a tire, based on at least one polymer that is from the group of diene rubbers and respectively contains 5 to 100 parts by weight finely distributed, precipitated silicic acid, 0 to 80 parts by weight carbon black, if need be 0.2 to 10 parts by weight silane coupling agent, and 0.5 to 20 parts by weight of at least one non-aromatic, viscosity-reducing substance with regard to 100 parts by weight rubber. The viscosity-reducing, non-aromatic substance is based exclusively on the elements carbon, hydrogen, and oxygen and has a region with at least two hydroxyl groups that exist in the form of 1,2-diol or 1,3-diol, and a region of at least two chemically bonded carbon atoms, wherein neither the chemically bonded carbon atoms nor their chemically bonded neighboring carbon atoms are substituted with oxygen.

Rubber composition, particularly for tire tread

The lamella fine cut-outs provided in profile elements of the tread surface of a tire, have three-dimensionally structured wall regions. Such wall regions restrict relative movements of the mutually facing wall regions in lateral as well as in radial direction. In such manner there are improved the travel characteristics as well as the wear characteristics like break-outs and irregular wear of such lamella tires.

Tire having a tread surface with fine cut-outs at the tire tread surface

A vulcanizable rubber mixture contains imbedded therein copper alloy based reinforcing elements and forms a durable bond to such copper alloy based reinforcing elements during vulcanization. Therefore, the vulcanizable rubber mixture has added thereto a bonding additive containing at least one monosaccharide which is selected from the group of ketoses. This bonding additive is unobjectionable particularly in toxicological terms and can be admixed and processed without problems. The thus formed vulcanized materials possesses very good characteristics with respect to moisture resistance and oxidative aging.

Vulcanizable rubber mixture, vulcanized rubber material and method of

A method of increasing the wear resistance of a vulcanized elastomeric body having a surface region exposed to load, for instance a tire, cone or V-belt, conveyor belt, hose, resilient element, floor covering or the like, by changing its tensile stress state, wherein the elastomeric body is at least partially treated, including the surface region exposed to load, with a swelling agent constituting a medium which is soluble in the elastomer.

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Traiskirchen, Austria

Otto Beckmann