Abstract: The present invention relates to a polymer electrolyte membrane for fuel cells, comprising a polymer matrix of at least one basic polymer and one or more doping agents, wherein particles containing ionogenic groups and having a mean particle diameter in the nanometer range are embedded in the polymer matrix and the particles containing ionogenic groups are distributed homogeneously in the polymer matrix in a concentration of less than 50% relative to the weight of the polymer matrix, as well as to the production and use of same, especially in high-temperature fuel cells.

Abstract: The present invention relates to a process for producing rubber mixtures, to the rubber mixtures obtainable by the process, to the use of rubber mixtures for producing tires or semi-finished products for tires and crosslinked elastomer molded articles which are obtained by vulcanization of the rubber mixtures produced according to the present invention.

Abstract: The present invention relates to sulfur-vulcanizable silica-containing rubber compounds with improved processability and a process for their production.

Abstract: The present invention relates to the invention of a masticating agent for the mastication of natural and synthetic rubbers, wherein the masticating agent is a dialkyl polysulfide, which is toxicologically acceptable and has very good masticating properties.

Abstract: The invention relates to rubber compounds based on rubber particles and phosphoryl polysulfides, as well as to vulcanizates or shaped articles prepared therefrom. The addition of phosphoryl polysulfides improves the strengthening effect of the rubber particles and the level of the mechanical properties, without lowering the resilience of the vulcanizates prepared therefrom.

Abstract: This invention relates to a process for the production of dithiophosphoric acid poly-sulfide mixtures, which is characterized in that dithiophosphoric acid disulfides are reacted with sulfur at elevated temperatures. The dithiophosphoric acid polysulfide mixtures produced using the process according to the present invention are used as sulfur donors for the vulcanization of natural and synthetic rubbers and in the latex vulcanization of natural and synthetic rubber latex.

Abstract: The present invention relates to vulcanizable rubber mixes which, apart from the rubbers, contain O,O-bis-(alkyl)-dithiophosphoric acid polysulfides and primary and/or secondary amines, which are characterized in that they may be vulcanized without release of nitrosamines with a high crosslink density and a high proportion of short sulfur bridges.

Abstract: The present invention concerns new organic silicon networks, their production process and use in silica-containing rubber compounds and vulcanizates manufactured from them.

Abstract: An apparatus for providing a pasty or liquid- to cream-like substance comprises a container, in which a relatively large supply of the substance is stored, and a closure and dispensing element, which closes a delivery opening of the container. On the one hand, the closure and dispensing element is used for retaining the substance stored in the container, and on the other hand for dispensing a small amount of this substance upon contact of the closure and dispensing element with a surface to be wetted. The closure and dispensing element is designed to be planar and is equipped with openings arranged in a grid-like manner.

Abstract: An apparatus for providing a pasty or liquid- to cream-like substance comprises a container, in which a relatively large supply of the substance is stored, and a closure and dispensing element, which closes a delivery opening of the container. On the one hand, the closure and dispensing element is used for retaining the substance stored in the container, and on the other hand for dispensing a small amount of this substance upon contact of the closure and dispensing element with a surface to be wetted. The closure and dispensing element is designed to be planar and is equipped with openings arranged in a grid-like manner.