Phoenix Aktiengesellschaft

Intech Thüringen Gmbh

Veritas Gummiwerke Ag

Th&uuml;ringen Gmbh

Contitech Vibration Control Gmbh

Gerhard Merkmann

Karl-Heinz Krause

Michael Bruder

Werner Schunk

Konrad Giessmann

Manfred Klerk

Gerd Lotze

Ernst-August Meier

Michail Rabkin

Hans-Josef Ludwig

Jörg Vortkort

Klaus Tubel

Wilfried Mertens

Edgar Bohm

Giancarlo Gomez-Kerber

Frank Albracht

Rolf Steinmuller

Wolfgang Timm

Janusz Muchorowski

Edgar B&ouml;hm

Klaus T&uuml;bel

Peter Schwob

A clarification basin membrane made of a polymeric, in particular, elastomeric material, which is rendered gas-permeable by a perforation, whereby a permanent gas permeability is effected by mixing a wast water biologically active inhibitor with the polymeric material.

Clarification basin membrane

The invention relates to a plaster containing an active agent, comprising at least one cover membrane and an active membrane which is based on a skin-compatible matrix containing a molecular sieve which is loaded with at least one active agent. The molecular sieve/active agent adduct releases the active agent when the active membrane comes into contact with the skin, in conjunction with the transpired water of the skin. The inventive plaster is characterised in that the molecular sieve/active agent adduct also contains water of crystallisation, to the extent that the molecular sieve is partially hydrated compared to a sufficient basic molar quantity (m) of water of crystallisation, the molecular sieve with the reduced molar quantity (m') of water of crystallisation being loaded with the active agent (Z, Z, Z) so that when the active membrane comes into contact with the skin, water is absorbed and the active agent is desorbed, whereupon the water of crystallisation content of the molecular sieve increases. The invention also relates to various suitable embodiments of the plaster containing an active agent and to an advantageous method for producing the inventive plaster containing an active agent.

Plaster containing an active agent

A medical cushion (), in particular an anti-decubitus cushion, is in particular multicellular and is distinguished in that the cushion is equipped, at least in the area where skin contact () occurs, with an active membrane () based on a skin-compatible matrix () into which a molecular sieve is mixed. This molecular sieve is charged with at least one active substance (Z, Z, Z), and the molecular sieve/active substance adduct () releases the active substance when the active membrane comes into skin contact () in conjunction with the transpiration of the skin.

Medicinal cushion, in particular anti-decubitus cushion

A rubber-based soundproofing material comprises a mixture of a rubber blend, a metal or its oxides, alloys or salts, and conventional mixing ingredients. The mixture is either a non-blended chlorobutyl rubber, bromobutyl rubber or acrylate rubber, or a blend of nitrile rubber or styrene-butadiene rubber with epoxidized natural rubber. The mixture has the following proportions: 10-15% by wt. rubber or rubber blend, 85-40% by wt. metal or its oxides, alloys or salts, and 5-10 wt. % mixing ingredients.

Rubber-based soundproofing material

The invention relates to a rail arrangement for a rail superstucture such as a fixed railroad, comprising an elastic intermediate plate ( ) which is located between the rail foot and a hard support (6) in the form of a concrete tie and has two through holes for the screws ( ) to fasten the rails. For series mounting, which is the solution of choice, the elastic intermediate plate ( ) is combined with an elastic intermediate layer ( ) in such a way that the additional intermediate layer rests above the intermediate plate directly below the rail foot, whereby the intermediate layer ( ) is separated from the intermediate plate ( ) by a metal base plate ( ) which serves to fasten the rail. According to the invention, the intermediate plate ( ) consists of a single-piece vulcanisate made of a rubber mixture and has three structural zones related to a novel arrangement of protrusions (active surfaces) and recesses (inactive surfaces), whereby the inactive surfaces in the central zone are deeper than those in the two side zones. The invention also relates to other constructional features of the elastic intermediate plate ( ).

Rail arrangement

Method of producing products from polymer materials having a

Rubber mixture for an elastic intermediate layer for a rail support

Caoutchouc mixture for the manufacture of rubber products with

Growing community of inventors

Gotha, Germany

Gerhard Merkmann