Bayer Aktiengesellschaft

Karl Otto Braun Kg

Wolfram Mayer

Hans Rudolph

Roland Richter

Hanns P Muller

Hans J Rosenkranz

Christian Wegner

Gottfried Schneider

Kuno Wagner

Wulf Von Bonin

Ulrich Von Gizycki

Bernhard Jansen

Manfred Schonfelder

Dietmar Schapel

Fritz Mietzsch

Eckhard De Cleur

Heinrich Wolfers

Gunter Langen

Karl-Ernst Schuster

Karl-Ernst Shuster

Dietmar Schaepel

Hans-Uwe Lanzke

Dietmar Strache

Willy Leyser

In a construction material comprising a flexible carrier substrate impregnated or coated with a water-hardening resin, the resin contains as an additive polyether polysiloxane polyurethanes of the formula ##STR1## in which R.sup.1 is lower alkyl,

Water-hardening polymer preparations

Textile sheet-like structure impregnated or coated with water-hardening synthetic resin, said textile comprising organic fibers with an elasticity modulus of 200 to 2500 daN/mm.sup.2 and having an extensibility in the longitudinal direction of at least 10% before hardening of said resin is useful in preparing orthopaedic support dressings, containers, filters, pipes, reinforcing material, stiffening material, filler or sealer material for hollow spaces or joints, insulating material, in preparing decorative and artistic articles.

Textile sheet-like structure with reactive resin

A stiff, water resistant laminated medical or veterinary dressing is described along with a procedure for forming the final hardened dressing. The dressing is obtained by treating a gypsum bandage with an aqueous dispersion of a synthetic resin and then forming a layer from it which is immediately adjacent to a layer formed from a water hardenable synthetic resin bandage. Either layer may be formed first and further layers may be formed so long as the layers alternate between those formed from wraps of the gypsum bandages and those formed from wraps of the synthetic resin bandage.

Laminated dressing

The invention relates to a self-hardening material for supporting bandages which is packaged with exclusion of moisture and consists of an air-permeable, flexible carrier material which is impregnated and/or coated with a compound possessing at least 2 NCO groups. The self-hardening material has a greatly improved shelf life by being stored substantially oxygen-free in an air-tight pack.

Moisture-hardenable bandaging materials

In a dressing material for the production of fixed dressings, comprising a raschel knit fabric carrier coated and/or impregnated with a resin which hardens in the presence of moisture and contains isocyanate groups, the improvement wherein the raschel fabric construction is such that the ratio of the mean distance between two warp threads to the mean distance between two weft threads is less than about 1.5.

Polyurethane fixed dressings which harden in the presence of moisture

Substituted tartaric acids and tartaric acid derivatives have proved to be highly reactive initiators for starting radical polymerization resp. hardening reactions of unsaturated compounds and mixtures of compounds, particularly unsaturated polyester resins.

Radical polymerization in the presence of substituted tartaric acid or

Compounds added to initiate photopolymerization of monomers to produce polymeric coatings include compounds of the formula ##STR1## wherein Ar is phenyl or naphthyl,

Aryl-glyoxyloyloxyalkylacrylates

This invention relates to new ammonium salts of .alpha.-ketocarboxylic acids, to their use for the production of amines in situ by photochemical decomposition and to photochemically hardenable coating compositions containing these ammonium salts.

Ammonium salts of .alpha.-ketocarboxylic acids

Aryl-glyoxyloyloxyalkylacrylates and their use in photopolymerizable

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Krefeld, Germany

Wolfram Mayer