Rohm Gmbh

Hans Trabitzsch

Hermann Plainer

Horst Pennewiss

Juergen Masanek

Josef Frieser

Werner Siol

Ernst Pfleiderer

Rolf Monsheimer

Herbert Fink

Peter Quis

Norbert Suetterlin

Klaus Langerbeins

Hanns Boessler

Helmut Daum

Achim Koschik

Juergen Jakob

Hans-Dieter Blitz

Methods for providing temporary protective coatings on mechanic objects by applying thereto an aqueous emulsion of a lipophilic poly(meth)acrylate polymer predominately including esters of alcohols having at least four carbon atoms and then removing said temporary coatings when desired with an organic solvent which, with the polymer dissolved therein, is conveniently disposed of by combustion.

Acrylic protective coatings

Method for making odorless aqueous solutions of water soluble polymers

What is disclosed are a method for treating pelts or leather in the beamhouse, for tanning, or as an aftertreatment, which method comprises contacting said pelts or leather with an aqueous solution or dispersion of a copolymer comprising monomers of a nitrogenous ester of acrylic acid or of methacrylic acid, a further different ester of acrylic acid or of methacrylic acid, and acrylic acid or methacrylic acid, whereby portions of said copolymer are deposited in the grain layer without formation of a superficial film, and pelts and leather treated by this method.

Method for treating pelts and leather

What is disclosed are stable aqueous solutions, useful for example to treat water to stabilize its hardness and to render it anticorrosive or biocidal, containing a dissolved cationic component, such as polyvalent metal cation or a cationic surface active agent, and a dissolved anionic vinyl copolymer comprising both anionic monomer units having a carboxylic acid group and units of a anionic monomer having an ammonium group.

Stable aqueous solutions of certain vinyl copolymers

A method for polymerizing or copolymerizing water-soluble monomers, in a layer thickness between 2 and 100 mm, and at a temperature between 0.degree. C. and 100.degree. C., by irradiation with ultraviolet light in the presence of atmospheric oxygen, wherein the material to be polymerized contains at least 1 ppm of a water-soluble anthraquinone unsubstituted in the 1,4,5, and 8-positions and at least 10 ppm of dissolved chloride ions.

Polymerization method using ultraviolet light

Polymer dispersions in which an aqueous phase comprising a water-soluble polymer is dispersed in an organic liquid in the presence of a polymeric water-in-oil type dispersing agent containing salt-forming basic nitrogen atoms. When the dispersion is mixed with water in the presence of an acid, which acid may be present in the aqueous or organic phase of the dispersion or added separately, the dispersing agent transforms into an oil-in-water type, the previously dispersed polymer dissolves in the water, and the previously continuous organic phase is dispersed in the water. Methods of making such polymer dispersions. Methods of forming aqueous solutions of water-soluble polymers by combining such dispersions with water in the presence of an acid.

Dispersions of water-soluble polymers and methods for making and using

Growing community of inventors

Seeheim-Jugenheim, Germany

Hans Trabitzsch