Roehm Gmbh Chemische Fabrik

Rohm Gmbh

Wilhelm Wopker

Werner Siol

Markus Parusel

Erwin Felger

Uwe Numrich

Peter J Arndt

Norbert Suetterlin

Manfred Munzer

Volker Benz

Michael Muller

Ernst Heil

Willi Tilch

Karl A Jung

Horst Puhler

Karl-Heinz Jakob

The invention relates to composites VS comprising at least two plastic layers A and C, suitable for the production of articles which, on one surface, come into contact with water at temperatures between 0.degree. and 90.degree. C., wherein the layer A, which comes into contact with water, comprises a thermoplastic, impact-resistant polymethyl methacrylate plastic SP having a Vicat softening temperature of at least 95.degree. C. according to ISO 306 procedure B and a notch impact resistance of at least 3.0 kJm.sup.-2 according to ISO 180 1A, and layer C comprises an impact-resistant acrylonitrile-styrene copolymer VP. In a preferred specific embodiment of the invention, another layer B, made of a thermoplastic polymethyl methacrylate plastic P, is placed between layers A and C.

Heat resistant composite laminate

The invention relates to a method of manufacturing monodisperse poly(meth)acrylates by the method of precipitation polymerization, comprising polymerizing

Method of manufacturing monodisperse poly(meth)acrylate particles

Method of manufacturing monodisperse poly (meth) acrylate particles

Flame retardant molding compounds comprising polymers of methyl methacrylate having an average molecular weight between 1.times.10.sup.5 and 2.times.10.sup.5, which molding compounds contain from 8 to 15 weight percent of at least one chloroalkylphosphoric acid ester of the formula ##STR1## wherein R.sub.1 is alkyl or ##STR2## and R.sub.2 is hydrogen, methyl, ethyl, or chloro-substituted methyl or ethyl.

Flame retardant polymethyl methacrylate molding compound

An emulsion polymer comprising a hard nonelastomeric core, an elastomeric intermediate stage produced in the presence of the core and essentially composed of an acrylic ester and a crosslinking monomer which contains three or more acrylic or methacrylic groups in the molecule, and a hard nonelastomeric final stage produced in the presence of the elastomeric intermediate stage and crosslinked therewith, said polymer being useful as an impact strength modifying agent which, in admixture with a thermoplastic polymethyl methacrylate molding compound for example, yields molded articles exhibiting reduced susceptibility to stress whitening and improved impact strength.

Emulsion polymers for modifying impact strength

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Bickenbach, Germany

Wilhelm Wopker