Rohm Gmbh

Rohm Gmbh Chemische Fabrik

Roehm Gmbh Chemical Factory

Thomas Sufke

Werner Siol

Jens-Dieter Fischer

Erwin Felger

Klaus Frank

Klaus Lehmann

Heinz Gross

Thomas Rhein

Coatings and binders for pharmaceutical forms containing a copolymerizate, wherein the copolymerizate is made up of:

Coating and binder for pharmaceutical agents

The invention relates to compatible PM polymer blends with polyesters as mix components, which comprise

Compatible polymeric mixtures

Multi-layer plastic elements containing a polycarbonate core, with a polymethacrylate layer containing a UV absorber, and modified to be impact-resistant, applied to the core, where the polymethacrylate plastic layer is composed of methacrylate copolymers, which form compatible mixtures with polycarbonate, especially the polycarbonate of bisphenol A, exhibit good adhesion between the polycarbonate and the polymethacrylate. The methacrylate copolymers are methyl methacrylate copolymers with (meth)acrylic monomers which contain carbocyclic substituents in the ester group. The protective layer containing UV absorber is applied to the polycarbonate plastic in thickness from 1 to 500 .mu.m by coextrusion or by lacquering.

Impact-resistant methacrylate protective layer for polycarbonate,

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Rossdorf, Germany

Thomas Sufke