Evonik Roehm Gmbh

Evonik Rohm Gmbh

Roehm Gmbh

Guenther Dickhaut

Uwe Numrich

Markus Parusel

Ghirmay Seyoum

Michael Enders

Claude Guenanten

Achim Neuhaeuser

Ralf Richter

Helmut Haering

Detlef Birth

Thomas Pfaff

Wangelis Karampougioukis

Peter Battenhausen

Jonas Scherble

Haroldo Rodrigues

Juergen Pachmann

The present invention relates to peelproof security films made from a poly(meth)acrylate, more particularly from a polymethyl methacrylate, which comprises at most 10 wt % of or no impact modifiers. These films are highly transparent, have good printability qualities, and can be applied without intended break points. The peelproof security films can therefore find use in particular in documents, such as passports, for example, in security labels, such as road tax badges, for example, or for product theft prevention, or as price tags. These security labels are further distinguished by good weathering stability and in particular by especially good UV stability. The present invention relates more particularly to the use of these security labels, which have a thickness of not more than 2 mm, comprise at least 80 wt % of polymethyl methacrylate and contain no impact modification particles.

Permanent security film with high transparency and without predetermined breaking points

The present invention relates to a process for producing transparent polymeric films or plastics moldings of particularly high chemical resistance, having more particularly a very good resistance towards oil-in-water and water-in-oil emulsions, and of high optical quality.

Chemical-resistant films in high optical quality

The present invention relates to a method for producing light guide bodies and to their use in lighting units, for example for liquid crystal displays or for monitors. In particular, the present invention relates to a method for producing light guide bodies which have a thickness of at most 1 mm and contain at least 80 wt % of polymethyl methacrylate and no light-scattering constituents.

Method for producing light guide bodies and use thereof in lighting unit

The present invention relates to a plastics mixture comprising at least one thermoplastic polyurethane A) and at least one impact-modified poly(meth)acrylate B), where the impact-modified poly(meth)acrylate comprises a hard phase whose glass transition temperature is at least 70&#xb0; C. and a tough phase whose glass transition temperature is at most &#x2212;10&#xb0; C., the average particle size of the tough phase is at most 130 nm, and at least a portion of the tough phase has covalent linkage to the hard phase.

Plastic mixtures comprising thermoplastic polyurethane (TPU) and impact-resistant poly(meth)acrylate

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Mannheim, Germany

Guenther Dickhaut