Evonik Rohm Gmbh

Roehm Gmbh & Co Kg

Michael Blumenschein

Carlo Schuetz

Xenia Dann

Roland Saettler

Volker Benz

Markus Krall

The adhesive bonding of matted PMMA with customary polymerization adhesives leads to very shiny bond seams, since the cured polymerization adhesives have a shiny surface. This emphasizes the very joining zones which it is intended that the viewer of bonded products should not perceive. The adhesive should therefore be matted after curing. The adhesive has for its basis a polymerization adhesive, preferably a (meth)acrylate-based adhesive. Two different kinds of silica are added as disperse powder to the polymerization adhesive, namely a silica powder having an average particle size of from 1 &#x3bc;m to 10 &#x3bc;m (matting agent) and a silica powder having an average particle size of more than 10 &#x3bc;m up to 200 &#x3bc;m (texturing agent).

Matt polymerization glue

A photovoltaic element having two plane or curved plates ( ) and ( ), which are joined by a circumferential seal ( ) at a spacing ranging from 2 to 20 mm, thus forming a cavity ( ) in which there are enclosed a plurality of photovoltaic cells ( ), each of which is attached to only one of the two plates ( ) using an adhesive ( ), at least this plate ( ) being transparent, wherein both plates are made of plastic that is permeable to water vapor and the adhesive with which the photovoltaic cells are attached covers at most 30% of the area of the individual photovoltaic cells can be used for applications such as roofing and illuminating bus stops.

Photovoltaic element

Growing community of inventors

Bensheim, Germany

Michael Blumenschein