Diffuse provided moulding mixtures and moulded products prepared from these

• Main Authors: HOESS, WERNER, SUEFKE, THOMAS, PARUSEL, MARKUS, SCHULTES, KLAUS
• Format: Patent
• Language: English; French; German
• Published: 04.01.2012
• Subjects: BLASTING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MECHANICAL ENGINEERING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; THEIR PREPARATION OR CHEMICAL WORKING-UP; WEAPONS

The present invention provides a moulding composition, which includes:a plurality of bead polymers dispersed in at least one matrix polymer;wherein the bead polymers:have an average particle size of 5 to 40 mum, andhave a refractive index nD at 20° C. which is different from a refractive index nD at 20° C. of said matrix polymer;and wherein the bead polymers are prepared by a process, which includes:contacting:at least one polymerizable mix which includes at least 50% by weight of at least one (meth)acrylate monomer,at least one aluminum compound, andan aqueous phase,to prepare a mixture;dispersing the mixture at a shear rate >=10 s<-1 >to form a dispersion, wherein the dispersion is stabilized by the aluminum compound; andpolymerizing to produce the bead polymers having an average particle size of 5 to 40 mum.