Abstract: Compositions comprising an organic polymer as the matrix and inorganic particles as the filler and exhibiting in mixture a) 20 to 99.9% by wt. of an organic polymer and b) 0.1 to 80% by wt. of inorganic particles, where the sum of the constituents a) and b) amounts to 100% by wt.; and optionally c) 0 to 100 parts by weight of b) of various additives, in which case the content of the additives c) relates to the sum of a) and b), calculated as 100 parts by weight. characterized in that the composition can be obtained by incorporating particles and optionally other additives into the polymer matrix, in which case the particles to be incorporated i) are aggregates of globular primary particles; ii) the size of the primary particles is in a range of 0.5 nm to less than 100 nm; iii) the volume-weighted median value d50 of the particles is in a range of greater than 0.50 ?m to 0.

Abstract: (EN) The invention concerns a method for producing a thermoplastic molding material or element, said material or element containing nanometric inorganic particles. In molten state, the thermoplastic is mixed with the nanometric inorganic particles and with a solubilizing agent in a conveyor screw extruder, the pressures and temperatures being adjusted so that the plastic is in melt form and the solubilizing agent in supercritical state. The invention is characterized in that at the output of the extruder, the mixture passes through a slot with a passage less than 20 $g(m)m to penetrate into an expansion zone and the molten material, wherein are incorporated the nanometric inorganic particles, is evacuated, reduced into molding material after cooling or transferred into a molding tool to be molded. The invention also concerns the molding material and the molding elements obtained by this method, as well as the uses thereof.

Abstract: The invention relates to a polymer mixture, based on the (meth)acrylate (co)polymer components a.), b.), c.) and/or d.) according to claim 1, where a test specimen produced from the polymer mixture simultaneously has the following properties: a tensile modulus (ISO 527) of at least 2 500 MPa, a Vicat softening point VSP (ISO 306-350) of at least 110° C., an impact resistance (ISO 179-2D, flatwise) of at least 30 kJ/m2, and a melt index MVR (ISO 1133, 230° C./3.8 kg) of at least 1.0 cm3/10 at least The invention further relates to injection mouldings and to the use of the polymer mixture for production of injection mouldings.

Abstract: The invention relates to the use of polyalkyl(meth)acrylate bead polymers with an average particle size V50 that ranges between 30 and 70 ?m for improving the stress cracking resistance of moulding materials containing polyalkyl(meth)acrylate. The invention also relates to moulding materials comprising: a) at least 50 wt. % of an impact resistance modifying agent, which contains at least one polyalkyl(meth)acrylate phase; b) at least 8 wt. % of a polyalkyl(meth)acrylate bead polymer with an average particle size V50 that ranges between 30 and 70 ?m; and c) between 0 and 42 wt. % of a polyalkyl(meth)acrylate with a molecular weight ranging between 20,000 and 350,000 g/mol, whereby the wt. % of the components a) to c) amounts to 100 wt. %, and to moulded bodies that can be obtained from said materials.

Abstract: The invention is a copolymer P, dispersant for dyes and/or pigments in standard plastic substances SK, wherein P exhibits a universal compatibility with standard plastics SK, with the feature that copolymer P is synthesized from monomer units:(m1) methyl methacrylate,(m2) (meth)acrylate of formula I: ##STR1## (m3) (meth)acryl compound of formula II: ##STR2## and optionally (m4) methacrylate of formula III: ##STR3##