Abstract: The present invention relates to polyamide moulding compounds which have very low distortion with good mechanical properties. This is achieved by a combination of transparent polyamide with fibrous reinforcing materials and also particulate fillers. The moulding compounds according to the invention are used for the production of any moulded articles, semi-finished products or finished products.

Abstract: The present invention relates to transparent, amorphous polyamide moulding compounds, containing polyamides formed by polycondensation of an aliphatic dicarboxylic acid with a cycloaliphatic diamine and also blends thereof, and also additives and/or colourants, the aliphatic dicarboxylic acid being selected from dicarboxylic acids with 17 to 21 C atoms and in that the diamine is bis(3-methyl-4-aminocyclohexyl)methane (MACM) and in that cross-linking additives, in the case of the additives, and photochromic colourants, in the case of the colourants, are precluded.

Abstract: A polyamide molding composition is described, comprising at least one transparent homopolyamide and/or copolyamide in a proportion by weight of from 70 to 99% by weight; at least one further polymer in a proportion by weight of from 1 to 30% by weight; and also optionally further dyes and/or additives. The polyamide molding composition is one wherein the further polymer is a polyesteramide, and wherein the light transmittance to ASTM D1003 of a sheet of thickness 2 mm produced from the polyamide molding composition is at least 88%, and preferably wherein the notched impact resistance of an article produced therefrom is at least 14 kJ/m2.

Abstract: A polyamide molding composition is described, comprising a proportion by weight of from 50 to 99% by weight of at least one transparent homopolyamide and/or copolyamide, a proportion by weight of from 1 to 50% by weight of at least one further polymer whose glass transition temperature is below 80° C., and also a proportion by weight of from 0.001 to 2.0% by weight of at least one photochromic dye. Further dyes and/or additives can optionally be present. The invention moreover encompasses articles manufactured therefrom, a particular example being photochromic ophthalmic lenses.

Abstract: The present invention relates to a plastic component having a visible part that is made in one single layer from a plastic molding compound and that comprises a transparent or translucent matrix, and having a light source that comprises one or more lamp elements, situated under the surface of the visible part. The visible part is implemented as essentially opaque in relation to daylight and transparent or translucent in relation to the light emitted by the lamp elements. The visible part also contains admixed effect pigments and defines a surface appearance image which, when the light source is inactive, essentially corresponds to the surface appearance image of the remaining wall of an object in which the plastic component is installed and which, when the light source is active, is essentially determined by the light source activity.

Abstract: Disclosed is an injection molding method for manufacturing plastic parts from thermoplastically processible plastic molding materials with at least one exposed part (1) and at least one functional part (10), whereby the plastic molding material for the exposed part (1) comprises a transparent or translucent matrix with added effect pigments, and whereby the functional parts (10) can exhibit different physical and/or chemical plastic properties to the exposed parts (1).

Abstract: The invention relates to a door drive system for a wing of a door, a window or similar, comprising a housing with a drive and/or return device, e.g. a closing spring (7), and a preferably hydraulic damping device. In practice, drive housings of this type are cast in aluminium. The production costs are relatively high since housing openings and boreholes such as hydraulic channels have to be cut into the housing (31) later on. According to the invention, the housing (31) is produced wholly or partly from plastic. This enables the cavities which are necessary for the housing to function, such as housing boreholes and/or openings to be made in the drive housing when it is produced, without removing material by cutting. According to another design, the drive housing has several housing parts which are produced separately. The adjacent sections of the housing parts are then stuck or welded together.

Abstract: The invention relates to the use of polyamide moulding compounds, their alloys or blends, which contain at least one homopolyamide, which has been obtained from long-chained aliphatic monomer blocks with cycloaliphatic monomer blocks, in order to manufacture moulded members for optical or electro-optical applications.