Abstract: In a process for producing filler-containing thermoplastic molding compositions by mixing fillers with thermoplastics in the melt,a) the fillers are mixed in a mixing apparatus in the melt with a low molecular weight thermoplastic having a melt viscosity of at most 30 Pas (measured at 20.degree. C. above the melting point of the thermoplastic compound and at a shear gradient of 1,000 s.sup.-1),b) the product thus obtained is removed from the mixing apparatus, cooled and comminuted, andc) the comminuted product is then subjected in the solid phase to a post-condensation.

Abstract: Thermoplastic molding materials contain, as essential components,A) from 30 to 99.995% by weight of a thermoplastic polymer,B) from 0.005 to 5% by weight of an inorganic subgroup metal saltandC) from 0 to 69.995% by weight of fibrous or particulate fillers or a mixture thereof.

Abstract: Thermoplastic molding materials contain, as essential components,A) from 30 to 80% by weight of a thermoplastic polyesterandB) from 20 to 70% by weight of a mixture of carbonates of metals of the 2nd main group of the Periodic Table.

Abstract: The flameproofing agent content of molding compositions containing polyesters (a.sub.1), acrylate graft polymers (a.sub.2), styrene/acrylonitrile copolymers (a.sub.3) and glass fibers can be reduced without affecting the flame resistance by adding finely divided PTFE.

Abstract: Thermoplastic molding compositions which contain(A) 50-99% by weight of a polyalkylene terephthalate and/or of a polycarbonate and(B) 1-50% by weight of an elastomeric polymer having epoxy and/or carboxyl groups on the surface,wherein component (B) is a graft polymer prepared by emulsion polymerization and has a glass transition temperature of below 0.degree. C. and a gel content of not less than 50%, have a high impact strength even at low temperatures.

Abstract: Conductive molding materials contain(A) from 29 to 76% by weight of one or more linear thermoplastic nylons,(B) from 20 to 50% by weight of finely divided calcined kaolin and/or finely divided calcium metasilicate, which are coated with organosilanes as coupling agents,(C) from 4 to 6% by weight of conductive carbon black having a BET specific surface area >900 m.sup.2 /g and a DBP absorption >300 ml/100 g and, if required,(D) from 0 to 15% by weight of conventional additives in effective amounts,the percentages of A to D summing to 100.

Abstract: Thermoplastic polyester molding compositions with improved heat distortion point contain, per 100 parts of a linear saturated polyester, from 1 to 100 parts of a rubbery graft copolymer, from 10 to 100 parts of an .alpha.-methylstyrene/acrylonitrile copolymer, and from 0 up to 80, preferably 10 to 80 parts of a filler, especially glass fibers as the filler. They can be converted to shaped articles by extrusion or injection molding.

Abstract: Thermoplastic polybutylene terephthalate molding compositions of improved stability due to the presence of from 0.01 to 10 percent by weight, based on the total molding composition, of a lactam derivative.

Abstract: Polybutylene terephthalate molding compositions containing from 0.5 to 20% by weight, based on the polyester, of an alkoxylated polyamide finely distributed therein to reduce the tendency of the polyester to electrification.

Abstract: Thermoplastic polyester molding compositions showing good impact resistance at both high and relatively low temperatures and containingA. 100 parts by weight of a linear saturated polyester of an aromatic dicarboxylic acid and optionally small portions of aliphatic dicarboxylic acids with saturated aliphatic or cycloaliphatic diols andB. from 1 to 25 parts by weight of a rubber-elastic graft copolymer having a glass temperature below -20.degree. C andC. optionally from 10 to 80 parts by weight of fillers.

Abstract: Suitable compounds for stabilizing polyamides against oxidation and thermal degradation are bis-ureas and bis(acid amides) based on 2,6-di-t-butylphenol-butylamine said compounds having the general formula: ##SPC1##Wherein Y represents the urea or amide radical.