Abstract: Thermoplastic molding composition based on thermoplastic polyesters (a.sub.1), graft polymers incorporating acrylate rubbers as grafting base (a.sub.2), copolymers of aromatic vinyl monomers and acrylonitrile or methacrylonitrile (a.sub.3) and glass fibers (B) have particularly good mechanical properties if the (meth)acrylonitrile content in component (a.sub.3), based on the total weight of (a.sub.3), is less than the (meth)acrylonitrile content of component (a.sub.22).

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: A flameproofed nylon molding composition which can be processed by thermoplastic methods and which contains, as the flameproofing agent, from 5 to 30% by weight of brominated styrene oligomers and a synergistic metal oxide. The compositions may be used for the manufacture of injection moldings for the electrical industry.

Abstract: Flame-proofed linear polyesters containing, as flame-proofing agents, halogenated oligomeric styrenes and synergistic compounds.

Abstract: Filled nylon molding compositions of increased rigidity containing red phosphorus as a flameproofing agent and talc or mica as a filler. They may be converted to moldings which are used, above all, in the electrical industry.

Abstract: Process for the continuous manufacture of polymeric starting materials for high-grade transparent thin sheeting, whereinA. .epsilon.-caprolactam is continuously agitated in a first reaction zone under polyamide-forming conditions at temperatures of from 240.degree. to 290.degree. C until at least 20% and preferably at least 35% of the .epsilon.-caprolactam has reacted,B. magnesium silicate having a particle size of less than 30 .mu.m is then added to the melt to give magnesium silicate concentrations in the reaction mixture of from 0.0005 to 0.5% and preferably from 0.001 to 0.01%, andC. the melt is then polymerized in further stages to completion until the relative viscosity is from 2.4 to 3.3 and preferably from 2.5 to 2.8.

Abstract: Thermoplastic, linear, saturated polyesters containing flameproofing agents consisting of halogen compounds and an antimony trioxide which has been prepared in an aqueous suspension of an inorganic support using an aqueous antimony(III) halide solution and adding an aqueous solution of a base to raise the pH to from 6 to 8 with precipitation of the antimony compound onto the support, followed by separation of the solids from the aqueous phase.

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 molding compositions based on polybutylene terephthalate having a relative viscosity of from 1.3 to 2.0, as measured in a phenol/o-dichlorobenzene mixture at 25.degree. C, and which contain, to increase the thermo-aging stability and toughness and also to improve the processing stability, from 0.1 to 10% by weight, based on the polybutylene terephthalate, of isocyanates or isothiocyanates and/or carbodiimides and/or compounds forming isocyanate groups or isothiocyanate groups and/or carbodiimide groups.

Abstract: Glass-fiber-reinforced molding compositions of reduced flammability consisting of (A) a linear saturated polyester resin, (B) from 10 to 60 per cent by weight of glass fibers and (C) from 3 to 30 per cent by weight of a flame retardant. The compositions contain from 2 to 20 per cent by weight, based on the total weight of the molding composition, of a particulate water-insoluble silicate having a bulk density of more than 100 g/l, which prevents dripping of the composition when in contact with an open flame.

Abstract: Self-extinguishing molding compositions based on polybutylene terephthalate which do not drip flaming particles on exposure to a flame and which contain a compound containing halogen, which is stable under the conditions required for processing the melt, and a synergistically active metal compound, are obtained by incorporation of a magnesium silicate of the chrysotile type into the polycondensate.

Abstract: Molding compositions based on polybutylene terephthalate distinguished by improved tracking resistance and containing, based on the total weight of the molding composition, from 5 to 50% by weight of a polyolefin.