Abstract: Particulate, multiphase polymers which have a core (A) and an overlying shell (B) wherein the core (A) is an organic, rubber-like polymer comprising polymerized olefinically unsaturated monomer units having softening point temperatures below 0.degree. C. and wherein the shell (B) is an organopolysiloxane are obtained by producing in a first stage an organic rubber-like polymer in latex form by emulsion polymerization and, in a second stage, the latex particles of the first stage are surrounded with a shell (B) or organopolysiloxane by polymerizing low molecular weight organosiloxanes in the presence of the latex particles of the first stage.

Abstract: Thermoplastic moulding compounds consisting of 99.8-95% by weight of a mixture consisting of an aromatic polycarbonate, a graft polymer and optionally a thermoplastic vinyl polymer and/or the usual additives and 0.2 to 5% by weight of a polyalkylene ether which has been modified by a radical former.

Abstract: Thermoplastic molding compositions containingA. 10 to 98 parts by weight and preferably 10 to 95 parts by weight of one or more thermoplastic aromatic polycarbonates,B. 2 to 60 parts by weight and preferably 5 to 60 parts by weight of one or more graft polymers of:B.1 5 to 90 parts by weight and preferably 30 to 80 parts by weight of a mixture ofB.1.1 50 to 95 parts by weight styrene, .alpha.-methyl styrene, nucleus-substituted styrene, methyl methacrylate or mixtures thereof andB.1.2 50 to 5 parts by weight acrylonitrile, methacrylonitrile, methyl methacrylate, maleic acid anhydride, N-substituted maleic imide or mixtures thereof, orB.2 95 to 10 parts by weight and preferably 70 to 20 parts by weight of a rubber having a glass transition temperature T.sub.G of .ltoreq.10.degree. C.,C. 0 to 80 parts by weight of a thermoplastic copolymer of:C.1 50 to 95 parts by weight styrene, .alpha.-methyl styrene, nucleus-substituted styrene, methyl methacrylate or mixtures thereof andC.

Abstract: Silicone rubbers in the form of crosslinked, particulate particles can be used as a grafting base for the preparation of thermoplastic moulding materials having good low-temperature impact strength and resistance to weathering-ageing, after they are provided with an intermediate shell of crosslinked acrylate rubber.

Abstract: Particularly high-grade blends of thermoplastic polycarbonates, graft copolymers and, optionally, further thermoplastic resins, useful as moulding materials with good low-temperature impact strength and resistance to ageing and light, which yield mouldings with superior surfaces, are obtained from graft bases which are silicone rubbers containing sulphur in addition to groups containing carbon double bonds.

Abstract: The present invention relates to thermoplastic moulding compounds based on thermoplastic polycarbonates, graft polymers and optionally thermoplastic copolymers, characterized in that the graft polymers contain at least one primary or secondary aliphatic acrylic acid ester or tert.-butyl acrylate or tert.-butyl methylacrylate incorporated by polymerization. The invention also relates to a process for the preparation of these thermoplastic moulding compounds.

Abstract: The present invention relates to new flameproofing agent combinations of bisphthalimides and tetrafluoroethylene polymers and their use for providing thermoplastic moulding compositions of halogenated polycarbonates and ABS polymers with a flame-repellent finish.

Abstract: The present invention relates toA. Thermoplastic moulding materials based on polydiorganosiloxane/polycarbonate block copolymers and ABS polymers andB. Thermoplastic moulding compositions based on polysiloxane/polycarbonate block copolymers, elastomeric polymers and, if appropriate, polyalkylene terephthalate.

Abstract: The present invention relates to thermoplastic moulding compositions comprising polydiorganosiloxane-polycarbonate block copolymers, copolymers of styrene and maleic anhydrides, graft polymers and, where appropriate, further customary additives and a process for preparing these moulding compositions.

Abstract: The present invention relates to phthalimide compounds of the formula (I) ##STR1## wherein X denotes H or halogen, for example chlorine or bromine,a and b independently of one another denote 0 or 1 andR denotes a C.sub.1 -C.sub.4 -alkyl radical,which, in combination with alkali metal salts, are suitable as flameproofing agent combinations for thermoplastic, branched, aromatic polycarbonates, and the preparation of these compounds.

Abstract: Thermoplastic moulding compositions containing:A. 1-99 parts by weight of an aromatic thermoplastic polycarbonate or several aromatic thermoplastic polycarbonates andB. 1-99 parts by weight of a thermoplastic compolymer of 30-40 parts by weight of .alpha.-methylstyrene, 50-60 parts by weight of methyl methacrylate and 5-15 parts by weight of acrylonitrile.

Abstract: The present invention relates to the use of perfluoroalkanesulphonic acid aryl esters as anti-drip agents in flame-repellant moulding compositions based on thermoplastic aromatic polycarbonates, moulding compositions containing flameproofing agents and these anti-drip agents and a process for the preparation of such moulding compositions.

Abstract: The present invention relates to flame-retarding moulding compositions which are based on thermoplastic polycarbonates, copolymers of styrenes and maleic anhydride, phosphorus compounds of the formula (I) ##STR1## tetrafluoroethylene polymers, small amounts of graft polymers and optionally halogen compounds and which in addition can contain stabilizers, pigments, flow agents, release agents and/or antistatics, and to a process for their preparation.

Abstract: The present invention is related to polycarbonate molding compositions containing a co-precipitate of a polycarbonate resin and a fluoropolymer. This co-precipitate was found to be suitable as an additive for polycarbonate resins because it offers improved dispersibility with the resin and good flammability performance as well as aesthetic characteristics. The co-precipitate is prepared by first mixing an aqueous dispersion of a fluoropolymer with a polycarbonate solution and then precipitating both using a suitable precipitation agent. After isolation washing and drying the co-precipitate of the invention is suitable for incorporation in a polycarbonate resin optionally with known flame retarding agents. Molded parts prepared from the compositions of the invention are characterized by their improved homogeneity and flame retardance.

Abstract: The present invention relates to flame-retarding, thermoplastic polycarbonate moulding materials of high impact strength consisting of halogen-containing polycarbonates, copolymers formed from styrenes and (meth)acrylonitrile, phosphorus compounds of the formula (I) ##STR1## tetrafluoroethylene polymers and small amounts of graft polymers and, if appropriate, effective amounts of stabilizers, pigments, lubricants, mould release agents and/or antistatic agents, and to a process for the preparation thereof.

Abstract: The invention relates to pulverulent diorganosiloxane polymers and a process for the preparation of such powders.

Abstract: The present invention relates to thermoplastic moulding compositions containing (A) 20 to 80 parts by weight of a polydiorganosiloxane/polycarbonate block copolymer, (B) 70 to 5 parts by weight of a graft polymer in particle form and (C) 5 to 60 parts by weight of a rubber-free, thermoplastic vinyl polymer, the total of parts by weight of components (A)+(B)+(C) being in each case 100 parts by weight, and, if appropriate, other known additives.

Abstract: The present invention relates to thermoplastic moulding compositions containing thermoplastic polycarbonates, graft polymers, rubber-free copolymers and, if appropriate, copolymeric rubbers, and also, if appropriate, conventional additives, which are characterized in that the rubber-free copolymers contain internal epoxide compounds.

Abstract: The present invention provides moulding compositions consisting of polyphenylene oxide/polycarbonate block condensates, graft polymers and, where appropriate, co-polymers. These moulding compositions can contain further suitable additives. The present invention also provides a process for preparing the moulding compositions according to the invention.

Abstract: The present invention relates to moulding materials, containing halogenated copolycarbonates, graft polymers based on an acrylate rubber, thermoplastic copolymers, tetrafluoroethylene polymers, metal compounds of antimony or bismuth, TiO.sub.2 and also, if appropriate, low molecular weight, organic halo compounds, stabilizers, flow agents, antistatic agents and/or mould release agents, and also a process for the preparation of these moulding materials.