Abstract: Flame-resistant polyester moulding compounds comprising(A) 70-95% by weight of a specific polyester mixture made up of polyethylene terephthalate, polybutylene terephthalate copolyester with 3-30 mol % of an aliphatic dicarboxylic acid containing up to 36 C atoms, and, if desired, polybutylene terephthalate, and(B) 30-5% by weight of a flame-retardant additive made up of a bromine-containing organic compound and an antimony compound selected from the group comprising Sb.sub.2 O.sub.5, NaSbO.sub.3 and Sb.sub.2 O.sub.3, with a mean particle size of not less than 2 .mu.m,are particularly suitable for the production of partially crystalline mouldings by means of injection moulding. The mouldings are distinguished by a light self-colour with comparatively good thermal, mechanical and electrical properties.

Abstract: A process for producing light-reflecting bodies is described. The wall of the light-reflecting body consists of a polyalkylene terephthalate and/or a copolyester thereof, containing in each case 10-40% by weight of a finely-divided filler, a light-reflecting metal layer being applied directly to at least one surface of the wall. According to the novel process, a polyester moulding compound containing:(a) 90-60% by weight of a polyalkylene terephthalate and/or copolyester thereof, or of a mixture of polyalkylene terephthalates, and(b) 10-40% by weight of a finely-divided filleris subjected before shaping, at elevated temperature but at a temperature below the melting point of the moulding compound, to a vacuum treatment.

Abstract: When exposed to an open flame, the resultant polymer melt of a reinforced, flame-proofed thermoplastic polyester can be effectively prevented from dripping by the addition of xonotlite.

Abstract: The tendency to drip of the melt formed from reinforced moulding materials based on thermoplastic polyesters, provided with a flame-retarding finish, when the latter are subjected to an open flame can be prevented by adding phyllosilicates, and the reduction in the toughness properties thereby caused can be prevented by adding alkali metal salts of aliphatic C.sub.6-22 monocarboxylic acids.

Abstract: The invention relates to moulding compositions based on thermoplastic polyesters and containing finely particulate calcined magnesium sulfate. The moulded articles obtained with these compositions have increased stiffness and tracking resistance, this latter also in the presence of flame retardants and/or a reinforcing filler.

Abstract: Moulding compositions based on thermoplastic polyesters can be effectively protected against thermal degradation, if they contain, as a first stabilizer, a polyepoxide compound and, as a second stabilizer, a bisoxazoline or a dicarboxylic acid imide or amide.

Abstract: Moulding compositions based on thermoplastic polymers, which compositions optionally contain fillers, reinforcing fillers and/or fire-retarding agents, have improved tracking resistance, and, in the case where a noninflammable finish has been imparted, they reduce both the corrosiveness on contact metals and the dripping tendency.

Abstract: A light-reflecting body, in particular a car headlight, whose wall consists of a poly-(1,4-butylene terephthalate) which contains 10-60% by weight of a filler, having a particle size of at most 30 .mu.m, chosen from the group comprising kaolin, talc, mica, wollastonite, glass beads, zinc sulfide, lithopone, calcium sulfate and barium sulfate, onto which wall is applied a light-reflecting metal layer, if necessary over a previously applied lacquer layer.

Abstract: The invention relates to moulding compositions based on thermoplastic polyesters and containing finely particulate dolomite. The moulded articles obtained with these compositions have increased stiffness and dimensional stability under heat. In the presence of flame retardants and/or a reinforcing filler, the addition of dolomite also improves the tracking resistance.

Abstract: The invention relates to plastics moulding compounds which have been flame-proofed with organic chlorine- or bromine-containing compounds, said moulding compounds containing at least one aerosol selected from the group comprising the highly dispersed silicates, highly dispersed alumina, and highly dispersed titanium dioxide, and, optionally, a dibasic or tribasic oxyacid of phosphorus or an ester thereof. These moulding compounds have a reduced corrosive action on contact metals.

Abstract: The invention relates to glass-reinforced polyester moulding compounds which contain a polyester that is at least 90 mol. % a polyester of 1,4-butanediol and trans-1,4-cyclohexanedicarboxylic acid or polyester forming derivatives thereof. The content of glass fibres is preferably 2 to 60% by weight, based on the moulding compound. The moulding compounds of the invention have improved tracking resistance.

Abstract: Thermoplastic moulding compositions of linear polyesters and styrene/acrylonitrile modified by .alpha.-methylstyrene and/or acrylates can readily be processed to give mouldings which have outstanding toughness characteristics and other mechanical properties. Furthermore, from these moulding compositions it is possible to produce sheets which can be hot-laminated without patterns applied thereto being destroyed.

Abstract: Matt films having a scratch-resistant surface are obtained from moulding compositions reinforced with glass spheres if the extruded film is stretched while still in the melt-fluid state, and then allowed to cool. These films are suitable for use as coating materials, especially for furniture, doors and the like.

Abstract: Copolyesters of terephthalic acid, 1,4-butanediol and an aliphatic dicarboxylic acid of the formula Ihooc--r--cooh (i)wherein R represents a divalent aliphatic hydrocarbon group containing not more than 34 carbon atoms, are eminently suitable as impact modifiers for polyalkylene terephthalates for improving the toughness properties.

Abstract: Moulding materials reinforced with fiber fillers and based on copolyesters of poly-1,4-butylene terephthalate are suitable for the manufacture of mouldings, especially those having thin walls, which have low tendency to distortion.

Abstract: Reinforced polybutylene terephthalate which contain kaolin have improved arc resistance with at the same time improved tracking resistance.

Abstract: Glass fiber-reinforced thermoplastic polyester moulding compositions which contain poly(2,4,6-tribromostyrene) range from flame-resistant to flameproof and exhibit improved toughness properties. These moulding compositions can be used for the manufacture of shaped articles of all kinds, in accordance with the known processes.