Abstract:
The invention relates to fibre-reinforced moulding materials, containing, relative to the sum of components A to I which total 100 % by weight: a) up to a total of 100 % by weight of the moulding material of at least one polycondensate as component A, as a residual component b) 1 to 15 % by weight of at least one particulate graft co-polymer, with a glass transition temperature in the soft phase below 0 DEG C and an average particle size ranging from 50 to 1000 nm as component B, c) between 0 and 15 % by weight of at least one co-polymer as component C, which consists of the following monomers: c1) between 50 and 90 % by weight, in relation to component C, of at least one vinyl aromatic monomer as component C1 and c2) between 10 and 50 % by weight, in relation to component C, of acrylnitrile and/or methacrylnitrile as component C2, d) between 0 and 20 % by weight of fibres as component D, e) between 0.01 and 15 % by weight of a polycarbonate as component E, f) between 0 and 2 % by weight of a carbon black as component F, g) between 0.01 and 15 % by weight of a polymer which is different from component B, as component G, h) between 0 and 20 % by weight of a polyester which is different from component A, as component H, i) between 0 and 10 % by weight of conventional additives such as UV stabilisers, oxidation retardants, lubricants and mould-release agents as component I. The invention also relates to moulded parts and composites made from the above moulded materials, to their recyclates and to the use of said moulded materials, moulded parts, composites and their recyclates.
Abstract:
Multiphase polymer mixtures contain (a) a polymer (A); (b) at least one A-B-C grafted block copolymer (B) made of a block A and a resilient block B that contains a block C as grafted lateral chain, blocks A, B and C differing from each other; and (C) at least one additional polymer (C) different from (A) and (B) and incompatible with polymer (A). Polymer (A) is compatible with block A and incompatible with block C, polymer (C) is compatible with block C and incompatible with block A, the resilient block B has a glass transition temperature below + 20 DEG C and blocks A, B and C are incompatible with each other.
Abstract:
Anionic polymerization is used for the preparation of reaction mixtures comprising homopolymers, copolymers or block copolymers, and of homopolymers, copolymers and block copolymers which comprise acrylates or methacrylates or acrylates and methacrylates, wherein olefinically unsaturated compounds which are not acrylate or methacrylate derivatives are employed as solvent or as solvent component.
Abstract:
The invention relates to a method for producing polyamides. Said method is characterised in that the polymerisation of starting monomers is carried out in the presence of between 2.3 and 10 mmol - in relation to 1 mol of carboxamide group of the polyamide - of a compound used as a chain transfer agent, comprising a nitrile group and a functional group capable of forming a carboxamide group.
Abstract:
The invention relates to a method for producing polyamides. Said method is characterised in that the polymerisation of starting monomers is carried out in the presence of between 2.3 and 10 mmol - in relation to 1 mol of carboxamide group of the polyamide - of a compound used as a chain transfer agent, comprising a nitrile group and a functional group capable of forming a carboxamide group.
Abstract:
Empleo de masas termoplásticas de moldeo, conteniendo (A) una o varias poliamidas, (B) materiales fibrosos de relleno tratados por encolado, (C) sales de ácidos carboxílicos lineales saturadas con longitudes de cadena (incluyendo el átomo de carbono carboxílico terminal) de al menos 20, preferentemente de al menos 24 átomos de carbono y (D) haluros de metales alcalinos y compuestos de cobre (I), así como, si fuera necesario, (E) un colorante soluble en poliamida, (F) modificador de la resistencia al choque y/o (G) otros aditivos para la elaboración de cuerpos huecos de plástico, particularmente módulos de tubos de aspiración, o piezas de los mismos. - 17 -
Abstract:
Procedimiento para la obtención de poliamidas, caracterizado porque la polimerización de los monómeros de iniciación se lleva a cabo en presencia de 2, 3 hasta 10 mmoles, referido a 1 mol de grupos carboxamido de la poliamida, de un compuesto que presenta un grupo nitrilo y un grupo funcional capaz de formar un grupo carboxamido, como regulador de las cadenas.
Abstract:
Thermoplastic molding compositions comprising A) from 10 to 99% by weight of at least one thermoplastic polyamide, B) from 0.1 to 5% by weight of at least one polyethyleneimine homo- or copolymer, C) from 0.05 to 3% by weight of a lubricant, D) from 0.05 to 3% by weight of a copper-containing stabilizer or of a sterically hindered phenol or mixtures thereof, E) from 0 to 60% by weight of further additives, the sum of the percentages by weight of components A) to E) adding up to 100%.
Abstract:
The invention relates to the use of phyllosilicates for improving the chemicals resistance, reducing the swelling, and improving the stress-cracking resistance of styrene copolymers, and to corresponding styrene copolymers, and to a process for their preparation.