Abstract: Deep black thermoplastic molding compositions having high gloss can be produced by mixing the following components: 90% to 99.5% by weight of one or more styrene copolymers as component A1, or 90% to 99.5% by weight of one or more polymethylmethacrylates (PMMA) and/or polyalkylmethacrylates as component A2, or 90% to 99.5% by weight of one or more polycarbonates (PC) and/or polyester carbonates as component A3, 0.01% to 5% by weight of a pigment black as component B, 0.1% to 1.5% by weight of at least two dyes soluble in the molding composition as component C, 0% to 5% by weight of one or more additives other than components B and C, as component D. These are found to be particularly weathering-resistant.

Abstract: A process for producing a thermoplastic molding composition comprising: 10% to 40% by weight of a graft copolymer A comprising 50% to 70% by weight, based on A, of a graft base A1 formed from an elastomeric, crosslinked acrylic ester polymer and 30% to 50% by weight of a graft shell A2, 50% to 90% by weight of a hard matrix B formed from copolymers of styrene or ?-methylstyrene and acrylonitrile, 0% to 50% by weight of a further graft copolymer C, 0% to 15% by weight of additives D, wherein the reaction for preparation of the acrylic ester polymer A and/or the reaction for preparation of C is conducted in the presence of 0.01 to 4 times the molar amount of sodium carbonate, based on the sum total of the molar amount of initiator used in the preparation of the graft base and graft shell, leads to lower coagulate formation.

Abstract: The invention relates to a thermoplastic composition containing the components A and B and optionally the additional components C and D, the sum of which equals 100 wt. %. The molding compound consists of: a) 60 to 75 wt. % of one or more styrene copolymers A, b) 25 to 40 wt. % of one or more graft copolymers B, c) 0 to 15 wt. % of a rubber C which is different from component B, and d) 0 to 5 wt. % of one or more additives D. The composition contains 0.2 to 3.0 wt. %, based on the total weight of the components A to D, of oligomers, can be readily processed, and leads to scratch-resistant molded parts.

Abstract: The invention relates to a thermoplastic molding composition which comprises at least one copolymer component made of styrene monomers and nitrile monomers, and also at least one graft copolymer based on an acrylate rubber. The invention also relates to thermoplastic moldings produced from the thermoplastic molding composition, and the use thereof.

Abstract: The invention relates to a process for producing molding compositions containing: a) from 55 to 85% by weight of copolymer A composed of vinylaromatic monomer A1 and a,B-unsaturated monomer A2; b) from 15 to 45% by weight of graft copolymer B with particle size from 50 to 550 nm composed of: B1: from 60 to 80% by weight of rubbery graft base B1 composed of: B11: from 80 to 99% by weight of at least one C2-C8-alkyl acrylate, B12: from 0.5 to 2.5% by weight of cyclic crosslinking agent, B13: from 0 to 2% by weight of non-cyclic crosslinking agent, B2: from 20 to 40% by weight of at least one graft shell B2 composed of: B21: from 60 to 75% by weight of a styrene, B22: from 25 to 40% by weight of acrylonitrile, c) from 0 to 10% by weight of additives C; where the reaction time of the polymerization for producing the graft base B1 is in the range from 2 to 5 h, and the addition of the starting materials takes place over at least two chronological segments.

Abstract: It was found that water-repellent thermoplastic moulding compositions, which comprise a) from 66 to 72% by weight of one or more styrene-acrylonitrile copolymers as component A, b) from 25 to 35% by weight of one or more polyacrylate rubbers as component B, c) from 1 to 5% by weight of one or more fluorine-containing polymer components C, selected from the group of polyvinyliden-difluoride and polyvinyliden-tetrafluoride, d) from 0.05 to 6% by weight of one or more further additives, which are different from C, as component D, where each of the % by weight values is based on the total weight of components A to D and these give a total of 100% by weight, have good replication properties and lead to highly water-repellent surfaces.

Abstract: The invention relates to thermoplastic compositions, containing the following components: a) 30 to 90 wt % of one or more styrene copolymers, and acrylonitrile, as component A; b) 10 to 70 wt % of several impact-modifying graft rubbers without an olefinic double bond in the rubber phase as component B, wherein said component B contains: B1) 1 to 50 wt % of rubber particles that have an average particle diameter of 50 to 150 nm as component B I; B2) 50 to 99 wt % of rubber particles that have an average particle diameter of 800 to 1200 nm as component B2; c) 0 to 20 wt % of one or more additives as component C; are especially weather-resistant and have good mechanical properties.

Abstract: The invention relates to a process for producing moulding compositions containing: a) from 55 to 85% by weight of copolymer A composed of vinylaromatic monomer A1 and a,B-unsaturated monomer A2; b) from 15 to 45% by weight of graft copolymer B with particle size from 50 to 550 nm composed of: B 1: from 60 to 80% by weight of rubbery graft base B 1 composed of: B11: from 80 to 99% by weight of at least one C2-C8-alkyl acrylate, B12: from 0.5 to 2.5% by weight of cyclic crosslinking agent, B13: from 0 to 2% by weight of non-cyclic crosslinking agent, B2: from 20 to 40% by weight of at least one graft shell B2 composed of: B21: from 60 to 75% by weight of a styrene, B22: from 25 to 40% by weight of acrylonitrile, c) from 0 to 10% by weight of additives C; where the reaction time of the polymerization for producing the graft base B 1 is in the range from 2 to 5 h, and the addition of the starting materials takes place over at least two chronological segments.

Abstract: A process for producing a thermoplastic molding composition comprising: 10% to 40% by weight of a graft copolymer A comprising 50% to 70% by weight, based on A, of a graft base A1 formed from an elastomeric, crosslinked acrylic ester polymer and 30% to 50% by weight of a graft shell A2, 50% to 90% by weight of a hard matrix B formed from copolymers of styrene or ?-methylstyrene and acrylonitrile, 0% to 50% by weight of a further graft copolymer C, 0% to 15% by weight of additives D, wherein the reaction for preparation of the acrylic ester polymer A and/or the reaction for preparation of C is conducted in the presence of 0.01 to 4 times the molar amount of sodium carbonate, based on the sum total of the molar amount of initiator used in the preparation of the graft base and graft shell, leads to lower coagulate formation.

Abstract: The invention relates to a polymer mixture made of styrene/nitrile monomer copolymers and of graft copolymers based on acrylate rubbers, and also to thermoplastic moulding compositions and mouldings produced therefrom and use of these.

Abstract: The invention relates to a thermoplastic composition containing the components A and B and optionally the additional components C and D, the sum of which equals 100 wt. %. The molding compound consists of: a) 60 to 75 wt. % of one or more styrene copolymers A, b) 25 to 40 wt. % of one or more graft copolymers B, c) 0 to 15 wt. % of a rubber C which is different from component B, and d) 0 to 5 wt.% of one or more additives D. The composition contains 0.2 to 3.0 wt. %, based on the total weight of the components A to D, of oligomers, can be readily processed, and leads to scratch-resistant molded parts.

Abstract: Thermoplastic moulding compositions containing: from 55 to 85% by weight of a copolymer A composed of styrene and acrylonitrile, from 10 to 40% by weight of at least one graft copolymer B composed of B1: from 50 to 80% by weight, preferably from 60 to 70% by weight, of crosslinked acrylate polymer B1 with average particle diameter from 300 to 700 nm as graft base B1, B2: a first graft shell B2 made of from 5 to 30 of a vinylaromatic monomer B21, and B3: a second graft shell B3 made of from 15 to 40 of a mixture of vinylaromatic monomers B31 and nitrile monomers B32, where these are present in a ratio by weight of from 4:1 to 3:2, and from 0 to 5% by weight of additives and/or auxiliaries C, have particular mechanical properties when the content of acrylonitrile in the copolymer component A and the content of acrylonitrile in the graft shell B3 differ by at least 8% by weight.

Abstract: The invention relates to thermoplastic molding compounds which contain impact-modified styrene/nitrile monomer copolymers, to molded products and films produced therefrom and to the use thereof. The impact modifiers used are linear A-B-A tri-block copolymers from hard polymer blocks A and a soft polymer block B, preferably polymethylmethacrylate-block-polybutylacrylate-block-polymethylmethacrylate.

Abstract: It was found that water-repellent thermoplastic moulding compositions, which comprise a) from 66 to 72% by weight of one or more styrene-acrylonitrile copolymers as component A, b) from 25 to 35% by weight of one or more polyacrylate rubbers as component B, c) from 1 to 5% by weight of one or more fluorine-containing polymer components C, selected from the group of polyvinyliden-difluoride and polyvinyliden-tetrafluoride, d) from 0.05 to 6% by weight of one or more further additives, which are different from C, as component D, where each of the % by weight values is based on the total weight of components A to D and these give a total of 100% by weight, have good replication properties and lead to highly water-repellent surfaces.

Abstract: The invention relates to thermoplastic compositions, containing the following components: a) 30 to 90 wt % of one or more styrene copolymers, and acrylonitrile, as component A; b) 10 to 70 wt % of several impact-modifying graft rubbers without an olefinic double bond in the rubber phase as component B, wherein said component B contains: BI) I to 50 wt % of rubber particles that have an average particle diameter of 50 to 150 nm as component B I; B2) 50 to 99 wt % of rubber particles that have an average particle diameter of 800 to 1200 nm as component B2; c) 0 to 20 wt % of one or more additives as component C; are especially weather-resistant and have good mechanical properties.

Abstract: The invention relates to a polymer mixture made of styrene/nitrile monomer copolymers and of graft copolymers based on acrylate rubbers, and also to thermoplastic moulding compositions and mouldings produced therefrom and use of these.

Abstract: The invention relates to a polymer mixture made of styrene/nitrile monomer copolymers and of graft copolymers based on acrylate rubbers, and also to thermoplastic moulding compositions and mouldings produced therefrom and use of these.