Abstract: A thermoplastic coupling agent mixture (A) containinga) 5 to 95% by weight of an ethylene copolymer (A.sub.I) having minor amounts of polar comonomers, andb) 5 to 95% by weight of a copolymer (A.sub.II) of aromatic monovinyl comonomers and conjugated dienesis suitable in particular as a component in thermoplastic polymer mixtures that contain polyolefins (B), copolymers of styrene (C), and also if appropriate further thermoplastic polymers (D), and the components (B), (C) and if appropriate (D) may also be used in the form of reprocessed polymers obtainable by regranulating molded parts produced from the relevant materials.

Abstract: Abstract of the disclosure: A particulate graft copolymer comprises 30 to 90% by weight of at least one elastomeric grafting base A having a weight average particle size of from 30 to 1,000 nm comprising, based on A, 85 to 99.8% by weight of at least one alkyl acrylate A11 having 1 to 8 carbon atoms in the alkyl radical, 0.1 to 5% by weight of at least one polyfunctional, crosslinking monomer A12, and 0.1 to 10% by weight of at least one hydroxyalkyl acrylate or hydroxyalkyl methacrylate A13 or at least 50% by weight of one or more dienes A111, up to 50% by weight of one or more ethylenically unsaturated monomers A112, and 0.1 to 10% by weight of at least one hydroxyalkyl acrylate or hydroxyalkyl methacrylate A113 and10 to 70% by weight of a graft sheath B comprising, based on B, up to 99.9% by weight of at least one aromatic vinyl monomer B1, up to 99.9% by weight of at least one polar, copolymerizable, ethylenically unsaturated monomer B2, and 0.

Abstract: Molding materials based on polymethyl methacrylate comprising essentiallyA) from 99.99 to 95.0% by weight of a mixture comprising essentiallya.sub.1) from 5 to 95% by weight of polymethyl methacrylate, obtainable by polymerizing a mixture comprising essentiallya.sub.11) from 80 to 100% by weight of methyl methacrylate anda.sub.12) from 0 to 20% by weight of a C.sub.1 -C.sub.20 -alkyl ester of acrylic acid, anda.sub.2) from 95 to 5% by weight of a multistage graft copolymer based on a C.sub.1 -C.sub.20 -alkyl ester of acrylic and/or methacrylic acid andB) from 0.01 to 5.0% by weight of a polysiloxane of the general formula I ##STR1## where R.sup.1 is C.sub.1 -C.sub.6 -alkyl or C.sub.6 -C.sub.10 -aryl,R.sup.2 is hydroxy-C.sub.1 -C.sub.6 -alkyl or amino-C.sub.1 -C.sub.6 -alkyl, andn is a natural number from 5 to 200.

Abstract: Thermoplastic molding materials contain, as essential components,A) from 1 to 30% by weight of a polycarbonate,B) from 10 to 50% by weight of a graft polymerC) from 5 to 80% by weight of a thermoplastic copolymer comprisingc.sub.1) from 50 to 85% by weight of styrene or substituted styrenes of the general formula I or of a mixture thereof andc.sub.2) from 15 to 50% by weight of acrylonitrile or methacrylonitrile or of a mixture thereof andD) from 5 to 80% by weight of a thermoplastic copolymer which differs from component C) and comprisesd.sub.1) from 50 to 85% by weight of styrene or substituted styrenes of the general formula I or of a mixture thereof andd.sub.2) from 15 to 50% by weight of acrylonitrile or methacrylonitrile or of a mixture thereof,with the proviso that the amount by weight, based on the total weight of component D), of component d.sub.2) is lower than the amount by weight, based on the total weight of component C), of component c.sub.2).

Abstract: A particulate graft polymer A ofA1: a grafting base based on a polydiene rubber A1 of, based on A1,A11: 70 to 100% by weight of a polymerizable diene, andA12: up to 30% by weight of a copolymerizable, ethylenically unsaturated monomer having a first graft sheath A2 of, based on A2,A21: 75 to 99.8% of at least one C.sub.1 -C.sub.8 alkyl acrylate A21,A22: 0.1 to 5% by weight of at least one polyfunctional, crosslinking monomer A22,A23: 0.1 to 20% by weight of at least one monomer A23 containing one or more acidic or basic groups, and a second graft sheath A3 comprising, based on A3,A31: 40 to 89.9% by weight of at least one aromatic vinyl monomer A31,A32: 10 to 49.9% by weight of at least one polar, ethylenically unsaturated monomer A32,A33: 0.1 to 20% by weight of at least one monomer A33 containing one or more basic or acidic groups, andA34: up to 5% by weight of at least one polyfunctional, crosslinking monomer A34,A23 and A33 in each case being different groups.

Abstract: Particulate graft copolymers for matt thermoplastic molding materials contain a base and a graft sheath. The base contains 75 to 99.8% of at least one alkyl acrylate, from 0.1 to 5% of at least one polyfunctional, crosslinking monomer having at least two ethylenic double bonds which are not conjugated in the 1,3-position, and from 0.1 to 20% of at least one ethylenically unsaturated monomer having one or more acidic groups. Alternatively, the base may contain at least 50% of one or more dienes, up to 50% of at least one further ethylenically unsaturated monomer, and up to 15% of at least one ethylenically unsaturated monomer having one or more acidic groups. The sheath contains from 0 to 99.8% of at least one aromatic vinyl monomer, from 0 to 99.8% of at least one polar, copolymerizable, ethylenically unsaturated monomer, from 0.1 to 20% of at least one ethylenically unsaturated monomer having one or more basic groups, and from 0.1 to 10% of at least one hydroxyalkyl (meth)acrylate.

Abstract: A thermoplastic molding material comprising (A) a copolymer composed of acrylonitrile plus styrene, a-methylstyrene or a nuclear-substituted styrene derivative or mixtures of these three monomers; (B) a graft copolymer prepared either by (B.sub.1) emulsion polymerization of a monomer mixture, based on either styreneacrylonitrile or styreneacrylonitrile-methyl methacrylate, on a latex, obtained as an emulsion, of an elastomer based on butadiene or acrylic ester as a grafting base, or by (B.sub.2) solution polymerization of a monomer mixture, based on either styreneacrylonitrile or styreneacrylonitrile-methyl methacrylate, on an elastomer, prepared in solution, based on butadiene or acrylic ester or an EPDM elastomer as grafting base; (C) a. reinforcing agent based on an inorganic glass; and (D) a copolymer composed of (D.sub.1) units of the formula I, ##STR1## in which R.sup.1 and R.sup.2 are hydrogen or methyl and R.sup.3 is hydrogen, C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.12 cycloalkyl, C.sub.6 -C.sub.

Abstract: A molding material from a particulate graft polymer which consists ofA: a grafting base A based on an acrylate rubber andB: a graft B ofB1: from 40 to 89.9% by weight of at least one vinylaromatic monomer B1B2: from 10 to 49.9% by weight of at least one polar, coplymerizable, ethylenically unsaturated monomer B2B3: from 0.1 to 20% by weight of at least one monomer B3 containing one or more acidic groups.

Abstract: A particulate graft polymer comprisingA: from 30 to 80% by weight of one or more elastomeric polymers A having a mean particle size of from 30 to 1000 run, comprising, based on A,A1: from 85 to 99.8% by weight of one or more alkyl acrylates A1 having from 1 to 8 carbon atoms in the alkyl radical,A2: from 0.1 to 5% by weight of one or more polyfunctional, crosslinking monomers A2, andA3: from 0.1 to 10% by weight of one or more monomers A3 containing one or more acid groups, orA11: up to 100% by weight of a diene A11,A12: up to 50% by weight of one or more vinyl-aromatic monomers A12,A13: up to 10% by weight of one or more monomers A13 containing one or more acid groups, as the graft base, andB: from 20 to 70% by weight of a shell B grafted onto the elastomeric polymer A and comprising, based on B,B1: from 50 to 89.9% by weight of one or more vinylaromatic monomers B1,B2: from 10 to 49.9% by weight of one or more polar, copolymerizable, ethylenically unsaturated monomers B2, andB3: from 0.

Abstract: A graft consisting of from 5 to 90% of a core A1 having a glass transition temperature above 25.degree. C. made up of, from 50 to 99.9% of a vinylaromatic monomer and from 0.1 to 10% of a polyfunctional crosslinking and/or graft-linking monomer optionally up to 49.9% of one or more copolymerizable monomers; from 5 to 90% of a first shell A2 of elastomeric material made up of from 50 to 99.8% of an alkyl acrylate and/or of a diene, from 0.1 to 10% of a polyfunctional graft-linking monomer, up to 49.8% of one or more copolymerizable unsaturated monomers and from 0.1 to 10% of one or more monomers containing acidic groups; from 5 to 90% of a second shell A3 of rigid material made up of from 50 to 99.9% of a vinylaromatic monomer, up to 10% of a polyfunctional cross-linking and/or graft-linking monomer, up to 49.9% of one or more copolymerizable monomers and from 0.