Basf Aktiengesellschaft

Karl Ruppmich

Friedrich Seitz

Norbert Niessner

Norbert Guentherberg

Wolfgang Fischer

Erhard Seiler

Rainer Neumann

Doris Zeltner

Klaus Benker

Hermann Gausepohl

Klaus Muehlbach

Michael Portugall

Walter Heckmann

Dietrich Lausberg

Manfred Knoll

Robert Weiss

Rainer Moors

Rainer Bueschl

Ehrenfried Baumgartner

Hermann Brandt

Josef Schwaab

Georg Wassmuth

Juergen Vietmeier, Deceased

A molding composition based on an impact-modified thermoplastic A selected from ABS, ASA, impact-resistant polystyrene (HIPS) impact resistant polymethyl methacrylate, impact resistant PVC, polycarbonate, polyester carbonate, polyester, polyamide, polyphenylene ether, polyether ketone, polyether sulfone, polysulfone, polyoxyalkylene, polyarylene sulfide and also mixtures thereof containing a matting agent B composed of 30 to 80% by weight of an elastomeric grafting base B1 of 75 to 99.8% by weight of an alkyl acrylate having 1 to 8 carbon atoms in the alkyl radical (B11), 0.1 to 5% by weight of a polyfunctional, crosslinking monomer (B12) and 0.1 to 20% by weight of a monomer containing one or more acidic groups, or 49.9 to 99.9% by weight of one or more dienes (B111), up to 50% by weight of a further ethylenically unsaturated monomer (B112) and 0.1 to 20% by weight of a monomer containing one or more acidic groups (B113), and 20 to 70% by weight of a graft sheath B2 composed of 40 to 99.9% by weight of an aromatic vinyl monomer (B21), up to 49.9% by weight of a polar, copolymerizable, ethylenically unsaturated monomer (B22) and 0.1 to 20% by weight of a monomer containing one or more basic groups (B23), and also a molding composition whose constituents B13 and B113 and B23 are interchanged.

Molding composition having a matt surface

A molding material from a particulate graft polymer which consists of

Molding material from a particulate graft polymer

A particulate graft polymer comprising A: 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, and A3: from 0.1 to 10% by weight of one or more monomers A3 containing one or more acid groups, or A11: 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, and B: 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, and B3: from 0.1 to 10% by weight of one or more monomers B3 containing one or more basic groups.

Particulate graft polymer, and thermoplastic molding material produced

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 0.1 to 20% of a monomer containing one or more basic groups; and optionally up to 85% of a third shell A4 of a copolymer of, from 1 to 99% of one or more vinylaromatic monomers and from 1 to 99% of one or more copolymerizable monomers. The percentages are by weight and based, in the case of the monomers, on the core or shells to which they belong and, in the case of the core and shells A1-A4, on the sum of A1 to A4.

Impact modifier and molding material containing it

A molding composition containing, based on the total weight of the composition:

Flameproofed chlorine-and bromine-free molding composition

A particulate graft polymer comprises from 30 to 90% by weight, of at least one elastomeric polymer A having a median particle size of from 30 to 1000 nm comprising--based on A--from 85 to 99.8% by weight of at least one alkyl acrylate A1 having from 1 to 8 carbon atoms in the alkyl moiety, from 0.1 to 5% by weight of at least one polyfunctional, crosslinking monomer A2 and from 0.1 to 10% by weight of at least one further monoethylenically unsaturated monomer as grafting base, and from 10 to 70% by weight, grafted onto the elastomeric polymer A, of a sheath B comprising--based on B--from 50 to 90% by weight of at least one aromatic vinyl monomer B1 and from 10 to 50% by weight of at least one polar, copolymerizable, ethylenically unsaturated monomer B2, wherein monomer A3 is a hydroxyalkyl acrylate or methacrylate.

Particulate graft polymer with improved adhesion between grafting base

A flame retardant molding composition contains a halogen-free polycarbonate at least one halogen-free graft copolymer assembled from copolymerized units of an elastomer and certain ethylenically unsaturated monomers which include 1-50% by weight of an organic phosphorus compound of the formula (I) ##STR1## a halogen-free thermoplastic copolymer comprising styrene, .alpha.-alkylstyrene, nuclear-substituted styrene and/or C.sub.1 -C.sub.8 -alkyl (meth)acrylate, and (meth)acrylonitrile and/or maleic anhydride, as well as 1-46% by weight of a halogen-free phosphorus compound of the formula (I): Optionally a monophosphate additive and up to 5% by weight of a polytetrafluoroethylene with a median particle size of from 0.05 to 20 .mu.m may be added.

Flameproofed molding composition

Thermoplastic molding materials which have high gloss and are readily colored and comprise a first graft copolymer A of an elastomeric, crosslinked acrylate polymer as the graft base and a graft shell made from a vinyl-aromatic monomer and a polar, copolymerizable, ethylenically unsaturated monomer, and a second separately prepared graft copolymer B of an elastomeric crosslinked acrylate polymer as the graft base, which is different from that in A and has a larger mean particle diameter than the graft base of copolymer A, having a first graft shell of a vinyl-aromatic monomer and a second graft shell of a mixture of a vinyl aromatic monomer and a polar-copolymerizable, ethylenically unsaturated monomer, and a hard matrix C.

Thermoplastic molding material based on graft copolymers with bimodal

Thermoplastic molding materials having good low-temperature impact

A thermoplastic molding material containing (based on the sum of A+B+C)

Hermoplastic molding material of improved toughness

Thermoplastic molding compositions based on thermoplastic polyesters (a.sub.1), graft polymers incorporating acrylate rubbers as grafting bases (a.sub.2), copolymers of aromatic vinyl monomers and acrylonitrile or methacrylonitrile (a.sub.3) which contain a polymeric component (B) having carboxyl, carboxyl derivative, hydroxyl or epoxy groups or, alternatively, where graft polymers (a.sub.2) or copolymers (a.sub.3) carry such groups have a balanced range of properties.

Glass fiber reinforced thermoplastic molding compositions based on

A thermoplastic molding material containing, based on components A, B and C,

Thermoplastic molding material based on polycarbonate, ASA and

A thermoplastic material containing, based in each case on the molding material comprising A and B,

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Ludwigshafen, Germany

Karl Ruppmich