Abstract: A thermoplastic molding composition comprising, (A) an aromatic polycarbonate; (B) a single rubber-free copolymer, e.g., of styrene and acrylonitrile; (C) a first graft polymer; (D) a second graft polymer; and (E) a wax, is described. The single rubber-free copolymer (B), and first and second graft polymers (C) and (D) are prepared from a specific selection of graft phases and graft bases. The graft base of the first graft polymer (C) comprises a crosslinked, particulate elastomer having an average particle diameter of 0.05 to 0.5 microns. The second graft polymer (D) has an average particle diameter of 0.6 to 20 microns. The thermoplastic compositions of the present invention are well suited for the preparation of molded articles that may be metalized over at least a portion of their surface by means of an electroless plating process. Such electroless plated articles are characterized as having improved heat resistance and adhesion of the metal plating.

Abstract: A method of producing ABS moulding compositions wherein a solution of polymers in group (A) solvents is gradually supplied to a polymerizing mixture of previously-formed soluble rubber, aromatic mono-alkenyl compounds, ethylenically unsaturated nitrites, optional other copolymerizable compounds and optionally a group (B) solvent or a mixture of group (A) and group (B) solvents, the gradual addition of the polymer solution to the polymerizing mixture being started before the beginning of phase inversion and at a monomer conversion rate of 5 to 15% and a viscosity of the polymerizing mixture of less than 20 Pa.sec with simultaneous continuation of polymerization, the group (A) solvent is an aliphatic (C.sub.1 -C.sub.8) or cycloaliphatic alcohol, ketone, ether, ester and/or nitrile, and the group (B) solvent is an aliphatic (C.sub.4 -C.sub.10), cycloaliphatic and/or aromatic hydrocarbon.

Abstract: Compositions of the ABS type containingA) one or more graft rubbers ofA.1) from 10 to 60 parts by weight of one or more monomers onA.2) from 40 to 90 parts by weight of one or more rubber backbones having glass transition temperatures <0.degree.C. andB) at least one rubber-free thermoplastic resin obtained by radical polymerisation of resin-forming monomers,wherein the rubber backbone A.2) has average particle diameters (d.sub.50 values) of from 0.20 to 0.35 .mu.m and the graft rubber A) has been produced by radical emulsion graft polymerisation with the use of an initiator system comprising organic hydroperoxide and an organic reducing agent, and the use thereof for the production of mouldings by deep drawing.

Abstract: N-Substituted cyclic imides are obtained by reacting a cyclic acid anhydride with an amine in the presence of a solvent and an acid catalyst at 80.degree. to 200.degree. C. and with removal of the water formed, it being particularly advantageous to carry out this reaction in the presence of a stabilizer and an inert, dipolar aprotic cosolvent, optionally to add an inert organic solvent of low or zero polarity to the reaction mixture present after the reaction, to add a non-aqueous base in an amount of 0.5 to 50% by weight, based on the cyclic anhydride of the formula (II) used, and to separate off the precipitate formed to give a filtrate containing the N-substituted cyclic imide.

Abstract: Thermoplastic moulding compositions of the ABS type ofI) at least one graft copolymer which is obtainable by emulsion polymerization of styrene and acrylonitrile in the weight ratio 90:10 to 50:50, wherein styrene and/or acrylonitrile can be completely or partly replaced by .alpha.-methylstyrene, methyl methacrylate or N-phenylmaleimide, in the presence of at least two butadiene polymer latices of types (A) and (B), which each contain, copolymerized, 0 to 50 wt. % of a further vinyl monomer, and wherein the weight ratio of monomers used to butadiene polymers used is 25:75 to 70:30, andII) at least one copolymer of styrene and acrylonitrile in the weight ratio 90:10 to 50:50, wherein styrene and/or acrylonitrile can be completely or partly replaced by .alpha.-methylstyrene, methyl methacrylate or N-phenylmaleimide, characterized in that the butadiene polymer latex (A) has a particle diameter d.sub.50 .ltoreq.320 nm, a width of the particle size distribution (measured as d.sub.90 -d.sub.

Abstract: Thermoplastics built up from N-(2-ethyl-6-methyl)phenylmaleimide and styrene, it being possible for all or some of the styrene to be replaced by at least one other monomer component.

Abstract: Thermoplastics built up from N-(2-ethyl-6-methyl)phenylmaleimide and styrene, it being possible for all or some of the styrene to be replaced by at least one other monomer component.

Abstract: Thermoplastic moulding compositions containingA) 5 to 95 parts by wt of at least one particle-shaped graft rubber polymer of the ABS type manufactured by emulsion polymerization, in which the graft rubber particles have such a structure detectable by transmission electron microscope photographs, in which the individual particles contain irregular cell-shaped inclusions of resin-forming polymer and the surface of the particles shows such an irregular toothed structure, that for every particle imaged 5 to 30 of such teeth are present, which are distinguished from an idealized round particle (with a diameter d) by a diameter d+d/x with x=3 to 15,B) 95 to 5 parts by wt of at least one particle-shaped graft rubber polymer of the ABS type manufactured by emulsion polymerization, in which the graft rubber particles have such a structure detectable by transmission electron microscope photographs, in which the individual particles do not have a pronounced inner structure as in A) and possess a round particle shape wit

Abstract: Thermoplastic moulding compositions comprisingA) 1 to 60 parts by weight of at least one particulate graft rubber polymer of the ABS type which is produced by emulsion polymerisation, in which at least 50% of the graft rubber particles (number) have a structure detectable via transmission electron microscopy photographs in which the individual particles contain irregular cellular inclusions of resin-forming polymer and the surface of the particles has an irregular jagged structure such that 5 to 30 of such peaks are present per depicted particle, which particles differ from an idealised round particle (having a diameter d) by a diameter d+d/x, where x=3 to 15,B) 40 to 99 parts by weight of at least one particulate graft rubber polymer of the ABS type which is produced by solution or bulk polymerisation and which has the morphology which is characteristic of bulk types of ABS, and optionallyC) 0 to 200 parts by weight of at least one thermoplastic, rubber-free resin.

Abstract: Moulding compounds the ABS type consisting of at least one resin matrix and a particulate graft-rubber polymer distributed therein and produced by emulsion polymerisation, wherein at least 70% of the graft-rubber particles (number) exhibit a structure of the rubber phase which can be detected by photographs taken with the aid of a transmission electron microscope and in which the individual particles contain irregular cellular inclusions of resin-forming polymer and the surface of the particles exhibits an irregularly jagged structure such that, for each particle illustrated, 5 to 30 of such jagged projections are present which differ from an idealised round particle (with a diameter d) by virtue of a diameter d+d/x with x=3 to 15, as well as a process for the manufacture of said moulding compounds.

Abstract: Thermoplastic molding compounds of the ABS type ofA) at least one graft polymer obtainable by emulsion polymerization of styrene and acrylonitrile in a ratio by weight of 90:10 to 50:50, the styrene and/or acrylonitrile being completely or partly replaceable by .alpha.-methyl styrene, methyl methacrylate or N-phenyl maleic imide, in the presence of at least two butadiene polymer latices of type (A) and (B), of which each contains 0 to 50% by weight of another vinyl monomer in copolymerized form, the ratio by weight of the monomers used to the butadiene polymers used being 25:75 to 70:30, andB) at least one copolymer of styrene and acrylonitrile in a ratio by weight of 90:10 to 50:50, the styrene and/or acrylonitrile being completely or partly replaceable by .alpha.-methyl styrene, methyl methacrylate or N-phenyl maleic imide,characterized in that the butadiene polymer latex (A) has a particle diameter d.sub.50 of .ltoreq.250 nm, a width of the particle size distribution (measured as d.sub.90 -d.sub.

Abstract: ABS polymer compositions consisting ofA) 5 to 80 parts by weight of at least one ABS polymer prepared by mass polymerization or solution polymerization, having rubber particles with an average particle diameter of from 800 to 15,000 nm and a rubber content of from 1 to 20% by weight,B) 1 to 50 parts by weight of at least one ABS polymer prepared by emulsion polymerization, having an average particle diameter of from 50 to 500 nm and a rubber content of from 20 to 80% by weight,C) 0 to 70 parts by weight of at least one thermoplastic vinyl resin prepared by radical polymerization of at least two monomer components selected from styrene, .alpha.-methylstyrene, methyl methacrylate, acrylonitrile, N-phenylmaleimide andD) 0.5 to 10 parts by weight of at least one polybutadiene prepared by emulsion polymerization, having an average particle diameter d.sub.50 in the latex form of from 80 to 500 nm and a gel content of from 10 to 95% by weight.

Abstract: The invention relates to a mixture of(A) ABS graft polymer and(B) 0.05 to 2% by weight (based on the mixture) of a polyether- or polyester-grafted siliconewith improved surface gloss.

Abstract: Novel vulcanizable mixtures comprising silicone-core, acrylate-shell rubber particles dispersed within a fluorocarbon rubber.

Abstract: A mixture which is suitable as a defoamer, especially for ABS latices, comprising (A) a C.sub.10 -C.sub.20 alcohol, (B) a mineral oil, (C) an ester from a thiodicarboxylic acid with 4 to 8 carbon atoms and a C.sub.10 -C.sub.20 alcohol and (D) a non-ionic emulsifier and a process for removing residual monomers from ABS latices using these defoaming mixtures.

Abstract: Thermoplastic molding compounds containingA. 10 to 99 parts by weight polycarbonate or polyester carbonateB. 0 to 90 parts by weight of a rubber-free resin compatible or partly compatible with component A.,C. 0 to 90 parts by weight of a rubber-modified resin compatible or partly compatible with component A.,D. 0.5 to 10 parts by weight, based on 100 parts by weight of A+B+C, of a rubber component having a glass transition temperature below 0.degree. C. which is incompatible with component A,characterized in that component D is used in the form of a powder mixture D* produced froma. 1 to 50 parts by weight of an ungrafted particulate rubber component having a glass transition temperature below 0.degree. C. and an average particle diameter d.sub.50 of 0.05 to 5 .mu.m in latex form andb. 50 to 99 parts by weight of component B, component C or a mixture of components B and C in latex form,the components mentioned under a. and b.

Abstract: Process for pretreating abietic acid derivatives comprising dissolving an abietic derivative in water to form a 2 to 25% by weight solution, adding a base so that the pH of the solution is from 10 to 14 and removing from 0.5 to 25% by weight of the abietic acid derivative originally present in the solution by extraction or steam distillation while maintaining the pH from 10 to 14.

Abstract: Powdery mixture of from 1 to 99 weight % of a graft polymer of resin-forming monomers on a rubber and from 99 to 1 weight % of a bisphenol and the use thereof for improving chemical materials.

Abstract: The present invention relates to fluoropolymers with improved temperature resistance and dimensional stability in the heat based on fluoroethylenes, using perfluoro-(cycloalkyl-vinyl ethers) and optionally other monomers as comonomers. The invention also relates to the perfluor-(cycloalkyl-vinyl ethers) which impart the advantageous thermal properties to the fluoropolymers according to the invention.

Abstract: Thermoplastic molding compositions containingA) ABS-type resin,B) aromatic polycarbonate resins,C) a compound bearing several carboxyl groups or mixtures thereof and optionallyD) further polymer resins,characterized in that an ABS resin with at least one basically acting additive is used as component A, component C is selected from compounds having a molecular weight of from 150 to 260 having at least two carboxyl groups (--COOH) in the molecule, and the weight ratio of basically acting additive in A: carboxyl groups in C is from 5:1 to 1:1.