Abstract: The present invention relates to a thermoplastic molding composition comprising a) 77.7% to 99.7% by weight of one or more styrene copolymers, as component A b) 0.1% to 5% by weight of the compounds of the formulae I, II, III, IV, and V, or isomers thereof, as component B: c) 0.2% to 0.7% by weight of a compound of the formula (VI), as component C: d) 0.2% to 0.7% by weight of a mixture of the formula (VII), as component D: e) 0% to 0.5% by weight of a compound of the formula (VIII) as component E: ?or 0% to 0.5% by weight of a compound of the formula (X): ?or 0% to 0.5% by weight of a compound of the formula (XI): f) 0% to 10% by weight of one or more additives which are different from components B, C, D, and E, as component F, and the percentage by weight being based in each case on the total weight of components A to F and together making up 100% by weight.
Abstract: Process for producing a polymer-graphite nanocomposite, which comprises the steps a) oxidation of graphite to graphite oxide, b) conversion of the graphite oxide into an aqueous dispersion, c) mixing of the aqueous dispersion comprising graphite oxide or, if appropriate, reduced graphite oxide which is obtained from b) with an aqueous polymer dispersion comprising at least one polymer and d) separating off the polymer-graphite mixture from the aqueous phase, wherein the graphite oxide which has been oxidized in step a) is reduced to graphite between step b) and c) or between step c) and d).
Abstract: A mixture which comprises from 5 to 50% by weight of a block copolymer A, which comprises one or more copolymer blocks (B/S)A each composed of from 65 to 95% by weight of vinylaromatic monomers and from 35 to 5% by weight of dienes and of a glass transition temperature TgA in the range from 40° to 90° C.; from 95 to 50% by weight of a block copolymer B, which comprises at least one hard block S composed of vinylaromatic monomers and comprises one or more copolymer blocks (B/S)B each composed of from 20 to 60% by weight of vinylaromatic monomers and from 80 to 40% by weight of dienes and of a glass transition temperature TgB in the range from ?70° to 0° C.; from 0 to 45% by weight of polystyrene or of a block copolymer C other than A and B; and from 0 to 6% by weight of a plasticizer; and its use for production of shrink films.
Type:
Grant
Filed:
December 31, 2005
Date of Patent:
July 28, 2015
Assignee:
Styrolution Europe GmbH
Inventors:
Konrad Knoll, Helmut Steininger, Michael Schuster, Daniel Wagner, Peter Merkel
Abstract: Molding compositions comprising: a composition (I) present in an amount of 10 to 100% by weight, based on the molding composition, wherein the composition (I) comprises: (A) 40 to 95% by weight, based on the composition (I), of a copolymer comprising: ?-methylstyrene in an amount of 55 to 90% by weight, acrylonitrile in an amount of 10 to 50% by weight, and one or more other monomers in an amount of 0 to 5% by weight, wherein the percentages by weight of the ?-methylstyrene, the acrylonitrile and the one or more other monomers are based on the weight of component (A); (B) 2.5 to 75% by weight, based on the composition (I), of a polymer comprising: a vinylaromatic monomer in an amount of 60 to 90% by weight, acrylonitrile in an amount of 8.01 to 39.8% by weight, and maleic anhydride in an amount of 0.2 to 1.99% by weight, wherein the percentages by weight of the vinylaromatic monomer, the acrylonitrile and the maleic anhydride are based on the weight of component (B); and (C) 2.
Type:
Grant
Filed:
June 13, 2006
Date of Patent:
April 28, 2015
Assignee:
Styrolution Europe GmbH
Inventors:
Martin Weber, Klaus Muehlbach, Peter Ittemann, Stefan Grutke, Nicolas Inchaurrondo