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    • 4. 发明申请
    • THERMOPLASTIC MOLDING COMPOSITIONS WITH IMPROVED OPTICAL PROPERTIES
    • 具有改进的光学性质的热塑性成型组合物
    • US20110237749A1
    • 2011-09-29
    • US13072099
    • 2011-03-25
    • Matthias MüllerLudger LeberAchim DatkoLeonie Felicitas BraunChristian LemairePiyada CharoensirisomboonMichel Pepers
    • Matthias MüllerLudger LeberAchim DatkoLeonie Felicitas BraunChristian LemairePiyada CharoensirisomboonMichel Pepers
    • C08L51/06C08L33/12C08L33/20
    • C08L33/12C08F285/00C08L25/00C08L51/003C08L51/04C08L2207/53C08L25/12C08F212/08
    • The present invention relates to thermoplastic molding compositions comprising a mixture of (a) from 10 to 50% by weight, based on the entirety of components (A), (B), and (C), of a methyl methacrylate polymer as component (A), and (b) from 20 to 60% by weight, based on the entirety of components (A), (B), and (C), of a copolymer as component (B), obtainable via polymerization of a vinylaromatic monomer and of a vinyl cyanide, and (c) from 20 to 70% by weight, based on the entirety of components (A), (B), and (C), of a graft copolymer as component (C), obtainable from (c1) from 50 to 70% by weight, based on (C), of a core as component (C1), obtainable via polymerization of a 1,3-diene and of a vinylaromatic monomer and an agglomeration polymer, and (c2) from 15 to 25% by weight, based on (C), of a first graft shell as component (C2), obtainable via polymerization of a vinylaromatic monomer, of a C1-C8-alkyl ester of methacrylic acid, and/or of a C1-C8-alkyl ester of acrylic acid, and a crosslinking monomer, and (c3) from 15 to 25% by weight, based on (C), of a second graft shell as component (C3), obtainable via polymerization of a C1-C8-alkyl ester of methacrylic acid as component (C31) and a further monomer as component (C32), where it is essential to the invention that component (C32) is a vinylaromatic monomer and the graft copolymer (C) is produced via emulsion polymerization and is isolated from the reaction mixture by precipitation resulting from shear, and also to processes for producing said molding compositions, to the use of these, and to the moldings obtainable therefrom.
    • 本发明涉及热塑性模塑组合物,其包含(a)10至50重量%,基于组分(A),(B)和(C)的组分(A),(B)和(C))的混合物,所述甲基丙烯酸甲酯聚合物作为组分 A),(b)20〜60重量%,作为成分(B)的共聚物的组分(A),(B)和(C)的全部,可通过乙烯基芳族单体 和(c)20〜70重量%的组分(A),(B)和(C))作为组分(C)的接枝共聚物,可从( c1)基于(C)50〜70重量%的作为组分(C1)的芯可通过1,3-二烯和乙烯基芳族单体和附聚聚合物的聚合获得,和(c2)从 15重量%至25重量%,基于(C),作为组分(C2)的第一接枝壳可通过乙烯基芳族单体聚合得到甲基丙烯酸的C 1 -C 8烷基酯和/或C 1 -C 8烷基酯 丙烯酸的-C8-烷基酯,和a 交联单体和(c3)15至25重量%,基于(C),作为组分(C 3)的第二接枝壳可通过作为组分(C31)的甲基丙烯酸的C 1 -C 8烷基酯的聚合 )和作为组分(C32)的另外的单体,其中本发明组分(C32)是乙烯基芳族单体并且通过乳液聚合制备接枝共聚物(C)是重要的,并且通过沉淀从反应混合物中分离 剪切,以及用于生产所述模塑组合物的方法,使用它们以及由其获得的模制品。