Process for the preparation of a thermoplastic moulding composition

    公开(公告)号:DE3206184A1

    公开(公告)日:1982-09-09

    申请号:DE3206184

    申请日:1982-02-20

    Applicant: BASF AG

    Abstract: The invention relates to a process for the preparation of a thermoplastic moulding composition from a copolymer A) containing predominantly styrene, a graft copolymer B) containing predominantly styrene, a polycarbonate C) and optionally additives D), by mixing the components of the moulding composition in the melt in mixing units which have a plurality of feed zones and at least one vent zone. Firstly, the graft copolymer B) is introduced into the first zone of the mixing unit. The melt of the polycarbonate C) is introduced into a second zone of the mixing unit, which, with respect to the conveying direction, is behind the first zone. Preference is given to graft copolymers B) which have a residual moisture content of 5-50% by weight, based on the solid B). The mixtures claimed are suitable for the production of mouldings.

    36.
    发明专利
    未知

    公开(公告)号:DE3106758A1

    公开(公告)日:1982-09-09

    申请号:DE3106758

    申请日:1981-02-24

    Applicant: BASF AG

    Abstract: The invention relates to a process for the manufacture of a mixture of a polycarbonate and a styrene-containing polymer whereby the polycarbonate present in solution is initially brought into contact with a precipitating agent. The solvent and the precipitating agent are subsequently separated from the precipitated solid material to prepare a polycarbonate having residual moisture of more than 1 and less than 50 percent by weight relative to the polycarbonate, and where the resultant product with a residual moisture is mixed with the styrene-containing polymer at temperatures above the softening range of the components removing volatile components. The claimed mixtures are suitable for the manufacture of molded parts for cars, bottles and appliances.

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