Polystyrene moulding materials for prepnof foam bodies

    公开(公告)号:DE2019945A1

    公开(公告)日:1971-11-04

    申请号:DE2019945

    申请日:1970-04-24

    Applicant: BASF AG

    Abstract: Materials composed of styrene polymers, hydrocarbons or fluorine-containing halogen hydrocarbons as blowing agents and a cell regulator and other additives, contain 0.1 - 8 wt.% polyisobutylene of M.W. 1000 - 100000 and 0.5 - 5 wt.% of an ester of phthalic acid or of an aliphatic acid with 10- 40 C atoms. Pref. shaped articles of foam polystyrene are prepared by extruding the above material. Advantages lie in the increased resistance to cold, improved ductility and the finer, more homogeneous cell-structure.

    48.
    发明专利
    未知

    公开(公告)号:FI107051B

    公开(公告)日:2001-05-31

    申请号:FI955641

    申请日:1995-11-23

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP94/01631 Sec. 371 Date Nov. 21, 1995 Sec. 102(e) Date Nov. 21, 1995 PCT Filed May 20, 1994 PCT Pub. No. WO94/28058 PCT Pub. Date Dec. 8, 1994Extruded foam boards produced using halogen-free blowing agents from a styrene polymer thermoplastic matrix having a Vicat softening temperature VST B 50 of at most 100 DEG and a melt index MVI 200/5 of at least 5 ml/10 min are at least 20 mm, preferably more than 50 mm and in particular from 80 to 200 mm, thick. Preferred blowing agents for producing the foam boards are carbon dioxide alone, as well as mixtures of carbon dioxide and ethanol and/or dimethyl ether.

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