24.
    发明专利
    未知

    公开(公告)号:DE855908C

    公开(公告)日:1952-11-17

    申请号:DEB0007084

    申请日:1943-11-30

    Applicant: BASF AG

    Inventor: STASTNY FRITZ DR

    25.
    发明专利
    未知

    公开(公告)号:DE845391C

    公开(公告)日:1952-07-31

    申请号:DEB0008660

    申请日:1950-08-10

    Applicant: BASF AG

    Inventor: STASTNY FRITZ DR

    30.
    发明专利
    未知

    公开(公告)号:DE1669648A1

    公开(公告)日:1971-05-06

    申请号:DE1669648

    申请日:1966-05-27

    Applicant: BASF AG

    Abstract: 1,179,445. Moulding plastic material. BADISCHE ANILIN- & SODA-FABRIK A.G. 26 May, 1967 [27 May, 1966], No. 24598/67. Heading B5A. [Also in Division C3] Expanded olefin polymer mouldings are prepared by mixing particles of an expanded polymer of ethylene or propylene (whose X-ray crystallinity at 25‹ C. is more than 25%, the particles having a diameter of 3-50 mm. and a bulk density of 5-200 gm/litre) with a curable binder which is free of solvent, compressing the mixture by 5-70% of its original bulk volume in a mould and allowing to cure under pressure. In Example 1 expanded polyethylene particles are mixed with pentaerythritol triglycidyl ether and p,p-diaminodicyclohexylamine and is placed in a wooden mould lined with polyethylene sheeting (25 x 12À5 x 5 cm.) and having a lid of the same material. The contents of the mould are compressed to half their original volume and cured at room temperature. In Example 3 an elevated temperature (70‹ C.) is employed to cure the mixture. Instead of a mould the mixture may be fed between two conveyer belts to form a sheet, or to a channel provided by four conveyer belts to thereby provide a strand.

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