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    1.
    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

    Inventor： STASTNY FRITZ DR ,  GAETH RUDOLF DR ,  TRIESCHMANN HANS-GEORG PROF DR ,  ZIZLSPERGER JOHANN DR

    IPC: B29C67/20 ,  C08J9/22 ,  C08J9/236 ,  C22C14/00 ,  C08F47/10

    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.

    6.
    发明专利
    未知

    公开(公告)号：DE1669713A1

    公开(公告)日：1971-03-25

    申请号：DE1669713

    申请日：1967-08-16

    Applicant: BASF AG

    Inventor： GAETH RUDOLF DR ,  PFANNMUELLER HELMUT DR ,  STASTNY FRITZ DR ,  TRIESCHMANN HANS-GEORG PROF DR ,  TATZEL HERMANN ,  ZIZLSPERGER JOHANN DR

    IPC: C08G18/62 ,  C08J9/00 ,  C08F47/10

    Abstract: 1,227,454. Expanded ethylene/ester copolymers. BADISCHE ANILIN- & SODAFABRIK A.G. 15 Aug., 1968 [16 Aug., 1967], No. 39077/68. Headings C3C and C3P. A cross-linked expanded polymer is produced by mixing, e.g. in an extruder, a thermoplastic copolymer of ethylene with a vinyl ester of a saturated acid or an ester-of an ethylenically unsaturated acid in the plastic condition with a polyisocyanate and an expanding agent under such pressure that the copolymer is not expanded followed by decompression to allow expansion. The ethylene copolymer may contain units derived from vinyl acetate or acrylic acid and n-hexyl, ethyl or n- or tert-butyl acrylate. The polyisocyanate may be 4,4 1 - dicyclohexylmethane di-isocyanate or its 3,3 1 - dimethyl derivative; others are also exemplified. The expanding agent may be a mixture of iso- and n-butane and/or dichlorodifluoromethane, propane or neopentane or azodicarbonamide or p,p 1 - oxybenzene - sulphohydrazide. Talc may be used as a nucleating agent. The copolymer mixture may also contain polybutene, polyisobutylene or polypropylene and zinc oxide.

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