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910 条记录 (耗时 0.015 秒)

    Laminates on the basis of polypropylene and process for preparing such laminates
    83.
    发明公开
    Laminates on the basis of polypropylene and process for preparing such laminates 失效
    基于聚丙烯层压板和制作方法。

    公开(公告)号：EP0142183A1

    公开(公告)日：1985-05-22

    申请号：EP84201370.8

    申请日：1984-09-26

    申请人： STAMICARBON B.V.

    发明人： Lemstra, Pieter Jan ,  Meyer, Henricus Eduard Hubertus ,  Burlet, Rudolf Johannes Hubertus

    IPC分类号： B32B27/08 ,  B32B27/32

    CPC分类号： B32B27/08 ,  B32B27/306 ,  B32B27/32 ,  B32B27/322 ,  B32B2307/52 ,  B32B2307/704 ,  B32B2323/10 ,  Y10S264/73 ,  Y10T428/31913 ,  Y10T428/3192

    摘要： The invention accords to a laminate at least consisting of a first layer from a mixture of at least a propylene polymer and an ethylene-vinylalcohol copolymer and a second layer from at least one propylene polymer, the first layer at least consisting of a mixture of 60-99 parts by weight of a substantially crystalline propylene polymer and 1-40 parts by weight of an ethylene-vinylalcohol copolymer, the second layer at least consisting of a substantially crystalline propylene polymer, the said ethylene-vinylalcohol copolymer having a melting temperature at atmospheric pressure which is at most equal to and not more than 30 K lower then the melting temperature at atmospheric pressure of the one of the substantially crystalline propylene polymers used having the highest melting temperature, and the laminate having been subjected to multi-axial stretching to a degree of at least twice in at least 2 directions at a temperature which at most equals the melting temperature of the one of the substantially crystalline propylene polymers used having the highest melting temperature and to a process for preparing such a laminate.

    Process for the preparation of 6-methylpyridone-2
    90.
    发明公开
    Process for the preparation of 6-methylpyridone-2 失效
    Verfahren zur Herstellung von 6- Methylpyridin-2-on。

    公开(公告)号：EP0123362A1

    公开(公告)日：1984-10-31

    申请号：EP84200561.3

    申请日：1984-04-19

    申请人： STAMICARBON B.V.

    发明人： van der Stoel, Roland Emile ,  Bosma, Marcel Antoine Robert

    IPC分类号： C07D213/08 ,  C07D213/64

    CPC分类号： C07D213/08 ,  C07D213/64

    摘要： The invention relatesto a processforthe preparation of a pyridone-2. The process according to the invention for the preparation of pyridone-2 is characterized in that an oxoalkanecarboxylic acid having as general formula:
    where R 2 and R 3 represent hydrogen or an alkyl group having 1-4 C atoms, or an ester of such an acid is reacted in the gas phase with an amine compound R 1 NH 2 , where R, represents hydrogen or an alkyl group with 1-4 C atoms, at a temperature of 250-450°C in the presence of dehydrogenating catalyst, and a pyridone-2 having as general formula
    where R 1 . R. and R 3 have the meanings described above, is recovered from the resulting mixture.

    摘要翻译： 本发明涉及制备吡啶酮-2的方法。 根据本发明制备吡啶酮-2的方法的特征在于具有以下通式的氧代烷烃羧酸：其中R 2和R 3表示氢或具有1-4个C原子的烷基，或酯 的这种酸在胺化合物R 1 NH 2中反应，其中R 1表示氢或1-4C原子的烷基，在脱氢催化剂存在下，在250-450℃的温度下反应， 从所得混合物中回收具有如下通式的吡啶酮-2：其中R1，R2和R3具有上述含义。