Scorch-delaying composition
    3.
    发明授权
    Scorch-delaying composition 有权
    焦烧延迟成分

    公开(公告)号:US07829634B2

    公开(公告)日:2010-11-09

    申请号:US11575103

    申请日:2005-09-16

    IPC分类号: C08F4/00

    CPC分类号: C08K5/0008 C08F8/30 C08L21/00

    摘要: The invention relates to scorch prevention and, more specifically, to a composition which comprises a nitroxide and at least one organic peroxide and which can be used to delay scorching prior to crosslinking of thermoplastic compositions and/or elastomers. The invention also relates to a crosslinkable composition and to a crosslinking method.

    摘要翻译: 本发明涉及防焦烧,更具体地说涉及包含氮氧化物和至少一种有机过氧化物的组合物,其可用于在热塑性组合物和/或弹性体交联之前延迟焦烧。 本发明还涉及可交联组合物和交联方法。

    Process for obtaining isophorone
    6.
    发明授权
    Process for obtaining isophorone 失效
    获得异佛尔酮的方法

    公开(公告)号:US5849957A

    公开(公告)日:1998-12-15

    申请号:US808117

    申请日:1997-02-28

    CPC分类号: B01J21/10 C07C45/74

    摘要: The present invention relates to a process for obtaining isophorone from acetone, characterized in that the operation is carried out (i) in liquid phase in the presence of a magnesium aluminum double oxide of formula Mg.sub.1-x Al.sub.x O.sub.1+x or (ii) either in gaseous or liquid phase in the presence of a catalyst of general formula (I): �(Mg.sup.2+).sub.1-x (Al.sup.3+).sub.x (OH.sup.-).sub.2 !.sup.x+ �(OH.sup.-).sub.x !.sup.x- (H.sub.2 O).sub.n (I) with 0.20.ltoreq.x.ltoreq.0.33 and n

    摘要翻译: 本发明涉及一种从丙酮获得异佛尔酮的方法,其特征在于:(i)在式Mg1-xAlxO1 + x的镁铝双氧化物存在下,在液相中进行操作,或(ii)气态 (I):[(Mg2 +)1-x(Al3 +)x(OH-)2] x + [(OH-)x] x-(H2O)n(I))的催化剂存在下, 其中0.20≤x≤0.33且n <1。

    Synthesis of n-perfluorooctyl bromide
    10.
    发明授权
    Synthesis of n-perfluorooctyl bromide 失效
    正全氟辛基溴的合成

    公开(公告)号:US5545776A

    公开(公告)日:1996-08-13

    申请号:US453931

    申请日:1995-05-30

    IPC分类号: C07C17/10 C07C19/08 C07C19/07

    CPC分类号: C07C17/10

    摘要: The invention relates to the preparation of n-perfluorooctyl bromide. The continuous process according to the invention consists in reacting bromine with 1-hydroheptadecafluoro-n-octane in the gaseous phase, at a temperature between 450.degree. and 520.degree. C. in a Br.sub.2 /C.sub.8 F.sub.17 H mole ratio which can be from 0.2 to 5 and with a contact time between 2 and 240 seconds.The C.sub.8 F.sub.17 Br selectivity is almost complete and information of toxic sub-products like perfluoroisobutene is avoided.

    摘要翻译: 本发明涉及正全氟辛基溴的制备。 根据本发明的连续方法在于使溴与1-羟基十五氟正辛烷在气相中在450℃和520℃之间的温度下以Br2 / C8F17H摩尔比反应,其摩尔比可以为0.2-5,和 接触时间在2到240秒之间。 C8F17Br选择性几乎完成,避免了全氟异丁烯等有毒副产物的信息。