Process for reducing residuals content in vinyl aromatic polymers
    1.
    发明授权
    Process for reducing residuals content in vinyl aromatic polymers 有权
    降低乙烯基芳族聚合物残留物含量的方法

    公开(公告)号:US08541542B2

    公开(公告)日:2013-09-24

    申请号:US12374807

    申请日:2007-07-13

    摘要: The present invention relates to a process for reducing residuals content in a vinyl aromatic polymer, said residuals comprising essentially unpolymerized vinyl aromatic monomer, wherein the vinyl aromatic polymer in the molten state is brought in contact with a solid in powder capable to catalyze the alkylation of said residual vinyl aromatic monomer on the vinyl aromatic polymer. Advantage of the present invention is a sharp reduction of the unpolymerized vinyl aromatic monomer in the vinyl aromatic polymer without generating a new residual and without inducing a colored vinyl aromatic polymer. The present invention also relates to said vinyl aromatic polymer having a low residuals content.

    摘要翻译: 本发明涉及一种减少乙烯基芳族聚合物中残留物含量的方法,所述残余物包含基本上未聚合的乙烯基芳族单体,其中熔融状态的乙烯基芳族聚合物与能够催化烷基化的粉末中的固体接触 所述乙烯基芳族聚合物上的所述残余乙烯基芳族单体。 本发明的优点是在乙烯基芳族聚合物中未聚合的乙烯基芳族单体的急剧减少,而不会产生新的残留物并且不引起着色的乙烯基芳族聚合物。 本发明还涉及具有低残留含量的所述乙烯基芳族聚合物。

    Method for preparing lattice-inserted titanium zeolites, and use thereof
    6.
    发明授权
    Method for preparing lattice-inserted titanium zeolites, and use thereof 失效
    晶格插入钛沸石的制备方法及其用途

    公开(公告)号:US06063944A

    公开(公告)日:2000-05-16

    申请号:US195

    申请日:1998-05-04

    摘要: A method is provided for preparing fully lattice-inserted titanium zeolites by post-synthesis processing of the synthetic zeolite optionally containing titanium with an inorganic acid, wherein the post-synthesis processing comprises processing the zeolite in the presence of at least one titanium source with a solution containing at least one oxidizing inorganic acid having a higher redox potential than an acidic tetravalent titanium solution. The invention is also directed to the use of the zeolites.

    摘要翻译: PCT No.PCT / FR96 / 01209 Sec。 371日期:1998年5月4日 102(e)日期1998年5月4日PCT提交1996年7月31日PCT公布。 出版物WO97 / 05060 日期1997年2月13日提供了一种用于通过后处理合成沸石制备完全晶格插入的钛沸石的方法,所述合成沸石任选地含有钛与无机酸,其中后合成工艺包括在至少存在下处理沸石 一种钛源与含有至少一种具有比酸性四价钛溶液更高的氧化还原电位的氧化性无机酸的溶液。 本发明还涉及沸石的用途。

    Process for Reducing Residuals Content in Vinyl Aromatic Polymers
    10.
    发明申请
    Process for Reducing Residuals Content in Vinyl Aromatic Polymers 有权
    降低乙烯基芳族聚合物残留物含量的方法

    公开(公告)号:US20100113707A1

    公开(公告)日:2010-05-06

    申请号:US12374807

    申请日:2007-07-13

    IPC分类号: C08F8/02

    摘要: The present invention relates to a process for reducing residuals content in a vinyl aromatic polymer, said residuals comprising essentially unpolymerized vinyl aromatic monomer, wherein the vinyl aromatic polymer in the molten state is brought in contact with a solid in powder capable to catalyze the alkylation of said residual vinyl aromatic monomer on the vinyl aromatic polymer.Advantage of the present invention is a sharp reduction of the unpolymerized vinyl aromatic monomer in the vinyl aromatic polymer without generating a new residual and without inducing a colored vinyl aromatic polymer.The present invention also relates to said vinyl aromatic polymer having a low residuals content.

    摘要翻译: 本发明涉及一种减少乙烯基芳族聚合物中残留物含量的方法,所述残余物包含基本上未聚合的乙烯基芳族单体,其中熔融状态的乙烯基芳族聚合物与能够催化烷基化的粉末中的固体接触 所述乙烯基芳族聚合物上的所述残余乙烯基芳族单体。 本发明的优点是在乙烯基芳族聚合物中未聚合的乙烯基芳族单体的急剧减少,而不会产生新的残留物并且不引起着色的乙烯基芳族聚合物。 本发明还涉及具有低残留含量的所述乙烯基芳族聚合物。