Process for Reducing Residuals Content in Vinyl Aromatic Polymers
    13.
    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。

    Method for preparing lattice-inserted titanium zeolites, and use thereof
    17.
    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。

    Method for desulfurizing thiophene derivatives contained in fuels
    19.
    发明授权
    Method for desulfurizing thiophene derivatives contained in fuels 失效
    燃料中所含噻吩衍生物的脱硫方法

    公开(公告)号:US07179368B2

    公开(公告)日:2007-02-20

    申请号:US10169030

    申请日:2000-12-28

    IPC分类号: C10G17/02 C10G27/04 C10G17/00

    摘要: The invention concerns a method for selectively desulphurizing thiopene compounds contained in hydrocarbons derived from crude oil distillation, whether refined or not, which consists in oxidising the thiophene sulphur atoms into sulphone in the presence of an oxidising agent and in separating said sulphonated compounds from said hydrocarbons. The invention is characterised in that it consists in oxidising the thiophene compounds in a two-phase turbulent medium comprising a hydrocarbon phase and an aqueous phase, in the presence of at least an oxidising agent soluble in at least one of the two phases and of at least a metal catalyst in soluble or dispersed form in a liquid of in solid form, separation and oxidation occurring simultaneously.

    摘要翻译: 本发明涉及一种用于选择性脱硫原油蒸馏中衍生的烃中所含的硫代辛烷化合物的方法,无论是否纯化,其包括在氧化剂存在下将噻吩硫原子氧化成砜,并将所述磺化化合物与所述烃分离 。 本发明的特征在于其在包含烃相和水相的两相湍流介质中在至少可溶于两相中的至少一个的氧化剂存在下氧化噻吩化合物,并且在 至少一种可溶或分散形式的金属催化剂在固体形式的液体中,分离和氧化同时发生。