Using aqueous binders in producing abrasive materials
    31.
    发明申请
    Using aqueous binders in producing abrasive materials 失效
    使用含水粘合剂生产磨料

    公开(公告)号:US20040236008A1

    公开(公告)日:2004-11-25

    申请号:US10759240

    申请日:2004-01-20

    IPC分类号: C08K003/00

    摘要: The present invention relates to the use of an aqueous polymer dispersion comprising dispersed particles of at least one polymer A1 having a glass transition temperature, Tg, of from null20null C. to null35null C. and obtainable through free-radical emulsion polymerization in the presence of a polymer A2 synthesized from from 50 to 99.5% by weight of at least one ethylenically unsaturated monocarboxylic and/or dicarboxylic acid whose carboxylic groups can form an anhydride group, or mixtures thereof, from 0.5 to 50% by weight of at least one ethylenically unsaturated compound selected from the esters of ethylenically unsaturated monocarboxylic acids and the monoesters and diesters of ethylenically unsaturated dicarboxylic acids with an amine containing at least one hydroxyl group, and up to 20% by weight of at least one further monomer as binder for producing abrasive material.

    摘要翻译: 本发明涉及包含至少一种玻璃化转变温度Tg为-20℃至+ 35℃的聚合物A1的分散颗粒的聚合物水分散体的使用,可通过自由基乳液聚合获得 在由50至99.5重量%的至少一种其羧基可以形成酸酐基团的烯属不饱和单羧酸和/或二羧酸或其混合物合成的聚合物A2存在下,其浓度为0.5至50重量% 至少一种烯键式不饱和化合物,其选自烯属不饱和单羧酸的酯和烯键式不饱和二羧酸的单酯和二酯与含有至少一个羟基的胺,以及至多20重量%的另外的单体作为粘合剂 生产研磨材料。

    Method for the production of cyclopentanone
    35.
    发明授权
    Method for the production of cyclopentanone 有权
    生产环戊酮的方法

    公开(公告)号:US07803971B2

    公开(公告)日:2010-09-28

    申请号:US11575839

    申请日:2005-09-23

    IPC分类号: C07C45/27 C07C45/28

    摘要: A process for preparing cyclopentanone, at least comprising the following steps (i) to (iii): (i) providing a mixture G(i) comprising cyclopentene; (ii) providing liquid or supercritical N2O or a liquid or supercritical gas mixture G(ii) comprising at least 20% by volume of N2O, based on the total volume of the mixture G(ii); (iii) contacting the mixture G(i) with the liquid or supercritical N2O or the liquid or supercritical mixture G(ii) to obtain a mixture G(iii) comprising cyclopentanone, wherein the mixture G(i) contains at least 25% by weight and at most 95% by weight, of cyclopentene, based on the total weight of the mixture G(i).

    摘要翻译: 至少包括以下步骤(i)至(iii)的环戊酮的制备方法:(i)提供包含环戊烯的混合物G(ⅰ) (ii)基于混合物G(ii)的总体积,提供液体或超临界N 2 O或包含至少20体积%N 2 O的液体或超临界气体混合物G(ⅱ); (iii)使混合物G(i)与液体或超临界N 2 O或液体或超临界混合物G(ii)接触以获得包含环戊酮的混合物G(ⅲ),其中混合物G(ⅰ)含有至少25% 重量和至多95重量%的环戊烯,基于混合物G(i)的总重量。

    Workup of (meth)acrylic acid and (meth)acrylic esters
    38.
    发明申请
    Workup of (meth)acrylic acid and (meth)acrylic esters 审中-公开
    (甲基)丙烯酸和(甲基)丙烯酸酯的后处理

    公开(公告)号:US20040031674A1

    公开(公告)日:2004-02-19

    申请号:US10459612

    申请日:2003-06-12

    发明人: Jurgen Schroder

    摘要: A process for working up mixtures containing (meth)acrylic acid and/or (meth)acrylic ester in a column for distilling, rectifying and/or fractionally condensing in the presence of at least one polymerization inhibitor and an oxygen-containing gas, wherein the partial oxygen pressure p(O2) in the gas phase of the entire column is from 2 to 5 hPa.

    摘要翻译: 一种在柱中加工含有(甲基)丙烯酸和/或(甲基)丙烯酸酯的混合物的方法,用于在至少一种阻聚剂和含氧气体的存在下进行蒸馏,精馏和/或分级冷凝,其中 整列气相中的部分氧气压力p(O2)为2〜5hPa。