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652 条记录 (耗时 0.021 秒)

    Stable and high solids aqueous dispersions of blocked polyisocyanates
    2.
    发明申请
    Stable and high solids aqueous dispersions of blocked polyisocyanates 失效
    封闭多异氰酸酯的稳定和高固体含水分散体

    公开(公告)号：US20020025996A1

    公开(公告)日：2002-02-28

    申请号：US09982237

    申请日：2001-10-19

    申请人： DEGUSSA-HUELS AKTIENGESELLSCHAFT

    发明人： Hartwig Lange ,  Klaus Janischewski ,  Dirk Reichel

    IPC分类号： C08J003/00

    CPC分类号： C07C263/18 ,  C08G18/348 ,  C08G18/706 ,  C08G18/721 ,  C08G18/792 ,  C08G18/8077 ,  C09D175/04 ,  C07C265/14

    摘要： A stable and high-solids aqueous dispersion of blocked isocyanates, containing auxiliary solvent, is prepared by (1) preparing a solution of a polyisocyanate mixture of from 20-70% by weight of a blocked, hydrophilically modified polyisocyanate (A) and from 30-80% by weight of a blocked, hydrophobic polyisocyanate (B) in an auxiliary solvent (G) and (2) adding water to this solution, with intensive mixing, in an amount which is such as to give a two-phase system comprising a disperse polyisocyanate phase and a continuous, aqueous phase containing auxiliary solvent. In a preferred embodiment of the invention dispersions are prepared which are virtually free from auxiliary solvent, by first adding a portion of water to the solution (1), substantially removing the auxiliary solvent with intensive mixing and then adding a second portion of water with intensive mixing to the mixture comprising the polyisocyanates (A) and (B) and the first portion of water.

    摘要翻译： 含有辅助溶剂的封闭异氰酸酯的稳定且高固含量的水分散体是通过（1）制备20-70重量％的封端的亲水改性多异氰酸酯（A）和30重量％的多异氰酸酯混合物 -80重量％的在助溶剂（G）中的封闭的疏水性多异氰酸酯（B）和（2）以强烈混合的方式向该溶液中加入水，其量使得产生两相系统，其包含 分散的多异氰酸酯相和含有辅助溶剂的连续的水相。 在本发明的优选实施方案中，通过首先向溶液（1）中加入一部分水，基本上除去辅助溶剂，同时强烈混合，然后加入第二部分水，制备基本上不含辅助溶剂的分散体 与包含多异氰酸酯（A）和（B）的混合物和第一部分水混合。

    Method for preparing cyclopropanecarboxylic acids
    5.
    发明授权
    Method for preparing cyclopropanecarboxylic acids 失效
    制备环丙烷羧酸的方法

    公开(公告)号：US06166247A

    公开(公告)日：2000-12-26

    申请号：US82968

    申请日：1998-05-22

    申请人： Manfred Kaufhold

    发明人： Manfred Kaufhold

    IPC分类号： C07C27/02 ,  C07C51/09 ,  C07C61/04

    CPC分类号： C07C51/09 ,  C07C61/04

    摘要： The invention relates to a novel method for preparing cyclopropanecarboxylic acids by acidolysis of the corresponding esters, using an alkylbenzenesulfonic acid represented by the formula: ##STR1## as the reaction catalyst, where m+n is 5 to 15. Process-engineering improvements and simplifications are achieved with this process.

    摘要翻译： 本发明涉及通过使用由下式表示的烷基苯磺酸作为反应催化剂，其中m + n为5至15，通过酸解相应的酯制备环丙烷羧酸的新方法。其中m + n为5至15。工艺改进和简化实现了 这个过程。

    Two-component connector
    6.
    发明授权
    Two-component connector 失效
    双组件连接器

    公开(公告)号：US6161879A

    公开(公告)日：2000-12-19

    申请号：US948422

    申请日：1997-10-10

    申请人： Hans Ries ,  Frank Lorenz ,  Guido Schmitz

    发明人： Hans Ries ,  Frank Lorenz ,  Guido Schmitz

    IPC分类号： F16L41/08 ,  B29C45/16 ,  B32B3/06 ,  F16L13/10 ,  F16L47/00 ,  F16L47/24 ,  F16L25/00

    CPC分类号： F16L47/24

    摘要： A connector for connecting an assembly to a pipe, which is highly leakproof with respect to the medium to be transported and is secure against separation under axial load. The connector comprises two materials A and B which swell to different degrees. A part comprising the more strongly swelling material A has, at the junction with the material B, a peripheral connecting lip which is substantially enclosed by the less swelling material B, so that a positive connection is achieved.

    摘要翻译： 一种用于将组件连接到管道的连接器，其相对于要运输的介质是高度防漏的，并且在轴向负载下是防止分离的。 连接器包括膨胀到不同程度的两种材料A和B。 包含较强膨胀材料A的部分在与材料B的接合处具有基本上被较小膨胀材料B包围的周边连接唇缘，从而实现了正的连接。

    Urea- and uretdione-functional polyisocyanates
    7.
    发明授权
    Urea- and uretdione-functional polyisocyanates 失效
    尿素和脲二酮官能的多异氰酸酯

    公开(公告)号：US6156863A

    公开(公告)日：2000-12-05

    申请号：US292374

    申请日：1999-04-15

    申请人： Andreas Wenning

    发明人： Andreas Wenning

    IPC分类号： C07D229/00 ,  C08G18/32 ,  C08G18/79 ,  C08G18/80 ,  C09D5/00 ,  C09D5/03 ,  C09D5/46 ,  C09D175/04

    CPC分类号： C08G18/798 ,  C08G18/8038 ,  C08G2150/20

    摘要： A urea- and uretdione-functional polyaddition compound having free, partially or totally blocked isocyanate groups and having the following structure: ##STR1## wherein the substituents are defined as follows: ##STR2## n: 1-20; R.sub.1 is R or a linear, branched or cyclic alkylene or phenylene radicals having 2-16 carbon atoms;R.sub.2, R.sub.3 are each H, R.sub.4 or a ##STR3## R.sub.4, R.sub.5 are each identical or different hydrocarbon radicals having 1-14 carbon atoms;prepared by reacting isophorone diisocyanate-uretdione with diamine mixtures comprising 1-60 mol % diprimary diamines, 1-98 mol % primary/secondary diamines and 1-98 mol % disecondary diamines.

    摘要翻译： 具有游离，部分或完全封闭的异氰酸酯基团并具有以下结构的脲和脲二酮官能加聚化合物：其中取代基定义如下：n：1-20; R1是R或具有2-16个碳原子的直链，支链或环状亚烷基或亚苯基; R 2，R 3各自为H，R 4或R 4，R 5为相同或不同的具有1-14个碳原子的烃基; 通过异佛尔酮二异氰酸酯 - 脲二酮与包含1-60mol％二元二胺，1-98mol％伯/仲二胺和1-98mol％二中二胺的二胺混合物反应制备。

    Process for the preparation of polyolefinic particle foam
    8.
    发明授权
    Process for the preparation of polyolefinic particle foam 失效
    制备聚烯烃颗粒泡沫的方法

    公开(公告)号：US6136871A

    公开(公告)日：2000-10-24

    申请号：US126078

    申请日：1998-07-30

    申请人： Reinhard Wirobski

    发明人： Reinhard Wirobski

    IPC分类号： C08J9/18 ,  C08J9/20 ,  C08J9/228 ,  C08J9/22

    CPC分类号： C08J9/20 ,  C08J9/18 ,  C08J2203/14 ,  C08J2203/142 ,  C08J2323/16

    摘要： Polyolefinic particle foams containing additives may be produced by a process, which comprises(a) initially charging a pressure-resistant reactor with a dispersion consisting essentially of polyolefin particles and a liquid dispersion medium, and also a mixture of a volatile organic blowing agent and the additive to be introduced;(b) carrying out a heat treatment in which the polyolefin particles are impregnated with the mixture; and subsequently(c) discharging the dispersion through an orifice into a low-pressure space, thus foaming the polymer particles.The process achieves efficient incorporation of the additives into the polyolefin particles. The particle foams thus-obtained are useful for the production of moldings.

    摘要翻译： 含有添加剂的聚烯烃颗粒泡沫体可以通过以下方法制备，该方法包括：（a）最初向具有基本上由聚烯烃颗粒和液体分散介质组成的分散体的耐压反应器中加入挥发性有机发泡剂和 待添加剂; （b）进行聚烯烃颗粒浸渍混合物的热处理; 然后（c）将分散体通过孔口排出到低压空间中，从而使聚合物颗粒发泡。 该方法可有效地将添加剂并入聚烯烃颗粒中。 由此获得的颗粒泡沫可用于制造模制品。