Preparation of biuret-containing polyisocyanates
    3.
    发明授权
    Preparation of biuret-containing polyisocyanates 失效
    制备含缩二脲的聚异氰酸酯

    公开(公告)号:US07022874B2

    公开(公告)日:2006-04-04

    申请号:US08894156

    申请日:1996-02-01

    摘要: A process for the preparation of polyisocyanates which contain one or more biuret groups, by reacting a) an aliphatic or cycloaliphatic isocyanate containing two or more isocyanate groups (isocyanate a) with b) a tertiary alcohol or a mixture of water and a tertiary alcohol (biuretizing agent b) at from 100 to 250° C., which comprises carrying out the reaction in the presence c) of a stabilizer (c) which constitutes a catalytic amount of urea, ammonia, biuret, a urea derivative of the formula I in which R1, R2, R3 and R4 are hydrogen, C1 to C10 alkyl or C5 to C10 aryl, or a carboxamide of the formula II in which R5 is C1 to C12 alkyl which is unsubstituted or in which 1, 2 or 3 hydrogen atoms are replaced by a radical

    摘要翻译: 一种制备含有一个或多个缩二脲基团的多异氰酸酯的方法,通过使a)含有两个或多个异氰酸酯基团(异氰酸酯a)的脂族或脂环族异氰酸酯与b)叔醇或水与叔醇的混合物 缩合剂b)在100至250℃下进行,其包括在c)中进行反应,c)稳定剂(c)构成催化量的尿素,氨,缩二脲,式I的脲衍生物在 其中R 1,R 2,R 3和R 4是氢,C 1〜 C 1 -C 10烷基或C 5至C 10芳基或式II的甲酰胺,其中R 5, C 1 -C 12烷基是未被取代的或其中1,2或3个氢原子被基团取代的C 1 -C 12烷基

    Process for treating water in a treatment plant
    10.
    发明授权
    Process for treating water in a treatment plant 有权
    处理厂处理水的方法

    公开(公告)号:US08062525B2

    公开(公告)日:2011-11-22

    申请号:US12333945

    申请日:2008-12-12

    IPC分类号: C02F3/00

    摘要: The process according to the invention for treating water in a treatment plant comprising a reaction chamber in which a biodegradable material present in the water is biodegraded at least partly by microorganisms, in the course of which, at least temporarily, water is transferred out of the reaction chamber into a separating chamber and the biodegradable material and the microorganisms are separated at least partly from the water therein, a return stream comprising biodegradable material and at least some of the microorganisms flowing out of the separating chamber into the reaction chamber via a recycle line, is characterized in that at least some of the following substances: a) the biodegradable material and b) the microorganisms are treated with ozone (O3), an amount of 15 to 150 milligrams of ozone per kilogram of dry substance of the biodegradable material and of the microorganisms being added per hour in the reaction chamber.

    摘要翻译: 根据本发明的用于在处理设备中处理水的方法,其包括反应室,其中存在于水中的可生物降解的材料至少部分地被微生物降解,其中至少暂时将水从 反应室进入分离室,并且所述可生物降解的材料和所述微生物至少部分地与其中的水分离,所述返回流包含可生物降解的材料,并且所述微生物中的至少一些通过再循环管线流出所述分离室进入所述反应室 其特征在于,至少一些以下物质:a)生物可降解材料和b)微生物用臭氧(O 3)处理,每千克干物质的可生物降解材料含有15至150毫克臭氧, 的微生物在反应室中每小时加入。