Hydrazides of amino-polyacetic acids as chelants
    103.
    发明授权
    Hydrazides of amino-polyacetic acids as chelants 失效
    氨基 - 聚乙酸的酰肼作为螯合剂

    公开(公告)号:US4726907A

    公开(公告)日:1988-02-23

    申请号:US810131

    申请日:1985-12-17

    IPC分类号: C02F5/12 C07C243/34 C23G1/14

    CPC分类号: C02F5/12 C07C243/34

    摘要: Amino-polyacetic acids such as ethylenediaminetetraacetic acid, diethylene triaminepentaacetic acid and nitrilotriacetic acid are reacted with alkanols and then with hydrazine to form the hydrazides which may be converted to carboxyhydrazides, i.e. carbazic acids. The products perform well as chelants and sequestering agents.

    摘要翻译: 将氨基 - 多乙酸如乙二胺四乙酸,二亚乙基三胺五乙酸和次氮基三乙酸与链烷醇反应,然后与肼反应形成可转化为羧酰肼(即卡巴酸)的酰肼。 产品表现良好,作为螯合剂和螯合剂。

    Scale-inhibiting process
    104.
    发明授权
    Scale-inhibiting process 失效
    抑垢过程

    公开(公告)号:US4704208A

    公开(公告)日:1987-11-03

    申请号:US803568

    申请日:1985-12-02

    申请人: Philippe A. Bouet

    发明人: Philippe A. Bouet

    CPC分类号: C02F5/12

    摘要: The scale-inhibiting agent used is a combination with a synergistic effect of at least 50% by weight of salified polymers of ethylenic acids, chosen from polymaleates, polyacrylates, polymethacrylates, maleateacrylate copolymers, acrylate-methacrylate copolymers, acrylate-methacrylate-itaconate terpolymers, and mixtures of these substances, and at most 50 wt. % aliphatic polyamines with the formulaR--NH -(CH.sub.2).sub.3 ].sub.n NH.sub.2wherein R represents an aliphatic radical having 12 to 18 carbon atoms and n can be an odd or even whole number between 1 and 6, the percentages being based on polymers and polyamines in the dry state. These percentages are preferably 5 to 15 wt. % aliphatic polyamines per 95 to 85 wt. % polymers.

    摘要翻译: 使用的阻垢剂是具有至少50重量%的选自聚马来酸酯,聚丙烯酸酯,聚甲基丙烯酸酯,马来酸酯丙烯酸酯共聚物,丙烯酸酯 - 甲基丙烯酸酯共聚物,丙烯酸酯 - 甲基丙烯酸酯 - 衣康酸酯三元共聚物的乙烯酸盐化聚合物的协同效应的组合, 和这些物质的混合物,和至多50wt。 具有式R-NH - (CH 2)3] n NH 2的脂族多胺,其中R表示具有12至18个碳原子的脂族基团,n可以是1至6之间的奇数或甚至整数,百分比基于聚合物和 多胺在干燥状态。 这些百分比优选为5〜15重量%。 %脂肪族多胺/ 95〜85重量% %聚合物。

    Treatment of aqueous systems
    107.
    发明授权
    Treatment of aqueous systems 失效
    水系统的处理

    公开(公告)号:US4566972A

    公开(公告)日:1986-01-28

    申请号:US691724

    申请日:1985-01-15

    CPC分类号: C02F5/12

    摘要: A method of inhibiting and preventing scale in an aqueous system is described which comprises incorporating in the water at least one amino carboxylate having the formula:RN[--(CH.sub.2).sub.x --Z].sub.2in which x is 1 or 2, R represents --(CH.sub.2).sub.x --Z or --CH.sub.2 CH.sub.2 N[--(CH.sub.2).sub.x --Z].sub.2 and Z represents a --COOH group, or a salt thereof, and at least one water-soluble copolymer possessing recurring units of the formula: ##STR1## wherein R.sub.1 represents hydrogen, lower alkyl or --CH.sub.2 COOH, R.sub.2 represents hydrogen or lower alkyl, X represents --COOH and Z represents hydrogen or --COOH, or X and Z together represent --CO--O--CO--, and Y represents --SO.sub.3 H, --C.sub.6 H.sub.5 SO.sub.3 H (para) or --CONHQ(R.sub.3)(R.sub.4) SO.sub.3 H in which Q represents --CH.sub.2 -- or --CH.sub.2 --CH.sub.2 -- and R.sub.3 and R.sub.4 independently represent hydrogen, phenyl, substituted phenyl, C 1-12 linear or branched alkyl or C 3-12 cycloalkyl, or a salt thereof.

    摘要翻译: 描述了一种抑制和防止水性体系中的结垢的方法,其包括在水中加入至少一种具有下式的RN [ - (CH 2)x Z] 2的氨基羧酸酯,其中x为1或2,R表示 - (CH 2 )xZ或-CH 2 CH 2 N [ - (CH 2)x Z] 2,Z表示-COOH基团或其盐,以及至少一种具有下式的重复单元的水溶性共聚物:其中R 1表示氢,低级 烷基或-CH 2 COOH,R 2表示氢或低级烷基,X表示-COOH,Z表示氢或-COOH,或X和Z表示-CO-O-CO-,Y表示-SO 3 H,-C 6 H 5 SO 3 H(对) 或-CONHQ(R3)(R4)SO3H,其中Q表示-CH2-或-CH2-CH2-,R3和R4独立地表示氢,苯基,取代的苯基,C 1-12直链或支链烷基或C 3-12环烷基 ,或其盐。