Treatment of aqueous systems
    1.
    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。