申请人:Ciba-Geigy Corporation
公开号:US04265769A1
公开(公告)日:1981-05-05
A compound or mixture of compounds of the general formula: ##STR1## in which m and n may be 0 or 1 but both cannot be 1, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are independently H or CH.sub.3, X.sup.1, X.sup.2, Z.sup.1 and Z.sup.2 are independently hydrogen or straight or branched chain C.sub.1 -C.sub.4 alkyl; and the water-soluble inorganic or organic salts thereof, with the proviso that at least one of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 must be CH.sub.3, and when m and n are both 0, R.sup.2 and R.sup.3 are each methyl and R.sup.4 and R.sup.5 have their previous significance, when added to an aqueous system imparts one or more of the following beneficial effects to be treated system: (a) the corrosion of ferrous metals in contact with the system is inhibited; (b) the precipitation of scale-forming salts of calcium, magnesium, barium and strontium from the treated aqueous system is inhibited; and, (c) inorganic materials present in the treated aqueous system are dispersed.
一种化合物或化合物混合物的一般公式:##STR1## 其中m和n可以是0或1,但不能同时为1,R.sup.1、R.sup.2、R.sup.3、R.sup.4、R.sup.5和R.sup.6独立地是H或CH.sub.3,X.sup.1、X.sup.2、Z.sup.1和Z.sup.2独立地是氢或直链或支链C.sub.1-C.sub.4烷基;以及其水溶性无机或有机盐,但至少其中一个R.sup.1、R.sup.2、R.sup.3、R.sup.4、R.sup.5必须是CH.sub.3,当m和n都为0时,R.sup.2和R.sup.3分别为甲基,R.sup.4和R.sup.5具有其先前的意义,当加入到水系中时,对待处理的系统产生以下一种或多种有益效果:(a)抑制与系统接触的铁质金属的腐蚀;(b)抑制钙、镁、钡和锶的沉积盐形成;(c)分散存在于处理的水系中的无机物质。