申请人:Ciba-Geigy Corporation
公开号:US04208344A1
公开(公告)日:1980-06-17
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.
一种通式为##STR1##的化合物或化合物混合物,其中m和n可以为0或1,但两者不能都为1,R.sup.1、R.sup.2、R.sup.3、R.sup.4、R.sup.5和R.sup.6独立地为H或CH.sub.3,X.sup.1、X.sup.2、Z.sup.1和Z.sup.2独立地为氢或直链或支链C.sub.1-C.sub.4烷基;以及其水溶性无机或有机盐,但至少其中的一个R.sup.1、R.sup.2、R.sup.3、R.sup.4、R.sup.5必须为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,当添加到水系中时,对待处理的系统产生以下一个或多个有益效果:(a) 抑制了与系统接触的铁质金属的腐蚀;(b) 抑制了钙、镁、钡和锶的沉积盐在处理后的水系中形成的沉淀;和(c) 分散了处理后的水系中存在的无机物质。