申请人:Ciba-Geigy Corporation
公开号:US04501667A1
公开(公告)日:1985-02-26
Process for conditioning metal surfaces to inhibit their corrosion and/or to inhibit scale deposition thereon by treating said surfaces: A. prior to contact with a corrosive or scaling environment, with (i) compound having the formula I: ##STR1## or a water-soluble salt (or partial ester or -salt) thereof, wherein R.sub.1 and R.sub.2 are the same or different and each is hydrogen, a C.sub.1 -C.sub.12 straight- or branched chain alkyl group (optionally substituted by one or more hydroxy- and/or carboxyl groups and/or optionally interrupted by one or more oxygen atoms), a C.sub.3 -C.sub.12 straight- or branched chain alkenyl group, a C.sub.7 -C.sub.15 aralkyl group or --CH.sub.2 PO.sub.3 H.sub.2, or R.sub.1 and R.sub.2, together with the nitrogen atom to which they are each bonded, may form an optionally-substituted heterocyclic ring; R.sub.3 is hydrogen, a C.sub.1 -C.sub.12 straight- or branched chain alkyl group or an optionally substituted C.sub.6 -C.sub.10 aryl group; and R.sub.4 is hydrogen or C.sub.1 -C.sub.4 alkyl; and (ii) optionally a metal ion component (b) as hereinafter defined; and/or B. during contact with an aqueous system capable of corroding a metal surface or of depositing scale thereon, with (a) a compound of formula I or a water-soluble salt (or partial salt) thereof; and optionally (b) a metal ion which enhances, synergistically, the metal conditioning effected, individually, by the compound of formula I and the metal ion.
对金属表面进行处理以抑制其腐蚀和/或抑制其上的垢积聚的过程,包括以下步骤:A. 在与易腐蚀或易产生垢积聚的环境接触之前,用以下物质处理表面:(i) 具有I式的化合物:##STR1##或其水溶性盐(或部分酯或-盐),其中R.sub.1和R.sub.2相同或不同,每个都是氢,C.sub.1-C.sub.12直链或支链烷基(可选地被一个或多个羟基和/或羧基取代和/或可选地被一个或多个氧原子中断),C.sub.3-C.sub.12直链或支链烯基基团,C.sub.7-C.sub.15芳基烷基团或--CH.sub.2 PO.sub.3 H.sub.2,或R.sub.1和R.sub.2与它们各自键合的氮原子一起,可以形成一个可选的取代杂环环;R.sub.3是氢,C.sub.1-C.sub.12直链或支链烷基或可选的取代C.sub.6-C.sub.10芳基基团;R.sub.4是氢或C.sub.1-C.sub.4烷基;和(ii) 可选的金属离子组分(b),如下所定义;和/或B. 在与能够腐蚀金属表面或在其上沉积垢的水系接触期间,用I式化合物或其水溶性盐(或部分盐)(a)处理;可选地(b)使用金属离子,其在化合物I和金属离子各自单独作用的金属调理效果上协同增强。