申请人:CIBA-GEIGY AG
公开号:EP0252007A2
公开(公告)日:1988-01-07
New composition comprises a functional fluid in contact with ferrous metal and a corrosion inhibiting amount of at least one compound of formula (I)
or a derivative thereof in which R1, R2 and R3 are, independently, hydrogen, a C1 -C15 straight or branched chain alkyl residue, a C5 -C12 cycloalkyl residue, a C6 -C15 aryl residue or C7 -C12 alkaryl residue, and R4 and R5 are, independently, hydrogen, 2-hydroxyethyl or 2-hydroxypropyl with the provisos that a) R4 and R5 are not simultaneously hydrogen,
b) when R4 and R5 are each -CH2 -CH2 -OH, R1 and R2 are not simultaneously hydrogen and R3 is not a pentyl residue and
c) that polyalkylene phenol or polycarboxylic ester co-additives are absent:
as well as salts thereof. Some of the compounds of formula I are new.
新组合物由与黑色金属接触的功能流体和至少一种式 (I) 化合物的缓蚀剂组成
或其衍生物,其中 R1、R2 和 R3 独立地为氢、C1 -C15 直链或支链烷基残基、C5 -C12 环烷基残基、C6 -C15 芳基残基或 C7 -C12 烷芳基残基,R4 和 R5 独立地为氢、2-羟乙基或 2-羟丙基,但 a) R4 和 R5 不能同时为氢、
b) 当 R4 和 R5 分别为-CH2 -CH2 -OH 时,R1 和 R2 不是同时为氢,R3 不是戊基残基,以及
c) 不含聚亚烷基酚或聚羧酸酯共添加剂:
及其盐类。式 I 的某些化合物是新化合物。