EP 0029529 B1 19830525 - REACTION PRODUCTS OF SULFONE OR CARBOXAMIDO CARBOXYLIC ACIDS WITH ALKANOL AMINES, AND THEIR USE AS CORROSION INHIBITORS WITH LOW FOAM FORMATION
Title (en)
REACTION PRODUCTS OF SULFONE OR CARBOXAMIDO CARBOXYLIC ACIDS WITH ALKANOL AMINES, AND THEIR USE AS CORROSION INHIBITORS WITH LOW FOAM FORMATION
Publication
Application
Priority
DE 2947418 A 19791124
Abstract (en)
[origin: US4344862A] Products which have been obtained by reacting an acid of the formula I <IMAGE> I where R1 and R2 are hydrogen, fluorine, chlorine, bromine or alkyl or alkoxy of 1 to 4 carbon atoms, but the sum of the carbon atoms of R1 and R2 is not greater than 7 and preferably not greater than 3, A is a benzene, naphthalene or anthracene radical or a biphenyl structure, such as a diphenyl, diphenylmethane, diphenyl ether, diphenyl sulfide, diphenyl sulfoxide or diphenyl sulfone radical, R3 is hydrogen, alkyl of not more than 4 carbon atoms, beta -cyanoethyl or hydroxyalkyl of 2 to 4 carbon atoms, R4 is hydrogen, fluorine, chlorine, bromine, alkyl or alkoxy of 1 to 4 carbon atoms, hydroxyl or carboxyl and X is -SO2- or -CO-, with an amine of the formula II <IMAGE> II where R5 and R6 are hydrogen, C1-C4-alkyl, C2-C4-hydroxyalkyl and/or <IMAGE> R7 and R8 being hydrogen, C1-C4-alkyl or C2-C4-hydroxyalkyl and n being an integer from 2 to 4, in the ratio, expressed in terms of equivalents, of from 1:1 to 1:4, and corrosion inhibitors which contain these products, with or without the admixture of an alkanolamine/boric acid reaction product.
IPC 1-7
C23F 11/16; C23F 11/14; C23F 11/18; C07C 143/78; C07C 103/84
IPC 8 full level
C23F 11/14 (2006.01); C23F 11/16 (2006.01); C23F 11/18 (2006.01)
CPC (source: EP US)
C23F 11/145 (2013.01 - EP US); C23F 11/164 (2013.01 - EP US); Y10S 507/939 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT SE
DOCDB simple family (publication)
EP 0029529 A1 19810603; EP 0029529 B1 19830525; DE 2947418 A1 19810604; DE 3063538 D1 19830707; US 4344862 A 19820817
DOCDB simple family (application)
EP 80106805 A 19801105; DE 2947418 A 19791124; DE 3063538 T 19801105; US 19905980 A 19801020