Reaction products of sulfonamido-carboxylic acids or carboxamido

Details Reaction products of sulfonamido-carboxylic acids or carboxamido Reaction products of sulfonamido-carboxylic acids or carboxamido

1980-10-20

1982-08-17

Gluck, Irwin

Compositions

Preservative agents

Anti-corrosion

106 1418, 252 855E, 252 77, 252 781, 252 87, 252180, 252181, 252389R, 260465D, 26050111, 26050112, 422 12, 422 13, 422 16, 422 17, C23F 1116, C23F 1114, C23F 1112

Patent

active

043448623

ABSTRACT:
Products which have been obtained by reacting an acid of the formula I ##STR1## where R.sup.1 and R.sup.2 are hydrogen, fluorine, chlorine, bromine or alkyl or alkoxy of 1 to 4 carbon atoms, but the sum of the carbon atoms of R.sup.1 and R.sup.2 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, R.sup.3 is hydrogen, alkyl of not more than 4 carbon atoms, .beta.-cyanoethyl or hydroxyalkyl of 2 to 4 carbon atoms, R.sup.4 is hydrogen, fluorine, chlorine, bromine, alkyl or alkoxy of 1 to 4 carbon atoms, hydroxyl or carboxyl and X is --SO.sub.2 -- or --CO--, with an amine of the formula II ##STR2## where R.sup.5 and R.sup.6 are hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -hydroxyalkyl and/or ##STR3## R.sup.7 and R.sup.8 being hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.2 -C.sub.4 -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.

REFERENCES:
patent: 2578725 (1951-12-01), Michel et al.
patent: 2908648 (1959-10-01), Spivack et al.
patent: 3556994 (1971-01-01), Diery
patent: 4060522 (1977-11-01), Kindscher et al.
Ziolkowsky, "Seifo, Ole, Fette, Wachse" 103, No. 6, (1977), pp. 167-168.

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