Gelatin benzimidazole blends as inhibitors for carboxylic acids

Details Gelatin benzimidazole blends as inhibitors for carboxylic acids Gelatin benzimidazole blends as inhibitors for carboxylic acids

1978-07-18

1980-06-24

Pitlick, Harris A.

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

252142, 252146, 252149, 252388, 252390, 252391, 252394, 134 3, 134 41, C11D 708, C23G 106

Patent

active

042094186

ABSTRACT:
Compositions comprising a mixture of gelatin and a compound of the formula: ##STR1## wherein R, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each a group selected from the class consisting of --H, --Cl, --CHCl.sub.2, --CH.sub.2 Cl, --CCl.sub.3, --SH, --SCH.sub.3, --NH.sub.2, --NHC.tbd.N, --CH.sub.2 C.tbd.N, ##STR2## --CH.sub.2 OH, --NO.sub.2 and monovalent hydrocarbon radicals having from 1 to about 18 carbon atoms, provide effective corrosion inhibition for aqueous carboxylic acid solutions in the cleaning of metal industrial equipment.

REFERENCES:
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patent: 2392404 (1946-01-01), Peterson
patent: 2823184 (1958-02-01), Plump et al.
patent: 3072502 (1963-01-01), Alfano
patent: 3345296 (1967-10-01), Lutz
patent: 3492238 (1970-01-01), Wohlberg
patent: 3664870 (1972-05-01), Oberhofer et al.
patent: 3728267 (1973-04-01), Hirota et al.
patent: 3729423 (1973-04-01), Hirota
patent: 3876371 (1975-04-01), Costain et al.
Desai, "Mechanism of Gelatin Inhibitor Action on the Corrosion of Brass in Citric Acid Based on Potential and Polarization Measurements," Werkstoffe Korrosion 16(8), 681-685, (1965), CA 64:3162c.

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