Corrosion inhibiting metal auxiliaries

Corrosion-inhibiting metal auxiliaries with small tendency to foam and based on salts of alkylsulfamido-alkyl carboxylic acids are formed by adding alkalis or water-sol. tert. amines to the free acid so that a 0.5 aq. soln. of the salt has a pH at least 5.0, then 0.01-2.0% hydrazine or salt thereof...

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Bibliographic Details
Main Authors MARTIN REUTER,DR, WALTER DUERSCH,DR
Format Patent
LanguageEnglish
German
Published 23.07.1970
Subjects
CHEMISTRY
FUELS
LUBRICANTS
LUBRICATING COMPOSITIONS
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
TECHNICAL GASES CONTAINING CARBON MONOXIDE
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Summary:Corrosion-inhibiting metal auxiliaries with small tendency to foam and based on salts of alkylsulfamido-alkyl carboxylic acids are formed by adding alkalis or water-sol. tert. amines to the free acid so that a 0.5 aq. soln. of the salt has a pH at least 5.0, then 0.01-2.0% hydrazine or salt thereof and 0.1-2.5% acylating agents are added, and if necessary by further addn. of alkalis or amine a final pH of 6.0-10.0 measured in a 5% aq. soln. of the alkylsulfamidoalkyl carboxylic salt is established.
Bibliography:Application Number: DE19681817311