Title: Process for preventing corrosion and the formation of scale in water circulating system

Abstract: Preventing corrosion and scale formation in water re-circulating systems by adding to each cubic meter of the water being re-circulated from about 5 to 100 grams of a compound selected from the group consisting of those of the formula ##EQU1## and the water-soluble salts thereof R being hydrogen, alkyl, alkenyl or alkinyl having up to 4 carbon atoms; phenyl; cycloalkyl having 3 to 6 carbon atoms; benzyl; phenethyl or ##EQU2## wherein R' is hydrogen, alkyl having 1 to 4 carbon atoms or carboxyl, R" is hydrogen or methyl and R'" is carboxyl.

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Inventors: Bohnsack, Gerhard (Bergisch-Neukirchen, DT)
Geffers, Hans (Cologne, DT)
Kallfass, Herbert (Cologne, DT)
Radt, Walter (Leverkusen, DT)

Application Number: 362449
Filing Date: 1973-05-21
Publication_date: 1976-01-20
Assignee: Bayer Aktiengesellschaft (Leverkusen, DT)
Primary Class(es): 422/15 210/699, 252/180, 252/181, 252/389.23, 510/469, 562/24
Other Classes:
US Patent Ref:

3617576	Nov, 1971	Kerst	21/2.
3669616	Jun, 1972	Murray et al.	21/2.
3714066	Jan, 1973	King	21/2.
3723347	Mar, 1973	Mitchell	21/2.

Other Refs: 2,015,0681,282,078

Oct, 1971	DT.
Jul, 1972	UK.

Primary Examiner: Wolk, Morris O.
Assistant Examiner: Hollander, Barry I.
Attorney: Burgess, Dinklage & Sprung