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Title:
COMPOSITION AND METHOD FOR INHIBITION OF METAL CORROSION
Document Type and Number:
WIPO Patent Application WO2000075399
Kind Code:
A3
Abstract:
Carbon dioxide induced corrosion of ferrous metals in aqueous systems is inhibited by treatment of the aqueous system with corrosion inhibiting amino thiol and aminodisulfide compounds. Particularly effective inhibitors are the natural amino acids cysteine and cystine and their decarboxylated analogues cysteamine and cystamine. Novel corrosion inhibiting compositions comprising a combination of amino thiol or amino disulfide compounds with acidic amino acid polymers are also disclosed.

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Inventors:
FAN JOSEPH C
FAN LAI-DUIEN GRACE
MAZO JACOB
Application Number:
PCT/US2000/013731
Publication Date:
October 02, 2003
Filing Date:
May 18, 2000
Export Citation:
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Assignee:
DONLAR CORP (US)
International Classes:
C02F1/50; C02F5/12; C09K8/54; C23F11/10; C23F11/16; (IPC1-7): C23F11/00
Foreign References:
US5116513A1992-05-26
US5152902A1992-10-06
US5284512A1994-02-08
US5443651A1995-08-22
US5531934A1996-07-02
US5776875A1998-07-07
Other References:
See also references of EP 1368509A4
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