Phosphonate-containing polymers used as scale and corrosion...

Details Phosphonate-containing polymers used as scale and corrosion... Phosphonate-containing polymers used as scale and corrosion...

C - Chemistry, Metallurgy

02

F

C02F 5/04 (2006.01) C09K 15/32 (2006.01)

Patent

CA 2066081

ABSTRACT OF DISCLOSURE A method of inhibiting scale and corrosion of metal surfaces in contact with scale forming and/or corrosive industrial process waters. The process comprises treating these waters with an acrylic acid polymer which contains from 0-95 mole percent of acrylamide groups and from 1-30 mole percent of amido(Cl-C6 alkyl)phosphonate groups from the group consisting of: a. amidomethylphosphonate groups, b. alpha-hydroxy-beta-amidoethylphosphonate groups, c. alpha-hydroxy-beta-amidoisopropylphosphonate groups, and: d. amidopropylphosphonate groups. These polymers have a molecular weight range between 1,000- 100,000.

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