Abstract: Compositions and methods for inhibiting scale are provided. Pursuant to the present invention, a composition for inhibiting scale is provided that includes a carbohydrate polymer having both nitrogen-containing groups and carboxyl groups. The nitrogen-containing groups include amino groups, amido groups and mixtures thereof. The present invention has been found useful for inhibiting scale in industrial waters, such as, pulp bleach plant process waters which contain calcium oxalate and barium sulfate scale.
Type:
Grant
Filed:
January 31, 2001
Date of Patent:
August 27, 2002
Assignee:
Ondeo Nalco Company
Inventors:
Sergey M. Shevchenko, Prasad Y. Duggirala
© 2024 Justia
