Metal loss inhibitors and processes therewith

Details Metal loss inhibitors and processes therewith Metal loss inhibitors and processes therewith

C - Chemistry, Metallurgy

11

D

C11D 7/34 (2006.01) C11D 1/00 (2006.01) C11D 1/04 (2006.01) C11D 1/72 (2006.01) C11D 3/00 (2006.01) C11D 3/30 (2006.01) C11D 3/33 (2006.01) C11D 3/34 (2006.01) C11D 3/37 (2006.01) C11D 10/04 (2006.01) C11D 11/00 (2006.01) C23G 1/06 (2006.01)

Patent

CA 2283655

An inhibitor especially useful for aqueous solutions being used at high temperatures to remove scale from boiler tubes and the like contains (1) amines including a substituent group with an abietyl nucleus, (2) organic compounds or polymers that contain at least 2 -OH moieties per molecule and at least 0.4 -OH moieties per carbon atom, (3) organic molecules that contain a carbon-sulfur bond, and (4) surfactant.

L'invention concerne un inhibiteur particulièrement efficace dans des solutions aqueuses, qu'on met en oeuvre à des températures élevées pour éliminer le tartre des tubes de chaudières ou d'appareils similaires. Ledit inhibiteur est composé 1) d'amines contenant un substituant avec un noyau abiétyl; 2) de composés ou polymères organiques contenant au moins deux fractions hydroxy par molécule et au moins 0,4 fraction hydroxy par atome de carbone; 3) de molécules organiques présentant une liaison carbone-soufre; et 4) d'un tensioactif.

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