Scale inhibitor for an aqueous system

Details Scale inhibitor for an aqueous system Scale inhibitor for an aqueous system

2005-01-25

2005-01-25

McKane, Elizabeth (Department: 1744)

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Maintaining environment nondestructive to metal

C422S015000, C252S180000, C252S389230, C210S699000

Reexamination Certificate

active

06846452

ABSTRACT:
This invention relates to a composition and a method for inhibiting the formation of scale, particularly complex scale, in an aqueous system where more than one type of scale is present. The scale typically present in the aqueous system includes silica, silicates, and carbonates. The scale inhibiting composition comprises (1) 2-phosphonobutane-1,2,4-tricarboxylic acid and salts thereof, and (2) a copolymer of (1) one or more allyloxybenzenesulfonate monomers, and (2) one or more water-soluble acrylic monomers, substituted acrylic monomers, or mixtures thereof.

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