Water-soluble addition polymers of cyclohexene anhydrides
AssigneeRohm and Haas Company
InventorsMarianne P. Creamer, Thomas F. McCallum, III, Graham Swift, Barry Weinstein
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Abstract
The present invention provides water-soluble poylmers containing, as polymerized units: (a) from about 3 to about 95 percent by weight of one or more cyclohexene anhydrides or the alkali metal or ammonium salts thereof. The present further provides aqueous polymerization processes for making the polymers. The water-soluble polymers are useful as water-treatment additives for boiler waters and cooling towers and as detergent additives acting as builders, anti-filming agents, dispersants, sequestering agents and encrustation inhibitors.
Claims15
A water-soluble polymer containing, as polymerized units:
- (a) from about 3 to about 95 percent by weight of one or more cyclohexene anhydrides or the alkali metal or ammonium salts thereof;
- (b) from about 5 to about 97 percent by weight of one or more monomers selected from the group consisting of
- (i) compounds having the formula ##STR6## where R.sub.1 and R.sub.2, are each independently selected from the group consisting of hydrogen, methyl, and ethyl;
- R.sub.3 is selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl, butyl, isobutyl and tert-butyl;
- and
- X is selected from the group consisting of hydrogen, methyl, ethyl, propyl, hydroxyethyl, hydroxypropyl, alkali metals, and ammonium, and
- ii) acrylamides, and substituted acrylamides;
- and optionally
- (c) from 0 to about 90 percent by weight of one or more monoethylenically unsaturated monomers wherein said monoethylenically unsaturated monomers are at least partially water-soluble and polymerizable with (a) and (b).
Dependencies are inferred from the claim text.