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US 9,309,137 B2Granted
Tagged scale inhibitor compositions and methods of inhibiting scale
AssigneeKemira Chemicals, Inc.
InventorsLucas Moore, Laura Clapp
Life of this patent
Estimating the term…
Abstract
Scale inhibitor compositions and methods of inhibiting scale formation generally include a tagged scale inhibiting (co)polymer including at least one scale inhibiting moiety and an imidazole moiety. The imidazole moiety fluoresces at a wavelength of about 424 nm and can be used to detect the amount of scale inhibitor present.
Claims8
A water treatment solution for inhibiting scale formation, comprising:
- a scale inhibiting (co)polymer including an imidazole moiety, comprising at least one scale inhibiting polymerized monomer selected from the group consisting of acrylic acid;
- vinyl sulfonic acid or vinyl sulfonate salts;
- vinyl phosphoric acid or vinyl phosphonate salts;
- vinylidene diphosphonic acid or salts thereof;
- methacrylic acid;
- vinyl acetate;
- vinyl alcohol;
- vinyl chloride;
- unsaturated mono- or di-carboxylic acids or anhydrides;
- vinyl chloride;
- styrene-p-sulfonic acid, or styrene sulfonates salts;
- acrylamido-2-methylpropanesulfonic acid (AMPS);
- hydroxyphosphonoacetic acid (HPA);
- hypophosphorus acids acrylamides, propargyl alcohol having formula HC≡C—CH2—OH;
- butyr-1,4-diol, and mixtures thereof;
- and a 1-vinyl imidazole polymerized monomer of the formula:
- wherein R, R1 and R2 are the same or different, and each R, R1, and R2 is selected from the group consisting of H, an alkyl, an aromatic, phosphate, nitrate, and sulfate;
- and
- brine.
16 more elements
A water treatment solution for inhibiting scale formation, comprising:
- a scale inhibiting (co)polymer including an imidazole moiety, comprising at least one scale inhibiting polymerized monomer selected from the group consisting of vinylidene diphosphonic acid or salts thereof;
- styrene-p-sulfonic acid, or styrene sulfonates salts;
- acrylamido-2-methylpropanesulfonic acid (AMPS);
- hydroxyphosphonoacetic acid (HPA);
- hypophosphorus acids acrylamides, propargyl alcohol having formula HC≡C—CH2—OH;
- butyr-1,4-diol, and mixtures thereof;
- and a 1-vinyl imidazole polymerized monomer of the formula:
- wherein R, R1 and R2 are the same or different, and each R, R1, and R2 is selected from the group consisting of H, an alkyl, an aromatic, phosphate, nitrate, and sulfate;
- and
- a solvent.
7 more elements
A water treatment solution for inhibiting scale formation, comprising:
- a scale inhibiting (co)polymer including an imidazole moiety, comprising at least one scale inhibiting polymerized monomer selected from the group consisting of acrylic acid;
- vinyl sulfonic acid or vinyl sulfonate salts;
- vinyl phosphoric acid or vinyl phosphonate salts;
- vinylidene diphosphonic acid or salts thereof;
- methacrylic acid;
- vinyl acetate;
- vinyl alcohol;
- vinyl chloride;
- unsaturated mono- or di-carboxylic acids or anhydrides;
- vinyl chloride;
- styrene-p-sulfonic acid, or styrene sulfonates salts;
- acrylamido-2-methylpropanesulfonic acid (AMPS);
- hydroxyphosphonoacetic acid (HPA);
- hypophosphorus acids acrylamides, propargyl alcohol having formula HC≡C—CH2—OH;
- butyr-1,4-diol, and mixtures thereof;
- and a 1-vinyl imidazole polymerized monomer of the formula:
- wherein R, R1 and R2 are the same or different, and each R, R1, and R2 is selected from the group consisting of H, an alkyl, an aromatic, phosphate, nitrate, and sulfate;
- a solvent;
- and
- at least one additional tagged scale inhibiting material having an fluorescence emission signal different from the scale inhibiting (co)polymer.
17 more elements
Dependencies are inferred from the claim text.