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US 12,065,606 B2Granted
Anti-freezing dispersant and manufacturing process thereof
AssigneeEcolab USA Inc.
InventorsShiguang Li, Meng Kong, Qing Qing Yuan
Life of this patent
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Abstract
The present disclosure provides methods of treating industrial processes with compositions, methods of manufacturing the compositions, and various anti-freezing compositions suitable for use in the industrial processes. The anti-freezing dispersant compositions may include, for example, sulfonated dispersants and winterization solvents. The anti-freezing dispersant compositions may prevent fouling in the industrial processes.
Claims12
A composition, comprising:
- a sulfonated dispersant;
- and
- a solvent,
- wherein the composition has a freezing point less than about 0° C., further wherein the composition comprises about 5 wt. % to about 20 wt. % of the sulfonated dispersant and the solvent comprises about 40 wt. % to about 60 wt. % of ethylene glycol and about 20 wt. % to about 55 wt. % water or about 25 wt. % to about 45 wt. % of the sulfonated dispersant and the solvent comprises about 10 wt. % to about 30 wt. % of ethylene glycol and about 25 wt. % to about 65 wt. % water.
1 more element
A method of preparing a composition, comprising:
- reacting a naphthalene sulfonate with formaldehyde to form a sulfonated dispersant;
- purifying the sulfonated dispersant by adding a solvent to form a solution;
- separating a sediment from the solution;
- drying the solution to form a powder;
- and
- dissolving the powder in a second solvent.
3 more elements
A method of reducing fouling in an industrial process comprising:
- adding a composition comprising a sulfonated dispersant and a solvent to an aqueous medium in the industrial process, wherein the composition comprises about 5 wt. % to about 20 wt. % of the sulfonated dispersant and the solvent comprises about 40 wt. % to about 60 wt. % of ethylene glycol and about 20 wt. % to about 55 wt. % water or about 25 wt. % to about 45 wt. % of the sulfonated dispersant and the solvent comprises about 10 wt. % to about 30 wt. % of ethylene glycol and about 25 wt. % to about 65 wt. % water.
Dependencies are inferred from the claim text.