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US 10,590,276 B2Granted
Aqueous suspension of inorganic particulate material
AssigneeImerTech SAS
InventorsDesmond Charles Payton, Stuart Thomas
Life of this patent
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Abstract
An aqueous suspension comprising an inorganic particulate material and dimethylethanolamine, use of dimethylethanolamine to prevent pH decrease or reduce the rate of pH decrease of an aqueous suspension comprising an inorganic particulate material over time, use of dimethylethanolamine as an anti-microbial additive in an aqueous suspension comprising an inorganic particulate material, and a method of preparing an aqueous suspension comprising inorganic particulate material.
Claims5
A method comprising:
- forming an aqueous suspension comprising an amount of 2-(Dimethylamino)ethanol (DMEA) and one of an alkaline earth metal carbonate, wollastonite, talc, or clay present in the aqueous suspension in an amount ranging from about 66% to about 82%, wherein
- the pH of the aqueous suspension is maintained in a pH range from about 9.5 to about 10.5 for an amount of time ranging from 1 day to 6 weeks.
Dependencies are inferred from the claim text.