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US 11,267,718 B2Granted
Synthetic caustic composition
AssigneeFluid Energy Group Ltd.
InventorsClay Purdy, Markus Weissenberger
Life of this patent
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Abstract
An aqueous caustic composition comprising: a caustic component; an alkanolamine additive adapted to provide an extended buffering effect to the caustic composition when such is exposed to acid; and water. Uses and methods of using such compositions are also disclosed.
Claims18
An aqueous caustic composition comprising:
- a caustic component present in an amount ranging from 5 wt % to 40 wt %;
- an alkanolamine additive present in an amount ranging from 4 wt % to 15 wt %;
- and
- water,
- wherein the alkanolamine additive buffers a pH of the aqueous caustic composition between 8.25 and 10,
- wherein the alkanolamine additive is selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine, aminomethyl propanol, propanolamine, dimethylethanolamine, N-methylethanolamine, and combinations thereof, and
- wherein the caustic component and the alkanolamine additive are present in a molar ratio ranging from 15:1 to 5:1.
4 more elements
An aqueous caustic composition consisting essentially of:
- a caustic component;
- an alkanolamine additive;
- and
- water;
- wherein the caustic component is present in a concentration of up to 40 wt % of the composition,
- wherein the caustic component and the alkanolamine additive are present in a molar ratio ranging from 15:1 to 5:1, and
- wherein the alkanolamine additive buffers a pH of the aqueous caustic composition between 8.25 and 10.
4 more elements
Dependencies are inferred from the claim text.