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US 10,947,123 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 additive adapted to provide an extended buffering effect to the caustic composition when such is exposed to an acid; and water. Methods of using such compositions are also disclosed.
Claims20
An aqueous caustic composition comprising:
- a caustic component;
- an additive;
- and
- water,
- wherein the additive buffers a pH of the aqueous caustic composition to between 8.25 and 10, and wherein the additive is selected from the group consisting of:
- taurine;
- gamma-aminobutyric acid;
- aminovaleric acid;
- aminocaproic acid;
- aminocapric acid;
- sulfopyruvic acid;
- sulfobutanoic acid;
- sulfopentanoic acid;
- sulfohexanoic acid;
- phosphonium zwitterions with either a sulfonic acid or carboxylic acid group;
- phosphoric acids and their esters with an amine group;
- and
- phosphonic and phosphinic acids and their esters with an amine group.
15 more elements
An aqueous caustic composition comprising:
- a caustic component;
- an additive adapted to provide an extended buffering effect to the caustic composition when such is exposed to an acid;
- and
- water;
- wherein the caustic component is present in a concentration of up to 40 wt % of the composition and the caustic component and the additive are present in a molar ratio ranging from 15:1 to 5:1,
- wherein the additive buffers a pH of the aqueous caustic composition to between 8.25 and 10, and wherein the additive is selected from the group consisting of:
- taurine;
- gamma-aminobutyric acid;
- aminovaleric acid;
- aminocaproic acid;
- aminocapric acid;
- sulfopyruvic acid;
- sulfobutanoic acid;
- sulfopentanoic acid;
- sulfohexanoic acid;
- phosphonium zwitterions with either a sulfonic acid or carboxylic acid group;
- phosphoric acid ester group with an amine group;
- and
- phosphonic and phosphinic acids and their esters with an amine group.
16 more elements
Dependencies are inferred from the claim text.