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US 11,046,588 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 amino acid 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 and the amino acid additive are present in a molar ratio ranging from 15:1 to 5:1. Methods of using such compositions are also disclosed.
Claims20
An aqueous caustic composition comprising:
- a caustic component present in a concentration ranging from 5 wt % to 40 wt % of the aqueous caustic composition;
- an amino acid additive present in a concentration ranging from 2 wt % to 25 wt % of the aqueous caustic composition, wherein the amino acid additive is adapted to provide an extended buffering effect to the aqueous caustic composition when such is exposed to an acid;
- and
- water;
- wherein the amino acid additive is selected from the group consisting of:
- alanine;
- arginine;
- asparagine;
- aspartic acid;
- cysteine;
- glutamic acid;
- glutamine;
- histidine;
- isoleucine;
- leucine;
- lysine;
- methionine;
- phenylalanine;
- proline;
- serine;
- threonine;
- tryptophan;
- tyrosine;
- valine;
- and salts thereof, and
- wherein the amino acid additive buffers a pH of the aqueous caustic composition between 8.25 and 10.
23 more elements
An aqueous caustic composition comprising:
- a caustic component;
- an amino acid additive adapted to provide an extended buffering effect to the aqueous caustic composition when such is exposed to an acid, wherein the amino acid additive buffers a pH of the aqueous caustic composition between 8.25 and 10;
- and
- water;
- wherein the amino acid additive is selected from the group consisting of:
- alanine;
- arginine;
- asparagine;
- aspartic acid;
- cysteine;
- glutamic acid;
- glutamine;
- histidine;
- isoleucine;
- leucine;
- lysine;
- methionine;
- phenylalanine;
- proline;
- serine;
- threonine;
- tryptophan;
- tyrosine;
- valine;
- and salts thereof, and
- wherein the caustic component is present in a concentration of up to 40 wt % of the aqueous caustic composition and the caustic component and the amino acid additive are present in a molar ratio ranging from 15:1 to 5:1.
23 more elements
Dependencies are inferred from the claim text.