Hydroxypolyamide gel forming agents
AssigneeThe University of Montana
InventorsDonald E. Kiely, Tyler N. Smith
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Abstract
Hydroxypolyamides, hydroxypolyamide products, and post-hydroxypolyamides are disclosed as gel forming agents. Hydroxypolyamides and post-hydroxypolyamides are prepared from known methods. Hydroxypolyamide products are produced from a modified polymerization procedure which utilizes strong base for deprotonation of ammonium salts from the esterification of stoichiometrically equivalent polyacid:polyamine salts. The hydroxypolyamide products are capable of gel formation at lower concentrations than hydroxypolyamides and post-hydroxypolyamides from the known methods of preparation, and are therefore superior gel forming agents.
Claims24
A hydroxypolyamide product comprising, a hydroxypolyamide component and a salt component, each component produced in the same polymerization process,
- wherein the hydroxypolyamide component is derived from at least one esterified polyacid and polyamine salt;
- wherein the at least one esterified polyacid and polyamine salt is derived from at least one polyacid:polyamine salt;
- wherein the at least one polyacid:polyamine salt is derived from at least one polyacid and at least one polyamine;
- wherein the at least one polyacid is derived from at least one organic polyacid having at least one pendant hydroxyl group;
- wherein the at least one polyamine is derived from at least one organic polyamine;
- and
- wherein the polymerization process includes treating the esterified polyacid and polyamine salt with a base stronger than a tertiary amine;
- wherein the minimum concentration (wgt/vol %) of the hydroxypolyamide product required to form a gel in solution is ≦0.75%.
A gel comprising a hydroxypolyamide product and a liquid component,
- wherein the hydroxypolyamide product comprises a hydroxypolyamide component and a salt component, each component produced in the same polymerization process;
- wherein the hydroxypolyamide component is derived from at least one esterified polyacid and polyamine salt;
- wherein the at least one esterified polyacid and polyamine salt is derived from at least one polyacid:polyamine salt;
- wherein the at least one polyacid:polyamine salt is derived from at least one polyacid and at least one polyamine;
- wherein the at least one polyacid is derived from at least one organic polyacid having at least one pendant hydroxyl group;
- wherein the at least one polyamine is derived from at least one organic polyamine;
- and
- wherein the polymerization process includes treating the esterified polyacid and polyamine salt with a base stronger than a tertiary amine;
- wherein the minimum concentration (wgt/vol %) of the hydroxypolyamide product required to form a gel in solution is ≦0.75%.
A gel forming agent comprising at least one hydroxypolyamide product comprising a hydroxypolyamide component and a salt component, each component produced in the same polymerization process,
- wherein the hydroxypolyamide component is derived from at least one esterified polyacid and polyamine salt;
- wherein the at least one esterified polyacid and polyamine salt is derived from at least one polyacid:polyamine salt;
- wherein the at least one polyacid:polyamine salt is derived from at least one polyacid and at least one polyamine;
- wherein the at least one polyacid is derived from at least one organic polyacid having at least one pendant hydroxyl group;
- wherein the at least one polyamine is derived from at least one organic polyamine;
- and
- wherein the polymerization process includes treating the esterified polyacid and polyamine salt with a base stronger than a tertiary amine;
- wherein the minimum concentration (wgt/vol %) of the hydroxypolyamide product required to form a gel in solution is ≦0.75%.
Dependencies are inferred from the claim text.