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.
Claims38
A hydroxypolyamide comprising at least one esterified polyacid and at least one polyamine,
- wherein the at least one esterified 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;
- wherein the at least one esterified polyacid is polymerized with the at least one polyamine in a single polymerization process to form the hydroxypolyamide;
- wherein the single polymerization process consists of polymerization of the at least one esterified polyacid and the at least one polyamine in a solvent;
- and
- wherein the concentration (wt/vol %) of the hydroxypolyamide required to form a gel in solution is 0.8% to 1.5%.
Dependencies are inferred from the claim text.