Polysaccharide delivery particle
AssigneeSpray-Tek, Inc.
InventorsJiten Odhavji DIHORA, Caroline Rachel MULTARI
Life of this patent
Estimating the term…
Abstract
Disclosed are: (a) controlled release matrix particles containing 10-70 wt. % of a hydrophobic active ingredient, 21-72 wt. % of a polysaccharide, 3.80-12 wt. % of a crosslinking agent, 1.00-6 wt. % of a catalyst and 0.10-5 wt. % of a silica flow aid; (b) controlled release core/shell particles containing 10-70 wt. % of a hydrophobic active ingredient, 1.0-3.2 wt. % of an epoxidized oil, 21-64 wt. % of a polysaccharide, 7.6-23% of an amine-functionality containing material, and 0.10-5 wt. % of a silica flow aid; and (c) hybrid particles wherein the core/shell particles are contained in a matrix. Also disclosed are methods for making the particles and compositions containing the particles.
Claims25
Controlled release particles comprising 10-70 wt. % of a hydrophobic active ingredient, 21-72 wt. % of a polysaccharide, 3.80-12 wt. % of a crosslinking agent, 1.00-6 wt. % of a catalyst, 0.10-5 wt. % of a silica flow aid, and optionally 0.10-5 wt. % of a desiccant, wherein the controlled release particles are anhydrous and the hydrophobic active ingredient is encapsulated in a crosslinked polysaccharide matrix effective to retain the hydrophobic active ingredient upon exposure to water and effective to release the hydrophobic active ingredient in response to at least one of friction and enzymes.
Controlled release particles comprising 10-70 wt. % of a hydrophobic active ingredient, 1.0-3.2 wt. % of an epoxidized oil, 21-64 wt. % of a polysaccharide, 7.6-23% of an amine-functionality containing material, and 0.10-5 wt. % of a silica flow aid, wherein the controlled release particles are anhydrous and the hydrophobic active ingredient is in a core encapsulated by a shell effective to retain the hydrophobic active ingredient upon exposure to water and effective to release the hydrophobic active ingredient in response to friction.
Dependencies are inferred from the claim text.