US Patent 10188593 Polysaccharide delivery particle

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.