USE OF RE-DISPERSIBLE POLYMERIC POWDER OR POLYMERIC GRANULE FOR COATING AND PHARMACEUTICAL OR AGROCHEMICAL DOSAGE FORM

摘要

PROBLEM TO BE SOLVED: To obtain polymeric powder or polymeric granules comprising a water-insoluble polymer and a water-soluble polymer, completely re-dispersible, suitable for uniform coating of pharmaceutical or agrochemical dosage form and enabling the easily controllable release of active ingredient(s). SOLUTION: The re-dispersible polymeric powder or granules comprises (a) 10-95 wt.% of polyvinyl acetate, (b) 5-90 wt.% of an N-vinylpyrrolidone-contg. polymer, (c) 0-20 wt.% of another water-soluble or water-swellable substance and d) 0-20 wt.% of water-insoluble pulverizing agent, and in some cases, (e) other additive(s), so as to coat a pharmaceutical or agrochemical dosage form. The polymeric powder or granules ensures the controlled release of the active substance, epoxiconazole into soil for at least 6 months through a polyvinyl acetate/polyvinyl pyrrolidone coat.