Use of redispersible polymer powders or polymer granules for coating pharmaceutical or agrochemical application forms

摘要

Use of redispersible polymer powders or granules to coat pharmaceutical or agrochemical dosage forms is new, where the powders or granules comprise: (i) 10-95 wt.% polyvinyl acetate; (ii) 5-90 wt.% of a N-vinylpyrrolidone polymer; (iii) 0-20 wt.% of another water-soluble or water-swellable material; (iv) 0-20 wt.% of a water-insoluble dusting agent; and optionally (e) further additives. Also claimed are solid pharmaceutical or agrochemical dosage forms with a core containing an active ingredient and a coating comprising (i)-(v) as above.