Abstract:
The invention relates to solid particulate film coating agents consisting of: a) 40 - 90 % by weight, preferably 40 - 70 % by weight polyvinyl alcohol-polyether graft copolymers (component A), b) up to 60 % by weight, preferably between 20 and 45 % by weight of a coloured or achromatic colouring agent (component B), c) between 0 and 30 % by weight additional conventional auxiliary agents (component C). According to the invention, the quantities of components A to C total 100 % by weight. Said coating agents are obtained by the extrusion of a plastic mass of components A) to C) and by a subsequent shaping process.
Abstract:
Solid particulate film-coating compositions consisting of a) 40-90% by weight, preferably 40 to 70% by weight, of a polyvinyl alcohol-polyether graft copolymer (component A), b) 10 to 60% by weight, preferably 20 to 45% by weight, of a chromatic or achromatic colorant (component B) c) 0 to 30% by weight of further conventional auxiliaries (component C) where the amount of components A to C adds up to 100% by weight, which are obtained by extrusion of a melt of components A) to C) and subsequent shaping.