| 摘要 |
1338563 Coating compositions; gelatin YAMANOUCHI PHARMACEUTICAL CO Ltd 27 Nov 1970 [2 Dec 1969] 56526/70 Headings C3F and C3H [Also in Divisions B2 A5 and C4] Coating compositions for tablets to prevent them from degrading under storage conditions of high temperature and high humidity comprise a coating material consisting of sugar and/or a film-forming material and 0À1-30% by weight (based on the coating material) of particles of at least one plastics material selected from nylon, polytetrafluoroethylene, polyethylene, polypropylene, polymethylmethacrylate and organosilicon oxide polymers, the particles of plastics material having diameters of less than 50 microns. The coating composition may be a dispersion in water or organic solvent and may additionally contain a colouring agent, a taste improving agent, a flavouring agent, a lubricant, a filler, a shielding agent, a binder or a surface active agent. The particles may have been preliminarily dyed. In the examples, the coating compositions contain (1) 100 g. cellulose acetate phthalate, 10 g. nylon particles, 430 g. acetone, 430 g. isopropyl alcohol; (2) 50 g. hydroxypropyl methyl cellulose, 5 g. dyed nylon particles, 400 g. methylene chloride, 400 g. methanol, 100 g. 2-ethoxy ethanol; (3) 100 g. hydroxypropyl cellulose, 10 g. polytetrafluoroethylene particles, 400 g. methanol, 400 g. isopropyl alcohol; (8) 1000 g. gelatin, 50 g. glycerine, 100 g. nylon particles, 10 g. titanium dioxide, 2À5 g. of a food dye, 1000 g. water. |
