| 摘要 |
1,159,236. Medical capsules. A. NATTERMANN & CIE G.m.b.H. 6 March, 1968 [7 March, 1967], No. 10996/68. Heading A5B [Also in Division B8] The thermal stability of soft gelatin capsules is enhanced by applying a protective coating of an anionic co-polymer of (a) acrylic and/or methacrylic acid and (b) methyl acrylate or methylacrylate having an acid number between 180 and 350 and a molecular weight of 110,000 to 160,000. The coating may contain a plasticiser e.g. dibutylphthalate or caster oil and may be applied by dipping the capsule in an ethanol or isopropanol solution of the coating composition and drying in hot air. |
