| 摘要 |
PURPOSE:To obtain the title composition by using a polymer soluble in both water and an alcohol, another polymer which is insoluble in water, but soluble in an alcohol and a softener, thus the composition has a good balance between resistance to moisture, water and solubility in water, and is used as a sticking plaster for oral mucous membranes without peeling. CONSTITUTION:The objective composition contains (A) a polymer soluble in both water and alcohol, preferably polyvinyl pyrrolidone and/or vinyl pyrrolidone-vinyl acetate copolymer, (B) another polymer insoluble in water, but soluble in alcohol, preferably ethyl cellulose and (C) a softener, preferably glycerol, diglycerol, sorbitol or sorbitol derivatives. The weight ratio of A:B is preferably 90:10-40:60. |
