Oral bandage and oral preparations
AssigneesNitto Electric Industrial Co., Ltd., Sunstar Inc.
InventorsYuichi Inoue, Tetuo Horiuchi, Kenji Hsaegawa, Koichi Nakashima, Takashi Tsuyoshi
Life of this patent
Estimating the term…
Abstract
An oral bandage comprising a soft adhesive film comprising a mixture of a polycarboxylic acid and/or a polycarboxylic acid anhydride and a vinyl acetate polymer in a compatible state, and an oral preparation comprising such an oral bandage having incorporated therein a topical drug are disclosed. The oral bandage or preparation exhibits strong adhesion of long duration when applied to the oral mucosa or teeth.
Claims27
An oral bandage comprising a soft adhesive film having a thickness of at least 5 .mu.m consisting essentially of a polycarboxylic acid and/or a polycarboxylic acid anhydride and a vinyl acetate polymer in a compatible state, wherein the polycarboxylic acid and/or the polycarboxylic acid anhydride and the vinyl acetate polymer are uniformly dissolved in each other without forming individual regions due to phase separation.
An oral preparation comprising a soft adhesive film having a thickness of at least 5 .mu.m consisting essentially of a mixture of a polycarboxylic acid and/or a polycarboxylic acid anhydride and a vinyl acetate polymer in a compatible state and topical drug incorporated therein, wherein the polycarboxylic acid and/or the polycarboxylic acid anhydride and the vinyl acetate polymer are uniformly dissolved in each other without forming individual regions due to phase separation.
Dependencies are inferred from the claim text.