| 摘要 |
PURPOSE:The titled tape useful for remedying angina pectoris, and myocardial infarction, having improved holding stability of nitroglycerin and prolongably releasing properties, comprising a rubber type adhesive base, a polar group-containing tackifier resin, a softening agent, and nitroglycerin. CONSTITUTION:(A) 100pts.wt. Rubber type adhesive base is blended with (B) 20-200pts.wt. polar-group containing tackifier resin (e.g., glycerin ester of hydrogenated rosin, etc.) and (C) 0-100pts.wt. polar group-containing softening agent (e.g., lanolins) to give a blend, which is blended with (D) 1-20wt% nitroglycerin to prepare a pressure-sensitive adhesive. This adhesive is applied to an unpermeable base material (preferably polyolefin film), to give the desired tape or sheet. A tackifier resin having no polar group (e.g., petroleum type tackifier resin) and one or more softening agents having no polar group (e.g., polybutene, etc.) are preferably blended with the polar substances of components B and C. |
