| 摘要 |
PURPOSE:To develop a spermatocidal property and to enhance contraceptive effect without losing a use feeling, by mixing a bactericidal ionic metal such as copper or silver with an elastic material such as rubber being a condom forming material and forming the resulting mixture into a condom. CONSTITUTION:A metal discharging a bactericidal ion such as copper, silver or mercury, an alloy containing the bactericidal ionic metal or, according to circumstances, both metals are added to and mixed with an elastic material being a base material. The resulting mixture develops the sterilizing action by said metal. As the bactericidal ionic metal to be added and mixed with the rubber material molded into a condom, copper metal such as copper, a copper compound or a copper alloy is optimum from the aspect of capacity and cost. There are various materials as the rubber material being the base material to which the bactericidal ionic metal must be added to be kneaded therewith and silicone rubber being said to be not necessarily suitable for forming a contraceptive appliance from mechanical strength can be also used. |
