| 摘要 |
<p>Aerosol products such as perfumes, shaving creams hair dyes and bleaches polyamide impregnators, epoxy resin adhesives, foamed polyurethanes or polyurethanes are produced from hermetic micro-capsules dispersed in an aerosol adn each micro-capsule contians Al encapsulated active component and a volatile component in such quantity and of such volatility that the capsules are subjected to an internal pressure which is sufficient to rupture the capsules when they are exposed to atm pressure.</p> |
