GB2407496A — Method for forming a polysiloxane film on a biological surface

USPTO Abstract

This invention relates to a method for forming a film on a biological surface. The method comprises mixing 5 to 70 wt. % of an alkylene trialkoxysilyl terminated polysiloxane; 0 to 5 wt. % of an alkoxysilane; 0.01 to 5 wt. % of a catalyst; 0 to 25 wt % of a filler; and 1 to 94.99 wt % of a volatile diluent to form a formulation. The formulation is then applied onto a biological surface where it cures in situ on the biological surface to form the film. The resultant film is useful in healthcare and cosmetic applications, as well as pesticidal or herbicidal applications. The preferred formulations include a polysiloxane produced from vinyl-terminated dimethylsiloxane and trimethoxysilylethyl tetramethyldisiloxane, methyltrimethoxysilane as the alkoxysilane, tetra-tert-butyl titanate as the catalyst and hexamethyldisiloxane as the diluent. The formulation may contain an active agent and may be applied to skin, hair, nails, teeth eyes, mucous membranes or to plants.