Compositions comprising silicone pressure sensitive adhesives for delivering oral care substances

Abstract

Disclosed are compositions for delivering one or more oral care substances to the oral cavity, comprising: (a) a silicone pressure sensitive adhesive selected from a silicone/resin copolymer with silicon-bonded hydroxyl radicals, a silicone/resin copolymer with endcapped silicon-bonded hydroxyl radicals and mixtures thereof; (b) a plasticizing material; (c) a water-soluble bioadhesive polymer; (d) a hydrophilic surfactant, and (e) at least one oral care substance. The silicone/resin copolymer is prepared by polycondensing a silanol endblocked polydialkylsiloxane and a hydroxyl endblocked silicate resin. The polycondensation product may be further reacted with a trialkylsilyl endcapping agent to reduce the number of hydroxyl radicals in the polymer. Further disclosed are methods of using these compositions, such as for teeth bleaching and whitening applications.

Dependencies are inferred from the claim text.