Patent ID: 8747109

Claim:
A resin substantially free of surfactant comprising: (a) a first component comprising (i) a cross-linkable, vinyl-functional poly(dimethylsiloxane) having a vinyl content between 0.02 and 0.08 mmol/g and an amount of polydisperse silica of particle size 5 to 50 nm sufficient to impart a viscosity between 250,000 cps and 1.5×10 6 cps to said first component, said cross-linkable, vinyl-functional poly(dimethylsiloxane)s being substantially free of monomers containing quaternary silicon-oxygen bonded repeat units including QM resins; and (ii) a platinum catalyst; and (b) a second component comprising (i) a cross-linkable, vinyl-functional poly(dimethylsiloxane) having a vinyl content between 0.02 and 0.08 mmol/g and an amount of polydisperse silica of particle size 5 to 50 nm sufficient to impart a viscosity between 250,000 cps and 1.5×10 6 cps to said second component, said cross-linkable, vinyl-functional poly(dimethylsiloxane)s being substantially free of monomers containing quaternary silicon-oxygen bonded repeat units including QM resins; and (ii) a linear, branched or cyclic hydrofunctional poly(siloxane) having a Si—H content from 1.4 to 5.0 mmol/g and viscosity of 40-300 cps; wherein the platinum catalyst is the only catalyst in the resin; and wherein after the resin is cured, the resulting product is flexible and contours to the mouth and teeth of the patient for repeated withdrawal and reinsertion.