Patent ID: 7718748

Claim:
A two-component addition-cross linking silicone for producing antimicrobial earpieces comprising a) 0.1-70% by weight polyorganosiloxanes containing at least two end-blocked vinyl groups in the molecule; b) 0.1-15% by weight polyorganohydrogensiloxanes containing at least two SiH groups in the molecule; c) 0.01-2.0% by weight noble metal catalyst; and d) 2% by weight by of a non-toxic antimicrobial additive wherein the non-toxic antimicrobial additive is a combination of a bioactive glass filler having a composition of 45±5% by weight SiO 2 , 25±5% by weight Na 2 O, 25±5% by weight CaO, and 5±5% by weight P 2 O 5 , and having a particle size<100 nm, in an amount of 2% by weight of the addition cross linking silicone and further includes e) 0.3% by weight silver nanoparticles.