Patent ID: 6432137
Filing Date: 2002-08-13
Classification: A61L,C08G,C08L,G02B

Abstract:
An intraocular lens having a refractive index of at least about 1.50, made from an optically-clear silicone material having a content of phenyl groups of at least about 35 mole %, which is formed by the vulcanization of the mixture which comprises:(CH2&boxH;CH)3SiO{[(CH3)2SiO]m[(C6H5)2SiO]n[CH3(CH2&boxH;CH)SiO]k}xSi(CH&boxH;CH2)3â€ƒâ€ƒ(I) wherein m+n+k=1, m is from about 0.5 to about 0.7, n is from about 0.3 to about 0.5, k is from about 0.01 to about 0.02, and x is from about 350 to about 450; (CH3)3SiO{[(CH3)2SiO]a[(C6H5)2SiO]b[CH3(H)SiO]c}ySi(CH3)3â€ƒâ€ƒ(II) wherein a+b+c=1, a is from about 0.4 to about 0.5, b is from about 0.2 to about 0.4, c is from about 0.02 to about 0.04, and y is from about 5 to about 10; and (CH3)3SiO{[CH3(C6H5)SiO]f[CH3(CH2&boxH;CH)SiO]g[C6H5SiO1.5]h}zSi(CH3)3â€ƒâ€ƒ(III) wherein f+g+h=1, f is from about 0.3 to about 0.4, g is from about 0.2 to about 0.4, h is from about 0.01 to about 0.04, and z is from about 7 to about 10; said vulcanization taking place in the presence of a polyaddition reaction catalyst.