Contact lens composition having increased oxygen permeability

Details Contact lens composition having increased oxygen permeability Contact lens composition having increased oxygen permeability

G - Physics

02

B

88/40, 400/5102,

G02B 1/04 (2006.01) C08F 230/08 (2006.01) C08F 283/12 (2006.01)

Patent

CA 1123146

Abstract of the Disclosure Acrylic siloxanes having the formula: Image where R1 is selected from the class of hydrogen or methyl groups, "a" is an integer from one to five, "b" is an integer from zero to seven, "c" is an integer from zero to two, "d" is an integer from zero to one, A is selected from the class of methyl or phenyl groups, R2 is selected from the class of methyl or pheyl groups, R3 and R4 represent either no group (cyclic ring from "c" to "d") or methyl or phenyl groups, act synergistically with vinyl pyrrolidone and hydroxy propyl methacrylate to provide optically clear moderate later containing contact lenses of substantially increased oxygen permeability.

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