Hydrogen peroxide destroying compositions and methods of...

Details Hydrogen peroxide destroying compositions and methods of... Hydrogen peroxide destroying compositions and methods of...

C - Chemistry, Metallurgy

09

K

C09K 15/06 (2006.01) A61L 2/16 (2006.01) A61L 2/18 (2006.01) A61L 12/12 (2006.01) C11D 3/00 (2006.01) G02C 13/00 (2006.01)

Patent

CA 2075481

A composition and methods useful for making such compositions and for using such compositions to destroy hydrogen peroxide in a liquid aqueous medium, such as that used to desinfect contact lenses, are disclosed. The composition comprises a coated core containing at least one hydrogen peroxide destroying component effective when released into a liquid aqueous medium to destroy or cause the destruction of hydrogen peroxide present in the liquid aqueous medium, and a barrier coating acting to substantially prevent the release of the hydrogen peroxide destroying component for a period of time after the composition is initially contacted with a hydrogen peroxide-containing liquid aqueous medium. The barrier coating is substantially water soluble, preferably includes polyvinylpyrrolidone and is applied as a substantially dry, solid material.

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