Hydrogen peroxide destroying compositions and methods of making

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

1990-12-20

1992-09-08

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Using disinfecting or sterilizing substance

422 30, 252106, 514840, 424 7804, 424 944, 424616, 424468, 427 3, A61L 200, A61K 3340, A01N 2500, A01N 3750

Patent

active

051456443

ABSTRACT:
Compostions, and method useful for making such compositions and for using such compositions, which are useful to destroy hydrogen peroxide in a liquid aqueous medium, such as that used to disinfect contact lenses, are disclosed. The composition comprises at least one item containing a hydrogen peroxide destroying component, e.g., catalase, effective when released in a liquid aqueous medium to destroy or cause the destruction of hydrogen peroxide present in the liquid aqueous medium, and a barrier coating located on the at least one item and 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 comprises a water soluble coating component, e.g., hydroxypropylmethyl cellulose, and is formed by a method which comprises applying a mixture comprising water, a ketone and the water soluble coating component to produce at least one precoated item; and removing water and ketone from the precoated item or items. In a preferred embodiment, the composition includes a cleaning enzyme to remove debris from the contact lens, in particular at the same time the lens is being disinfected.

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Chemical Selects Abstract Controlled Release Technology Issue 2, 1987.
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