Chlorohydrin removal method
OwnerKenneth Cherry, Jill Cherryinventors
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Abstract
In the use of ethylene oxide as a sterilizing agent, toxic chemicals known as chlorohydrins may be formed in the sterilized materials. Chlorohydrins are difficult to remove using the normal pressure vacuum air purge cycles specified in the ethylene oxide sterilization process. Introduction of ammonia vapors in one or more of the pressure vacuum purge cycles provides a means to reduce chlorohydrin concentration in the sterilized materials.
Claims7
A method to reduce chlorohydrin concentration produced during ethylene oxide sterilization comprising an ammonia injection step to provide ammonia contact with the sterilized materials resulting in a reduction in the chlorohydrin concentration, in the sterilized materials.
The use of ammonia injection after ethylene oxide sterilization to reduce the amount of residual contamination in the sterilized material.
Dependencies are inferred from the claim text.