Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Using disinfecting or sterilizing substance
Patent
1993-12-06
1994-09-13
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Using disinfecting or sterilizing substance
422 37, 424 45, A01N 2900, A61L 904
Patent
active
053466691
ABSTRACT:
Non-ozone depleting sterilant compositions made of ethylene oxide and 1,1,1,2,3,3,3-heptafluoropropane. These compositions provide good sterilization characteristics, and are compatible with contemporary environmental concerns. One preferred aspect of the invention is a sterilant mixture comprising from about 20 mole percent to about 35 mole percent ethylene oxide and from about 65 mole percent to about 80 mole percent HFC-227 ea. Compositions comprising from about 25 mole percent to about 30 mole percent ethylene oxide and from about 70 mole percent to about 75 mole percent HFC-227 ea are preferred, with a composition comprising about 27 mole percent ethylene oxide and about 73 mole percent HFC-227 ea being most preferred.
REFERENCES:
patent: 5039484 (1991-08-01), Chippett et al.
patent: 5039485 (1991-08-01), Conviser et al.
patent: 5118494 (1992-06-01), Schultz et al.
"Sterilization Techniques," Kirk-Othmer Encyclopedia of Chemical Technology, v. 21, pp. 626-644, 1983.
Iikubo Yuichi
Register W. Douglas
Robin Mark L.
Sweval Mark A.
Dawson E. Leigh
Great Lakes Chemical Corporation
Warden Robert J.
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