Abstract: Disclosed herein are 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane refrigerant or heat transfer fluid compositions further comprising and a fluoroether compound, which are useful in refrigeration or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab/single pass heat exchangers.
Type:
Grant
Filed:
April 17, 2007
Date of Patent:
April 1, 2008
Assignee:
E.I. du Pont de Nemours and Company
Inventors:
Barbara Haviland Minor, Mario J. Nappa, Allen C. Sievert