Back to results
US 5,401,433 AGranted
Working fluid composition having ketone-containing compound for use in refrigeration system
AssigneeKao Corporation
InventorsHiroki Sawada, Toshiya Hagihara, Yuichiro Kobayashi, Akimitsu Sakai, Hideo Suzuki, Toshihiro Tanaka, Hiroshi Nagumo, Yukinaga Yokota
Life of this patent
Estimating the term…
Abstract
A working fluid composition for use in a refrigeration system which comprises a refrigerating oil comprising a compound having one or more ketone groups in the molecular structure as a base oil and a hydrofluorocarbon.
Claims12
A working fluid composition for use in a refrigeration system which comprises a refrigerating oil comprising a compound represented by Formula (I) as a base oil and a hydrofluorocarbon:
- ##STR17## wherein R.sub.1 and R.sub.2, which may be identical or different, independently represent a hydrogen atom, a linear or branched alkyl group, alkenyl group or arylalkyl group each having up to 36 carbon atoms, or a phenyl group which may be substituted with a linear or branched alkyl group or alkenyl group each having up to 15 carbon atoms;
- R.sub.3 and R.sub.1, which may be identical or different, independently represent a linear or branched alkyl group, alkenyl group or arylalkyl group each having up to 36 carbon atoms, or a phenyl group which may be substituted with a linear or branched alkyl group or alkenyl group each having up to 15 carbon atoms;
- n represents an integer of 1 to 19;
- m represents an integer of 1 to 5 and said compound has a number of carbon atoms of not less than 9.
1 more element
Dependencies are inferred from the claim text.