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US 5,720,895 AGranted
Polyol ether derivatives and production methods therefor
AssigneeKao Corporation
InventorsShoji Nakagawa, Hiroki Sawada, Hiroyasu Togashi, Toshiya Hagihara
Life of this patent
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Abstract
Polyol ether derivatives, a method for producing the polyol ether derivatives, and a working fluid composition for a refrigerating machine containing a hydrofluorocarbon and a refrigeration oil containing the polyol ether derivatives as a base oil.
Claims9
A working fluid composition for a refrigerating machine, comprising a hydrofluorocarbon and a refrigeration oil containing as a base oil a polyol ether derivative represented by the following formula (XIII.sub.AA) or (XIII.sub.BB):
- ##STR48## wherein R.sup.1 to R.sup.6 may be identical or different, each representing a linear alkyl group having 1-14 carbon atoms, a branched alkyl group having 3-14 carbon atoms or a cyclic alkyl group having 3-14 carbon atoms;
- R.sup.7 represents an hydrogen atom, or a linear alkyl group having 1-13 carbon atoms, a branched alkyl group having 3-13 carbon atoms or a cyclic alkyl group having 3-13 carbon atoms;
- R.sup.8 represents a linear alkyl group having 1-13 carbon atoms, a branched alkyl group having 3-13 carbon atoms or a cyclic alkyl group having 3-13 carbon atoms;
- R.sup.7 and R.sup.8 may together join to form a ring with an alkylene group having 2-13 carbon atoms;
- the total number of carbon atoms is 8-40 for R.sup.1, R.sup.2, R.sup.3, R.sup.6, R.sup.7 and R.sup.8 in formula (XIII.sub.AA), and for R.sup.1, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 in formula (XIII.sub.BB), and is 1-13 for R.sup.7 and R.sup.8 in formulas (XIII.sub.AA and XIII.sub.BB);
- and the specific structures within the parenthesis may be arranged in any sequential order.
3 more elements
Dependencies are inferred from the claim text.