Refrigeration working fluid compositions containing trifluoroethane and neopentyl glycol or trimethylolpropane esters of C.sub.7 and C.sub.9 acids
AssigneeExxon Chemical Patents Inc.
InventorsRichard H. Schlosberg, Carolyn B. Duncan, Martin A. Krevalis, Jr.
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Abstract
There are disclosed refrigeration working fluid compositions comprising 1,1,1-trifluoroethane refrigerant and either a neopentylglycol ester of 3,5,5-trimethylhexanoic acid or a trimethylolpropane ester of a mixture of 65 wt. % 3,5,5-trimethylhexanoic acid, 22.2 wt. % n-heptanoic acid and 12.8 wt. % methylhexanoic acid. The esters exhibit suitable viscosity ranges and miscibility with the refrigerant over a broad compositional range.
Claims4
A refrigeration working fluid comprising about 5-55 parts by weight of a synthetic ester lubricant and 95-45 parts by weight of 1,1,1-trifluoroethane refrigerant, the ester being either (a) neopentylglycol esterified with 3,5,5-trimethylhexanoic acid or (b) trimethylol propane esterified with a mixture of about 12.8 wt. % methylhexanoic acid, 22.2 wt. % n-heptanoic acid and 65% 3,5,5-trimethylhexanoic acid, the working fluid having miscibility value of -20.degree. C. or less.
Dependencies are inferred from the claim text.