CARBON DIOXIDE-BASED WORKING FLUIDS FOR REFRIGERATION AND AIR CONDITIONING SYSTEMS
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United States of America Patent
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Issued Date -
Jul 22, 2010
app pub date -
Jan 8, 2010
filing date -
Jan 16, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A working fluid comprising (a) a refrigerant comprising carbon dioxide and (b) a poly(neopentylpolyol)ester composition produced by reacting a neopentylpolyol having the formula:OH and n is a number from 1 to 4, with at least one monocarboxylic acid having 2 to 15 carbon atoms in the presence of an acid catalyst and at a mole ratio of carboxyl groups to hydroxyl groups of less than 1:1 to form a partially esterified composition. The partially esterified poly(neopentyl)polyol composition is then reacted with additional monocarboxylic acid having 2 to 15 carbon atoms to form a final poly(neopentylpolyol)ester composition.
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