Compositions – Vaporization – or expansion – refrigeration or heat or energy... – With lubricants – or warning – stabilizing or anti-corrosion...
Reexamination Certificate
2010-11-29
2011-10-25
Ginty, Douglas M C (Department: 1765)
Compositions
Vaporization, or expansion, refrigeration or heat or energy...
With lubricants, or warning, stabilizing or anti-corrosion...
C508S501000, C426S611000, C426S612000, C554S030000, C554S213000
Reexamination Certificate
active
08043524
ABSTRACT:
Novel refrigeration compositions comprising at least one ester of a hydroxycarboxylic acid which can have a chain length in the range of from 8 to 22 carbon atoms. The composition can contain a carrier fluid or base oil selected from alkylbenzenes, alkylated naphthenics, polyalkylene glycols, polyvinylethers, polyalphaolefins, mineral oils, polyol esters, and combinations thereof, providing improved fluidity and heat transfer, and enhanced oil return. A method of making a refrigeration composition by preparing at least one ester by esterifying a first component comprising at least one hydroxycarboxylic acid with a second component comprising at least one alcohol and combining the at least one ester with a base oil selected from the group consisting of alkylbenzenes, alkylated naphthenics, polyalkylene glycols, polyvinylethers, polyalphaolefins, mineral oils, polyol esters, and combinations thereof.
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Beckler Phil
Wei Liwen
Ginty Douglas M C
Porter Hedges LLP
Shrieve Chemical Products, Inc.
Westby Timothy S.
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