The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 2011
Filed:
Nov. 29, 2010
Phil Beckler, The Woodlands, TX (US);
Liwen Wei, The Woodlands, TX (US);
Phil Beckler, The Woodlands, TX (US);
Liwen Wei, The Woodlands, TX (US);
Shrieve Chemical Products, Inc., The Woodlands, TX (US);
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.