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:
Jun. 23, 2015
Filed:
Oct. 27, 2010
Brett L. Van Horn, King of Prussia, PA (US);
Christopher A. Bertelo, Doylestown, PA (US);
Scott C. Schmidt, Woodbury, MN (US);
Noah E. Macy, Royersford, PA (US);
George J. Papakonstantopoulos, King of Prussia, PA (US);
Brett L. Van Horn, King of Prussia, PA (US);
Christopher A. Bertelo, Doylestown, PA (US);
Scott C. Schmidt, Woodbury, MN (US);
Noah E. Macy, Royersford, PA (US);
George J. Papakonstantopoulos, King of Prussia, PA (US);
Arkema Inc., King of Prussia, PA (US);
Abstract
The present invention relates to polymeric oil-return agents which solubilize or disperse mineral oil and/or synthetic oil lubricants with hydrofluorocarbon, hydrochlorofluorocarbon, and hydrofluoroolefin-based refrigerants and refrigerant compositions containing them. The polymeric oil-return agents are random copolymers containing less than about 30 wt % fluorine and produced from at least one monomer providing compatibility with the oil phase and at least one monomer providing compatibility with the refrigerant phase. The polymeric oil-return agents provide for more efficient return of mineral oil and/or synthetic oil lubricants from non-compressor zones back to a compressor zone in a refrigeration system.