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:
Jan. 03, 1995
Filed:
Dec. 21, 1989
Raymond H Thomas, Amherst, NY (US);
David P Wilson, Williamsville, NY (US);
Hang Pham, North Tonawanda, NY (US);
John W Pelava, Buffalo, NY (US);
AlliedSignal Inc., Morris Township, Morris County, NJ (US);
Abstract
The present invention provides a composition for use in compression refrigeration and air-conditioning. The composition comprises: (a) a refrigerant selected from the group consisting of hydrofluorocarbon and hydrochlorofluorocarbon; and (b) a sufficient amount to provide lubrication of at least one fluorinated silicone. The fluorinated silicone has units therein selected from the group consisting of fluoroalkyl and alkyl. If both fluoroalkyl and alkyl units are present in the fluorinated silicone, at least 25% of the units are fluoroalkyl. The fluorinated silicone has a molecular weight between about 280 and about 6,000; a viscosity of about 10 to about 300 centistokes at 38.degree. C. (0.1 to 3 cm.sup.2 /sec), and is miscible in combination with the refrigerant in the range between -40.degree. C. and at least +20.degree. C.