Martin E Robinson

US Patent:

40720276, Feb 7, 1978

Filed:

Jan 19, 1977

Appl. No.:

5/760489

Inventors:

Morris B. Berenbaum - Summit NJ
Francis E. Evans - Hamburg NY
Richard E. Eibeck - Orchard Park NY
Martin A. Robinson - East Amherst NY

Assignee:

Allied Chemical Corporation - Morris Township NJ

International Classification:

C09K 504
F25B 1502

US Classification:

62112

Abstract:

A stabilized heat exchange medium is disclosed including a fluorocarbon, an absorbant and a tribasic phosphite stabilizer. The preferred absorbants are assymetrical furan derivatives containing at least 1 oxygen with a single bond to an adjacent carbon, and is most preferably an alkyl tetrahydrofurfuryl ether. The fluorocarbon contains 1 or 2 carbons, 1 or 2 hydrogens and the remainder chlorine and fluorine. The tribasic phosphites are of the formula (R. sub. 1 'O)(R. sub. 2 'O)(R. sub. 3 'O)P, wherein R. sub. 1 ', R. sub. 2 ' and R. sub. 3 ' are each independently alkyl, alkenyl, phenyl, alkylene phenyl, alkylene alkylphenyl or alkylphenyl.