Compositions – Electrolytes for electrical devices
Patent
1994-11-18
1996-03-12
Kalafut, Stephen
Compositions
Electrolytes for electrical devices
252 68, C09K 500, C10M13316
Patent
active
054983568
ABSTRACT:
The present invention relates to a lubricated refrigerant for use in refrigerators employing hydrofluorocarbon coolants such as R 134a, R 32, R 125 and the like. The lubricated refrigerant contains fluorocarbon coolant, synthetic oil and a carbodiimide compound represented by the following general formula. R.sub.1 --N.dbd.C.dbd.N--R.sub.2, wherein R.sub.1 and R.sub.2 represent hydrogen atoms or hydrocarbly groups or nitrogen and/or oxygen containing hydrocarbly groups, and R.sub.1 and R.sub.2 may be the same or different groups. The refrigerant composition according to the present invention preferably contains said hydrofluorocarbon coolant and said lubricant at a given blending ratio.
REFERENCES:
patent: 4029702 (1977-06-01), Piccolini
patent: 4098710 (1978-07-01), Elliott et al.
patent: 4490266 (1984-12-01), Hentschel et al.
Derwent English language abstract of Dutch 144,982B. (no date) (Feb. 1975).
Kamakura Tamiji
Namiki Masato
Namiwa Kimiyoshi
Tanaka Noriyoshi
Tatsumi Yukio
Asahi Denka Kogyo K.K.
Kalafut Stephen
Silbermann James M.
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