Ester/polyolefin refrigeration lubricant

Details Ester/polyolefin refrigeration lubricant Ester/polyolefin refrigeration lubricant

1995-11-13

1997-07-15

Diamond, Alan

Compositions

Vaporization, or expansion, refrigeration or heat or energy...

With lubricants, or warning, stabilizing or anti-corrosion...

252 68, 508496, 508499, C09K 504, C10M12972

Patent

active

056480180

ABSTRACT:
Hydrogenated oligomers of C.sub.4 -C.sub.20 .alpha.-olefins are used in minor amounts to improve the lubricity of ester oils corresponding to the formula ROOC--CH.sub.2 CH.sub.2 --(ROOC--CHCH.sub.2).sub.m --C(COOR).sub.2 --(CH.sub.2 CHCOOR).sub.n --CH.sub.2 CH.sub.2 COOR in which the R's represent alkyl groups of 1-30 carbons, each of m and n is zero or a positive integer, and the sum of m and n in the molecules is an average of 0-30. The improved ester oils are particularly valuable for use as lubricants in refrigeration compositions containing fluorohydrocarbon refrigerants.

REFERENCES:
patent: 4175047 (1979-11-01), Schick et al.
patent: 4199461 (1980-04-01), Olund
patent: 4800030 (1989-01-01), Kaneko et al.
patent: 4968453 (1990-11-01), Wada et al.
patent: 4992183 (1991-02-01), Beimesch et al.
patent: 5021179 (1991-06-01), Zehler et al.
patent: 5347043 (1994-09-01), Sabahi et al.
patent: 5370812 (1994-12-01), Brown
patent: 5391312 (1995-02-01), Senaratne et al.
patent: 5399279 (1995-03-01), Sabahi et al.
patent: 5431835 (1995-07-01), Katafuchi et al.
patent: 5538661 (1996-07-01), Dawson et al.

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