Roylance,Abrams,Berdo & Goodman, L.L.P.
Polyol ester based-lubricant
 A polyol ester-based lubricant comprising a polyol ester (A) and a polyol ester (B); PA1 the polyol ester (A) comprising an ester of a neopentyl polyol and an acid residue of carbon number of 6-17, in which alpha-carbon in the acid residue of the polyol ester is tertiarily branched, and when alkyl groups having 4 or more carbon atoms are bonded to the alpha-carbon, the alkyl groups are branched, and PA1 the polyol ester (B) comprising an ester of a neopentyl polyol and an acid residue of carbon number of 6-17, in which alpha-carbon in the acid residue of the polyol ester is secondarily or tertiarily branched and alkyl groups bonded to the alpha-carbon are straight is provided. This polyol ester-based lubricant has high performance, as demonstrated by high compatibility with substitute fluorocarbons in a kinematic viscosity range of 28 to 40 cst at 40.degree. C., excellent hydrolysis resistance, and a low pour point. 
Mitsubishi Gas Chemical Company, Inc.
C C C C C C C C C C C C C C C C C C C C C C
C10N C10N C10N C10M C10M C10M C10M C09K C09K C10M C10N C09K C10M C10N C10M C10M C10N C10N C10N C10M C10N C10N
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Kinji Yoshifumi Yoshihiro
Kato Sato Shiokawa