Lubrication for refrigerant heat transfer fluids

Details Lubrication for refrigerant heat transfer fluids Lubrication for refrigerant heat transfer fluids

1990-07-12

1991-06-04

Howard, Jacqueline V.

Compositions

Electrolytes for electrical devices

252 56S, 252 68, C10M12978

Patent

active

050211790

ABSTRACT:
Esters and mixtures of esters of polyhydric alcohols, e.g., of pentaerythritol, in which at least 22 number percent of the acyl groups in the esters are either branched or contain no more than six carbon atoms, are effective lubricants and/or lubricant base stocks for chlorine-free fluorocarbon refrigerant heat transfer fluids, particularly for chlorine-free heat transfer fluids such as Refrigerant 134a (1,1,1,2-tetrafluoroethane).

REFERENCES:
patent: 2852470 (1958-09-01), Henne et al.
patent: 2926139 (1960-02-01), Mott et al.
patent: 3560387 (1971-02-01), Schritt
patent: 3562300 (1971-02-01), Chao et al.
patent: 3878112 (1975-04-01), Luck
patent: 4755316 (1988-07-01), Magid et al.
patent: 4826633 (1989-05-01), Carr et al.
patent: 4851144 (1989-07-01), McGraw et al.
Short, Glenn D., "Synthetic Lubricants and Their Refrigerant Applications", 44th Annual Meeting of the Society of Tribologists and Lubrication Engineers, Atlanta, GA, May 1-4, 1989, pp. 1-9.

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