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FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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The invention involves a synthetic oil made from pentaerythritol ester and synthetic fatty acids. To insure the efficiency of the synthetic oil in refrigeration machines running on freon-22, the use of the synthetic fatty acid with 5--9 atoms of carbon and antioxidant additive is suggested. Use of ionol in an amount of 0.5--1.0 wt percent or parahydroxydiphenylamine in an amount of 0.3--0.5 wt percent is also recommended. Author
APPROVED FOR PUBLIC RELEASE