Antioxidant Action of Metals and Organometal Compounds in Fluoroesters and Polyhenyl Ethers
Abstract
Three fluoroesters and a polyphenyl ether (bis(phenoxy-phenoxy)- benzene) were subjected to oxidizing conditions at 437 to 650 F in the presence and absence of the metals and organometal compounds, and data were obtained to show the oxidation inhibition due to the additive. At 437 F Cu and steel improved the stability of the fluoroalcohol (psi-alkyl) ester f 3- methylglutaric and camphoric acids. At 482 F, the camphorate was substantially tabilized by Cu, Ba, monel, and Cr; by toluates or benzoates of Ba, Ni, Cr, Co, Mn, Pr, Ti, Yb, and Sr; by cerium disalicylalpropylene diamine and cerium (psiheptyl) hydrogen-3-methylglutarate; and by the Cu salts of perfluoroundecanoic acid, (psi-heptyl) hydrogen 3-methylglutarate, toluic acid, and phenylstearic acid. Bis(psi-amyl)2,2-diphenate possessed generall high inherent stability up to 617 F. At 642 F the ester underwent extensive pyrolysis, which the inhibitors did not prevent. The polyphenyl ether, bis(phenoxy-phenoxy)benzene, was effectivel protected from oxidation at 600 F by copper, cupric toluate, and ceric toluate. At 650 F effective inhibitors were Ba metal, and the toluates or benzoates of Ba, Mn, Ce, Ni, Pb, Pr, Co, Cr, Ti, Yb. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 05, 1962
- Accession Number
- AD0293981
Entities
People
- C. O. Timmons
- E. R. Russ
- H. Ravner
Organizations
- United States Naval Research Laboratory