United States of America As Represented by the Secretary of the Air Force

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Thomas I Ito

Reinhold H Kratzer

Kazimiera J Paciorek

James H Nakahara

Jacquelyn Kaufman

Robert A Frosch

Robert W Rosser

Kazimiera L Paciorek

Fluorinated alkyl or alkylether 1,2,4-oxadiazole compounds are prepared by cyclizing the corresponding alkyl or alkylether imidoylamidoximes in vacuo or in an inert atmosphere at a temperature within the range of 40.degree. to 100.degree. C. for a period of 8 to 144 hours in the presence of an acid compound which can accept ammonia to form a salt. The imidoylamidoximes usable in this process may be either polymeric or nonpolymeric. The products, when polymeric, have excellent heat, chemical and solvent resistance.

Preparation of perfluorinated 1,2,4-oxadiazoles

A method for preparing unsymmetrical diphosphatetraazacyclooctatetraenes and the novel products produced thereby. The synthesis involves an interaction between an imido-tetraaryl-diphosphinic acid trihalide and a perfluorinated imidoylamidine in the presence of an acid acceptor.

Unsymmetrical diphosphatetraazacyclooctatetraenes

A method for synthesizing symmetrical diphosphatetraazacyclooctatetraenes and the products produced thereby. The synthesis involves effecting a reaction between a diaryltrihalophosphorane of a perfluoroalkyl amidine in the presence of an acid acceptor.

Symmetrical diphosphatetraazacyclooctatetraenes

Diphospha-s-triazines wherein the two phosphorus atoms are substituted by aromatic groups and the carbon atom is substituted by either a perfluoroalkyl or a perfluoroalkylether moiety. The triazines exhibit a broad range of properties and are useful as antioxidant-anticorrosion agents, lubricants, and hydraulic fluids.

Diphospha-s-triazines

A lubricant composition comprising a perfluorinated polyalkylether base fluid and a minor amount of a diphospha-s-triazine in which the two phosphorus atoms are substituted by aromatic groups and the carbon atom is substituted by a perfluoroalkyl or perfluoroalkylether moiety.

Perfluorinated polyalkylether based lubricant composition

A method for synthesizing monophospha-s-triazines by effecting a reaction between an amidoylamidine and a trihalo-phosphorane.

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Thomas I Ito