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

Other

Ultraystems Defense and Space, Inc.

James H Nakahara

Kazimiera J Paciorek

Reinhold H Kratzer

Thomas I Ito

David H Harris

Mark E Smythe

Jacquelyn Kaufman

Wen-Huey Lin

Steven R Masuda

Perfluoroalkyl and perfluoroalkylether substituted aromatic phosphates, phosphonates and related compositions prepared by reaction of pefluoroalkyl or pefluoroakylether substituted phenols with mono- and dihalophosphite and primary and secondary phosphonyl halides are disclosed. These materials are useful as antioxidant, anticorrosion, antirust, and lubricity enhancing agents for perfluoropolyalkylether fluids.

Perfluoroalkyl and perfluoroalkylether substituted aromatic phosphates,

A soluble, processible ceramic precursor, comprising A1N and BN in fixed proportion, which on pyrolysis is transformed into pure carbon free A1NBN ceramic, of the formula:

Precursor for A1NBN ceramic and method of use

This invention concerns itself with a novel class of dihalodiphospha-s-triazines as exemplified by the compound 1,3-bis[phenylchloro-phospha]-5-perfluoro-n-heptyl-2,4,6-triazines as well as their thio and azido substituted derivatives.

Halo-substituted diphospha-s-triazines and their derivatives

This invention concerns itself with a class of novel dihalo-substituted monophospha-s-triazines as exemplified by the compounds 1-dichlorophospha-3,5-bis(perfluoro-n-heptyl)-2,4,6-triazine and 1-dichlorophospha-3,5-bis[C.sub.3 F.sub.7 OCF(CF.sub.3)CF.sub.2 OCF(CF.sub.3)]-2,4,6-triazine, as well as their thio and azido derivatives.

Dihalo-monophospha-s-triazines and their derivatives

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.

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Irvine, CA, United States of America

James H Nakahara