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

Children's Hospital Research Foundation

Adamantech, Inc.

Christ Tamborski

Carl E Snyder, Jr

John B Christian

Leland C Clark, Jr

Theodore Psarras

Method of X-raying animals using as a contrast agent a perfluorobromoalkyl ether of the formula C.sub.m F.sub.2m+1 OC.sub.n F.sub.2n Br where m and n independently are integers of from 2 to 6, wherein the ether is used either neat or in an aqueous dispersion such as an emulsion.

Use of perfluorobromoalkyl ethers as X-ray contrast agents

Fluorinated phosphines having the general formula ##STR1## wherein R.sub.f OR.sub.f -- is a perfluoroalkylether group containing at least one ether linkage are useful as antioxidation additives for perfluorinated fluids.

Perfluoroalkylether substituted phenyl phosphines

A lubricant composition comprising a base fluid having the general formula

Fluorinated aliphatic polyalkylether lubricant with an additive composed

Perfluorinated aliphatic polyalkylether lubricant with an additive

A grease composition comprising a major amount of a polyfluoroalkylether base fluid of the general formula

Oxidation stable polyfluoroalkylether grease compositions

A mixture of tetraalkylsilanes is prepared by reacting a mixture of at least two organometallic compounds with a silicon tetrahalide or an alkyl silicon trihalide. The mixture of silanes is useful as a hydraulic fluid.

Synthesis of tetraalkylsilanes

An antirust, anticorrosion grease composition comprising a major amount of a fluorinated polysiloxane base fluid, a minor amount of a fluorocarbon polymer thickening agent, and a rust and corrosion inhibiting amount of a benzimidazole.

Grease compositions based on fluorinated polysiloxanes

An antirust, anticorrosion grease composition comprising a major amount of a polyfluoroalkylether base fluid, a minor amount of a fluorocarbon polymer thickening agent, and a rust and corrosion inhibiting amount of a benzimidazole.

Grease compositions based on polyfluoroalkylethers

Benzimidazoles substituted in the 2-position with a perfluoroalkyleneether radical. The compounds are useful as antirust and anticorrosion additives in grease formulations based on fluorine-containing fluids.

Fluorine-containing benzimidazoles

An antirust, anticorrosion grease composition comprising a major proportion of a perfluorinated polyalkylether base fluid, a minor proportion of a fluorocarbon polymer thickening agent, and a rust and corrosion inhibiting amount of a fluorine-containing benzoxazole.

Grease compositions

Benzoxazoles substituted in the 2-position with a perfluoroalkylether radical and bis-benzoxazoles in which the 2-position carbon atoms of the benzoxazole rings are attached to one another with a perfluoroalkylene or perfluoroalkyleneether radical. The compounds are useful as anti-rust additives in grease formulations based on fluorine-containing fluids.

Fluorine-containing benzoxazoles

A lubricant composition comprising (1) a base fluid having the following formula:

Linear fluorinated polyether lubricant compositions containing

Omega-carbomethoxyperfluoroalkylene ether iodides are reacted with metallic zinc to yield alpha-omega perfluoroalkyleneether diesters. The diesters are reacted with ammonia to form diamides, the diamides are reacted with phosphorus pentoxide to form dinitriles, and the dinitriles are esterified with methanol to form diimidate esters. The diimidate esters are particularly useful as monomers in synthesizing perfluoroalkylene ether bibenzoxazole polymers possessing thermooxidative stability and outstanding low temperature viscoelastic properties.

Growing community of inventors

Dayton, OH, United States of America

Christ Tamborski