Normally liquid, omega-hydrofluoroalkyl ether compounds (and selected mixtures thereof) have a saturated perfluoroaliphatic chain of carbon atoms interrupted by one or more ether oxygen atoms. The compounds can be prepared, e.g., by decarboxylation of the corresponding fluoroalkyl ether carboxylic acids and are useful, e.g., in cleaning and drying applications.

Omega-hydrofluoroalkyl ethers, precursor carboxylic acids and derivatives thereof, and their preparation and application

Glymes, also known as glycol diethers, are saturated non-cyclic polyethers containing no other functional groups. Most glymes are usually less volatile and less toxic than common laboratory organic solvents; in this context, they are more environmentally benign solvents. However, it is also important to point out that some glymes could cause long-term reproductive and developmental damage despite their low acute toxicities. Glymes have both hydrophilic and hydrophobic characteristics that common organic solvents lack. In addition, they are usually thermally and chemically stable, and can even form complexes with ions. Therefore, glymes are found in a broad range of laboratory applications including organic synthesis, electrochemistry, biocatalysis, materials, Chemical Vapor Deposition (CVD), etc. In addition, glymes are used in numerous industrial applications, such as cleaning products, inks, adhesives and coatings, batteries and electronics, absorption refrigeration and heat pumps, as well as pharmaceutical formulations, etc. However, there is a lack of a comprehensive and critical review on this attractive subject. This review aims to accomplish this task by providing an in-depth understanding of glymes' physicochemical properties, toxicity and major applications.

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Glymes as versatile solvents for chemical reactions and processes: from the laboratory to industry

Liquid-phase fluorination

Photosensitized (electron transfer) carbon-carbon bond cleavage of radical cations : The diphenylmethyl system

Thixotropic, lubricious coatings are provided on the web or surface area surrounding a valve slit or the like in medical, needleless coupling sites. The coating comprises a combination of fluorinated polyalkyl ether and a thixotropic agent such as fumed silica.

Methods and compositions for increasing lubricity of rubber surfaces

Perfluorinated polyethers having the formula R.sub.f O--(CF.sub.2 CF.sub.2 O).sub.n --R'.sub.f wherein n is an integer of 1-11 and each of Rf and R'f is a perfluorinated C1 -C5 -alkyl radical, dimers of such polyethers and carbon to carbon intramolecularly coupled cyclic derivatives of such polyethers are produced by direct fluorination of the polyethers in an inert solvent. Compositions of the perfluorinated polyethers and their derivatives are useful as functional fluids.

Novel perfluorinated polyethers and process for their preparation

Anomalous sodium hydride reduction of norcamphor and 5-norbornen-2-one

The conrotatory ring opening of -bicyclo[4.2.0] Oct-7-ene to , -1,3-cyclooctadiene, II. A kinetic treatment

A perfluorinated polyether having the formula R.sub.f O--(CF.sub.2 CF.sub.2 O).sub.n --R'.sub.f wherein n=3-11 and Rf and Rf ' are perfluorinated C1 -C5 alkyl radicals is used in vapor phase soldering applications. Especially useful for such applications is perfluoroheptaglyme.

Vapor phase soldering using certain perfluorinated polyethers

Oxidation of an unsaturated amine to an unsaturated nitrile is carried out in presence of cuprous chloride, a nitrogen base and a halide salt soluble in the nitrogen base.

John S. McConaghy

Papers

Novel perfluorinated polyethers and process for their preparation

Anomalous sodium hydride reduction of norcamphor and 5-norbornen-2-one

The conrotatory ring opening of -bicyclo[4.2.0] Oct-7-ene to , -1,3-cyclooctadiene, II. A kinetic treatment

Vapor phase soldering using certain perfluorinated polyethers

Oxidation of unsaturated amines