Monsanto Company

John S McConaghy, Jr

Dennis J Kalota

Paul W Foerst

Paul H Liu

Frank R Feher, Jr

Robert A Keppel

Dennis C Owsley

David O Fisher

Ronald E Zielinski

Oxidation inhibited fluid compositions are prepared by mixing an aromatic ether represented by the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 independently are phenyl, biphenyl, and terphenyl and n is an integer of from zero (0) to 5, and an alkali metal precursor compound convertible under alkali metal precursor compound conversion conditions into an alkali metal salt of oxalic acid, followed by heating the aromatic ether/alkali metal precursor compound mixture at an elevated temperature in the presence of molecular oxygen or a molecular oxygen-containing gas and for a time effective to convert the alkali metal precursor compound into the corresponding alkali metal salt of oxalic acid and form a colloidal dispersion of the aromatic ether and an oxidation inhibiting amount of the alkali metal salt of oxalic acid. The colloidal dispersion is separated from noncolloidally dispersed solid material to thereby recover the oxidation inhibited fluid composition. The fluid compositions are characterized by being transparent when subjected to visual inspection with white light shining through the fluid compositions at a 180.degree. angle to the line of sight.

Process for the preparation of oxidation inhibited fluid compositions

Fluid compositions useful to serve as oxidation inhibited functional fluids are provided. Such fluid compositions comprise a colloidal dispersion of an aromatic ether represented by the formula ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 independently are phenyl, biphenyl, and terphenyl and n is an integer of from zero (0) to 5, and an oxidation inhibiting amount of an alkali metal salt of oxalic acid.

Oxidation inhibited fluid compositions

Perfluorinated polyethers having the formula

Perfluorinated polyethers and process for their preparation

Novel perfluorinated polyethers and process for their preparation

A perfluorinated polyether having the formula

Vapor phase soldering using certain perfluorinated polyethers

A process for the production of unsaturated primary amines which comprises reacting, in the substantial absence of molecular oxygen, an amine having the formula (R.sub.1 HC=CR.sub.2 CH.sub.2)m N H (3-m), wherein m is 2 or 3 and R.sub.1 and R.sub.2 are hydrogen or C.sub.1 - C.sub.3 alkyl groups, with ammonia in the presence of a catalyst comprising palladium or platinum atoms bearing phosphorus-containing ligands, the reaction being carried out at a temperature of from 0.degree. to 250.degree. C in the presence of a solvent for the amine and the catalyst.

Preparation of unsaturated primary amines

An oxidation process for the conversion of an unsaturated amine to an unsaturated nitrile in which the oxidation reaction takes place in the presence of a nitrogen base, a cuprous halide and an alcoholic compound.

Oxidation of unsaturated amines

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.

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St. Louis, MO, United States of America

John S McConaghy, Jr