Monsanto Company

Solutia Incorporated

Melvin R Bagley

Dennis J Kalota

Burton B Crocker

John F Pysz, Jr

Monica C Dutton

Suseelan R Pookote

Electrolytic hydrodimeric coupling of dialkyl maleates in alkanol solutions containing an alkanol-soluble alkali metal alkoxide/quaternary ammonium tetrafluoroborate mixed supporting electrolyte yields tetraalkyl 1,2,3,4-butanetetracarboxylates.

Process for the preparation of tetraalkyl 1,2,3,4-butanetetracarboxylates

Mixtures of para-nitrochlorobenzene crystals and a liquid, ordinarily comprising the mother liquor of the crystals are continuously separated in one or more cylindrical presses in at least two stages. Reduction of the interstitial space causes the mother liquor to be forced out of the drainage aperatures thus purifying the crystals.

Crystal purification

An improvement in fluid-bed oxychlorination methods comprising in combination a generally cup-shaped container and an inverted generally cone-shaped gas distributor having a truncated apex the section of truncation defining a generally circular or polygonal opening, the lip portion of the container fitting against the similarly-shaped opening of the distributor.

Chlorination method

An apparatus for the distribution of gas in a fluidized bed reactor comprises in combination a generally cup-shaped container and an inverted generally cone-shaped gas distributor having a truncated apex the section of truncation defining a generally circular or polygonal opening, the lip portion of the container fitting against the similarly-shaped opening of the distributor.

Growing community of inventors

St. Louis, MO, United States of America

Melvin R Bagley