Inventor

FUCHS HUGO

DE50 patents

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FUCHS HUGO

BASF AG

Recovery of caprolactam from oligomers and/or polymers of caprolactam

Recovery of caprolactam from polycaprolactam

Preparation of aqueous solutions of free hydroxylamine

Platinum-on-graphite catalysts and the use thereof

Workup of distillation residues from the purification of caprolactam

Obtaining caprolactam from epsilon-aminocaproic acid

Continuous purification of caprolactam

Method of separation by fractional crystallization from a liquid mixture

Purification of caprolactam

Purification of caprolactam

Hydrogenation catalyst based on a platinum metal partially poisoned with finely divided sulfur

Preparation of caprolactam by Beckmann rearrangement of cyclohexanone oxime

Preparation of hydroxylammonium salts

Method of regenerating inactive and poisoned platinum catalysts

Preparation of hydroxylammonium salts

Working up wastewaters containing hydroxylamine or its salts

Recovery of caprolactam from oligomers and/or polymers of caprolactam

Process for obtaining caprolactam by cleaving caprolactam oligomers

Continuous preparation of ε-caprolactam by Beckmann rearrangement

Manufacture of cyclohexanone oxime

Platinum-on-graphite catalysts

Obtaining caprolactam by cleavage of molten polycaprolactam

Recovery of caprolactam from distillation residues obtained in the purification of caprolactam

Recovery of caprolactam from caprolactam distillation low boilers or high boilers or mixtures thereof

Neutralization of reaction mixtures obtained by Beckman rearrangement of cyclohexanone oxime

Purification of frozen crystal layers

Preparation of caprolactam

Method of purifying caprolactam

Obtaining caprolactam by cleaving oligomers of caprolactam

Process for obtaining coarsely crystalline pure ammonium sulfate

Method of use of a hydrogenation catalyst based on a platinum metal partially poisoned with finely divided sulfur

Purification of caprolactam

Work-up of aqueous mother liquors containing hydrochloric acid, sulfuric acid and their hydroxyl-ammonium and ammonium salts

Purification of cyclohexanone oxime containing ammonium sulfate

Preparation of pure hydroxylammonium salts of fatty acids of 1 to 4 carbon atoms

Preparation of hydroxylamine-O-sulfonic acid

Purification of crude caprolactam

Preparation of ε-caprolactam by catalytic rearrangement of cyclohexanone-oxime

Manufacture of olefinically unsaturated aliphatic or cycloaliphatic hydrocarbons

Elimination of hydroxylammonium salts from wastewaters containing such salts

Continuous extraction of caprolactam from an aqueous solution containing caprolactam and its oligomers

Continuous extraction of caprolactam from crude lactam

Processing polycaprolactam extraction liquors

Storability of molten cyclohexanone oxime

Partial dehydration of cyclohexanone oxime

Hydrogenation catalyst based on a platinum metal partially poisoned with finely divided sulfur

Preparation of crystalline hydroxylammonium sulfate having a low ammonium sulfate content

Process for the rapid cooling of gases which contain caprolactam vapor

Removal of water-immiscible solvents from offgases containing same

BASF CORP

Process for the purification of crude caprolactam