PROCESS FOR ISOLATING POLYFUNCTIONAL ALCOHOL FROM WATER- BASED WATER-SOLUBLE SALT SOLUTION

PROBLEM TO BE SOLVED: To inexpensively separate polyfunctional alcohols free from trimethylolpropane from water-based water-soluble salt solution through electrodialysis in no need of solvent. SOLUTION: Polyfunctional alcohols (from which trimethylol-propane is excluded, preferably selected from dio...

Full description

Saved in:
Bibliographic Details
Main Authors VAN DER VELDEN PAULUS MARTINUS, HOERPEL GERHARD DR, KUPPINGER FRANZ-FELIX DR, SCHMIDT FRIEDRICH-GEORG
Format Patent
LanguageEnglish
Published 28.03.2000
Edition7
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To inexpensively separate polyfunctional alcohols free from trimethylolpropane from water-based water-soluble salt solution through electrodialysis in no need of solvent. SOLUTION: Polyfunctional alcohols (from which trimethylol-propane is excluded, preferably selected from diols, ether diol, triol of oligomers or polymers and polyfunctional high alcohols of polymers) are separated by electrodialysis. The apparatus for the electro-dialysis comprises an electrodialyzer equipped with three separated circulation systems, a receiver belonging to the dialyzer, and five serially connected cell units. In the figure, M and M+ are each metal and metal ion, Polyol is a polyfunctional alcohol, K is a cationic ion exchange membrane, and A is an anionic ion exchange membrane.
Bibliography:Application Number: JP19990236134