EP 1042262 A1 20001011 - METHOD FOR PRODUCING ALKYLENE GLYCOL WITH A LOW CARBONYL COMPOUND CONTENT
Title (en)
METHOD FOR PRODUCING ALKYLENE GLYCOL WITH A LOW CARBONYL COMPOUND CONTENT
Title (de)
VERFAHREN ZUR HERSTELLUNG VON ALKYLENGLYKOL MIT NIEDRIGEM GEHALT AN CARBONYLVERBINDUNGEN
Title (fr)
PROCEDE DE PREPARATION D'ALKYLENEGLYCOL A FAIBLE TENEUR EN COMPOSES CARBONYLE
Publication
Application
Priority
- DE 19757711 A 19971223
- EP 9808462 W 19981223
Abstract (en)
[origin: DE19757711A1] The invention relates to a method for obtaining alkylene glycol with a low aldehyde content. According to said method, a mixture containing alkylene glycol is subjected to a definitive distillation process, said mixture containing formic acid or a formiate or a mixture of two or more formiates or a mixture of formic acid and one or more formiates.
IPC 1-7
IPC 8 full level
C07C 29/10 (2006.01); C07C 29/80 (2006.01); C07C 29/94 (2006.01); C07C 31/20 (2006.01)
CPC (source: EP KR US)
C07C 29/106 (2013.01 - EP US); C07C 29/80 (2013.01 - EP KR US); C07C 29/94 (2013.01 - EP US); Y02P 20/52 (2015.11 - EP US)
Citation (search report)
See references of WO 9933774A1
Designated contracting state (EPC)
BE CH DE ES FR GB IT LI NL
DOCDB simple family (publication)
DE 19757711 A1 19990701; CA 2314507 A1 19990708; CN 1283173 A 20010207; EP 1042262 A1 20001011; JP 2001527057 A 20011225; KR 20010033490 A 20010425; US 6329558 B1 20011211; WO 9933774 A1 19990708
DOCDB simple family (application)
DE 19757711 A 19971223; CA 2314507 A 19981223; CN 98812618 A 19981223; EP 9808462 W 19981223; EP 98966409 A 19981223; JP 2000526461 A 19981223; KR 20007006991 A 20000622; US 58122900 A 20000623