Preparation of alkoxylation products in the presence of mixed hydroxides modified with additives

US5741947A · kind A · utility

Assignee

• BASF SE

Inventors

• Gerhard Wolf · Mannheim, DE
• Bernd Burkhart · Mutterstadt, DE
• Guenter Lauth · Großkarlbach, DE
• Horst Trapp · Plankstadt, DE
• Alfred Oftring · Bad Dürkheim, DE

Key dates

• Filing date: Jan 29, 1996
• Grant date: Apr 21, 1998
• Expiry date: Jan 29, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C41/03
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Alkoxylation products are prepared by reacting compounds having active hydrogen atoms with C.sub.2 -C.sub.4 -alkylene oxides in the presence of a mixed hydroxide built up of polycations and modified with additives and having the general formula I or II EQU M(II).sub.1-x M(III).sub.x (OH).sub.2 !A.sub.x/n .multidot.m L(I) EQU LiAl.sub.2 (OH).sub.6 !A.sub.1/n .multidot.m L (II) where PA1 M(II) is at least one divalent metal ion, PA1 M(III) is at least one trivalent metal ion, PA1 A is at least one inorganic anion and PA1 L is an organic solvent or water, PA1 n is the valence of the inorganic anion A or in the case of a plurality of anions A is their mean valence and PA1 x can assume a value of from 0.1 to 0.5 and PA1 m can assume a value of from 0 to 10, as alkoxylation catalyst, wherein the mixed hydroxide contains additives.