Propoxylated/ethoxylated polyalkyleneimine dispersants

US6156720A · kind A · utility

Assignee

• BASF SE

Inventors

• Dieter Boeckh · Schifferstadt, DE
• Michael Ehle · Ludwigshafen, DE
• Angelika Funhoff · Schriesheim, DE
• Jurgen Mohr · Grünstadt, DE
• James Albert Cleary · Indian Springs, US
• Shulin Zhang · Sharonville, US
• Eugene Paul Gosselink · Cincinnati, US

Key dates

• Filing date: Jun 23, 1998
• Grant date: Dec 5, 2000
• Expiry date: Jun 23, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3723
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to an alkoxylated polyalkyleneimine soil dispersant having the formula: ##STR1## wherein R is C.sub.2 -C.sub.6 linear alkylene, C.sub.3 -C.sub.6 branched alkylene, and mixtures thereof; B is a continuation by branching; E is an alkyleneoxy unit having the formula: EQU --(R.sup.1 O).sub.m (R.sup.2 O).sub.n R.sup.3 wherein R.sup.1 is 1,2-propylene, 1,2-butylene, and mixtures thereof; R.sup.2 is ethylene; R.sup.3 is hydrogen, C.sub.1 -C.sub.4 alkyl, and mixtures thereof; m is from about 1 to about 10; n is from about 10 to about 40; w, x and y are each independently from about 4 to about 200; provided at least one --(R.sup.1 O) unit is attached to the backbone prior to attachment of an --(R.sup.2 O) unit and further provided m+n is at least 12.