HYPERBRANCHED POLYMERIC DISPERSANTS AND NON-AQUEOUS PIGMENT DISPERSIONS

XAVIER ANDRE, (Inventor), Katrien Bernaerts, (Inventor)

Research output: Patent

Abstract

A polymeric dispersant having a hyperbranched polyurethane architecture obtained by reacting a polyisocyanate core with a mixture of a) 40 to 65 mol% of an anchor represented by Formula (I) and/or (II) wherein n represents an integer selected from 0 to 7; and X and Y each independently represent a primary amine group or a hydroxyl group; b) 5 to 25 mol% of a polypropylene oxide crosslinker; c) 15 to 40 mol% of a polypropylene oxide graft; and wherein the amount of the crosslinker and the graft taken together is at least 35 mol%; and wherein 100 mol% of the mixture corresponds with the total amount of isocyanate groups in the polyisocyanate core. Non-aqueous pigment dispersions, inkjet inks and methods for preparing them are also disclosed.

Original languageEnglish
Patent numberWO2011029831
IPCC09D 11/ 00 A I
Priority date10/09/09
Publication statusPublished - 17 Mar 2011

Cite this

ANDRE, XAVIER., & Bernaerts, K. (2011). IPC No. C09D 11/ 00 A I. HYPERBRANCHED POLYMERIC DISPERSANTS AND NON-AQUEOUS PIGMENT DISPERSIONS. (Patent No. WO2011029831).