HYPERBRANCHED POLYMERIC DISPERSANTS AND NON-AQUEOUS PIGMENT DISPERSIONS

XAVIER ANDRE,; Katrien Bernaerts

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 language	English
Patent number	WO2011029831
IPC	C09D 11/ 00 A I
Priority date	10/09/09
Publication status	Published - 17 Mar 2011
Externally published	Yes

Cite this

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title = "HYPERBRANCHED POLYMERIC DISPERSANTS AND NON-AQUEOUS PIGMENT DISPERSIONS",

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.",

author = "XAVIER ANDRE, and Katrien Bernaerts",

year = "2011",

month = mar,

day = "17",

language = "English",

type = "Patent",

note = "WO2011029831; C09D 11/ 00 A I",

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PY - 2011/3/17

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N2 - 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.

AB - 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.

M3 - Patent

M1 - WO2011029831

ER -