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 |
Cite this
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HYPERBRANCHED POLYMERIC DISPERSANTS AND NON-AQUEOUS PIGMENT DISPERSIONS. / ANDRE, XAVIER (Inventor); Bernaerts, Katrien (Inventor).
IPC No.: C09D 11/ 00 A I. Patent No.: WO2011029831.Research output: Patent
TY - PAT
T1 - HYPERBRANCHED POLYMERIC DISPERSANTS AND NON-AQUEOUS PIGMENT DISPERSIONS
AU - ANDRE,, XAVIER
AU - Bernaerts,, Katrien
PY - 2011/3/17
Y1 - 2011/3/17
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 -