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US 2026/0117025 A1Published application
Non-Isocyanate Polyurethane Dispersion
AssigneeMatereal, Inc.
InventorsPhilip T. PIENKOS, Zixu HUANG, Jordan HARRIS
Life of this patent
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Abstract
This application provides a novel waterborne non-isocyanate polyurethane (NIPU) dispersion comprising an NIPU prepared using an amidoamine, a cyclic carbonate, and a dispersing agent, as well as a method of making the waterborne NIPU dispersion.
Claims25
A waterborne non-isocyanate polyurethane (NIPU) dispersion, wherein the NIPU is prepared by reacting a cyclic carbonate monomer, an amidoamine monomer, a dispersing agent, and an optional hard-segment chain extender (preferably a C4-6 diamine);
- wherein the cyclic carbonate monomer comprises at least two ethylene carbonate groups, wherein the NIPU comprises a plurality of hydroxyl groups, wherein the amidoamine comprises at least two primary amine, wherein the dispersing agent is selected from a dianhydride, a diamine comprising a tertiary amine, a diamino PEG (i.e., H2N-PEG-NH2), and a diamino acid.
(canceled)
(canceled)
A waterborne NIPU dispersion prepared by a three-stage process:
- 1) react the cyclic carbonate with the amidoamine and an optional C4-6 diamine to produce a reactive NIPU prepolymer comprising amine end groups, wherein the molar ratio of the total amine end groups over the cyclic carbonate is above 1;
- 2) react the reactive NIPU prepolymer with a dispersing agent to introduce an inoic or ionizable group to the NIPU, thereby conferring cationic, anionic, or amphoteric character to the polymer;
- and
- 3) neutralize the solution with a neutralizing agent comprising a counterion corresponding to the ionizable groups, thereby producing a water-dispersible NIPU polymer.
1 more element
25-26. (canceled)
Dependencies are inferred from the claim text.