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US 12,624,243 B2Granted
Graft polyurethane copolymer dispersions
AssigneeHewlett-Packard Development Company, L.P.
InventorsZhang-Lin Zhou, Yubai Bi, Qianhan Yang
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Abstract
A graft polyurethane copolymer dispersion can include dispersed polyurethane particles including a graft polyurethane copolymer. The graft polyurethane copolymer in this example includes a polyurethane backbone, a graft side-chain polymer attached to the polyurethane backbone, sulfonic acid groups, and isocyanate-generated amines. The graft side-chain polymer can include a poly(meth)acrylic moieties with C1 to C12 alkyl pendant groups, polyalkylene oxide pendant groups, or a combination thereof.
Claims17
A graft polyurethane copolymer dispersion, comprising dispersed polyurethane particles including a graft polyurethane copolymer, wherein the graft polyurethane copolymer consists of:
- a polyurethane backbone that is either:
- a) a reaction product of i) a polyisocyanate and ii) a polycarbonate polyol;
- or
- b) a reaction product of i) a polyisocyanate and ii) a polyether polyol selected from the group consisting of ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, and polyethylene-polypropylene glycol;
- or
- c) a reaction product of i) a polyisocyanate and ii) a polyol selected from the group consisting of a polyether polyol having a weight-average molecular weight of from 700 Mw to 3500 Mw and a polycarbonate polyol;
- a graft side-chain polymer attached to the polyurethane backbone, wherein the graft side-chain polymer includes poly(meth)acrylic moieties with C1 to C12 alkyl pendant groups, polyalkylene oxide pendant groups, or a combination thereof;
- sulfonic acid groups;
- and
- isocyanate-generated amines,
- wherein the graft polyurethane copolymer has a weight-average molecular weight ranging from 10,000 Mw to 150,000 Mw.
8 more elements
An ink composition, comprising:
- a pigment;
- an ink vehicle including water and organic co-solvent;
- and
- from 1 wt % to 15 wt % of polyurethane particles including a graft polyurethane copolymer based on the total weight of the ink composition, the graft polyurethane copolymer consisting of:
- a polyurethane backbone that is either:
- a) a reaction product of i) a polyisocyanate and ii) a polycarbonate polyol;
- or
- b) a reaction product of i) a polyisocyanate and ii) a polyether polyol selected from the group consisting of ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, and polyethylene-polypropylene glycol;
- or
- c) a reaction product of i) a polyisocyanate and ii) a polyol selected from the group consisting of a polyether polyol having a weight-average molecular weight of from 700 Mw to 3500 Mw and a polycarbonate polyol;
- a graft side-chain polymer attached to the polyurethane backbone, wherein the graft side-chain polymer includes a poly(meth)acrylic moieties with C1 to C12 alkyl pendant groups, polyalkylene oxide pendant groups, or a combination thereof;
- sulfonic acid groups;
- and
- isocyanate-generated amines,
- wherein the graft polyurethane copolymer has a weight-average molecular weight ranging from 10,000 Mw to 150,000 Mw.
12 more elements
A multi-fluid kit for imaging, comprising:
- an ink composition, comprising:
- a pigment;
- an ink vehicle including water and organic co-solvent;
- and
- from 1 wt % to 15 wt % of polyurethane particles based on a total weight of the ink composition, the polyurethane particles including a graft polyurethane copolymer consisting of a polyurethane backbone, a graft side-chain polymer attached to the polyurethane backbone, sulfonic acid groups, and isocyanate-generated amines, wherein the graft side-chain polymer includes a poly(meth)acrylic moieties with C1 to C12 alkyl pendant groups, polyalkylene oxide pendant groups, or a combination thereof, wherein the graft polyurethane copolymer has a weight-average molecular weight ranging from 10,000 Mw to 150,000 Mw, and wherein the polyurethane backbone is either:
- a) a reaction product of i) a polyisocyanate and ii) a polycarbonate polyol;
- or
- b) a reaction product of i) a polyisocyanate and ii) a polyether polyol selected from the group consisting of ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, and polyethylene-polypropylene glycol;
- or
- c) a reaction product of i) a polyisocyanate and ii) a polyol selected from the group consisting of a polyether polyol having a weight-average molecular weight of from 700 Mw to 3500 Mw and a polycarbonate polyol;
- and
- a secondary fluid composition.
9 more elements
A method of printing, comprising:
- ejecting an ink composition onto a media substrate, the ink composition including:
- a pigment;
- an ink vehicle including water and organic co-solvent;
- and
- from 1 wt % to 15 wt % of polyurethane particles based on a total weight of the ink composition, the polyurethane particles including a graft polyurethane copolymer consisting of:
- a polyurethane backbone that is either:
- a) a reaction product of i) a polyisocyanate and ii) a polycarbonate polyol;
- or
- b) a reaction product of i) a polyisocyanate and ii) a polyether polyol selected from the group consisting of ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, and polyethylene-polypropylene glycol;
- or
- c) a reaction product of i) a polyisocyanate and ii) a polyol selected from the group consisting of a polyether polyol having a weight-average molecular weight of from 700 Mw to 3500 Mw and a polycarbonate polyol;
- a graft side-chain polymer attached to the polyurethane backbone, wherein the graft side-chain polymer includes a poly(meth)acrylic moieties with C1 to C12 alkyl pendant groups, polyalkylene oxide pendant groups, or a combination thereof;
- sulfonic acid groups;
- and
- isocyanate-generated amines,
- wherein the graft polyurethane copolymer has a weight-average molecular weight ranging from 10,000 Mw to 150,000 Mw.
13 more elements
Dependencies are inferred from the claim text.