Aqueous colorant dispersions and inkjet compositions
AssigneeEastman Kodak Company
InventorsCharles Leo Bauer, Tamara K. Jones, Grace Ann Bennett
Life of this patent
Estimating the term…
Abstract
An aqueous dispersion contains pigment colorant particles (of various types of materials) at 5 weight % and up to and including 80 weight %; a dispersing polymer that is prepared from the Diels Alder adduct of 3-maleimidopropionic acid and furfuryl (meth)acrylate; and an aqueous medium. The weight ratio of the pigment colorant particles to the dispersing polymer is from 19:1 to and including 2:1. This aqueous dispersion can be incorporated into an aqueous inkjet ink composition that can be used in various inkjet printing methods to provide opaque images particularly when titanium dioxide particles are used as the pigment colorant.
Claims12
An aqueous dispersion comprising:
- pigment colorant particles that are present in an amount of at least 5 weight % and up to and including 80 weight %;
- a dispersing polymer that is prepared from the Diels Alder adduct of 3-maleimidopropionic acid and furfuryl (meth)acrylate;
- and
- an aqueous medium,
- wherein the weight ratio of the pigment colorant particles to the dispersing polymer is from 19:1 to and including 2:1.
An aqueous inkjet ink composition, comprising:
- pigment colorant particles that are present in an amount of at least 4 weight % and up to and including 15 weight %;
- a dispersing polymer that is prepared from the Diels Alder adduct of 3-maleimidopropionic acid and furfuryl (meth)acrylate;
- a humectant having a molecular weight of less than 1,000;
- and
- an aqueous medium,
- wherein the weight ratio of the pigment colorant particles to the dispersing polymer is from 19:1 to and including 2:1.
Dependencies are inferred from the claim text.