Polymeric emulsions for ink jet inks
OwnerEric Johnson, Chao-Jen Chunginventors
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Abstract
This invention concerns polymeric emulsion binders which are suitable for use in ink jet inks. More specifically, this invention relates to ink jet inks comprised of polymeric binder emulsions comprising low levels of water soluble material, and ink jet inks comprising a polymeric binder emulsion with a low level of water soluble materials.
Claims11
An inkjet ink comprising a colorant, a liquid medium, and a polymeric binder emulsion, said polymer comprising as polymerized units one or more hydrophilic monomers, and said polymeric binder emulsion having a serum fraction of hydrophilic monomer derived units of no more than 25 weight percent.
A method of preparing an inkjet ink comprising:
- (a) preparing a polymeric binder emulsion having a polymer, said polymer comprising as polymerized units one or more hydrophilic monomers,
- (b) subjecting said polymeric binder emulsion to a fine filtration technique to reduce the serum fraction of hydrophilic monomer derived units, and
- (c) formulating said inkjet ink by combining the fine filtered polymeric binder emulsion with a colorant and a liquid medium.
Dependencies are inferred from the claim text.