Back to results
US 7,189,767 B2Granted
Colorants, dispersants, dispersions, and inks
AssigneeRohm and Haas Company
InventorsRobert Howard Gore, Eric Jon Langenmayr, Warren Harvey Machleder, Dennis Paul Lorah, Antony Keith Van Dyk, Newman Mayer Bortnick
Life of this patent
Estimating the term…
Abstract
Colorant, dispersants, dispersions, and inks are provided which include crosslinked polymeric nanoparticles (hereafter “PNPs”) having a mean diameter in the range of from 1 to 50 nanometers, the PNPs including as polymerized units at least one multi-ethylenically-unsaturated monomer. Also provided are methods for preparing colorants, dispersants, dispersions, and inks which include PNPs.
Claims1
An ink comprising the dispersion, which comprises:
- particles having colorants and crosslinked polymeric nanoparticles (“PNPs”) dispersed in a liquid medium, wherein said PNPs have a mean diameter in the range of from 1 to 15 nanometer, said PNPs comprising as polymerized units at least one multi-ethylenically-unsaturated monomer,
- wherein the colorants comprise at least one chromophore attached to at least a portion of the PNPs.
Dependencies are inferred from the claim text.