White inkjet ink composition having improved resin compatibility
US12071553B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2021 |
| Grant date | Aug 27, 2024 |
| Priority date | — |
| Expiry date | Sep 27, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/003
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention relates to a white inkjet ink composition having improved compatibility of functional polymer-stabilized titanium dioxide with binder resins, resulting in significantly slowing down the sedimentation rate, resisting clogging nozzles upon jetting, and enhancing the lightness of the ink coating. The white inkjet ink composition comprises a white colorant; one or more binder resins; one or more compatibilizers; an ink solvent; and optionally one or more additives. The white colorant is modified with a functional copolymer comprising an acid group, such as such as styrene-maleic anhydride, to form a modified white colorant. The presence of the one or more compatibilizers significantly improve the compatibility of the modified white colorant, such as styrene-maleic anhydride stabilized titanium dioxide, with the one or more binder resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.