Azo pigment-containing aqueous ink for inkjet recording
US8399545B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2009 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | Nov 17, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/326
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An aqueous ink for inkjet recording is provided. The aqueous ink ensures that the ejection accuracy in inkjet recording is excellent and helps suppress generation of density unevenness and streak unevenness, even after storage for a long period of time or exposure to high temperatures. The aqueous ink for inkjet recording contains vinyl polymer particles containing components A and B and a water-soluble solvent. Component A is an azo pigment having a specific structure, its tautomer, or a salt or hydrate thereof; and Component B is a vinyl polymer containing (a) a hydrophobic structural unit having an aromatic ring bonded to the polymer main chain through a linking group and (b) a hydrophilic structural unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.