Water-based pigment dispersion
US5476544A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1995 |
| Grant date | Dec 19, 1995 |
| Priority date | — |
| Expiry date | Jan 6, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D17/001
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A water-based pigment dispersion excellent in gloss of a coating, tinting strength, fluidity and storage stability, comprising a pigment, a pigment dispersing agent of the formula (1) and a solid content, of a water-based resin which is obtained by copolymerizing an .alpha., .beta.-ethylenically unsaturated carboxylic acid (a), an .alpha., .beta.-ethylenically unsaturated, nitrogen-containing monomer (b) and other .alpha., .beta.-ethylenically unsaturated monomer (c), EQU P--[X--Y--Z--N(R.sup.1)R.sup.2 ].sub.n ( 1) wherein: P is an organic dyestuff residue or a heterocyclic ring residue, X is a divalent binding group consisting of 2 to 15 atoms selected from S, C, N, O and H atoms, Y is a direct bond, --N(R)-- in which R is H, an alkyl group having 1 to 18 carbon atoms or Q--N(R.sup.3)R.sup.4 in which Q is an alkylene group having 1 to 6 carbon atoms and each of R.sup.3 and R.sup.4 is independently an optionally substituted alkyl group having 1 to 18 carbon atoms or R.sup.3 and R.sup.4 are together forming an optionally substituted heterocyclic ring which may contain N, O or S, or --O--, Z is an alkylene group having 1 to 6 carbon atoms, and each of R.sup.1 and R.sup.2 is independe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.