Pigment compositions
US5271759A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 1992 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | May 1, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0063
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Pigment compositions comprising PA1 a) at least one organic pigment, PA1 b) 0.05 to 10% by weight, based on the organic pigment a), of at least one modified organic pigment of formula ##STR1## wherein A is the radical of an organic pigment, X is H, Na or K and m is an integer from 0.05 to 3, and PA1 c) 0.05 to 10% by weight, based on the organic pigment a), of at least one polymeric ammonium salt having an average molecular weight from 500 to 2 500 000 and which is soluble in water or a lower alkanol. These pigment compositions have excellent suitability for the wrap-free pigmenting of polyolefins and, when incorporated in paint systems and printing inks, exhibit excellent rheology.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.