Water-based printing ink compositions containing a lignin acetate binder
US4612051A · kind A · utility
27Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1985 |
| Grant date | Sep 16, 1986 |
| Priority date | — |
| Expiry date | Jul 18, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An improved water-based printing ink composition comprising, in aqueous medium, a colorant selected from the group consisting of a dispersed dye, a pigment, and mixtures thereof; and a water-insoluble non-sulfonated lignin acetate binder for the colorant. Also disclosed is a method of producing the improved water-based printing ink composition by reductively acetylating a non-sulfonated lignin to form a lignin acetate, drying the lignin acetate, and combining the dried lignin acetate in aqueous medium with a printing ink colorant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.