Aqueous newsprint inks
US4310356A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 22, 1980 |
| Grant date | Jan 12, 1982 |
| Priority date | — |
| Expiry date | Sep 22, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In an improved process for printing newsprint paper with a light-weight keyless printing press system the mineral oil ink standardly used is replaced by an aqueous newsprint ink having a total solids content of about 13-80% and containing about 2-30% of a colorant consisting of a pigment and/or dye, about 3-60% of a dispersed starch, and water to total 100%, wherein the percentages are by weight based on total weight of the ink. The ink may optionally contain a viscosity stabilizer if necessary to prevent retrogradation of the starch or a thickener. In a preferred embodiment the pigment is carbon black and the starch is a dextrin or waxy fluidity starch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.