Resin for ink and ink
US10781281B2 · kind B2 · utility
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2Claims
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Key dates
| Filing date | Jan 10, 2019 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Jan 10, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D161/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for producing a resin for ink which includes reacting a lignin, a phenol, and an aldehyde so as to obtain a lignin-containing resol phenolic resin; and reacting the obtained lignin-containing resol phenolic resin with a rosin-based resin, and polyhydric alcohol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.