Method for increasing the reactivity of lignin
US10894855B2 · kind B2 · utility
1Cited by
13References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 19, 2019 |
| Grant date | Jan 19, 2021 |
| Priority date | — |
| Expiry date | Mar 13, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J197/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a method for increasing the reactivity of lignin, wherein the method comprises the following steps: a) forming, under heating at a temperature of 71-94° C., an aqueous dispersion comprising alkali and lignin, wherein the alkali comprises a hydroxide of an alkali metal; and b) heating the dispersion formed in step a) at a temperature of 50-95° C. for producing alkalated lignin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.