Manufacture of novolacs and resoles using lignin
US10808068B2 · kind B2 · utility
1Cited by
22References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2018 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Mar 11, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08H8/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Processes for manufacturing novolacs and resoles from lignin are disclosed. A phenol-aldehyde-lignin dispersion is formed which can then be used to make either a novolac or a resole, depending upon the catalysts used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.