Unsaturated polyesters colored with lignin
US4771101A · kind A · utility
10Cited by
4References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1987 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | Jun 22, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/52
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Colored unsaturated polyesters having copolymerized therein lignin and lignin derivatives which condense during polymerization into the polyester chain are disclosed. The lignin moieties are thermally stable at the polymer processing temperature and are nonextractable from the polymer making these colored polyesters suitable for use in bathroom fixtures, boats, certain automotive applications and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.