Pulp waste liquor-phenolic resin binder
US4324747A · kind A · utility
10Cited by
11References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1980 |
| Grant date | Apr 13, 1982 |
| Priority date | — |
| Expiry date | Apr 4, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L61/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Modified phenol-formaldehyde resins, and processes for their preparation, are described wherein board or paper pulping process waste liquor is used as the modifier. The resins may contain, based on solids contents of both resin and waste liquor, from 1:10 to 10:1 parts by weight. These resins are cheaper than conventional resins and also use the waste-liquor without any purification step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.