Process for cooking lignocellulosic materials intended for the production of paper pulp with 1,2,3,4-tetrahydro-9,10-anthracenediol
US4451333A · kind A · utility
1Cited by
3References
4Claims
0Family size
Assignee
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Key dates
| Filing date | May 14, 1982 |
| Grant date | May 29, 1984 |
| Priority date | — |
| Expiry date | May 14, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Process for cooking lignocellulosic materials by heating the said materials in a cooking solution containing caustic soda with or without an alkali metal sulphide, in which the solution used contains about 0.01% to 10%, preferably 0.05% to 2%, by weight of 1,2,3,4-tetrahydro-9,10-anthracenediol based on the weight of the dry lignocellulosic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.