Deresination method of wood pulp
US4673460A · kind A · utility
15Cited by
11References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 27, 1984 |
| Grant date | Jun 16, 1987 |
| Priority date | — |
| Expiry date | Sep 27, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S162/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An improved method for deresination of wood chips or pulp is provided. The method comprises contacting the chips or pulp with an ethoxylated alkyl phenol deresinating composition during processing to reduce the level of natural resins present therein. The improvement comprises substituting a sufonated fatty acid for part of the ethoxylated alkyl phenol while maintaining substantially the same level of deresination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.