Wastepaper reclaiming deinking agent
US5880077A · kind A · utility
2Cited by
2References
4Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 29, 1997 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Aug 29, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/64
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a deinking agent with which a high-quality pulp sheet having a low Eric number can be obtained. The deinking agent for wastepaper reclamation comprises (a) an alkylene oxide adduct of an ester prepared from a dimer acid and/or polymer acid obtained from an unsaturated fatty acid having a specific number of carbon atoms, and an alcohol having a specific number of carbon atoms at a specific molar ratio, and (b) a higher fatty acid and/or higher fatty acid soap having a specific number of carbon atoms, provided that the (a)/(b) weight ratio is 95/5 to 60/40.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.