Use of surfactants having an HLB less than 10 in the deinking of dry toner electrostatic printed wastepaper
US5200034A · kind A · utility
20Cited by
14References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1991 |
| Grant date | Apr 6, 1993 |
| Priority date | — |
| Expiry date | Apr 25, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/64
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for deinking dry toner electrostatic printed wastepaper is disclosed. The method includes administering a sufficient amount of an ethoxylated surfactant, propoxylated surfactant, esterified surfactant or alkanolamide surfactant having an HLB value of less than 10.0 to a sample of electrostatic printed wastepaper for which treatment is desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.