Process for deinking wastepaper utilizing organoclays formed in situ
US5336372A · kind A · utility
18Cited by
10References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1992 |
| Grant date | Aug 9, 1994 |
| Priority date | — |
| Expiry date | Sep 14, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/64
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for deinking wastepaper, which comprises: (a) forming an organoclay deinking agent in an aqueous system; (b) contacting ink from wastepaper in the aqueous system with an amount of the organoclay deinking agent effective to deink the wastepaper; and ( c ) recovering deinked paper pulp from the aqueous system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.