Sizing method and composition for use therein
US3957574A · kind A · utility
14Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 6, 1975 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | Jan 6, 1995 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/55
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In the production of sized paper and board using ketene dimer as sizing agent, there is used concomitantly with the ketene dimer a cationic polyelectrolyte so as to increase the sizing effect of the ketene dimer. The cationic polyelectrolyte is normally a dye fixative selected from water-soluble dicyandiamide-formaldehyde condensates. The cationic polyelectrolyte may be mixed with the ketene dimer so as to form a novel sizing composition which is preferably used in the form of an emulsion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.