Papermaking aid
US4643801A · kind A · utility
100Cited by
2References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1986 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Feb 24, 2006 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An improved binder for use in paper-making contains three ingredients, a cationic starch having a degree of substitution of at least 0.01, a high molecular weight anionic polymer having a molecular weight of at least 500,000 and a degree of anionic substitution of at least 0.01, and a dispersed silica having a particle size ranging from between about 1-50 nanometers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.