Method for making paper using microparticles
US6193844A · kind A · utility
71Cited by
60References
5Claims
0Family size
Inventors
Key dates
| Filing date | Sep 14, 1999 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Sep 14, 2019 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/765
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A microparticle composition for paper making includes finely divided particles of a water insoluble solid such as amorphous sodium aluminosilicate, and having an anionic charge of at least 20 millivolts, and preferably from about 40 to 60 millivolts, and a particle size of less than about 0.1 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.