Clay compositions and their use in paper making
US5223098A · kind A · utility
12Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1991 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | Nov 5, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/68
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Bentonite swelling clay is provided to a paper making mill as a fluid concentrate containing more than 15% bentonite wherein swelling of the bentonite is prevented by inorganic electrolyte in the concentrate, and the bentonite swells upon dilution either before addition of the cellulosic suspension or after addition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.