Method of increasing drainage in papermaking using colloidal borosilicates
US6361652B1 · kind B1 · utility
18Cited by
34References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2001 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Apr 22, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/68
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculant and/or starch, with or without the addition of a cationic coagulant. The borosilicate material is preferably a colloidal borosilicate. Methods for the preparation of the borosilicate material are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.