Fixative composition, thick stock composition and process for fixating hydrophobic and/or anionic substances on fibres
US8936698B2 · kind B2 · utility
2Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2012 |
| Grant date | Jan 20, 2015 |
| Priority date | — |
| Expiry date | Jun 29, 2032 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/45
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a fixative composition and process for reducing hydrophobic and/or anionic substances in fiber-containing stock for making of paper, board or the like. The composition comprises a synthetic cationic polymer, which has a charge density of 3.0-24 meq/g, and a cationic non-degraded starch, which has charge density of 0.5-3.0 meq/g. The invention relates also to thick stock composition comprising fibers and a fixative composition according to the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.