Weakly ionic aqueous suspensions of ground mineral matter and their uses
US7514488B2 · kind B2 · utility
9Cited by
3References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2007 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | Aug 28, 2027 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/69
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to the use of a weakly ionic and water-soluble copolymer as a grinding aid agent for grinding mineral matter in aqueous suspension in order to obtain aqueous suspensions of refined mineral matter, with a dry matter concentration that can be high, with a low Brookfield™ viscosity that remains stable over time, having the property that it presents a pigmentary surface area the ionic charge of which, as determined by ionic titration, is low.The invention relates to the aqueous suspensions of mineral matter obtained and their use in the fields of paper, paint and plastics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.