Compatibility agent for aqueous polypigmentary suspensions containing hydrated calcium sulfate
US5109090A · kind A · utility
7Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1989 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | Oct 10, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01F11/46
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Copolymers having the general formula: ##STR1## are useful as compatibility, dispersion and grinding agents for aqueous pigmentary suspensions formulated from a mixture of mineral pigments, at least one of which is hydrated calcium sulfate. These suspensions are useful in papermaking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.