Pitch control using clay coated with an inorganic gel
US5221436A · kind A · utility
4Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1990 |
| Grant date | Jun 22, 1993 |
| Priority date | — |
| Expiry date | Nov 28, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S162/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is disclosed a process for controlling the deposition of pitch in a paper-making process, wherein there is incorporated into the paper-making composition a coated inorganic particulate material which comprises a clay mineral coated with (a) a cationic polyelectrolyte which is a water-soluble substituted polyolefin containing quaternary ammonium groups or with (b) an inorganic gel or with (c) a mixture of (a) and (b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.