Pigment for a coating composition for printing paper
US5478388A · kind A · utility
15Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1994 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Apr 28, 2014 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/52
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is disclosed a paper coating pigment comprising: PA1 (a) from 10% to 100% by weight of a first paper coating pigment having a particle size distribution such that at least 75% by weight of the particles have an equivalent spherical diameter smaller than 2 .mu.m and at least 60% by weight have an equivalent spherical diameter smaller than 1 .mu.m, the average particle aspect ratio of the size fraction having an equivalent spherical diameter predominantly smaller than 1 .mu.m being 25 or greater; and PA1 (b) up to 90% by weight of a second paper coating pigment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.