Polyvinyl alcohol resin soluble in high solids aqueous paper coating compositions without exernal heating
US5057570A · kind A · utility
24Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1990 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | Jun 13, 2010 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H19/60
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for preparing a high solids, aqueous paper coating composition which comprises adding dry particulate solids of a partially hydrolyzed, low molecular weight polyvinyl alcohol to a high solids, aqueous paper coating composition and mixing without external heating until dissolved, preferably by mixing the polyvinyl alcohol solids into the aqueous pigment dispersion followed by the addition of binders and other additives to make the paper coating composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.