Aqueous papercoating compositions comprising a substantially H.sub.2 O-insoluble, alkali-soluble latex
US5563201A · kind A · utility
17Cited by
3References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 18, 1994 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Aug 18, 2014 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H19/58
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Rheologically/water retentivity improved aqueous papercoating compositions comprise immixture, in water, of (i) a water-insoluble, non-alkali-swellable latex A of a film-forming polymer having a mean particle size .phi..sub.A ranging from 60 to 300 nm, (ii) a water-insoluble, alkali-swellable latex B of a polymer having a mean particle size .phi..sub.B ranging from 20 to 150 nm measured at a pH of from 2 to 4 and swelling at least 1.5 times in diameter in an alkaline medium, and (iii) an inorganic pigment C which comprises at least 40% by weight of CaCO.sub.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.