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6634970 
Journal Article 
The coating thickness effect on the migration extent of hydrophilic hinders in paper coatings 
Stanislawska, A; , 
2003 
1 
Przemysł Chemiczny
ISSN: 0033-2496 
WYDAWNICTWO SIGMA-N O T SP Z O O 
WARSAW 
1174-1176 
WOS:000220115300056 
Aq. 70% (by weight) precipitated CaCO3 dispersion containing 0.3 pph BASF's Polysalz S dispersant, a butadiene-styrene latex (BSL), and an aq. 10% poly(vinyl alcohol) (PVA), was diluted with H2O to yield aq. 30% (by volume) mixtures M1(and M2): CaCO3 + 5 pph BSL + 4 (or 2) pph PVA. Paper wet-coated 24 (P3), 50 (P5) or 100 (P8) mum thick with Mayer's bar No. 3, 5, or 8, IR-dried, calendered (3.14 MPa), and stored at 65 +/- 2% r.h., yielded M1 and M2 coatings 7.8-47.8 and 4.2-42.0 mum thick. Coatings P8 resisted most to penetration of H2O and showed the highest dry pick resistance. Migration of hydrophilic binders through a wet consolidating coatings, which controls paper printing properties, was most effective in the thickest coat and the distribution of the binders in the dry coatings was uniform.