Production of filled paper and compositions for use in this
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United States of America Patent
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May 26, 1998
Issued Date -
N/A
app pub date -
Feb 13, 1996
filing date -
Feb 4, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Filled paper is made by adding a cationising amount of cationic polymer to precipitated calcium carbonate or other filler either as a slurry or in a thick stock component, producing a thin stock containing the cationised filler and then treating the thin stock with a formaldehyde resin and polyethylene oxide as a retention system prior to drainage and drying.
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Cited Art Landscape
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