Newsprint papers
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United States of America Patent
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Dec 25, 2007
Grant Date -
Sep 16, 2004
app pub date -
Feb 19, 2004
filing date -
Feb 21, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The object of the present invention provides a newsprint paper having a friction coefficient in an appropriate range, a sufficient sizing quality, a low 'neppari' strength and excellent printability. A newsprint paper having a static friction coefficient in an appropriate range of 0.44-0.74, a sufficient sizing quality and a low 'neppari' strength can be obtained by applying a coating solution containing an alkenyl ketene dimer represented by general formula 1 below and a paper surface-modifying agent on a newsprint base paper, especially a neutralized newsprint base paper containing 1% by weight or more and 30% by weight or less of calcium carbonate as a filler and 50% by weight or more of deinked pulp. ##STR00001## wherein R.sub.1 and R.sub.2 represent an unsaturated hydrocarbon group containing 8-30 carbon atoms.
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