Rosin emulsion sizing agent, paper sized therewith and method of sizing using the same
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United States of America Patent
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Feb 28, 1995
Grant Date -
N/A
app pub date -
Oct 15, 1992
filing date -
Oct 18, 1991
priority date (Note) -
Expired
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Abstract
This invention provides a rosin emulsion sizing agent for papermaking comprising a fortified or unfortified rosin-epoxy compound obtained by reacting a rosin and an epoxy compound, wherein the rosin-epoxy compound is dispersed in water with the aid of an emulsifying and dispersing agent, and paper sized therewith and a method of sizing using the same. The rosin emulsion sizing agent of the present invention exhibits an distinguished sizing effect in neutral papermaking systems even when calcium carbonate is contained therein and is excellent in mechanical and storage stabilities while causing little foaming in the papermaking system. In addition, the sizing agent presents no significant difficulties in its production.
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