Method of sizing and aqueous sizing dispersion
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United States of America Patent
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Apr 23, 1996
Grant Date -
N/A
app pub date -
Jul 20, 1994
filing date -
Jul 20, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method of sizing paper and similar cellulose products containing precipitated calcium carbonate as a filler. According to the method, an aqueous suspension of pulp is dewatered and dried in the presence of an aqueous dispersion of a rosin-based sizing agent, which comprises a rosin component and a rosin ester component, and an aqueous dispersion of a cellulose-reactive sizing agent. The invention also relates to an aqueous dispersion of sizing agents which comprises a rosin-based sizing agent, which contains a rosin component and a rosin ester component, and a cellulose-reactive sizing agent.
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