Compositions and methods for enhancing brightness and brightness stabilization in papermaking
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United States of America Patent
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Oct 12, 2006
app pub date -
Apr 8, 2005
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Apr 8, 2005
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Abstract
A Penetrant compound that preserves and enhances the brightness of a ligno-cellulosic material comprising (i) a reductive nucleophilic agent and (ii) a chelant in a paper or tissue machine. This Penetrant compound preserves and enhances the brightness of a ligno-cellulosic material when applied during different stages of the papermaking process. Penetrant compound maintains and/or enhances brightness, prevent yellowing, and enhances the performance of optical brighteners of pulp or a paper sheet produced by methods wherein the penetrant compound is applied in the papermaking process.
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