Methods for enhancing the preservation of cellulosic materials and cellulosic materials prepared thereby
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United States of America Patent
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Sep 27, 2022
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Jan 14, 2021
app pub date -
Sep 28, 2020
filing date -
Dec 23, 2015
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Abstract
Methods for treating cellulosic materials comprising introducing a liquid treating composition into the cellulosic material, the treating composition comprising a solution prepared from at least: (i) one or more of a copper amine complex or copper ammine complex, such as copper tetraamine carbonate, (ii) one or more of ammonia or a water-soluble amine and (iii) water; and exposing the cellulosic material provided thereby to carbon dioxide and/or carbonic acid to provide treated cellulosic material, and treated cellulosic materials prepared thereby.
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