IMPROVED FLAME RETARDANCY OF WOOD AND OTHER CELLULOSE-BASED MATERIALS BY IN-SITU MINERALIZATION
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United States of America Patent
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Jun 24, 2021
app pub date -
Oct 18, 2018
filing date -
Oct 18, 2018
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Abstract
The invention relates to a method for the treatment of cellulosic material. The method is comprising the steps of impregnation of the cellulosic material and treatment of the impregnated cellulosic material by a fumigation step or an evaporation step. Impregnation is performed with a metal ion M and at least one ion precursor Z yielding an impregnated cellulosic material. The at least one ion precursor Z provides an anion A or an anion A and a cation Y comprised within at least one metal salt solution I or with a metal salt solution II comprising a metal ion M. The fumigation or evaporation step is yielding a cellulosic composite material comprising a compound M(NH4)A, MYA or M(OH)x, wherein M is a metal.
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