Flame-retardant treatment of lignocellulosic materials, resulting flame-retarded lignocellulosic materials and uses thereof
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United States of America Patent
Stats
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Apr 23, 2024
Grant Date -
Jun 15, 2023
app pub date -
Apr 8, 2021
filing date -
Apr 9, 2020
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A flame retardant treatment of a lignocellulosic material, which includes: optionally steam exploding the lignocellulosic material, impregnating the optionally steam-exploded lignocellulosic material, in or with an aqueous solution, from 0.5% to 10% of phytic acid and from 1% to 30% of urea, based on the total weight of the aqueous solution, optionally drying of the impregnated lignocellulosic material, until the impregnated lignocellulosic material has a moisture content from 5% to 20% by weight, cooking the impregnated and optionally dried lignocellulosic material, the resulting flame-retarded lignocellulosic material including a phosphorous content originating from the phytic acid from 0.1% to 10% by weight. Also, the resulting flame-retarded lignocellulosic material and the use thereof for manufacturing flame-retarded composite materials based on plant fibres, woven or nonwoven flame-retarded flexible materials based on plant fibres, and particularly textiles, flame-retarded materials based on wood fibres and/or on wood particles, and particularly flame-retarded wood panels.
First Claim
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International Classification(s)
- 2021 Application Filing Year
- B27K Class
- 39 Applications Filed
- 11 Patents Issued To-Date
- 28.21 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B27K Class
- 0 % this patent is cited more than
- 1 Age
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| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Oct 23, 2027 |
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