发明名称 |
Acetylation of lignocellulosic materials |
摘要 |
Reaction of lignocellulosic material with uncatalyzed acetic anhydride in the absence of any cosolvent is disclosed. The process improves dimensional stability and resistance to biological attack of the lignocellulosic material. Lignocellulosic material is treated by exposure to liquid acetic anhydride for at least a short period of time, after which it is then heated to acetylate the material. The excess anhydride and byproduct acetic acid can be removed by vacuum.
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申请公布号 |
US4804384(A) |
申请公布日期 |
1989.02.14 |
申请号 |
US19870036050 |
申请日期 |
1987.04.08 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF AGRICULTURE |
发明人 |
ROWELL, ROGER M.;SIMONSON, RUNE;TILLMAN, ANNE-MARIE |
分类号 |
C08B3/06;B27K3/36;B27K5/00;D21C9/00;(IPC1-7):D06M1/14;D06M13/20;B05D1/18;B05D7/00 |
主分类号 |
C08B3/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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