发明名称 |
ACETYLATION OF LIGNOCELLULOSIC MATERIALS |
摘要 |
ACETYLATION OF LIGNOCELLULOSIC MATERIALS This invention relates to a process for the acetylation of lignocellulosic materials (LM) by (a) bringing the LM into intimate contact with an acetylating agent comprising acetic anhydride at a temperature from 70-140.degree.C and (b) bringing the acetylated LM from step (a) into contact with a superheated chemical agent comprising acetic acid and/or anhydride at a temperature above 140.degree.C so as to reduce the acetic acid or acetic anhydride content of the acstylated LM to below 10% by weight. LM's treated in this manner have excellent dimensional stability.
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申请公布号 |
CA2133936(A1) |
申请公布日期 |
1995.04.29 |
申请号 |
CA19942133936 |
申请日期 |
1994.10.20 |
申请人 |
BP CHEMICALS LIMITED |
发明人 |
NELSON, HELEN L.;RICHARDS, DAVID I.;SIMONSON, RUNE |
分类号 |
B27K3/36;B27K5/00;C08B3/06;C08H8/00;(IPC1-7):C08H5/04 |
主分类号 |
B27K3/36 |
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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