发明名称 |
METHOD FOR FORMING CELLULOSE |
摘要 |
<p>A method for forming II-type cellulose, which comprises introducing together a slurry having water and a I-type cellulose dispersed therein and water in the state of high temperature and high pressure to a tubular reactor (28), contacting the I-type cellulose with a hot water in a supercritical state or subcritical state for a predetermined time in the tubular reactor (28), to thereby decompose a part of the hydrogen bonds in the I-type cellulose and dissolve the I-type cellulose into the water in a supercritical state or subcritical state, cooling a cellulose solution discharged from the tubular reactor (28) in a cooler (30) to room temperature or lower, followed by allowing to stand, to thereby precipitate crystals of II-type cellulose having a molecular weight lower than that of the I-type cellulose, and separating the resultant II-type cellulose from a solvent. The method allows the preparation of pure II-type cellulose by the use of a simple process.</p> |
申请公布号 |
WO0204524(A1) |
申请公布日期 |
2002.01.17 |
申请号 |
WO2001JP05996 |
申请日期 |
2001.07.11 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA;GENESIS RESEARCH INSTITUTE, INC.;ARAI, KUNIO;AJIRI, TADAFUMI;HATTORI, HIDEO;SASAKI, MITSURU |
发明人 |
ARAI, KUNIO;AJIRI, TADAFUMI;HATTORI, HIDEO;SASAKI, MITSURU |
分类号 |
C08B15/02;C08B15/08;(IPC1-7):C08B1/00 |
主分类号 |
C08B15/02 |
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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