发明名称 |
A METHOD OF MAKING CELLULOSE ESTER POLYMER AND PRE-TREATING CELLULOSE FOR THE MANUFACTURE OF CELLULOSE ESTER POLYMER. |
摘要 |
<p>A method of making cellulose ester polymer comprises the steps of : pre- treating a cellulose source; esterifying the pretreated cellulose source to form a cellulose ester; and optionally hydrolyzing the cellulose ester. The pretreatment step further comprises: mixing, in a first stage, the cellulose source with a first solution of a weak acid and water, whereby the cellulose source being suspended in the first solution; de-liquefying the first stage suspension; mixing, in a second stage, the de-liquefied mass with a second solution of weak acid and water, whereby the mass being suspended in the second solution; and de-liquefying the second stage suspension.</p> |
申请公布号 |
MX2009002983(A) |
申请公布日期 |
2009.04.01 |
申请号 |
MX20090002983 |
申请日期 |
2007.07.09 |
申请人 |
CELANESE ACETATE LLC |
发明人 |
WANG, LINFU;STOGNER, HENRY P.;KIZER, LAWTON E.;SAMZ, FREDERICK C.;TONEY II, CHARLES E. |
分类号 |
C08B3/00 |
主分类号 |
C08B3/00 |
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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