发明名称 |
PREPARATION OF WOOD PULPS WITH CAUSTIC PRETREATMENT FOR USE IN THE MANUFACTURE OF CELLULOSE ACETATES AND OTHER ORGANIC ESTERS. |
摘要 |
<p>A process for making cellulose acetate or cellulose esters which pretreats a wood pulp prior to acetylation or esterification is disclosed. The pretreatment of the wood pulp includes the mixture of wood pulp into a caustic solution to form a suspension of wood pulp. The suspension of wood pulp is separated from the caustic solution to form a cake. The cake is washed with an acid to obtain an acid and cellulose cake having a low water content. The acid and cellulose cake is then acetylated or esterifed to form cellulose acetate or other cellulose esters.</p> |
申请公布号 |
MX2007016195(A) |
申请公布日期 |
2008.03.11 |
申请号 |
MX20070016195 |
申请日期 |
2006.06.06 |
申请人 |
CELANESE ACETATE LLC |
发明人 |
WANG, LINFU;STOGNER, HENRY P.;TONEY, CHARLES;KIZER, CHUCK;BATSON, BILL |
分类号 |
C08B3/00;C08B3/06 |
主分类号 |
C08B3/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|