![PROCESS FOR IMPROVED PRODUCTION OF ALKALI CELLULOSE AND CELLULOSE DERIVATIVES](/ep/2012/01/11/EP2403881A1/abs.jpg.150x150.jpg)
基本信息:
- 专利标题: PROCESS FOR IMPROVED PRODUCTION OF ALKALI CELLULOSE AND CELLULOSE DERIVATIVES
- 专利标题(中):VERFAHREN ZUR VERBESSERTEN HELLTELLUNG VON ALKELLICULOSE UND CELLULOSEDERIVATEN
- 申请号:EP10701267.6 申请日:2010-01-08
- 公开(公告)号:EP2403881A1 公开(公告)日:2012-01-11
- 发明人: SPREHE, Matthias , HOELZER, Bettina
- 申请人: Dow Global Technologies LLC
- 申请人地址: 2040 Dow Center Midland, MI 48674 US
- 专利权人: Dow Global Technologies LLC
- 当前专利权人: Dow Global Technologies LLC
- 当前专利权人地址: 2040 Dow Center Midland, MI 48674 US
- 代理机构: Polypatent
- 优先权: US157685P 20090305
- 国际公布: WO2010101667 20100910
- 主分类号: C08B1/10
- IPC分类号: C08B1/10 ; C08B11/193 ; B01F7/00
摘要:
The present invention relates to a process for the production of alkali cellulose for the production of alkali cellulose and, optionally, cellulose ethers from cellulose in the presence of alkali and, if applicable, with alkylating and/or hydroxyalkylating agent(s) comprising the reaction of a cellulose with an alkali metal hydroxide, wherein the alkali metal hydroxide is mixed with cellulose in a mixing apparatus, the mixing apparatus (1) having an upper region (20, 102a, 202a) with a first cross-section and a lower region (21, 102b, 202b) with a second cross-section, the second cross-section being the same as or smaller than the first cross-section and comprising at least one non-horizontally oriented mixing device (23, 27, 121, 221, 224).
摘要(中):
本发明涉及一种生产碱纤维素的方法,用于生产碱纤维素和任选的纤维素醚,所述纤维素由纤维素在碱的存在下和如果适用的情况下与含有反应的烷基化和/或羟烷基化剂 具有碱金属氢氧化物的纤维素,其中所述碱金属氢氧化物与混合装置中的纤维素混合,所述混合装置(1)具有具有第一横截面的上部区域(20,102a,202a)和下部区域 (21,102b,202b),其具有第二横截面,所述第二横截面与所述第一横截面相同或小于所述第一横截面,并且包括至少一个非水平取向的混合装置(23,27,121,221 ,224)。
公开/授权文献:
IPC结构图谱:
C | 化学;冶金 |
--C08 | 有机高分子化合物;其制备或化学加工;以其为基料的组合物 |
----C08B | 多糖类;其衍生物 |
------C08B1/00 | 纤维素的预处理以制造它的衍生物 |
--------C08B1/08 | .碱纤维素 |
----------C08B1/10 | ..制造碱纤维素的设备 |