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1. 发明授权

US08017766B2 Methods for preparing alkali cellulose and cellulose ether 有权
标题翻译：制备碱纤维素和纤维素醚的方法
公开(公告)号：US08017766B2
公开(公告)日：2011-09-13
申请号：US11448969
申请日：2006-06-07
申请人： Mitsuo Narita , Atsushi Hatayama , Hiroshi Umezawa
发明人： Mitsuo Narita , Atsushi Hatayama , Hiroshi Umezawa
IPC分类号： C08B15/05 , C08B11/00
CPC分类号： C08B1/08 , C08B11/00 , C08B11/02 , C08B11/08 , C08B11/193
摘要： Provided is a method for preparing alkali cellulose having alkali distributed uniformly therein. A uniform alkali distribution in the alkali cellulose makes it possible to prepare cellulose ether which has been substituted uniformly in an etherification reaction step. The resulting cellulose ether does not contain a floating water-insoluble portion which will otherwise appear owing to insufficient substitution. More specifically, provided are a method for preparing alkali cellulose, comprising simultaneously feeding pulp powder and an aqueous alkali solution to a high speed disperser to continuously bring them into contact with each other and a method for preparing cellulose ether, comprising reacting the resulting alkali cellulose with an etherifying agent.
摘要翻译：提供一种制备碱性分布均匀的碱纤维素的方法。碱性纤维素中的均匀的碱分布使得可以制备在醚化反应步骤中均匀取代的纤维素醚。得到的纤维素醚不含浮选水不溶部分，否则由于不充分的取代而出现。更具体地说，提供了一种制备碱纤维素的方法，其包括同时向高速分散器中供给纸浆粉末和碱水溶液以使它们彼此接触，以及制备纤维素醚的方法，包括使所得的碱性纤维素与醚化剂。

2. 发明申请

US20060287518A1 Methods for preparing alkali cellulose and cellulose ether 有权
标题翻译：制备碱纤维素和纤维素醚的方法
公开(公告)号：US20060287518A1
公开(公告)日：2006-12-21
申请号：US11448969
申请日：2006-06-07
申请人： Mitsuo Narita , Atsushi Hatayama , Hiroshi Umezawa
发明人： Mitsuo Narita , Atsushi Hatayama , Hiroshi Umezawa
IPC分类号： C08B15/05 , C08B11/00
CPC分类号： C08B1/08 , C08B11/00 , C08B11/02 , C08B11/08 , C08B11/193
摘要： Provided is a method for preparing alkali cellulose having alkali distributed uniformly therein. A uniform alkali distribution in the alkali cellulose makes it possible to prepare cellulose ether which has been substituted uniformly in an etherification reaction step. The resulting cellulose ether does not contain a floating water-insoluble portion which will otherwise appear owing to insufficient substitution. More specifically, provided are a method for preparing alkali cellulose, comprising simultaneously feeding pulp powder and an aqueous alkali solution to a high speed disperser to continuously bring them into contact with each other and a method for preparing cellulose ether, comprising reacting the resulting alkali cellulose with an etherifying agent.
摘要翻译：提供一种制备碱性分布均匀的碱纤维素的方法。碱性纤维素中的均匀的碱分布使得可以制备在醚化反应步骤中均匀取代的纤维素醚。得到的纤维素醚不含浮选水不溶部分，否则由于不充分的取代而出现。更具体地说，提供了一种制备碱纤维素的方法，其包括同时向高速分散器中供给纸浆粉末和碱水溶液以使它们彼此接触，以及制备纤维素醚的方法，包括使所得的碱性纤维素与醚化剂。

3. 发明授权

US06884883B1 Method for reducing pulp to powder and process for the production of a cellulose ether 有权
标题翻译：减少纸浆粉末的方法和生产纤维素醚的方法
公开(公告)号：US06884883B1
公开(公告)日：2005-04-26
申请号：US09605815
申请日：2000-06-28
申请人： Yukio Shima , Mitsuo Narita , Atsushi Hatayama
发明人： Yukio Shima , Mitsuo Narita , Atsushi Hatayama
IPC分类号： C08B11/00 , B02C15/04 , B02C19/00 , B07B7/08 , C08B1/06 , C08B37/00 , C07H1/00 , C08B3/22
CPC分类号： C08B1/06
摘要： Pulp is ground by means of a vertical roller mill. The average particle diameter of the resulting powdered pulp is adjusted to 20-300 μm. The powdered pulp thus obtained is used as a starting material for the production of cellulose ethers.
摘要翻译：纸浆通过立式辊磨机研磨。将所得粉末纸浆的平均粒径调节至20-300μm。将由此获得的粉末纸浆用作生产纤维素醚的起始材料。

4. 发明授权

US09617350B2 Methods for preparing alkali cellulose and cellulose ether 有权
公开(公告)号：US09617350B2
公开(公告)日：2017-04-11
申请号：US11614587
申请日：2006-12-21
申请人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
发明人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
IPC分类号： C07H1/00 , C08B11/00 , C08B1/08 , C08B1/10 , C08B11/16 , C08B11/193
CPC分类号： C08B1/08 , C08B1/10 , C08B11/00 , C08B11/16 , C08B11/193
摘要： The invention is a method for efficiently preparing alkali cellulose having a uniform alkali distribution therein. More specifically, the invention is a method for preparing alkali cellulose comprising steps of bringing pulp into continuous contact with an alkali metal hydroxide solution in a bucket conveyor type contactor to generate a contact mixture, and draining the contact mixture; a method for preparing a cellulose ether comprising use of the alkali cellulose thus prepared; and an apparatus for preparing alkali cellulose comprising a bucket conveyor contactor comprising at least one inlet port for introducing pulp and an alkali metal hydroxide solution at one end and at least one outlet port for discharging a contact mixture wherein the pulp and the alkali metal hydroxide solution can be moved from one end to the other end while bringing them into contact with each other to generate the contact mixture; and a drainer for separating a cake from the contact mixture discharged from the outlet port.

5. 发明授权

US09534061B2 Methods for preparing alkali cellulose and cellulose ether 有权
标题翻译：制备碱纤维素和纤维素醚的方法
公开(公告)号：US09534061B2
公开(公告)日：2017-01-03
申请号：US11615437
申请日：2006-12-22
申请人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
发明人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
IPC分类号： C08B1/08 , C08B1/10 , C08B11/00 , C08B11/193
CPC分类号： C08B1/08 , C08B1/10 , C08B11/193
摘要： The invention is an efficient method for preparing alkali cellulose having the low water content and a uniform alkali distribution therein. More specifically, the invention is a method for continuously preparing alkali cellulose comprising steps of bringing pulp into continuous contact with an alkali metal hydroxide solution to generate a contact mixture and then draining the contact mixture by a centrifugal separator. The invention also includes a method for preparing cellulose ether comprising a step of etherifying the alkali cellulose.
摘要翻译：本发明是制备具有低含水率和均匀的碱分布的碱纤维素的有效方法。更具体地说，本发明是一种连续制备碱纤维素的方法，包括使纸浆与碱金属氢氧化物溶液连续接触以产生接触混合物，然后通过离心分离器排出接触混合物的步骤。本发明还包括一种制备纤维素醚的方法，其包括使碱性纤维素醚化的步骤。

6. 发明授权

US08853388B2 Methods for preparing alkali cellulose and cellulose ether 有权
标题翻译：制备碱纤维素和纤维素醚的方法
公开(公告)号：US08853388B2
公开(公告)日：2014-10-07
申请号：US11615355
申请日：2006-12-22
申请人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
发明人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
IPC分类号： C08B11/00 , C07H1/00 , C08B1/08 , C08B11/193 , C08B1/10
CPC分类号： C08B1/08 , C08B1/10 , C08B11/00 , C08B11/193
摘要： The invention is a method for efficiently preparing alkali cellulose having a uniform alkali distribution therein. More specifically, the invention is a method for preparing alkali cellulose comprising steps of bringing pulp into continuous contact with an alkali metal hydroxide solution in a pipe type contactor to generate a contact mixture and draining the contact mixture; a method for preparing cellulose ether comprising use of the alkali cellulose; and an apparatus for preparing alkali cellulose, comprising a pipe type contactor having at least one inlet port at one end thereof for introducing pulp and an alkali metal hydroxide solution, and an outlet port at the other end for discharging a contact mixture, wherein the pulp and the alkali metal hydroxide solution are moved from one end to the other end while bringing them into contact with each other, and a drainer for separating a cake from the contact mixture discharged from the contactor.
摘要翻译：本发明是一种有效制备碱分布均匀的碱纤维素的方法。更具体地，本发明是一种制备碱纤维素的方法，包括使纸浆与管式接触器中的碱金属氢氧化物溶液连续接触以产生接触混合物并排出接触混合物的步骤; 一种制备纤维素醚的方法，包括使用碱纤维素; 以及一种用于制备碱纤维素的设备，包括管式接触器，其在其一端具有用于引入纸浆和碱金属氢氧化物溶液的至少一个入口端口和另一端的出口，用于排出接触混合物，其中纸浆并且碱金属氢氧化物溶液在使它们彼此接触的同时从一端移动到另一端，以及用于从接触器排出的接触混合物中分离滤饼的排水器。

7. 发明申请

US20070144692A1 METHODS FOR PREPARING ALKALI CELLULOSE AND CELLULOSE ETHER 有权
标题翻译：制备碱性纤维素和纤维素醚的方法
公开(公告)号：US20070144692A1
公开(公告)日：2007-06-28
申请号：US11614717
申请日：2006-12-21
申请人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
发明人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
IPC分类号： D21C9/00 , C08B11/00 , D21C3/02
CPC分类号： C08B1/08 , C08B1/10 , C08B11/00 , C08B11/193
摘要： The invention is a method for efficiently preparing alkali cellulose having a uniform alkali distribution therein. More specifically, the invention is a method for preparing alkali cellulose comprising steps of bringing pulp into continuous contact with an alkali metal hydroxide solution in a rotary feeder type contactor to generate a contact mixture, and draining the contact mixture; and a method for preparing cellulose ether comprising use of the alkali cellulose thus prepared; an apparatus for preparing alkali cellulose, comprising a rotary feeder comprising a cyclic housing comprising an inlet port and an outlet port, a cyclic contact drum being circularly rotatable along the housing in the housing and comprising a plurality of filter cells arranged in a circumferential direction, and a filtrate-discharging tube being disposed in a diameter direction inside of the cyclic contact drum and collecting the filtrate which has passed the filter, and a drainer for draining a cake discharged from the contactor.
摘要翻译：本发明是一种有效制备碱分布均匀的碱纤维素的方法。更具体地说，本发明是一种制备碱纤维素的方法，包括使纸浆与旋转给料器型接触器中的碱金属氢氧化物溶液连续接触以产生接触混合物并排出接触混合物的步骤; 以及制备纤维素醚的方法，其包括使用如此制备的碱纤维素; 一种制备碱纤维素的设备，包括一种旋转进料器，包括一个包括入口和出口的循环壳体，循环接触鼓沿壳体沿圆周方向可旋转，并且包括沿圆周方向布置的多个过滤器单元，以及滤液排出管，其设置在所述环状接触鼓的内部的直径方向，并收集已经通过所述过滤器的滤液，以及用于排出从所述接触器排出的滤饼的排水器。

8. 发明授权

US08865889B2 Methods for preparing alkali cellulose and cellulose ether 有权
标题翻译：制备碱纤维素和纤维素醚的方法
公开(公告)号：US08865889B2
公开(公告)日：2014-10-21
申请号：US11614717
申请日：2006-12-21
申请人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
发明人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
IPC分类号： C07H1/00 , C08B1/10 , C08B11/00 , C08B1/08 , C08B11/193
CPC分类号： C08B1/08 , C08B1/10 , C08B11/00 , C08B11/193
摘要： The invention is a method for efficiently preparing alkali cellulose having a uniform alkali distribution therein. More specifically, the invention is a method for preparing alkali cellulose comprising steps of bringing pulp into continuous contact with an alkali metal hydroxide solution in a rotary feeder type contactor to generate a contact mixture, and draining the contact mixture; and a method for preparing cellulose ether comprising use of the alkali cellulose thus prepared; an apparatus for preparing alkali cellulose, comprising a rotary feeder comprising a cyclic housing comprising an inlet port and an outlet port, a cyclic contact drum being circularly rotatable along the housing in the housing and comprising a plurality of filter cells arranged in a circumferential direction, and a filtrate-discharging tube being disposed in a diameter direction inside of the cyclic contact drum and collecting the filtrate which has passed the filter, and a drainer for draining a cake discharged from the contactor.
摘要翻译：本发明是一种有效制备碱分布均匀的碱纤维素的方法。更具体地说，本发明是一种制备碱纤维素的方法，包括使纸浆与旋转给料器型接触器中的碱金属氢氧化物溶液连续接触以产生接触混合物并排出接触混合物的步骤; 以及制备纤维素醚的方法，其包括使用如此制备的碱纤维素; 一种制备碱纤维素的设备，包括一种旋转进料器，包括一个包括入口和出口的循环壳体，循环接触鼓沿壳体沿圆周方向可旋转，并且包括沿圆周方向布置的多个过滤器单元，以及滤液排出管，其设置在所述环状接触鼓的内部的直径方向，并收集已经通过所述过滤器的滤液，以及用于排出从所述接触器排出的滤饼的排水器。

9. 发明申请

US20070149771A1 METHODS FOR PREPARING ALKALI CELLULOSE AND CELLULOSE ETHER 有权
标题翻译：制备碱性纤维素和纤维素醚的方法
公开(公告)号：US20070149771A1
公开(公告)日：2007-06-28
申请号：US11614587
申请日：2006-12-21
申请人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
发明人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
IPC分类号： C08B11/00 , C08B15/05
CPC分类号： C08B1/08 , C08B1/10 , C08B11/00 , C08B11/16 , C08B11/193
摘要： The invention is a method for efficiently preparing alkali cellulose having a uniform alkali distribution therein. More specifically, the invention is a method for preparing alkali cellulose comprising steps of bringing pulp into continuous contact with an alkali metal hydroxide solution in a bucket conveyor type contactor to generate a contact mixture, and draining the contact mixture; a method for preparing a cellulose ether comprising use of the alkali cellulose thus prepared; and an apparatus for preparing alkali cellulose comprising a bucket conveyor contactor comprising at least one inlet port for introducing pulp and an alkali metal hydroxide solution at one end and at least one outlet port for discharging a contact mixture wherein the pulp and the alkali metal hydroxide solution can be moved from one end to the other end while bringing them into contact with each other to generate the contact mixture; and a drainer for separating a cake from the contact mixture discharged from the outlet port.
摘要翻译：本发明是一种有效制备碱分布均匀的碱纤维素的方法。更具体地说，本发明是一种制备碱纤维素的方法，包括使纸浆与斗式输送机式接触器中的碱金属氢氧化物溶液连续接触以产生接触混合物并排出接触混合物的步骤; 一种制备纤维素醚的方法，包括使用由此制备的碱纤维素; 以及用于制备碱纤维素的设备，其包括铲斗输送机接触器，该接收器包括至少一个用于引入纸浆的入口和一端的碱金属氢氧化物溶液和用于排出接触混合物的至少一个出口，其中所述纸浆和碱金属氢氧化物溶液可以将它们从一端移动到另一端，同时使它们彼此接触以产生接触混合物; 以及用于将滤饼与从出口排出的接触混合物分离的排水器。

10. 发明授权

US09611333B2 Methods for preparing alkali cellulose and cellulose ether 有权
公开(公告)号：US09611333B2
公开(公告)日：2017-04-04
申请号：US11615367
申请日：2006-12-22
申请人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
发明人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
IPC分类号： C07H1/00 , C08B11/00 , C08B11/02 , C08B1/08 , C08B1/10 , C08B11/193
CPC分类号： C08B1/08 , C08B1/10 , C08B11/00 , C08B11/193
摘要： The invention is a method for efficiently preparing alkali cellulose having a uniform alkali distribution therein. More specifically, pulp and an excess alkali metal hydroxide solution are introduced continuously in a screw conveyor type contactor and brought into contact with each other in the screw conveyor type reactor. By changing at least one factor selected from the group consisting of a rotation speed of the screw conveyor, a screw pitch and a length of immersion zone, a ratio of an alkali to cellulose in the alkali cellulose obtained by draining is controlled. The alkali cellulose thus obtained is etherified into the corresponding cellulose ether.

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