公开(公告)号：US09580516B2

公开(公告)日：2017-02-28

申请号：US13398369

申请日：2012-02-16

Applicant: Mitsuo Narita

Inventor： Mitsuo Narita

IPC: C08B1/08 ,  C08B11/02 ,  C08B1/06 ,  C08B11/00 ,  C08B11/193

CPC classification number: C08B1/08 ,  C08B11/00 ,  C08B11/193

Abstract: When a combination of pulps having different alkali metal hydroxide solution absorption rates is as a raw material, contact conditions such as a contact temperature and a contact time have to be changed frequently, depending on the absorption rate of pulps currently processed, thereby causing a problem of reduced productivity. For solving the problem, provided is a method for producing alkali cellulose, comprising at least the steps of: bringing two or more types of pulps having different alkali metal hydroxide solution absorption rates into contact with an alkali metal hydroxide solution to obtain a contact product; and draining the contact product, wherein the highest absorption rate is not more than 4.0 times as fast as the lowest absorption rate.

Abstract translation: 当具有不同的碱金属氢氧化物溶液吸收速率的纸浆的组合作为原料时，接触条件如接触温度和接触时间必须根据当前处理的纸浆的吸收速率而频繁地变化，从而导致问题 降低生产力。 为了解决这个问题，提供了一种制备碱纤维素的方法，其至少包括以下步骤：将具有不同碱金属氢氧化物溶液吸收速率的两种或更多种类型的纸浆与碱金属氢氧化物溶液接触以获得接触产物; 并排出接触产物，其中最高吸收速率不超过最低吸收速率的4.0倍。

公开(公告)号：US08496782B2

公开(公告)日：2013-07-30

申请号：US12330611

申请日：2008-12-09

Applicant: Mitsuo Narita

Inventor： Mitsuo Narita

IPC: D21C3/02 ,  C08B11/00 ,  C08B15/05

CPC classification number: C08B1/08 ,  C08B11/00 ,  C08B11/193

Abstract: Provided is a method for preparing cellulose ether which is transparent as dissolved in water and has low water-insoluble content. More specifically, provided are a method for preparing alkali cellulose comprising a contact step of bringing a pulp sheet having a pore volume of 1.0 ml/g or greater, or chips into which the pulp sheet has been converted, into contact with an alkali metal hydroxide solution to obtain an alkali cellulose reaction mixture, and a drain step of draining the alkali cellulose reaction mixture; and a method for preparing water-soluble cellulose ether comprising a step of reacting the alkali cellulose with an etherifying agent.

Abstract translation: 本发明提供一种制备纤维素醚的方法，所述纤维素醚溶解在水中是透明的并且具有低水不溶性含量。 更具体地说，提供了一种制备碱纤维素的方法，其包括将孔体积为1.0ml / g以上的纸浆片或将纸浆片转化成的片与碱金属氢氧化物接触的接触步骤 溶液以获得碱纤维素反应混合物，以及排出碱纤维素反应混合物的排出步骤; 以及制备水溶性纤维素醚的方法，包括使碱纤维素与醚化剂反应的步骤。

公开(公告)号：US20130062027A1

公开(公告)日：2013-03-14

申请号：US13596398

申请日：2012-08-28

Applicant: Mitsuo Narita

Inventor： Mitsuo Narita

IPC: D21C3/02

CPC classification number: C08B11/00 ,  C08B1/06 ,  C08B1/08 ,  C08B11/02 ,  C08B11/08

Abstract: Provided is a method for preparing nonionic water-soluble cellulose ether having low insoluble content and providing a transparent solution. More specifically, provided is a method for preparing nonionic water-soluble cellulose ether comprising at least the steps of: drying a pulp sheet or pulp chips into which the pulp sheet has been converted, bringing the dried pulp sheet or pulp chips into contact with an alkali metal hydroxide solution to obtain alkali cellulose, draining the alkali cellulose, and reacting the drained alkali cellulose with an etherifying agent.

Abstract translation: 提供了一种制备具有低不溶成分并提供透明溶液的非离子水溶性纤维素醚的方法。 更具体地说，提供了一种制备非离子水溶性纤维素醚的方法，其至少包括以下步骤：干燥纸浆片或纸浆片，纸浆片或纸浆片已经转化成纸浆片或纸浆片，使干燥的纸浆片或纸浆碎片与 碱金属氢氧化物溶液以获得碱性纤维素，排出碱纤维素，并将排出的碱纤维素与醚化剂反应。

公开(公告)号：US20120214982A1

公开(公告)日：2012-08-23

申请号：US13398317

申请日：2012-02-16

Applicant: Mitsuo Narita

Inventor： Mitsuo Narita

IPC: C08B15/05 ,  C08B11/193

CPC classification number: C08B1/08 ,  C08B11/00 ,  C08B11/193

Abstract: There is provided a method for producing alkali cellulose comprising efficiently removing cellulose particles which are introduced by a pulp and have accumulated in a circulating alkali metal hydroxide solution. More specifically, there is provided a method for producing alkali cellulose, comprising at least the steps of bringing a pulp into contact with an alkali metal hydroxide solution to obtain a contact product, draining the contact product by a drainer, reusing an alkali metal hydroxide solution recovered in the step of draining for contact with a pulp, and adjusting an amount of cellulose particles in the recovered alkali metal hydroxide solution to 0.5% by weight or less prior to reusing for contact with the pulp.

Abstract translation: 提供了一种生产碱纤维素的方法，包括有效地除去由纸浆引入并累积在循环的碱金属氢氧化物溶液中的纤维素颗粒。 更具体地，提供了一种制备碱纤维素的方法，至少包括使纸浆与碱金属氢氧化物溶液接触以获得接触产物的步骤，通过排水器排出接触产物，再次使用碱金属氢氧化物溶液 在与纸浆接触的排水步骤中回收，并且在重新使用与纸浆接触之前将回收的碱金属氢氧化物溶液中的纤维素颗粒的量调节至0.5重量％以下。

公开(公告)号：US20120065390A1

公开(公告)日：2012-03-15

申请号：US13230959

申请日：2011-09-13

Applicant: Akira Kitamura ,  Takahiro Suzuki ,  Mitsuo Narita

Inventor： Akira Kitamura ,  Takahiro Suzuki ,  Mitsuo Narita

IPC: C08B11/08

CPC classification number: C08B11/08 ,  C08B1/08 ,  C08B11/20

Abstract: Provided is a method for producing low-substituted hydroxypropylcellulose in which depolymerization capable of achieving a target viscosity in a short time is carried out safely after an etherification reaction step. More specifically, provided is a method for producing low-substituted hydroxypropylcellulose having a degree of hydroxypropoxy substitution of from 9.5 to 16.0% by weight, comprising at least a step of reacting alkali cellulose with an etherifying agent and a step of carrying out depolymerization after the reaction.

Abstract translation: 本发明提供一种生产低取代羟丙基纤维素的方法，其中在醚化反应步骤之后，可以安全地进行在短时间内达到目标粘度的解聚。 更具体地说，提供了一种生产羟基丙氧基取代度为9.5〜16.0重量％的低取代羟丙基纤维素的方法，其包括至少一个使碱纤维素与醚化剂反应的步骤，以及在其后进行解聚的步骤 反应。

公开(公告)号：US20110144322A1

公开(公告)日：2011-06-16

申请号：US12959659

申请日：2010-12-03

Applicant: Rumiko Itoh ,  Mitsuo Narita ,  Miyuki Fukasawa

Inventor： Rumiko Itoh ,  Mitsuo Narita ,  Miyuki Fukasawa

IPC: C08B11/193

CPC classification number: C08B11/193 ,  A21D2/188 ,  A21D13/04 ,  A21D13/047 ,  A21D13/066 ,  A21D13/38 ,  A21D13/40 ,  A23C20/025 ,  A23L9/12 ,  A23L19/13 ,  A23L19/18 ,  A23L29/262 ,  C08B1/08 ,  C08L1/284

Abstract: Provided is hydroxypropylmethylcellulose having a high thermal gelation temperature and a high thermal gel strength and a method for producing the same and a food comprising the hydroxypropylmethylcellulose. More specifically, provided is hydroxypropylmethylcellulose having an average substitution degree of a methoxy group of 1.0 to 2.0 per glucose unit, an average substitution degree of a hydroxypropoxy group of 0.05 to 0.4 per glucose unit, and a A/B value of 0.305 or greater wherein A represents a substitution degree of a methoxy group directly substituted for a hydroxy group on carbon at position 6 in a glucose unit free from a hydroxypropoxy group-substituted hydroxy group, B represents a substitution degree of a methoxy group per glucose unit, and the A/B represents a value of A divided by B.

Abstract translation: 本发明提供具有高热凝胶化温度和高热凝胶强度的羟丙基甲基纤维素及其制备方法和包含羟丙基甲基纤维素的食品。 更具体地，提供了平均取代度为每个葡萄糖单元为1.0-2.0的羟丙基甲基纤维素，羟基丙氧基的平均取代度为每个葡萄糖单元为0.05-0.4，A / B为0.305以上，其中 A表示在不含羟基丙氧基取代羟基的葡萄糖单元中6位的碳上直接取代的羟基的取代度，B表示每个葡萄糖单元的甲氧基的取代度，A / B表示A除以B的值。

公开(公告)号：US20090165972A1

公开(公告)日：2009-07-02

申请号：US12330621

申请日：2008-12-09

Applicant: Mitsuo Narita

Inventor： Mitsuo Narita

IPC: D21C3/02

CPC classification number: C08B1/08 ,  C08B1/10 ,  C08B11/08

Abstract: Provided is a method for preparing cellulose ether which is transparent as dissolved in water and has low water-insoluble content. More specifically, provided is a method for preparing alkali cellulose, comprising a contact step of bringing a pulp sheet having a sheet density of 0.60 g/ml or less or being formed from pine, or chips into which the pulp sheet has been converted, into contact with an alkali metal hydroxide solution at 5 to 70° C. for 10 to 600 seconds to obtain an alkali cellulose reaction mixture, and a drain step of draining the reaction mixture, wherein an amount of the alkali metal hydroxide solution to be used for the contact step is selected so that the alkali cellulose obtained by the drain step has a ratio of a weight of alkali metal hydroxide component determined by neutralization titration of the alkali cellulose to a weight of solid component in the pulp {(alkali metal hydroxide component)/(solid component in the pulp)} of 0.3 to 1.5. Also provided is a method for preparing water-soluble cellulose ether, comprising a step of reacting the resulting alkali cellulose with an etherifying agent.

Abstract translation: 本发明提供一种制备纤维素醚的方法，所述纤维素醚溶解在水中是透明的并且具有低水不溶性含量。 更具体地说，提供了一种制备碱纤维素的方法，包括使纸片密度为0.60g / ml以下或由松木形成的纸浆片材或将纸浆片材转化成的切片进行接合的接触工序，形成 与碱金属氢氧化物溶液在5〜70℃下接触10〜600秒，得到碱纤维素反应混合物，排出反应混合物的排水步骤，其中所用的碱金属氢氧化物溶液用量 选择接触步骤，使得通过排水步骤获得的碱性纤维素具有通过碱纤维素的中和滴定测定的碱金属氢氧化物组分的重量与纸浆{（碱金属氢氧化物组分）中固体成分的重量） /（纸浆中的固体成分）}为0.3〜1.5。 还提供了制备水溶性纤维素醚的方法，包括使所得碱纤维素与醚化剂反应的步骤。

公开(公告)号：US20070149774A1

公开(公告)日：2007-06-28

申请号：US11615437

申请日：2006-12-22

Applicant: Mitsuo Narita ,  Masaki Tabata ,  Atsushi Yoshida ,  Hiroshi Umezawa

Inventor： Mitsuo Narita ,  Masaki Tabata ,  Atsushi Yoshida ,  Hiroshi Umezawa

IPC: C08B11/00 ,  C08B15/05

CPC classification number: C08B1/08 ,  C08B1/10 ,  C08B11/193

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20070149773A1

公开(公告)日：2007-06-28

申请号：US11615367

申请日：2006-12-22

Applicant: Mitsuo Narita ,  Masaki Tabata ,  Atsushi Yoshida ,  Hiroshi Umezawa

Inventor： Mitsuo Narita ,  Masaki Tabata ,  Atsushi Yoshida ,  Hiroshi Umezawa

IPC: C08B11/00 ,  C08B15/05

CPC classification number: C08B1/08 ,  C08B1/10 ,  C08B11/00 ,  C08B11/193

Abstract: 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.

Abstract translation: 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，将纸浆和过量的碱金属氢氧化物溶液连续引入螺旋输送型接触器中并在螺旋输送式反应器中相互接触。 通过改变选自螺旋输送机的旋转速度，螺距和浸渍区域的长度的至少一个因素，控制通过排水获得的碱性纤维素中的碱与纤维素的比例。 将如此获得的碱性纤维素醚化成相应的纤维素醚。

公开(公告)号：US20060287518A1

公开(公告)日：2006-12-21

申请号：US11448969

申请日：2006-06-07

Applicant: Mitsuo Narita ,  Atsushi Hatayama ,  Hiroshi Umezawa

Inventor： Mitsuo Narita ,  Atsushi Hatayama ,  Hiroshi Umezawa

IPC: C08B15/05 ,  C08B11/00

CPC classification number: C08B1/08 ,  C08B11/00 ,  C08B11/02 ,  C08B11/08 ,  C08B11/193

Abstract: 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.

Abstract translation: 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。