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1. 发明授权

US10881124B2 Method for producing alkyl cellulose 有权
公开(公告)号：US10881124B2
公开(公告)日：2021-01-05
申请号：US14965149
申请日：2015-12-10
申请人： Shin-Etsu Chemical Co., Ltd. , SE Tylose GmbH & Co. KG
发明人： Akira Kitamura , Atsushi Yamamoto , Mitsuo Narita , Heiko Nebel , Andreas Schultz
IPC分类号： C08B11/02 , A23L27/00 , C08L1/28 , A23D7/00 , C08B1/08
摘要： Provided is a method for producing an alkyl cellulose having a high viscosity and not having an excessively high gel strength. More specifically, there is provided a method for producing an alkyl cellulose comprising the steps of: mixing a cellulose pulp with a first alkali metal hydroxide solution with stirring to obtain alkali cellulose; reacting the alkali cellulose with an alkylating agent to obtain a first reaction mixture; blending a second alkali metal hydroxide solution with the first reaction mixture with stirring, without further blending of the alkylating agent, to obtain a second reaction mixture; and purifying the second reaction mixture to obtain an alkyl cellulose. There is also provided an alkyl cellulose being produced by the above method and having a degree of substitution of alkyl group of 27 to 33% by weight.

2. 发明申请

US20160168271A1 METHOD FOR PRODUCING ALKYL CELLULOSE 审中-公开
标题翻译：生产烷基纤维素的方法
公开(公告)号：US20160168271A1
公开(公告)日：2016-06-16
申请号：US14965149
申请日：2015-12-10
申请人： Shin-Etsu Chemical Co., Ltd. , SE Tylose GmbH & Co. KG
发明人： Akira Kitamura , Atsushi Yamamoto , Mitsuo Narita , Heiko Nebel , Andreas Schultz
IPC分类号： C08B11/02
CPC分类号： A23L27/80 , A23D7/003 , A23V2002/00 , C08B1/08 , C08B11/02 , C08L1/28
摘要： Provided is a method for producing an alkyl cellulose having a high viscosity and not having an excessively high gel strength. More specifically, there is provided a method for producing an alkyl cellulose comprising the steps of: mixing a cellulose pulp with a first alkali metal hydroxide solution with stirring to obtain alkali cellulose; reacting the alkali cellulose with an alkylating agent to obtain a first reaction mixture; blending a second alkali metal hydroxide solution with the first reaction mixture with stirring, without further blending of the alkylating agent, to obtain a second reaction mixture; and purifying the second reaction mixture to obtain an alkyl cellulose. There is also provided an alkyl cellulose being produced by the above method and having a degree of substitution of alkyl group of 27 to 33% by weight.
摘要翻译：提供一种具有高粘度且不具有过高凝胶强度的烷基纤维素的制备方法。更具体地，提供了一种制备烷基纤维素的方法，包括以下步骤：在搅拌下将纤维素纸浆与第一碱金属氢氧化物溶液混合以获得碱纤维素; 使碱纤维素与烷基化剂反应得到第一反应混合物; 在搅拌下将第二碱金属氢氧化物与第一反应混合物混合，而不进一步共混烷基化剂，得到第二反应混合物; 并纯化第二反应混合物以获得烷基纤维素。还提供了通过上述方法制备并具有27至33重量％的烷基取代度的烷基纤维素。

3. 发明授权

US11089804B2 Oil-in-water type composition and food using same 有权
公开(公告)号：US11089804B2
公开(公告)日：2021-08-17
申请号：US15534417
申请日：2015-12-10
申请人： SHIN-ETSU CHEMICAL CO., LTD. , SE TYLOSE GMBH & CO. KG
发明人： Atsushi Yamamoto , Akira Kitamura , Mitsuo Narita , Heiko Nebel , Anita Hirte
IPC分类号： A23L29/262 , A23L27/00 , C08L1/28 , C08B11/02 , A23D7/00 , C08B1/08
摘要： An oil-in-water type composition which can provide a chewy texture both in a non-cooked state and a heated state and does not show water/oil separation, including: an alkyl cellulose, a 1% by mass aqueous solution of which has a viscosity at 20° C. of from 4,000 to 11,000 mPa·s when measured with a Brookfield type viscometer and a 1.5% by mass aqueous solution of which has a storage modulus G′ (65° C.) at 65° C. of from 2,500 to 4,500 Pa; an edible oil or fat; and water. Also provided is a food using the alkyl cellulose.

4. 发明授权

US11634510B2 Water-soluble cellulose ether and method for producing the same 有权
公开(公告)号：US11634510B2
公开(公告)日：2023-04-25
申请号：US15930079
申请日：2020-05-12
申请人： Shin-Etsu Chemical Co., Ltd.
发明人： Akira Kitamura , Mitsuhiro Yoshida , Mitsuo Narita
IPC分类号： C08B11/20
摘要： There are provided a method for efficiently producing a water-soluble cellulose ether without using a special apparatus, and a novel water-soluble cellulose ether. More specifically, there are provided a method for producing a water-soluble cellulose ether including a first pulverization step of pulverizing a starting water-soluble cellulose ether to obtain a first pulverization product, and a first sieving step of sieving the first pulverization product by using a first sieve whose mesh surface is coated with an inorganic metal compound to obtain a first-sieve-passed water-soluble cellulose ether fraction; and a novel water-soluble cellulose ether.

5. 发明申请

US20220127380A1 METHOD FOR PRODUCING DEPOLYMERIZED CELLULOSE ETHER 有权
公开(公告)号：US20220127380A1
公开(公告)日：2022-04-28
申请号：US17505926
申请日：2021-10-20
申请人： Shin-Etsu Chemical Co., Ltd.
发明人： Shinnosuke Inada , Taishi Kitaguchi , Akira Kitamura , Mitsuo Narita
IPC分类号： C08B11/20
摘要： There is provided a method for producing a depolymerized cellulose ether having yellowness reduced. More specifically, there is provided a method for producing a depolymerized cellulose ether comprising a depolymerization step of depolymerizing a cellulose ether with an aqueous solution of acid in the presence of a polyhydric alcohol having 2 to 6 carbon atoms.

6. 发明授权

US10767023B2 Porous water-soluble nonionic cellulose ether having excellent solubility and method for producing the same 有权
公开(公告)号：US10767023B2
公开(公告)日：2020-09-08
申请号：US15333616
申请日：2016-10-25
申请人： SHIN-ETSU CHEMICAL CO., LTD.
发明人： Mitsuo Narita
IPC分类号： C08J9/24 , C08B11/08 , C08L1/28 , C08B11/20 , B07B1/00 , B02C4/00
摘要： There are provided a porous water-soluble nonionic cellulose ether having an average pore size of 36 μm or smaller and an average particle size of from 30 to 300 μm; and a method for continuously producing said cellulose ether comprising the steps of: pulverizing a first water-soluble nonionic cellulose ether to obtain a first pulverized product, and sieving the pulverized product through a sieve having an opening of from 40 to 400 μm to obtain a first residue-on-sieve and a first sieve-passing fraction, wherein a portion or all of the first residue-on-sieve containing particles having particle sizes smaller than and greater than the opening of the sieve is re-pulverized together with a second water-soluble nonionic cellulose ether in the step of pulverizing to obtain a second pulverized product, which is pulverized to obtain the cellulose ether as a second sieve-passing fraction containing the re-pulverized particles.

7. 发明申请

US20200031954A1 METHOD FOR PRODUCING HYPROMELLOSE ACETATE SUCCINATE 审中-公开
公开(公告)号：US20200031954A1
公开(公告)日：2020-01-30
申请号：US16521253
申请日：2019-07-24
申请人： SHIN-ETSU CHEMICAL CO., LTD.
发明人： Taishi Kitaguchi , Akiko Tsuchida , Akira Kitamura , Mitsuo Narita
IPC分类号： C08B3/16
摘要： There is provided a method for producing hypromellose acetate succinate (HPMCAS), the method not requiring any special device and facilitating removal of impurities. More specifically, there is provided a method for producing HPMCAS, including an esterification step of esterifying hypromellose with an acetylating agent and a succinoylating agent in the presence of an aliphatic carboxylic acid to obtain a reaction product solution containing HPMCAS; a precipitation step of precipitating the HPMCAS by mixing the reaction product solution with water to obtain a suspension of the precipitated HPMCAS; a neutralization step of neutralizing the suspension with a basic substance to obtain a neutralized suspension; and a washing step of washing the HPMCAS contained in the neutralized suspension to obtain the washed HPMCAS.

8. 发明授权

US09487594B2 Method for producing water-soluble nonionic cellulose ether excellent in storage stability 有权
标题翻译：用于生产储存稳定性优异的水溶性非离子纤维素醚的方法
公开(公告)号：US09487594B2
公开(公告)日：2016-11-08
申请号：US14305174
申请日：2014-06-16
申请人： Shin-Etsu Chemical Co., Ltd.
发明人： Mitsuo Narita
IPC分类号： C08B11/08 , C08B11/00 , C08B11/20 , C08B11/193
CPC分类号： C08B11/20 , C08B11/00 , C08B11/08 , C08B11/193
摘要： Provided is a water-soluble nonionic cellulose ether excellent in storage stability. More specifically, provided is a method for producing a water-soluble nonionic cellulose ether including an etherification step of reacting an alkali cellulose with an etherifying agent to obtain a crude cellulose ether, a washing step of washing the crude cellulose ether to obtain a washed cellulose ether, a drying step of drying the washed cellulose ether, and a grinding step of grinding the cellulose ether during or after the drying, wherein during the washing step or in any of the steps after the washing step, a pH regulator is mixed so as to allow an aqueous 2% by weight solution of the cellulose ether as an end product to have a pH value of from 7.0 to 10.5.
摘要翻译：提供了保存稳定性优异的水溶性非离子性纤维素醚。更具体地，提供一种水溶性非离子纤维素醚的制造方法，其包括使碱性纤维素与醚化剂反应得到粗纤维素醚的醚化工序，洗涤粗纤维素醚以洗涤纤维素乙醚，干燥洗涤的纤维素醚的干燥步骤，以及在干燥过程中或之后研磨纤维素醚的研磨步骤，其中在洗涤步骤或洗涤步骤之后的任何步骤中，将pH调节剂混合成以使2重量％的纤维素醚水溶液作为最终产物的pH值为7.0至10.5。

9. 发明授权

US09428590B2 Method for dehydrating hydrous low-substituted hydroxypropyl cellulose and method for producing low-substituted hydroxypropyl cellulose by using same 有权
标题翻译：脱水含水低取代羟丙基纤维素的方法和使用它的低取代羟丙基纤维素的制造方法
公开(公告)号：US09428590B2
公开(公告)日：2016-08-30
申请号：US14454964
申请日：2014-08-08
申请人： Shin-Etsu Chemical Co., Ltd.
发明人： Junichi Matsubara , Atsuhiko Yonemochi , Mitsuo Narita
IPC分类号： C08B11/20 , C08B11/08
CPC分类号： C08B11/20 , C08B11/08
摘要： Reduction of the energy burden in a step of drying hydrous low-substituted hydroxypropyl cellulose (L-HPC), reduction of water content of a cake obtained by dehydration, and others are targeted. More specifically, provided is a method for dehydrating hydrous L-HPC with a compression type dehydrator by feeding the hydrous L-HPC to a screw conveyer connected to the inlet of the dehydrator, including steps of: starting the operation of the conveyer to fill the conveyer and the dehydrator with the hydrous L-HPC, starting the operation of the filled dehydrator, and feeding the hydrous L-HPC to the conveyer, while discharging dehydrated L-HPC from an outlet of the dehydrator, wherein a feed rate of feeding the hydrous L-HPC to the conveyer is equal to a discharge rate of discharging the dehydrated L-HPC in terms of net weight of cellulose ether, and a method for producing L-HPC by using the above method.
摘要翻译：干燥含水低取代羟丙基纤维素（L-HPC）的步骤中的能量负荷的降低，脱水得到的滤饼的水分含量的降低等。更具体地，提供了一种通过将水合L-HPC进料到连接到脱水机的入口的螺旋输送机上的压缩型脱水机来脱水含水L-HPC的方法，包括以下步骤：开始输送机的操作以填充输送机和脱水器与水合L-HPC开始，开始填充脱水器的操作，并且将水合L-HPC输送到输送机，同时从脱水器的出口排放脱水的L-HPC，其中进料速率对于输送机的含水L-HPC等于脱水的L-HPC以纤维素醚的净重排出的排出量，以及使用上述方法生产L-HPC的方法。

10. 发明授权

US11319385B2 Method for producing hypromellose acetate succinate 有权
公开(公告)号：US11319385B2
公开(公告)日：2022-05-03
申请号：US16521253
申请日：2019-07-24
申请人： SHIN-ETSU CHEMICAL CO., LTD.
发明人： Taishi Kitaguchi , Akiko Tsuchida , Akira Kitamura , Mitsuo Narita
IPC分类号： C08B3/16
摘要： There is provided a method for producing hypromellose acetate succinate (HPMCAS), the method not requiring any special device and facilitating removal of impurities. More specifically, there is provided a method for producing HPMCAS, including an esterification step of esterifying hypromellose with an acetylating agent and a succinoylating agent in the presence of an aliphatic carboxylic acid to obtain a reaction product solution containing HPMCAS; a precipitation step of precipitating the HPMCAS by mixing the reaction product solution with water to obtain a suspension of the precipitated HPMCAS; a neutralization step of neutralizing the suspension with a basic substance to obtain a neutralized suspension; and a washing step of washing the HPMCAS contained in the neutralized suspension to obtain the washed HPMCAS.

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