JPH0476361B2 - - Google Patents

Info

Publication number
JPH0476361B2
JPH0476361B2 JP16354985A JP16354985A JPH0476361B2 JP H0476361 B2 JPH0476361 B2 JP H0476361B2 JP 16354985 A JP16354985 A JP 16354985A JP 16354985 A JP16354985 A JP 16354985A JP H0476361 B2 JPH0476361 B2 JP H0476361B2
Authority
JP
Japan
Prior art keywords
hydrogen chloride
cellulose ether
reaction
polymerization
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP16354985A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6225101A (ja
Inventor
Tooru Chiba
Yasuaki Muto
Kazumasa Maruyama
Koji Hatayama
Juichi Nishama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shin Etsu Chemical Co Ltd
Original Assignee
Shin Etsu Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=15776006&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPH0476361(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Shin Etsu Chemical Co Ltd filed Critical Shin Etsu Chemical Co Ltd
Priority to JP16354985A priority Critical patent/JPS6225101A/ja
Priority to AU60390/86A priority patent/AU583139B2/en
Priority to DE1986401621 priority patent/DE210917T1/de
Priority to DE8686401621T priority patent/DE3675993D1/de
Priority to EP19860401621 priority patent/EP0210917B1/en
Publication of JPS6225101A publication Critical patent/JPS6225101A/ja
Publication of JPH0476361B2 publication Critical patent/JPH0476361B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B11/00—Preparation of cellulose ethers
    • C08B11/20—Post-etherification treatments of chemical or physical type, e.g. mixed etherification in two steps, including purification
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/20—Pills, tablets, discs, rods
    • A61K9/28—Dragees; Coated pills or tablets, e.g. with film or compression coating
    • A61K9/2806—Coating materials
    • A61K9/2833—Organic macromolecular compounds
    • A61K9/286—Polysaccharides, e.g. gums; Cyclodextrin
    • A61K9/2866—Cellulose; Cellulose derivatives, e.g. hydroxypropyl methylcellulose

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
JP16354985A 1985-07-24 1985-07-24 低重合度セルロ−スエ−テルの製造方法 Granted JPS6225101A (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP16354985A JPS6225101A (ja) 1985-07-24 1985-07-24 低重合度セルロ−スエ−テルの製造方法
AU60390/86A AU583139B2 (en) 1985-07-24 1986-07-21 A method for the preparation of a cellulose ether having a decreased degree of polymerization
DE1986401621 DE210917T1 (de) 1985-07-24 1986-07-21 Verfahren zur herstellung eines cellulose-ethers mit einem verminderten polymerisationsgrad.
DE8686401621T DE3675993D1 (de) 1985-07-24 1986-07-21 Verfahren zur herstellung eines cellulose-ethers mit einem verminderten polymerisationsgrad.
EP19860401621 EP0210917B1 (en) 1985-07-24 1986-07-21 A method for the preparation of a cellulose ether having a decreased degree of polymerization

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16354985A JPS6225101A (ja) 1985-07-24 1985-07-24 低重合度セルロ−スエ−テルの製造方法

Publications (2)

Publication Number Publication Date
JPS6225101A JPS6225101A (ja) 1987-02-03
JPH0476361B2 true JPH0476361B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-12-03

Family

ID=15776006

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16354985A Granted JPS6225101A (ja) 1985-07-24 1985-07-24 低重合度セルロ−スエ−テルの製造方法

Country Status (4)

Country Link
EP (1) EP0210917B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS6225101A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU583139B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (2) DE3675993D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5476668A (en) * 1990-08-24 1995-12-19 Shin-Etsu Chemical Co., Ltd. Base for film-coating pharmaceuticals and method for preparing same
EP0497985B1 (en) * 1990-08-24 1998-07-22 Shin-Etsu Chemical Co., Ltd. Coating base for pharmaceutical film and production thereof
US6261218B1 (en) * 1998-12-01 2001-07-17 The Dow Chemical Company Process and apparatus for making low molecular weight cellulose ethers
US6294008B1 (en) 1999-04-21 2001-09-25 The Dow Chemical Company Haze-free cellulose ether capsules and process for making
US6306333B1 (en) 1999-06-24 2001-10-23 The Dow Chemical Company Process for making cellulose ethers having reduced yellowing and discoloration
DE10009642C1 (de) * 2000-03-01 2001-06-13 Clariant Gmbh Verfahren zur sauer katalysierten, hydrolytischen Depolymerisierung von Celluloseethern und Verwendung einer emaillierten Drucknutsche zur Depolymerisierung von Celluloseethern
KR100461565B1 (ko) * 2001-09-22 2004-12-14 삼성정밀화학 주식회사 저점도 히드록시프로필메틸 셀룰로오스의 제조방법
US8865432B2 (en) 2004-02-26 2014-10-21 Shin-Etsu Chemical Co., Ltd. Method for preparing cellulose derivatives having solubility improved
WO2007023513A1 (ja) * 2005-08-22 2007-03-01 Shin-Etsu Chemical Co., Ltd. 溶解性の改善されたセルロース誘導体の製造製法
WO2007145709A1 (en) * 2006-06-14 2007-12-21 Dow Global Technologies Inc. Process for reducing the average molecular weight of cellulose ethers
US9394376B2 (en) 2010-10-12 2016-07-19 Dow Global Technologies Llc Cellulose ethers and their use
JP5681330B2 (ja) 2011-07-27 2015-03-04 ダウ グローバル テクノロジーズ エルエルシー セルロースエーテルからアルキレンハロゲノヒドリンを除去する方法
KR20140054240A (ko) 2011-08-12 2014-05-08 다우 글로벌 테크놀로지스 엘엘씨 광학 위상지연 필름 및 제조 방법
IN2014CN02795A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 2011-10-19 2015-07-03 Dow Global Technologies Llc
US9364546B2 (en) 2012-04-11 2016-06-14 Dow Global Technologies Llc Melt-extruded composition comprising a cellulose ether
US9320799B2 (en) 2012-04-11 2016-04-26 Dow Global Technologies Llc Esterified cellulose ethers having a specific substituent distribution
JP6185559B2 (ja) 2012-04-11 2017-08-23 ダウ グローバル テクノロジーズ エルエルシー 有機希釈剤およびセルロースエーテルを含む組成物
WO2014014752A1 (en) 2012-07-17 2014-01-23 Dow Global Technologies Llc Solid dispersion comprising a highly substituted hydroxyalkyl methylcellulose
BR112015002058B1 (pt) 2012-08-24 2020-11-17 Dow Global Technologies Llc éter de celulose esterificado parcialmente reticulado, composição, dispersão sólida, processo para produzir a dispersão sólida, forma de dosagem e invólucro de cápsula
BR112015000073A2 (pt) 2012-08-24 2017-06-27 Dow Global Technologies Llc processo para preparar dois ou mais ésteres de um éter de celulose e processo para preparar um éter de celulose esterificado
KR102108814B1 (ko) 2012-08-24 2020-05-12 다우 글로벌 테크놀로지스 엘엘씨 알칼리 금속 카복실레이트 및 지방족 카복실산의 존재하의 에스테르화된 셀룰로스 에테르의 제조 방법
KR102171570B1 (ko) 2012-09-25 2020-10-29 다우 글로벌 테크놀로지스 엘엘씨 높은 벌크 밀도, 우수한 유동성 및/또는 우수한 냉수 분산성 및 약한 용액 색을 갖는 셀룰로스 유도체의 제조 방법
CN105050429B (zh) 2013-04-12 2018-06-08 陶氏环球技术有限责任公司 用于制备糖类和甲基纤维素的水溶液的方法
JP6321779B2 (ja) 2013-04-12 2018-05-09 ダウ グローバル テクノロジーズ エルエルシー 嗜好性が改善された水溶性多糖類
BR112015019577B1 (pt) 2013-04-12 2022-02-08 Nutrition & Biosciences Usa 1, Llc Processo para preparar uma solução aquosa de uma metilcelulose, solução aquosa de uma metilcelulose livre de proteínas e medicamento, alimento, ingrediente de alimento ou suplemento alimentício
JP6306691B2 (ja) 2013-05-14 2018-04-04 ダウ グローバル テクノロジーズ エルエルシー ジカルボン酸を用いたエステル化セルロースエーテル
JP6546179B2 (ja) 2014-01-16 2019-07-17 ダウ グローバル テクノロジーズ エルエルシー ３ｄ印刷用支持材料
KR102348393B1 (ko) 2014-01-16 2022-01-11 다우 글로벌 테크놀로지스 엘엘씨 적층 제조용 지지 물질의 회수
MX375728B (es) 2014-01-16 2025-03-06 Nutrition & Biosciences Usa 1 Llc Composición cerámica moldeable con calor que contiene una hidroxipropilmetilcelulosa.
EP3107940B1 (en) 2014-02-20 2019-08-07 Dow Global Technologies LLC Novel esterified cellulose ethers of high molecular weight and homogeneity
BR112017003191A2 (pt) 2014-08-27 2017-11-28 Dow Global Technologies Llc éteres de celulose esterificados com baixo teor de insolúveis em acetona
EP2995657B1 (en) 2014-09-10 2017-06-14 PPG Industries Ohio Inc. Aqueous separation liquid and process for removing paint overspray from a paint spray booth
EP3212675B1 (en) 2014-10-31 2018-08-22 Dow Global Technologies Llc Efficient process for preparing an ester of a cellulose ether
JP2017533324A (ja) 2014-10-31 2017-11-09 ダウ グローバル テクノロジーズ エルエルシー セルロースエーテルのエステルを調製するための方法
WO2016069338A1 (en) 2014-10-31 2016-05-06 Dow Global Technologies Llc Process for producing a cellulose ether acetate succinate
BR112017018367A2 (pt) 2015-03-16 2018-04-10 Dow Global Technologies Llc gelificação de éteres de celulose esterificados
BR112017018146A2 (pt) 2015-03-16 2018-04-10 Dow Global Technologies Llc processo para a preparação de um éter de celulose esterificado na presença de um ácido carboxílico alifático
BR112017018260A2 (pt) 2015-03-16 2018-04-10 Dow Global Technologies Llc éteres de celulose esterificados solúveis água tendo um baixo grau de neutralização
EP3294777B1 (en) 2015-05-15 2019-06-26 Dow Global Technologies LLC Process for producing esterified cellulose ethers of very high molecular weight and low viscosity
CN107567463A (zh) 2015-05-15 2018-01-09 陶氏环球技术有限责任公司 制备高分子量酯化纤维素醚的工艺
CA2987627C (en) 2015-06-09 2023-09-19 Dow Global Technologies Llc Support materials for 3d printing
US20180273646A1 (en) 2015-09-24 2018-09-27 Dow Global Technologies Llc. Process for preparing an ester of a cellulose ether in the presence of acetic acid and a reaction catalyst
EP3216807B2 (en) 2016-03-09 2022-05-18 Shin-Etsu Chemical Co., Ltd. Coating composition containing methyl cellulose, method for producing the same, and solid preparation
WO2017223018A1 (en) 2016-06-23 2017-12-28 Dow Global Technologies Llc Esterified cellulose ethers comprising trimellityl groups
KR20190022640A (ko) 2016-06-23 2019-03-06 다우 글로벌 테크놀로지스 엘엘씨 프탈릴기를 포함하는 에스터화된 셀룰로스 에터
WO2018039214A1 (en) 2016-08-23 2018-03-01 Dow Global Technologies Llc Esterified cellulose ethers comprising maleyl groups
BR112019003048A2 (pt) 2016-08-23 2019-05-21 Dow Global Technologies Llc ftalato de acetato de éter de celulose
KR102373750B1 (ko) * 2016-10-06 2022-03-15 신에쓰 가가꾸 고교 가부시끼가이샤 저중합도 셀룰로오스 에테르의 제조 방법
WO2018075420A1 (en) 2016-10-18 2018-04-26 Dow Global Technologies Llc Efficient process of preparing an esterified cellulose ether
WO2020131800A1 (en) 2018-12-18 2020-06-25 DDP Specialty Electronic Materials US, Inc. A sustained release composition comprising an ethylcellulose
EP3897730A1 (en) 2018-12-18 2021-10-27 DDP Specialty Electronic Materials US, Inc. A sustained release composition comprising a methylcellulose
US20220088037A1 (en) 2018-12-18 2022-03-24 DDP Specialty Electronic Materials US, Inc. A sustained release composition comprising a hydroxyalkyl methylcellulose
EP3897729B8 (en) 2018-12-18 2025-01-22 DDP Specialty Electronic Materials US, Inc. A sustained release composition comprising a methylcellulose
EP4073167A1 (en) 2019-12-09 2022-10-19 Nutrition & Biosciences USA 1, LLC Composition comprising a highly substituted hydroxypropyl methylcellulose and a sugar alcohol
JP7414685B2 (ja) 2020-10-22 2024-01-16 信越化学工業株式会社 解重合されたセルロースエーテルの製造方法
JP7414686B2 (ja) 2020-10-22 2024-01-16 信越化学工業株式会社 解重合されたセルロースエーテルの製造方法
US20240376230A1 (en) 2021-04-09 2024-11-14 Nutrition & Biosciences Usa 1, Llc A methylcellulose with high powder dissolution temperature
WO2022258512A1 (en) 2021-06-08 2022-12-15 Nutrition & Biosciences Usa 1, Llc A process for producing a methylcellulose or hydroxyalkyl methylcellulose
WO2023025653A1 (en) 2021-08-26 2023-03-02 Nutrition & Biosciences Usa 1, Llc Novel hydroxyalkyl methylcellulose and its use

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1679943A (en) * 1925-12-21 1928-08-07 Eastman Kodak Co Process for reducing the viscosity characteristics of cellulose ethers and products thereof
US1943461A (en) * 1930-04-16 1934-01-16 Ici Ltd Cellulose ether and method of making same
JPS4841037B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1964-10-26 1973-12-04
GB1296853A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1969-01-31 1972-11-22
US4061859A (en) * 1976-06-14 1977-12-06 The Dow Chemical Company Viscosity reduction of cellulose derivatives

Also Published As

Publication number Publication date
DE210917T1 (de) 1988-02-04
AU6039086A (en) 1987-01-29
EP0210917A2 (en) 1987-02-04
JPS6225101A (ja) 1987-02-03
EP0210917A3 (en) 1987-09-02
DE3675993D1 (de) 1991-01-17
AU583139B2 (en) 1989-04-20
EP0210917B1 (en) 1990-12-05

Similar Documents

Publication Publication Date Title
JPH0476361B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
US3839319A (en) Hydroxypropyl methylcellulose ethers and method of preparation
US3391135A (en) Process for the manufacture of low molecular weight cellulose derivatives
CA1065312A (en) Viscosity reduction of cellulose derivatives
US20040242862A1 (en) Method for producing a cellulose ether of low viscosity by means of acid oxidative decomposition of ground and dried cellulose ethers
TWI612061B (zh) 低聚合度纖維素醚之製造方法及由此所製造之纖維素醚
US7026471B2 (en) Purification method of hydroxypropylmethyl cellulose phthalate
ES8100675A1 (es) Procedimiento para la produccion de polvos para lavados por-tadores de aclaradores opticos
JPH10158302A (ja) ヒドロキシプロピルメチルセルロースの製造方法
KR20020033784A (ko) 온수-응집가능한 저점성 셀룰로스 에테르, 및 그의제조방법 및 용도
JP4880234B2 (ja) セルロース誘導体の製造方法
JPS5975903A (ja) 水溶性ナトリウムカルボキシメチルセルロ−スの製造方法
JPH05117301A (ja) セルロース混合エーテルの製造法
EP3567058A1 (en) Hypromellose phthalate and method for producing the same
CN106366213B (zh) O-羧甲基壳聚糖的工业化制备方法
JPS609522B2 (ja) エチルカルボキシメチルセルロ−スの製造方法
JPH10259201A (ja) 低置換度ヒドロキシプロピルセルロース、その組成物及びその製造方法
JPS609521B2 (ja) ヒドロキシプロピルセルロ−スの製造方法
CN110292567B (zh) 一种阿奇霉素胶囊的制备方法
JPH01123801A (ja) セルロースエーテルの製造法
SU990762A1 (ru) Способ получени аммониевой соли карбоксиметил-целлюлозы
JPH0372047B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
RU2196778C1 (ru) Способ получения гидроксиалкиловых эфиров целлюлозы
JPH0473441B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
KR100404928B1 (ko) 셀룰로오스와 그 유도체의 색도제거 방법

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term