AU583139B2 - A method for the preparation of a cellulose ether having a decreased degree of polymerization - Google Patents

A method for the preparation of a cellulose ether having a decreased degree of polymerization

Info

Publication number
AU583139B2
AU583139B2 AU60390/86A AU6039086A AU583139B2 AU 583139 B2 AU583139 B2 AU 583139B2 AU 60390/86 A AU60390/86 A AU 60390/86A AU 6039086 A AU6039086 A AU 6039086A AU 583139 B2 AU583139 B2 AU 583139B2
Authority
AU
Australia
Prior art keywords
polymerization
preparation
cellulose ether
decreased degree
decreased
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.)
Ceased
Application number
AU60390/86A
Other languages
English (en)
Other versions
AU6039086A (en
Inventor
Tohru Chiba
Atsushi Hatayama
Hiroaki Muto
Yuichi Nishiyama
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=AU583139(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
Publication of AU6039086A publication Critical patent/AU6039086A/en
Application granted granted Critical
Publication of AU583139B2 publication Critical patent/AU583139B2/en
Anticipated expiration legal-status Critical
Ceased 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)
AU60390/86A 1985-07-24 1986-07-21 A method for the preparation of a cellulose ether having a decreased degree of polymerization Ceased AU583139B2 (en)

Applications Claiming Priority (2)

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
JP60-163549 1985-07-24

Publications (2)

Publication Number Publication Date
AU6039086A AU6039086A (en) 1987-01-29
AU583139B2 true AU583139B2 (en) 1989-04-20

Family

ID=15776006

Family Applications (1)

Application Number Title Priority Date Filing Date
AU60390/86A Ceased AU583139B2 (en) 1985-07-24 1986-07-21 A method for the preparation of a cellulose ether having a decreased degree of polymerization

Country Status (4)

Country Link
EP (1) EP0210917B1 (enExample)
JP (1) JPS6225101A (enExample)
AU (1) AU583139B2 (enExample)
DE (2) DE3675993D1 (enExample)

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
EP1878752B1 (en) * 2005-08-22 2014-02-26 Shin-Etsu Chemical Co., Ltd. Process for producing cellulose derivative with improved solubility
JP5226677B2 (ja) * 2006-06-14 2013-07-03 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平均分子量を減少させる方法
WO2012051035A1 (en) 2010-10-12 2012-04-19 Dow Global Technologies Llc Novel cellulose ethers and their use
KR101775414B1 (ko) 2011-07-27 2017-09-19 다우 글로벌 테크놀로지스 엘엘씨 셀룰로스 에테르로부터 알킬렌 할로게노하이드린을 제거하는 방법
US20140168771A1 (en) 2011-08-12 2014-06-19 Dow Global Technologies Llc Optical retardation film and method of manufacturing
BR112014008689A2 (pt) 2011-10-19 2017-04-25 Dow Global Technologies Llc medicamento fluível ou ingerível por colher, alimento, ingrediente alimentício ou suplemento alimentar, método para induzir saciedade ou para reduzir reversivelmente o volume vazio do estômago em um indivíduo e método para reduzir a ingestão calórica em um indivíduo
WO2013154981A1 (en) 2012-04-11 2013-10-17 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
PT2836559T (pt) 2012-04-11 2016-08-31 Dow Global Technologies Llc Composição que compreende um diluente orgânico e um éter de celulose.
KR102160903B1 (ko) 2012-07-17 2020-10-05 다우 글로벌 테크놀로지스 엘엘씨 고도로 치환된 하이드록시알킬 메틸셀룰로즈를 포함하는 고체 분산물
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
CN104755503B (zh) 2012-08-24 2018-03-06 陶氏环球技术有限责任公司 在脂族羧酸的存在下制备纤维素醚的酯的方法
MX2015002426A (es) 2012-08-24 2015-06-22 Dow Global Technologies Llc Procedimiento para preparar un eter de celulosa esterificado en presencia de un carboxilato de metal alcalino y un acido carboxilico alifatico.
JP6039812B2 (ja) 2012-09-25 2016-12-07 ダウ グローバル テクノロジーズ エルエルシー 冷水中で高い嵩密度、良好な流動性、および／または分散性、ならびに低い溶液色を有するセルロース誘導体の製造方法
BR112015019575A2 (pt) 2013-04-12 2017-07-18 Dow Global Technologies Llc polissacarídeo solúvel em água livre de amido, alimento, ingrediente de alimento, ou suplemento alimentício e método para melhorar a palatabilidade de um polissacarídeo solúvel em água livre de amido
JP6342990B2 (ja) 2013-04-12 2018-06-13 ダウ グローバル テクノロジーズ エルエルシー メチルセルロースの水溶液を調製するための方法
WO2014168917A1 (en) 2013-04-12 2014-10-16 Dow Global Technologies Llc Process for preparing an aqueous solution of saccharides and methylcellulose
KR20160006788A (ko) 2013-05-14 2016-01-19 다우 글로벌 테크놀로지스 엘엘씨 디카복실산으로 에스테르화된 셀룰로스 에테르
CN105899473B (zh) 2014-01-16 2017-08-29 陶氏环球技术有限责任公司 包含羟丙基甲基纤维素的热可塑性陶瓷组合物
WO2015108770A1 (en) 2014-01-16 2015-07-23 Dow Global Technologies Llc Recovery of additive manufacturing support materials
CA2936357C (en) 2014-01-16 2022-04-26 Dow Global Technologies Llc Support materials for 3d printing
US10759873B2 (en) 2014-02-20 2020-09-01 Dow Global Technologies Llc Esterified cellulose ethers of high molecular weight and homogeneity
CN106661130B (zh) 2014-08-27 2020-07-24 陶氏环球技术有限责任公司 不溶于丙酮的含量低的酯化纤维素醚
ES2834883T3 (es) 2014-09-10 2021-06-21 Ppg Ind Ohio Inc Líquido de separación acuoso y proceso para eliminar el rociado excesivo de pintura de una cabina de pintura por aerosol
KR101839295B1 (ko) 2014-10-31 2018-04-27 다우 글로벌 테크놀로지스 엘엘씨 셀룰로오스 에테르의 에스테르를 제조하기 위한 방법
WO2016069338A1 (en) 2014-10-31 2016-05-06 Dow Global Technologies Llc Process for producing a cellulose ether acetate succinate
WO2016069343A1 (en) 2014-10-31 2016-05-06 Dow Global Technologies Llc Efficient process for preparing an ester of a cellulose ether
CN107406522B (zh) 2015-03-16 2019-02-26 陶氏环球技术有限责任公司 酯化纤维素醚的凝胶化
US10214594B2 (en) 2015-03-16 2019-02-26 Dow Global Technologies Llc Water-soluble esterified cellulose ethers having a low degree of neutralization
EP3270972B1 (en) 2015-03-16 2019-01-09 Dow Global Technologies LLC Process for preparing an esterified cellulose ether in the presence of an aliphatic carboxylic acid
KR20180008524A (ko) 2015-05-15 2018-01-24 다우 글로벌 테크놀로지스 엘엘씨 초고분자량 및 저점도의 에스테르화된 셀룰로오스 에테르의 제조 방법
EP3294776B1 (en) 2015-05-15 2020-08-05 Dow Global Technologies LLC Process of preparing a high molecular weight esterified cellulose ether
JP6810060B2 (ja) 2015-06-09 2021-01-06 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
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
CN109312001B (zh) 2016-06-23 2020-03-03 陶氏环球技术有限责任公司 包含邻苯二甲酰基的酯化纤维素醚
WO2018039214A1 (en) 2016-08-23 2018-03-01 Dow Global Technologies Llc Esterified cellulose ethers comprising maleyl groups
KR20190042604A (ko) 2016-08-23 2019-04-24 다우 글로벌 테크놀로지스 엘엘씨 셀룰로스 에테르 아세테이트 프탈레이트
KR102373750B1 (ko) * 2016-10-06 2022-03-15 신에쓰 가가꾸 고교 가부시끼가이샤 저중합도 셀룰로오스 에테르의 제조 방법
US20210102004A1 (en) 2016-10-18 2021-04-08 Dow Global Technologies Llc Efficient process of preparing an esterified cellulose ether
WO2020131795A1 (en) 2018-12-18 2020-06-25 DDP Specialty Electronic Materials US, Inc. A sustained release composition comprising a hydroxyalkyl methylcellulose
US20220031623A1 (en) 2018-12-18 2022-02-03 DDP Specialty Electronic Materials US, Inc. A sustained release composition comprising a methylcellulose
EP3897730A1 (en) 2018-12-18 2021-10-27 DDP Specialty Electronic Materials US, Inc. A sustained release composition comprising a methylcellulose
WO2020131800A1 (en) 2018-12-18 2020-06-25 DDP Specialty Electronic Materials US, Inc. A sustained release composition comprising an ethylcellulose
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
EP4323444A1 (en) 2021-04-09 2024-02-21 Nutrition & Biosciences USA 1, LLC A methylcellulose with high powder dissolution temperature
EP4352109A1 (en) 2021-06-08 2024-04-17 Nutrition & Biosciences USA 1, LLC A process for producing a methylcellulose or hydroxyalkyl methylcellulose
CN118055952A (zh) 2021-08-26 2024-05-17 营养与生物科学美国1有限责任公司 新颖的羟烷基甲基纤维素及其用途

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1049270A (en) * 1969-01-31 1971-07-22 Imperial Chemical Industries Limited Qaueous solutions of cellulose ethers
US4061859A (en) * 1976-06-14 1977-12-06 The Dow Chemical Company Viscosity reduction of cellulose derivatives

Family Cites Families (3)

* 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 (enExample) * 1964-10-26 1973-12-04

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1049270A (en) * 1969-01-31 1971-07-22 Imperial Chemical Industries Limited Qaueous solutions of cellulose ethers
US4061859A (en) * 1976-06-14 1977-12-06 The Dow Chemical Company Viscosity reduction of cellulose derivatives

Also Published As

Publication number Publication date
EP0210917A2 (en) 1987-02-04
JPH0476361B2 (enExample) 1992-12-03
DE3675993D1 (de) 1991-01-17
AU6039086A (en) 1987-01-29
DE210917T1 (de) 1988-02-04
JPS6225101A (ja) 1987-02-03
EP0210917A3 (en) 1987-09-02
EP0210917B1 (en) 1990-12-05

Similar Documents

Publication Publication Date Title
AU583139B2 (en) A method for the preparation of a cellulose ether having a decreased degree of polymerization
AU588169B2 (en) Process for the preparation of alumoxanes
AU1732088A (en) Process for the preparation of a 1-olefin polymer
AU588102B2 (en) Process for the preparation of LMW-heparin
AU583394B2 (en) Process for the preparation of a silver-containing catalyst
AU580175B2 (en) Process for the preparation of a silver-containing catalyst
AU8306487A (en) Process for the preparation of mercaptomethylphenols
AU574900B2 (en) Polyaryl ether
AU6108386A (en) New process for the preparation of sphingosine derivatives
AU5747286A (en) Process for the preparation of epoxy resins
AU585331B2 (en) A process for the manufacture of cellulose pulps and cellulose pulps obtained thereby
AU587279B2 (en) Process for the preparation of N-sulfamyl-3-(2-guanidino- thiazol-4-yl-methylthio) propionamidine
AU7765887A (en) Process for the preparation of linear organopolysiloxanediols
AU580880B2 (en) Process for the preparation of a silver-containing catalyst
AU590431B2 (en) A method for the preparation of 2,4-diamino-3-oxy-6- piperidyl-pyrimidine
AU2599888A (en) Process for the preparation of a benzaldehyde
AU584377B2 (en) Polymerization process
AU585564B2 (en) Polymerization process
AU584045B2 (en) Process for the preparation of N-tetrathiodimorpholine
AU7418087A (en) Process for the preparation of a polyolefin
AU585973B2 (en) Process for the preparation of eburnamenine derivatives
AU586823B2 (en) Process for the preparation of n-thienyl-chloroacetamides
AU8018587A (en) Process for the preparation of 1-aminoanthraquinones
AU579029B2 (en) Process for the preparation of ` -butyrolactams
AU4815590A (en) Process for the preparation of 3-acylpyrrolidones