DE210917T1 - Verfahren zur herstellung eines cellulose-ethers mit einem verminderten polymerisationsgrad. - Google Patents

Verfahren zur herstellung eines cellulose-ethers mit einem verminderten polymerisationsgrad.

Info

Publication number
DE210917T1
DE210917T1 DE1986401621 DE86401621T DE210917T1 DE 210917 T1 DE210917 T1 DE 210917T1 DE 1986401621 DE1986401621 DE 1986401621 DE 86401621 T DE86401621 T DE 86401621T DE 210917 T1 DE210917 T1 DE 210917T1
Authority
DE
Germany
Prior art keywords
cellulose ether
hydrogen chloride
reactant
chloride solution
amount
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.)
Pending
Application number
DE1986401621
Other languages
German (de)
English (en)
Inventor
Tohru Chiba
Atsushi Joetsu-Shi Niigata-Ken Hatayama
Kazumasa Maruyama
Hiroaki Muto
Yuichi Nakakubiki-Gun Niigata-Ken 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=DE210917(T1) "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 DE210917T1 publication Critical patent/DE210917T1/de
Pending 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)
DE1986401621 1985-07-24 1986-07-21 Verfahren zur herstellung eines cellulose-ethers mit einem verminderten polymerisationsgrad. Pending DE210917T1 (de)

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 (1)

Publication Number Publication Date
DE210917T1 true DE210917T1 (de) 1988-02-04

Family

ID=15776006

Family Applications (2)

Application Number Title Priority Date Filing Date
DE1986401621 Pending DE210917T1 (de) 1985-07-24 1986-07-21 Verfahren zur herstellung eines cellulose-ethers mit einem verminderten polymerisationsgrad.
DE8686401621T Revoked DE3675993D1 (de) 1985-07-24 1986-07-21 Verfahren zur herstellung eines cellulose-ethers mit einem verminderten polymerisationsgrad.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE8686401621T Revoked DE3675993D1 (de) 1985-07-24 1986-07-21 Verfahren zur herstellung eines cellulose-ethers mit einem verminderten polymerisationsgrad.

Country Status (4)

Country Link
EP (1) EP0210917B1 (en:Method)
JP (1) JPS6225101A (en:Method)
AU (1) AU583139B2 (en:Method)
DE (2) DE210917T1 (en:Method)

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US20140168771A1 (en) 2011-08-12 2014-06-19 Dow Global Technologies Llc Optical retardation film and method of manufacturing
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KR102065326B1 (ko) 2012-04-11 2020-01-13 다우 글로벌 테크놀로지스 엘엘씨 유기 희석제와 셀룰로즈 에테르를 포함하는 조성물
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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
EP2888289B1 (en) 2012-08-24 2019-08-07 Dow Global Technologies LLC Partially cross-linked esterified cellulose ethers
WO2014052213A1 (en) 2012-09-25 2014-04-03 Dow Global Technologies Llc Process for producing cellulose derivatives of high bulk density, good flowability and/or dispersibility in cold water as well as low solution color
WO2014168917A1 (en) 2013-04-12 2014-10-16 Dow Global Technologies Llc Process for preparing an aqueous solution of saccharides and methylcellulose
EP2986671B1 (en) 2013-04-12 2017-07-12 Dow Global Technologies LLC Process for preparing an aqueous solution of a methylcellulose
WO2014168914A1 (en) 2013-04-12 2014-10-16 Dow Global Technologies Llc Water-soluble polysaccharides of improved palatability
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KR102348393B1 (ko) 2014-01-16 2022-01-11 다우 글로벌 테크놀로지스 엘엘씨 적층 제조용 지지 물질의 회수
WO2015108768A1 (en) 2014-01-16 2015-07-23 Dow Global Technologies Llc Support materials for 3d printing
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JP6291137B2 (ja) 2014-10-31 2018-03-14 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アセテートサクシネートを生成するための方法
KR20170128358A (ko) 2015-03-16 2017-11-22 다우 글로벌 테크놀로지스 엘엘씨 낮은 중화도를 갖는 수용성 에스테르화 셀룰로오스 에테르
JP6295380B2 (ja) 2015-03-16 2018-03-14 ダウ グローバル テクノロジーズ エルエルシー 脂肪族カルボン酸の存在下でエステル化セルロースエーテルを調製するためのプロセス
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CN107567462B (zh) 2015-05-15 2020-10-16 陶氏环球技术有限责任公司 用于制造具有极高分子量和低粘度的酯化纤维素醚的方法
KR20180008523A (ko) 2015-05-15 2018-01-24 다우 글로벌 테크놀로지스 엘엘씨 고분자량의 에스테르화된 셀룰로오스 에테르의 제조 방법
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EP3504246B1 (en) 2016-08-23 2020-07-22 Dow Global Technologies LLC Cellulose ether acetate phthalates
KR102373750B1 (ko) * 2016-10-06 2022-03-15 신에쓰 가가꾸 고교 가부시끼가이샤 저중합도 셀룰로오스 에테르의 제조 방법
CN109803984A (zh) 2016-10-18 2019-05-24 陶氏环球技术有限责任公司 制备酯化纤维素醚的有效方法
EP3897730A1 (en) 2018-12-18 2021-10-27 DDP Specialty Electronic Materials US, Inc. A sustained release composition comprising a methylcellulose
US20220031623A1 (en) 2018-12-18 2022-02-03 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
US20220088037A1 (en) 2018-12-18 2022-03-24 DDP Specialty Electronic Materials US, Inc. A sustained release composition comprising a hydroxyalkyl methylcellulose
WO2021118917A1 (en) 2019-12-09 2021-06-17 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
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US1943461A (en) * 1930-04-16 1934-01-16 Ici Ltd Cellulose ether and method of making same
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US4061859A (en) * 1976-06-14 1977-12-06 The Dow Chemical Company Viscosity reduction of cellulose derivatives

Also Published As

Publication number Publication date
AU6039086A (en) 1987-01-29
EP0210917B1 (en) 1990-12-05
JPS6225101A (ja) 1987-02-03
EP0210917A2 (en) 1987-02-04
DE3675993D1 (de) 1991-01-17
JPH0476361B2 (en:Method) 1992-12-03
AU583139B2 (en) 1989-04-20
EP0210917A3 (en) 1987-09-02

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