DE69216756D1 - Verfahren zur Herstellung von einem Cellulosemischether - Google Patents

Verfahren zur Herstellung von einem Cellulosemischether

Info

Publication number
DE69216756D1
DE69216756D1 DE69216756T DE69216756T DE69216756D1 DE 69216756 D1 DE69216756 D1 DE 69216756D1 DE 69216756 T DE69216756 T DE 69216756T DE 69216756 T DE69216756 T DE 69216756T DE 69216756 D1 DE69216756 D1 DE 69216756D1
Authority
DE
Germany
Prior art keywords
preparation
cellulose ether
mixed cellulose
mixed
ether
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.)
Revoked
Application number
DE69216756T
Other languages
English (en)
Other versions
DE69216756T2 (de
Inventor
Atsunobu Kiyose
Yonosuke Kato
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.)
Daicel Corp
Original Assignee
Daicel Chemical Industries 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=17658296&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69216756(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Daicel Chemical Industries Ltd filed Critical Daicel Chemical Industries Ltd
Application granted granted Critical
Publication of DE69216756D1 publication Critical patent/DE69216756D1/de
Publication of DE69216756T2 publication Critical patent/DE69216756T2/de
Anticipated expiration legal-status Critical
Revoked 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
    • C08B11/193—Mixed ethers, i.e. ethers with two or more different etherifying groups
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
DE69216756T 1991-10-29 1992-10-29 Verfahren zur Herstellung von einem Cellulosemischether Revoked DE69216756T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3282881A JP3002916B2 (ja) 1991-10-29 1991-10-29 セルロース混合エーテルの製造法

Publications (2)

Publication Number Publication Date
DE69216756D1 true DE69216756D1 (de) 1997-02-27
DE69216756T2 DE69216756T2 (de) 1997-05-28

Family

ID=17658296

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69216756T Revoked DE69216756T2 (de) 1991-10-29 1992-10-29 Verfahren zur Herstellung von einem Cellulosemischether

Country Status (4)

Country Link
US (1) US5463037A (de)
EP (1) EP0539979B1 (de)
JP (1) JP3002916B2 (de)
DE (1) DE69216756T2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6261218B1 (en) * 1998-12-01 2001-07-17 The Dow Chemical Company Process and apparatus for making low molecular weight cellulose ethers
KR100661918B1 (ko) * 1999-04-01 2006-12-28 다우 글로벌 테크놀로지스 인크. 겔 강도가 증가된 메틸셀룰로스, 이의 제조방법 및 이를 포함하는 식품 조성물
EP1230456B1 (de) * 1999-04-26 2006-07-12 BKI Holding Corporation Celluloseether und verfahren zu deren herstellung
US6686464B1 (en) 1999-04-26 2004-02-03 Bki Holding Corporation Cellulose ethers and method of preparing the same
BR0115388A (pt) 2000-11-01 2005-01-04 Bki Holding Corp éteres de celulose e método de preparação dos mesmos
EP1795541A4 (de) * 2004-09-29 2011-07-06 Kowa Co Phosphorester eines zellulosederivats und metalladsorber damit
WO2006088953A1 (en) 2005-02-17 2006-08-24 Hercules Incorporated Blocky hydroxyethylcellulose, derivatives thereof, process of making, and uses thereof
US8252266B2 (en) 2010-08-09 2012-08-28 Nalco Company Recovery of alumina trihydrate during the bayer process using scleroglucan
JP6133969B2 (ja) * 2012-04-11 2017-05-24 ダウ グローバル テクノロジーズ エルエルシー 特定の置換基分布を有するエステル化セルロースエーテル
US10427950B2 (en) 2015-12-04 2019-10-01 Ecolab Usa Inc. Recovery of mining processing product using boronic acid-containing polymers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2415154C2 (de) * 1974-03-29 1985-05-23 Henkel KGaA, 4000 Düsseldorf Verfahren zur Herstellung von Cellulosemischethern, die neben Alkylgruppen, Hydroxyalkylgruppen oder Carboxyalkylgruppen noch 2,3-Dihydroxypropylgruppen enthalten
US4096326A (en) * 1976-10-13 1978-06-20 Hercules Incorporated Dihydroxypropyl cellulose
JPS6094401A (ja) * 1983-10-31 1985-05-27 Asahi Chem Ind Co Ltd 吸液特性のすぐれたセルロース誘導体およびその製造方法
DE3417952A1 (de) * 1984-05-15 1985-11-21 Hoechst Ag, 6230 Frankfurt Verfahren zur herstellung von wasserloeslichen cellulosemischethern
US4523010A (en) * 1984-06-15 1985-06-11 Hercules Incorporated Dihydroxypropyl mixed ether derivatives of cellulose
US4579942A (en) * 1984-09-26 1986-04-01 Union Carbide Corporation Polysaccharides, methods for preparing such polysaccharides and fluids utilizing such polysaccharides

Also Published As

Publication number Publication date
EP0539979B1 (de) 1997-01-15
JPH05117301A (ja) 1993-05-14
EP0539979A3 (en) 1993-09-08
DE69216756T2 (de) 1997-05-28
JP3002916B2 (ja) 2000-01-24
US5463037A (en) 1995-10-31
EP0539979A2 (de) 1993-05-05

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8331 Complete revocation