ATE240974T1 - Verfahren zur herstellung von celluloseethern mit verminderter vergilbung und verfärbung - Google Patents

Verfahren zur herstellung von celluloseethern mit verminderter vergilbung und verfärbung

Info

Publication number
ATE240974T1
ATE240974T1 AT00936349T AT00936349T ATE240974T1 AT E240974 T1 ATE240974 T1 AT E240974T1 AT 00936349 T AT00936349 T AT 00936349T AT 00936349 T AT00936349 T AT 00936349T AT E240974 T1 ATE240974 T1 AT E240974T1
Authority
AT
Austria
Prior art keywords
cellulose ether
molecular weight
discoloring
cellulose ethers
reduced yellowing
Prior art date
Application number
AT00936349T
Other languages
English (en)
Inventor
Steven Rosenberg
Michael V Spencer
Gary J Schulz
Original Assignee
Dow Global Technologies Inc
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=26838741&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE240974(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dow Global Technologies Inc filed Critical Dow Global Technologies Inc
Application granted granted Critical
Publication of ATE240974T1 publication Critical patent/ATE240974T1/de

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
    • 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
    • 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
    • C08B11/02—Alkyl or cycloalkyl ethers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Medicinal Preparation (AREA)
  • General Preparation And Processing Of Foods (AREA)
AT00936349T 1999-06-24 2000-05-26 Verfahren zur herstellung von celluloseethern mit verminderter vergilbung und verfärbung ATE240974T1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US14104699P 1999-06-24 1999-06-24
US09/416,783 US6306333B1 (en) 1999-06-24 1999-10-13 Process for making cellulose ethers having reduced yellowing and discoloration
PCT/US2000/014622 WO2001000680A1 (en) 1999-06-24 2000-05-26 Process for making cellulose ethers having reduced yellowing and discoloration

Publications (1)

Publication Number Publication Date
ATE240974T1 true ATE240974T1 (de) 2003-06-15

Family

ID=26838741

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00936349T ATE240974T1 (de) 1999-06-24 2000-05-26 Verfahren zur herstellung von celluloseethern mit verminderter vergilbung und verfärbung

Country Status (11)

Country Link
US (1) US6306333B1 (de)
EP (1) EP1194452B1 (de)
JP (1) JP5236849B2 (de)
KR (1) KR100662225B1 (de)
CN (1) CN1146578C (de)
AT (1) ATE240974T1 (de)
AU (1) AU5167300A (de)
DE (1) DE60002871T2 (de)
ES (1) ES2193963T3 (de)
MX (1) MXPA01012909A (de)
WO (1) WO2001000680A1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6820570B2 (en) 2001-08-15 2004-11-23 Nobel Biocare Services Ag Atomic layer deposition reactor
US7172886B2 (en) * 2001-12-06 2007-02-06 The Regents Of The University Of California Biosynthesis of isopentenyl pyrophosphate
US20040142558A1 (en) 2002-12-05 2004-07-22 Granneman Ernst H. A. Apparatus and method for atomic layer deposition on substrates
US7601223B2 (en) 2003-04-29 2009-10-13 Asm International N.V. Showerhead assembly and ALD methods
US7537662B2 (en) 2003-04-29 2009-05-26 Asm International N.V. Method and apparatus for depositing thin films on a surface
JP2005187376A (ja) * 2003-12-25 2005-07-14 Shin Etsu Chem Co Ltd 低置換度セルロースエーテル含有カプセル及びその製造方法
US8865432B2 (en) * 2004-02-26 2014-10-21 Shin-Etsu Chemical Co., Ltd. Method for preparing cellulose derivatives having solubility improved
WO2005118649A1 (en) * 2004-05-26 2005-12-15 Dow Global Technologies Inc. Production of low molecular weight ethylcellulose
KR101156365B1 (ko) * 2005-08-12 2012-06-13 신에쓰 가가꾸 고교 가부시끼가이샤 용해성이 개선된 셀룰로오스 유도체의 제조 방법
ATE519785T1 (de) * 2006-06-14 2011-08-15 Dow Global Technologies Llc Verfahren zur verringerung des mittleren molekulargewichts von celluloseethern
EP2220157B1 (de) * 2007-11-09 2016-08-17 Dow Global Technologies LLC Zelluloseether-beschichtungszusammensetzungen und entsprechendes verfahren
KR101586136B1 (ko) * 2013-01-09 2016-01-15 신에쓰 가가꾸 고교 가부시끼가이샤 저중합도 셀룰로오스에테르의 제조 방법 및 이에 따라 제조된 셀룰로오스에테르
US9926385B2 (en) 2013-08-12 2018-03-27 Shin-Etsu Chemical Co., Ltd. Method for producing water-soluble cellulose ether having low degree of polymerization and method for producing film coating composition comprising same
KR102373750B1 (ko) 2016-10-06 2022-03-15 신에쓰 가가꾸 고교 가부시끼가이샤 저중합도 셀룰로오스 에테르의 제조 방법
EP3668901B1 (de) * 2017-08-16 2021-05-05 Nutrition & Biosciences USA 1, LLC Verfahren zur kontrollierten herstellung von niedermolekularen celluloseethern

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4841037B1 (de) 1964-10-26 1973-12-04
JPS4830469B1 (de) * 1969-09-04 1973-09-20
US4048433A (en) 1976-02-02 1977-09-13 The Procter & Gamble Company Cellulose ethers having a low molecular weight and a high degree of methyl substitution
US4061859A (en) * 1976-06-14 1977-12-06 The Dow Chemical Company Viscosity reduction of cellulose derivatives
JPS6225101A (ja) 1985-07-24 1987-02-03 Shin Etsu Chem Co Ltd 低重合度セルロ−スエ−テルの製造方法
CA2071488C (en) * 1990-08-24 1996-05-07 Kazuto Kobayashi Base for film-coating pharmaceuticals and method for preparing same
US5476668A (en) * 1990-08-24 1995-12-19 Shin-Etsu Chemical Co., Ltd. Base for film-coating pharmaceuticals and method for preparing same
DE69232423T2 (de) * 1991-05-31 2002-10-10 R.P. Scherer Technologies, Inc. Verfahren und Vorrichtung zum Herstellen von pharmazeutischen Zellulosekapseln - die Kapsel trocknend
TR27111A (tr) * 1992-06-06 1994-11-09 Hoechst Ag Sulfoakil grubu ihtiva eden alkilhidroksialkil selüloz eterleri.
JP3522002B2 (ja) * 1995-05-12 2004-04-26 信越化学工業株式会社 低重合度セルロースエーテルの製造方法
JPH1017701A (ja) * 1996-07-05 1998-01-20 Daicel Chem Ind Ltd セルロース誘導体の分解方法
FR2757173A1 (fr) 1996-12-17 1998-06-19 Warner Lambert Co Compositions polymeres d'origine non-animale pour la formation de films
JP3212534B2 (ja) * 1997-04-08 2001-09-25 信越化学工業株式会社 低置換度ヒドロキシプロピルセルロース粉末

Also Published As

Publication number Publication date
JP5236849B2 (ja) 2013-07-17
DE60002871D1 (de) 2003-06-26
KR100662225B1 (ko) 2007-01-02
AU5167300A (en) 2001-01-31
ES2193963T3 (es) 2003-11-16
MXPA01012909A (es) 2002-07-30
US6306333B1 (en) 2001-10-23
CN1353720A (zh) 2002-06-12
WO2001000680A1 (en) 2001-01-04
JP2003503557A (ja) 2003-01-28
EP1194452A1 (de) 2002-04-10
EP1194452B1 (de) 2003-05-21
CN1146578C (zh) 2004-04-21
KR20020016847A (ko) 2002-03-06
DE60002871T2 (de) 2004-03-11

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