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BR8306178A - Processo para a preparacao de eteres de celulose hidrossoluveis - Google Patents

Processo para a preparacao de eteres de celulose hidrossoluveis

Info

Publication number
BR8306178A
BR8306178A BR8306178A BR8306178A BR8306178A BR 8306178 A BR8306178 A BR 8306178A BR 8306178 A BR8306178 A BR 8306178A BR 8306178 A BR8306178 A BR 8306178A BR 8306178 A BR8306178 A BR 8306178A
Authority
BR
Brazil
Prior art keywords
cellulose
organic solvent
preparation
water
ammonia
Prior art date
Application number
BR8306178A
Other languages
English (en)
Inventor
Karl Bredereck
Emy Togelang
Original Assignee
Hoechst Ag
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
Application filed by Hoechst Ag filed Critical Hoechst Ag
Publication of BR8306178A publication Critical patent/BR8306178A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C08B1/08—Alkali cellulose
    • 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

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)
  • Investigating Or Analysing Biological Materials (AREA)
BR8306178A 1982-11-11 1983-11-10 Processo para a preparacao de eteres de celulose hidrossoluveis BR8306178A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823241720 DE3241720A1 (de) 1982-11-11 1982-11-11 Verfahren zur herstellung von celluloseethern aus mit ammoniak aktivierter cellulose

Publications (1)

Publication Number Publication Date
BR8306178A true BR8306178A (pt) 1984-07-31

Family

ID=6177868

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8306178A BR8306178A (pt) 1982-11-11 1983-11-10 Processo para a preparacao de eteres de celulose hidrossoluveis

Country Status (9)

Country Link
US (1) US4491661A (pt)
EP (1) EP0108991B1 (pt)
JP (1) JPS5996101A (pt)
AT (1) ATE21397T1 (pt)
BR (1) BR8306178A (pt)
CA (1) CA1194863A (pt)
DD (1) DD211790A5 (pt)
DE (2) DE3241720A1 (pt)
FI (1) FI74025C (pt)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4329937C1 (de) * 1993-09-04 1994-11-24 Rhodia Ag Rhone Poulenc Verfahren zur Behandlung von Cellulose zu deren Aktivierung für nachfolgende chemische Reaktionen
WO1996030411A1 (de) * 1995-03-25 1996-10-03 Rhone-Poulenc Rhodia Aktiengesellschaft Verfahren zur aktivierung von polysacchariden, danach hergestellte polysaccharide und deren verwendung
DE19646213C2 (de) * 1996-11-08 1999-02-18 Rhodia Acetow Ag Verfahren zur Herstellung von Cellulosederivaten
FR2762603B1 (fr) * 1997-04-25 1999-07-16 Rhodia Ag Rhone Poulenc Cellulose reactive et procede de fabrication de cette cellulose
US6686464B1 (en) * 1999-04-26 2004-02-03 Bki Holding Corporation Cellulose ethers and method of preparing the same
JP4195289B2 (ja) 2000-11-01 2008-12-10 ビーケイアイ・ホールディング・コーポレーション セルロースエーテル及びその製造方法
JP2004026861A (ja) * 2002-06-21 2004-01-29 Shin Etsu Chem Co Ltd 濾過性に優れる水溶性セルロースエーテル及びその選定方法
EP1764373B1 (de) * 2005-09-17 2016-04-27 Dow Global Technologies LLC Verfahren zur Herstellung von Methylhydroxyalkylcellulose mit einer geringen Anzahl gefärbter Partikel
US8519120B2 (en) 2006-08-08 2013-08-27 Shin-Etsu Chemical Co., Ltd. Methods for producing a low-substituted hydroxypropylcellulose powder
CN111448218B (zh) 2017-12-07 2023-05-05 日本制纸株式会社 羧甲基化纤维素纳米纤维
WO2019111933A1 (ja) * 2017-12-07 2019-06-13 日本製紙株式会社 カルボキシメチル化セルロース及びカルボキシメチル化セルロースナノファイバーの製造方法
EP3722326A4 (en) 2017-12-07 2021-11-10 Nippon Paper Industries Co., Ltd. CARBOXYMETHYLATED CELLULOSE
CN111465620B (zh) 2017-12-07 2023-03-28 日本制纸株式会社 羧甲基化纤维素纳米纤维

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1682294A (en) * 1928-08-28 chemistry
CA546633A (en) * 1957-09-24 R. Grassie Vernon Alkali cellulose preparation
US2290888A (en) * 1932-01-30 1942-07-28 North American Rayon Corp Cellulose activated by liquid ammonia
GB463056A (en) * 1934-09-19 1937-03-19 Du Pont Improvements in or relating to the production of alkali cellulose particularly useful for making cellulose esters or ethers
US2110526A (en) * 1937-01-09 1938-03-08 Hercules Powder Co Ltd Method for the preparation of cellulose ethers
US2294924A (en) * 1937-11-30 1942-09-08 North American Rayon Corp Treatment of cellulose with alkali metal amides in anhydrous liquid ammonia
US2157083A (en) * 1938-01-29 1939-05-02 Dow Chemical Co Preparation of cellulose ethers
US2145273A (en) * 1938-01-29 1939-01-31 Dow Chemical Co Preparation of cellulose ethers
US2294925A (en) * 1939-03-29 1942-09-08 Clemmy O Miller Manufacture of reactive forms of cellulose and the like
US2308692A (en) * 1941-03-06 1943-01-19 Dow Chemical Co Greaseproof paper
US2296829A (en) * 1941-03-22 1942-09-29 Dow Chemical Co Making alkali cellulose of low water content
US2671780A (en) * 1948-08-31 1954-03-09 Univ Ohio State Res Found Processes for the preparation of new carbohydrate compounds and products thereof
US2729535A (en) * 1949-06-22 1956-01-03 Balassa Leslie L Process of making alkali-insoluble cellulose glycolic acid ether fabric
US3069409A (en) * 1958-06-12 1962-12-18 Hercules Powder Co Ltd Process of preparing carboxyalkyl cellulose ethers

Also Published As

Publication number Publication date
DE3241720A1 (de) 1984-05-17
JPS5996101A (ja) 1984-06-02
DE3365338D1 (en) 1986-09-18
ATE21397T1 (de) 1986-08-15
FI834117A0 (fi) 1983-11-09
FI74025C (fi) 1987-12-10
FI834117L (fi) 1984-05-12
FI74025B (fi) 1987-08-31
DD211790A5 (de) 1984-07-25
EP0108991A1 (de) 1984-05-23
EP0108991B1 (de) 1986-08-13
US4491661A (en) 1985-01-01
CA1194863A (en) 1985-10-08

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