FI834117A - Foerfarande foer framstaellning av cellulosaetrar ur med ammoniak aktiverad cellulosa - Google Patents

Foerfarande foer framstaellning av cellulosaetrar ur med ammoniak aktiverad cellulosa Download PDF

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Publication number
FI834117A
FI834117A FI834117A FI834117A FI834117A FI 834117 A FI834117 A FI 834117A FI 834117 A FI834117 A FI 834117A FI 834117 A FI834117 A FI 834117A FI 834117 A FI834117 A FI 834117A
Authority
FI
Finland
Prior art keywords
cellulose
organic solvent
ammonia
activation
optionally
Prior art date
Application number
FI834117A
Other languages
English (en)
Other versions
FI74025C (fi
FI834117A0 (fi
FI74025B (fi
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 FI834117A0 publication Critical patent/FI834117A0/fi
Publication of FI834117A publication Critical patent/FI834117A/fi
Application granted granted Critical
Publication of FI74025B publication Critical patent/FI74025B/fi
Publication of FI74025C publication Critical patent/FI74025C/fi

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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
FI834117A 1982-11-11 1983-11-09 Foerfarande foer framstaellning av cellulosaetrar ur med ammoniak aktiverad cellulosa. FI74025C (fi)

Applications Claiming Priority (2)

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
DE3241720 1982-11-11

Publications (4)

Publication Number Publication Date
FI834117A0 FI834117A0 (fi) 1983-11-09
FI834117A true FI834117A (fi) 1984-05-12
FI74025B FI74025B (fi) 1987-08-31
FI74025C FI74025C (fi) 1987-12-10

Family

ID=6177868

Family Applications (1)

Application Number Title Priority Date Filing Date
FI834117A FI74025C (fi) 1982-11-11 1983-11-09 Foerfarande foer framstaellning av cellulosaetrar ur med ammoniak aktiverad cellulosa.

Country Status (9)

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

Families Citing this family (12)

* 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
US7022837B2 (en) 2000-11-01 2006-04-04 Bki Holding Corporation Cellulose ethers and method of preparing the same
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
EP3722324A4 (en) 2017-12-07 2021-09-29 Nippon Paper Industries Co., Ltd. CARBOXYMETHYLATED CELLULOSE NANOFIBERS
KR20200092398A (ko) 2017-12-07 2020-08-03 니뽄 세이시 가부시끼가이샤 카르복시메틸화 셀룰로오스
WO2019111928A1 (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ナノファイバーの製造方法

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
US2145273A (en) * 1938-01-29 1939-01-31 Dow Chemical Co Preparation of cellulose ethers
US2157083A (en) * 1938-01-29 1939-05-02 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
FI74025C (fi) 1987-12-10
EP0108991A1 (de) 1984-05-23
JPS5996101A (ja) 1984-06-02
ATE21397T1 (de) 1986-08-15
CA1194863A (en) 1985-10-08
FI834117A0 (fi) 1983-11-09
EP0108991B1 (de) 1986-08-13
US4491661A (en) 1985-01-01
FI74025B (fi) 1987-08-31
DE3241720A1 (de) 1984-05-17
BR8306178A (pt) 1984-07-31
DD211790A5 (de) 1984-07-25
DE3365338D1 (en) 1986-09-18

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Legal Events

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MM Patent lapsed

Owner name: HOECHST AKTIENGESELLSCHAFT