FI834117A0 - Foerfarande foer framstaellning av cellulosaetrar ur med ammoniak aktiverad cellulosa - Google Patents

Foerfarande foer framstaellning av cellulosaetrar ur med ammoniak aktiverad cellulosa

Info

Publication number: FI834117A0
Authority: FI; Finland
Prior art keywords: cellulose; organic solvent; ammonia; activation; optionally
Prior art date: 1982-11-11

Application number

FI834117A

Other languages

English (en)

Other versions

FI74025C (fi

FI834117L (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.)

1982-11-11

Filing date

1983-11-09

Publication date

1983-11-09

1983-11-09 Application filed by Hoechst Ag filed Critical Hoechst Ag

1983-11-09 Publication of FI834117A0 publication Critical patent/FI834117A0/fi

1984-05-12 Publication of FI834117L publication Critical patent/FI834117L/fi

1987-08-31 Application granted granted Critical

1987-08-31 Publication of FI74025B publication Critical patent/FI74025B/fi

1987-12-10 Publication of FI74025C publication Critical patent/FI74025C/fi

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)

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 true FI834117A0 (fi)	1983-11-09
FI834117L FI834117L (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 (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
EA000169B1 (ru) *	1995-03-25	1998-10-29	Рон-Пуленк Родиа Акциенгезелльшафт	Способ активации полисахаридов, получаемые согласно этому способу полисахариды и их применение
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
CN1312184C (zh)	2000-11-01	2007-04-25	Bki控股公司	纤维素醚及其制备方法
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
CN111448219A (zh)	2017-12-07	2020-07-24	日本制纸株式会社	羧甲基化纤维素
EP3722328A4 (en)	2017-12-07	2021-11-10	Nippon Paper Industries Co., Ltd.	CARBOXYMETHYLATED CELLULOSE NANOFIBERS
ES2930142T3 (es) *	2017-12-07	2022-12-07	Jujo Paper Co Ltd	Método para la fabricación de nanofibra de celulosa caboximetilada
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

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

1982
- 1982-11-11 DE DE19823241720 patent/DE3241720A1/de not_active Withdrawn
1983
- 1983-10-26 CA CA000439735A patent/CA1194863A/en not_active Expired
- 1983-10-27 US US06/546,044 patent/US4491661A/en not_active Expired - Fee Related
- 1983-10-31 DE DE8383110871T patent/DE3365338D1/de not_active Expired
- 1983-10-31 EP EP83110871A patent/EP0108991B1/de not_active Expired
- 1983-10-31 AT AT83110871T patent/ATE21397T1/de active
- 1983-10-31 JP JP58202916A patent/JPS5996101A/ja active Pending
- 1983-11-09 FI FI834117A patent/FI74025C/fi not_active IP Right Cessation
- 1983-11-10 BR BR8306178A patent/BR8306178A/pt unknown
- 1983-11-10 DD DD83256547A patent/DD211790A5/de unknown

Also Published As

Publication number	Publication date
BR8306178A (pt)	1984-07-31
FI74025C (fi)	1987-12-10
DD211790A5 (de)	1984-07-25
CA1194863A (en)	1985-10-08
FI834117L (fi)	1984-05-12
EP0108991A1 (de)	1984-05-23
DE3365338D1 (en)	1986-09-18
US4491661A (en)	1985-01-01
FI74025B (fi)	1987-08-31
DE3241720A1 (de)	1984-05-17
EP0108991B1 (de)	1986-08-13
ATE21397T1 (de)	1986-08-15
JPS5996101A (ja)	1984-06-02

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Legal Events

Date	Code	Title	Description
2004-08-31	MM	Patent lapsed	Owner name: HOECHST AKTIENGESELLSCHAFT