DD211790A5 - Verfahren zur herstellung von celluloseethern aus mit ammoniak aktivierter cellulose - Google Patents

Verfahren zur herstellung von celluloseethern aus mit ammoniak aktivierter cellulose Download PDF

Info

Publication number: DD211790A5
Authority: DD; German Democratic Republic
Prior art keywords: cellulose; ammonia; organic solvent; etherification; activated
Prior art date: 1982-11-11

Application number

DD83256547A

Other languages

German (de)

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.)

1982-11-11

Filing date

1983-11-10

Publication date

1984-07-25

1983-11-10 Application filed by Hoechst Ag filed Critical Hoechst Ag

1984-07-25 Publication of DD211790A5 publication Critical patent/DD211790A5/de

Links

229920002678 cellulose Polymers 0.000 title claims abstract description 80
239000001913 cellulose Substances 0.000 title claims abstract description 79
238000000034 method Methods 0.000 title claims abstract description 39
230000008569 process Effects 0.000 title claims abstract description 19
238000002360 preparation method Methods 0.000 title claims abstract description 16
229920003086 cellulose ether Polymers 0.000 title claims description 18
QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 84
229910021529 ammonia Inorganic materials 0.000 claims abstract description 36
239000003960 organic solvent Substances 0.000 claims abstract description 28
238000006266 etherification reaction Methods 0.000 claims abstract description 27
239000003795 chemical substances by application Substances 0.000 claims abstract description 23
230000004913 activation Effects 0.000 claims abstract description 19
239000003513 alkali Substances 0.000 claims abstract description 13
230000003113 alkalizing effect Effects 0.000 claims abstract description 6
125000004432 carbon atom Chemical group C* 0.000 claims abstract description 3
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 54
239000008186 active pharmaceutical agent Substances 0.000 claims description 9
VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract 1
235000010980 cellulose Nutrition 0.000 description 65
239000000243 solution Substances 0.000 description 27
238000006243 chemical reaction Methods 0.000 description 22
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 16
239000007795 chemical reaction product Substances 0.000 description 14
230000000052 comparative effect Effects 0.000 description 13
239000000203 mixture Substances 0.000 description 13
-1 aralkyl halides Chemical class 0.000 description 12
150000008044 alkali metal hydroxides Chemical class 0.000 description 7
239000002585 base Substances 0.000 description 7
UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
239000000835 fiber Substances 0.000 description 6
125000001424 substituent group Chemical group 0.000 description 6
238000006467 substitution reaction Methods 0.000 description 6
125000002887 hydroxy group Chemical group [H]O* 0.000 description 5
LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 4
DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 4
230000008859 change Effects 0.000 description 4
238000004090 dissolution Methods 0.000 description 4
238000002156 mixing Methods 0.000 description 4
239000000047 product Substances 0.000 description 4
ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
229920000663 Hydroxyethyl cellulose Polymers 0.000 description 3
229920002153 Hydroxypropyl cellulose Polymers 0.000 description 3
OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 3
230000009471 action Effects 0.000 description 3
229910052783 alkali metal Inorganic materials 0.000 description 3
150000001340 alkali metals Chemical class 0.000 description 3
239000007864 aqueous solution Substances 0.000 description 3
238000009835 boiling Methods 0.000 description 3
230000015556 catabolic process Effects 0.000 description 3
FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 description 3
238000006731 degradation reaction Methods 0.000 description 3
230000000694 effects Effects 0.000 description 3
238000005516 engineering process Methods 0.000 description 3
239000001863 hydroxypropyl cellulose Substances 0.000 description 3
235000010977 hydroxypropyl cellulose Nutrition 0.000 description 3
239000007788 liquid Substances 0.000 description 3
238000004519 manufacturing process Methods 0.000 description 3
229910052757 nitrogen Inorganic materials 0.000 description 3
239000002245 particle Substances 0.000 description 3
239000011541 reaction mixture Substances 0.000 description 3
150000003839 salts Chemical class 0.000 description 3
239000007787 solid Substances 0.000 description 3
239000002904 solvent Substances 0.000 description 3
238000003756 stirring Methods 0.000 description 3
CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
229920000742 Cotton Polymers 0.000 description 2
RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
229920000896 Ethulose Polymers 0.000 description 2
239000001859 Ethyl hydroxyethyl cellulose Substances 0.000 description 2
ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 description 2
WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 2
YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 2
WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
230000003213 activating effect Effects 0.000 description 2
239000000654 additive Substances 0.000 description 2
229910001854 alkali hydroxide Inorganic materials 0.000 description 2
125000000217 alkyl group Chemical group 0.000 description 2
150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 2
239000000470 constituent Substances 0.000 description 2
238000009826 distribution Methods 0.000 description 2
125000001033 ether group Chemical group 0.000 description 2
235000019326 ethyl hydroxyethyl cellulose Nutrition 0.000 description 2
238000011156 evaluation Methods 0.000 description 2
238000001704 evaporation Methods 0.000 description 2
230000008020 evaporation Effects 0.000 description 2
239000012467 final product Substances 0.000 description 2
LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 2
229920000609 methyl cellulose Polymers 0.000 description 2
239000001923 methylcellulose Substances 0.000 description 2
238000006386 neutralization reaction Methods 0.000 description 2
WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 2
125000001453 quaternary ammonium group Chemical group 0.000 description 2
150000003254 radicals Chemical class 0.000 description 2
FDRCDNZGSXJAFP-UHFFFAOYSA-M sodium chloroacetate Chemical compound [Na+].[O-]C(=O)CCl FDRCDNZGSXJAFP-UHFFFAOYSA-M 0.000 description 2
239000000725 suspension Substances 0.000 description 2
RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
KXJGSNRAQWDDJT-UHFFFAOYSA-N 1-acetyl-5-bromo-2h-indol-3-one Chemical compound BrC1=CC=C2N(C(=O)C)CC(=O)C2=C1 KXJGSNRAQWDDJT-UHFFFAOYSA-N 0.000 description 1
HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
125000001731 2-cyanoethyl group Chemical group [H]C([H])(*)C([H])([H])C#N 0.000 description 1
VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
229920001425 Diethylaminoethyl cellulose Polymers 0.000 description 1
239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
229920001131 Pulp (paper) Polymers 0.000 description 1
238000006959 Williamson synthesis reaction Methods 0.000 description 1
239000002253 acid Substances 0.000 description 1
239000000853 adhesive Substances 0.000 description 1
230000001070 adhesive effect Effects 0.000 description 1
150000001298 alcohols Chemical class 0.000 description 1
150000001335 aliphatic alkanes Chemical class 0.000 description 1
150000001348 alkyl chlorides Chemical class 0.000 description 1
125000002947 alkylene group Chemical group 0.000 description 1
150000001412 amines Chemical class 0.000 description 1
235000011114 ammonium hydroxide Nutrition 0.000 description 1
239000003963 antioxidant agent Substances 0.000 description 1
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
238000010533 azeotropic distillation Methods 0.000 description 1
239000012267 brine Substances 0.000 description 1
GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
229910052794 bromium Inorganic materials 0.000 description 1
239000004566 building material Substances 0.000 description 1
239000006227 byproduct Substances 0.000 description 1
229910052799 carbon Inorganic materials 0.000 description 1
239000001768 carboxy methyl cellulose Substances 0.000 description 1
235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
239000008112 carboxymethyl-cellulose Substances 0.000 description 1
230000003197 catalytic effect Effects 0.000 description 1
239000003153 chemical reaction reagent Substances 0.000 description 1
239000000460 chlorine Substances 0.000 description 1
229910052801 chlorine Inorganic materials 0.000 description 1
238000001816 cooling Methods 0.000 description 1
239000012043 crude product Substances 0.000 description 1
239000007857 degradation product Substances 0.000 description 1
238000001035 drying Methods 0.000 description 1
230000032050 esterification Effects 0.000 description 1
238000005886 esterification reaction Methods 0.000 description 1
150000002148 esters Chemical class 0.000 description 1
150000002170 ethers Chemical class 0.000 description 1
229940093476 ethylene glycol Drugs 0.000 description 1
238000000605 extraction Methods 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
229940074391 gallic acid Drugs 0.000 description 1
235000004515 gallic acid Nutrition 0.000 description 1
150000004676 glycans Chemical class 0.000 description 1
238000000227 grinding Methods 0.000 description 1
239000001257 hydrogen Substances 0.000 description 1
229910052739 hydrogen Inorganic materials 0.000 description 1
125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
230000007062 hydrolysis Effects 0.000 description 1
238000006460 hydrolysis reaction Methods 0.000 description 1
125000002768 hydroxyalkyl group Chemical group 0.000 description 1
235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
230000006872 improvement Effects 0.000 description 1
239000011261 inert gas Substances 0.000 description 1
239000002198 insoluble material Substances 0.000 description 1
238000011835 investigation Methods 0.000 description 1
150000002576 ketones Chemical class 0.000 description 1
229940050176 methyl chloride Drugs 0.000 description 1
239000001301 oxygen Substances 0.000 description 1
229910052760 oxygen Inorganic materials 0.000 description 1
229920000642 polymer Polymers 0.000 description 1
229920001282 polysaccharide Polymers 0.000 description 1
239000005017 polysaccharide Substances 0.000 description 1
239000000843 powder Substances 0.000 description 1
238000000746 purification Methods 0.000 description 1
229940079877 pyrogallol Drugs 0.000 description 1
239000000376 reactant Substances 0.000 description 1
230000009257 reactivity Effects 0.000 description 1
230000009467 reduction Effects 0.000 description 1
238000007670 refining Methods 0.000 description 1
238000010992 reflux Methods 0.000 description 1
HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
239000004753 textile Substances 0.000 description 1
239000002562 thickening agent Substances 0.000 description 1
238000010626 work up procedure Methods 0.000 description 1

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)

DD83256547A 1982-11-11 1983-11-10 Verfahren zur herstellung von celluloseethern aus mit ammoniak aktivierter cellulose DD211790A5 (de)

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
DD211790A5 true DD211790A5 (de)	1984-07-25

Family

ID=6177868

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DD83256547A DD211790A5 (de)	1982-11-11	1983-11-10	Verfahren zur herstellung von celluloseethern aus mit ammoniak aktivierter cellulose

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
JP3390015B2 (ja) *	1995-03-25	2003-03-24	ローネ−ポウレンクローディアアクチェンゲゼルシャフト	活性化しているポリサッカライドを得るためのプロセス、このプロセスによって作られるポリサッカライドおよびそれらの使用方法
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
EP1334132A1 (en) *	2000-11-01	2003-08-13	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
WO2019111939A1 (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
WO2019111934A1 (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
US11591412B2 (en)	2017-12-07	2023-02-28	Nippon Paper Industries Co., Ltd.	Carboxymethylated cellulose nanofibers
EP3722327B1 (en) *	2017-12-07	2022-11-02	Nippon Paper Industries Co., Ltd.	Method for manufacturing carboxymethylated cellulose nanofiber

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA546633A (en) *		1957-09-24	R. Grassie Vernon	Alkali cellulose preparation
US1682294A (en) *		1928-08-28		chemistry
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 AT AT83110871T patent/ATE21397T1/de active
- 1983-10-31 JP JP58202916A patent/JPS5996101A/ja active Pending
- 1983-10-31 DE DE8383110871T patent/DE3365338D1/de not_active Expired
- 1983-10-31 EP EP83110871A patent/EP0108991B1/de not_active Expired
- 1983-11-09 FI FI834117A patent/FI74025C/fi not_active IP Right Cessation
- 1983-11-10 DD DD83256547A patent/DD211790A5/de unknown
- 1983-11-10 BR BR8306178A patent/BR8306178A/pt unknown

Also Published As

Publication number	Publication date
FI74025B (fi)	1987-08-31
EP0108991B1 (de)	1986-08-13
ATE21397T1 (de)	1986-08-15
FI834117L (fi)	1984-05-12
EP0108991A1 (de)	1984-05-23
CA1194863A (en)	1985-10-08
FI834117A0 (fi)	1983-11-09
FI74025C (fi)	1987-12-10
DE3241720A1 (de)	1984-05-17
DE3365338D1 (en)	1986-09-18
JPS5996101A (ja)	1984-06-02
US4491661A (en)	1985-01-01
BR8306178A (pt)	1984-07-31

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EP0080678B1 (de)	1988-01-20	Verfahren zur Herstellung von wasserlöslichen Celluloseethern mit Dimethoxyethan als Dispergierhilfsmittel
EP0161607B1 (de)	1991-05-29	Verfahren zur Herstellung von wasserlöslichen Cellulosemischethern
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EP1180526B1 (de)	2003-10-08	Verfahren zur Herstellung von Alkylhydroxyalkylcellulose
EP0108991B1 (de)	1986-08-13	Verfahren zur Herstellung von Celluloseethern aus mit Ammoniak aktivierter Cellulose
DE2412014B2 (de)	1978-07-13	Nichtionische Celluloseäther und Verfahren zu deren Herstellung
EP1279680A2 (de)	2003-01-29	Verfahren zur Herstellung von Alkylhydroxyalkylcellulose
EP0023292A1 (de)	1981-02-04	Verfahren zur Herstellung von Cellulosederivaten mittels besonders reaktiver Alkalicellulose
EP0117490B1 (de)	1987-01-28	Verfahren zur Herstellung von Celluloseethern mit einem Dimethoxyethan enthaltenden Dispergierhilfsmittel
EP0105231B1 (de)	1987-03-25	Verfahren zur Veretherung von Cellulose mit Monochloressigsäurealkylestern
DE2415155C2 (de)	1985-05-23	Verfahren zur Herstellung von 2,3-Dihydroxypropylcellulose
DE102004019296B4 (de)	2006-01-05	Verfahren zur Herstellung von Methylhydroxyalkylcellulose
EP0825199B1 (de)	2002-03-06	Verfahren zur Herstellung von wasserlöslichen Celluloseethern unter Rückgewinnung von Natriumhydroxid
DE102004035869A1 (de)	2006-03-16	Verfahren zur Herstellung von aminogruppenhaltigen Cellulosederivaten sowie deren Verwendung in kosmetischen Zubereitungen der Wasseraufbereitung und der Papierherstellung
DE19940393C1 (de)	2001-03-22	Verfahren zur Herstellung von alkalilöslichem Cellulosecarbamat
DE3246676A1 (de)	1984-06-20	Verfahren zur herstellung von wasserloeslicher natriumcarboxymethylcellulose
EP0598282A1 (de)	1994-05-25	Methylhydroxyalkylcelluloseether als Verdickungsmittel für Abbeizer
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