ES8502448A1 - Un procedimiento para la preparacion de eteres mixtos de celulosa - Google Patents

Un procedimiento para la preparacion de eteres mixtos de celulosa

Info

Publication number
ES8502448A1
ES8502448A1 ES532118A ES532118A ES8502448A1 ES 8502448 A1 ES8502448 A1 ES 8502448A1 ES 532118 A ES532118 A ES 532118A ES 532118 A ES532118 A ES 532118A ES 8502448 A1 ES8502448 A1 ES 8502448A1
Authority
ES
Spain
Prior art keywords
cellulose
base
water
etherifying
steps
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES532118A
Other languages
English (en)
Other versions
ES532118A0 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoechst AG
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 ES532118A0 publication Critical patent/ES532118A0/es
Publication of ES8502448A1 publication Critical patent/ES8502448A1/es
Expired legal-status Critical Current

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
    • C08B11/193—Mixed ethers, i.e. ethers with two or more different etherifying groups

Abstract

PROCEDIMIENTO PARA LA PREPARACION DE ETERES MIXTOS DE CELULOSA.CONSTA DE: A) ALCALINIZACION DE LA CELULOSA; B) ETERIFICACION DE LA CELULOSA ALCALINA EN PRESENCIA DE UNA BASE, EMPLEANDO UN AGENTE ETERIFICANTE QUE REQUIERE, PARA LA REACCION CON CELULOSA, UNA CANTIDAD CATALITICA Y SUB-ESTEQUIOMETRICA DE UNA BASE; Y C) AUMENTAR LA CANTIDAD DE BASE, ETERIFICACION POSTERIOR DEL ETER CELULOSICO ASI PREPARADO, EMPLEANTE UN AGENTE ETERIFICANTE QUE RQEUIERE, PARA LA REACCION CON LA CELULOSA UNA CANTIDAD ESTEQUIOMETRICA DE UNA BASE O UNA CANTIDAD CATALITICA Y SUB-ESTEQUIOMETRICA DE UNA BASE QUE ES SUPERIOR A LA CANTIDAD UTILIZADA EN (A). SE EMPLEA UN DISOLVENTE ORGANICO INERTE COMO AUXILIAR DE DISPERSION EN UNA DE LAS ETAPAS Y AGUA EN TODAS LAS ETAPAS.
ES532118A 1983-05-03 1984-05-02 Un procedimiento para la preparacion de eteres mixtos de celulosa Expired ES8502448A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833316124 DE3316124A1 (de) 1983-05-03 1983-05-03 Verfahren zur herstellung von wasserloeslichen cellulosemischethern

Publications (2)

Publication Number Publication Date
ES532118A0 ES532118A0 (es) 1985-01-01
ES8502448A1 true ES8502448A1 (es) 1985-01-01

Family

ID=6198031

Family Applications (1)

Application Number Title Priority Date Filing Date
ES532118A Expired ES8502448A1 (es) 1983-05-03 1984-05-02 Un procedimiento para la preparacion de eteres mixtos de celulosa

Country Status (9)

Country Link
US (1) US4550161A (es)
EP (1) EP0126959B1 (es)
JP (1) JPH0655763B2 (es)
AT (1) ATE32901T1 (es)
BR (1) BR8402053A (es)
CA (1) CA1206962A (es)
DE (2) DE3316124A1 (es)
ES (1) ES8502448A1 (es)
FI (1) FI74712C (es)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3417952A1 (de) * 1984-05-15 1985-11-21 Hoechst Ag, 6230 Frankfurt Verfahren zur herstellung von wasserloeslichen cellulosemischethern
JPH0816046B2 (ja) * 1987-03-09 1996-02-21 信越化学工業株式会社 化粧品用原材料物質
DE4015158A1 (de) * 1990-05-11 1991-11-14 Wolff Walsrode Ag Alkenylmethylhydroxypropylcelluloseether und ein verfahren zu ihrer herstellung
DE4024968A1 (de) * 1990-08-07 1992-07-09 Wolff Walsrode Ag Dihydroxypropylsulfoethylcellulosen, ihre herstellung und verwendung
DE4037605A1 (de) * 1990-11-27 1992-06-04 Wolff Walsrode Ag Wasserloesliche hydroxypropyl-sulfoethyl-cellulosederivate (hpsec) mit niedrigem substitutionsgrad und verfahren zu ihrer herstellung
JPH10251131A (ja) * 1997-03-11 1998-09-22 Sunstar Inc 口腔用組成物
DE19746264A1 (de) 1997-10-20 1999-04-29 Wolff Walsrode Ag Verfahren zur Herstellung einer Carboxymethylcellulose mit verbesserter Wasserretention
US6261218B1 (en) * 1998-12-01 2001-07-17 The Dow Chemical Company Process and apparatus for making low molecular weight cellulose ethers
WO2000059947A1 (en) * 1999-04-01 2000-10-12 The Dow Chemical Company Enhanced gel strength methylcellulose
US7005515B2 (en) 2001-05-21 2006-02-28 Dow Global Technologies Inc. Process for preparing alkyl hydroxyalkyl cellulose ethers
SE520715C2 (sv) * 2001-12-03 2003-08-12 Akzo Nobel Nv Förfarande för framställning av metylcellulosaetrar
DE10233788A1 (de) † 2002-07-25 2004-02-05 Wolff Cellulosics Gmbh & Co. Kg Cellulosederivate mit gel-artigen rheologischen Eigenschaften und Verfahren zur Herstellung derselben
DE102004019296B4 (de) * 2004-04-21 2006-01-05 Wolff Cellulosics Gmbh & Co. Kg Verfahren zur Herstellung von Methylhydroxyalkylcellulose
CN101003577B (zh) * 2006-01-20 2010-12-22 上海长光企业发展有限公司 一种高取代度聚阴离子纤维素生产工艺
JP2010516830A (ja) * 2007-01-22 2010-05-20 アクゾ ノーベル ナムローゼ フェンノートシャップ セルロースエーテルの製造法
US20080262216A1 (en) * 2007-04-20 2008-10-23 Shin-Etsu Chemical Co., Ltd. Hydroxyalkyl methylcellulose having solubility and thermoreversible gelation properties improved
CN101455286B (zh) * 2008-04-03 2011-07-06 上海长光企业发展有限公司 一种食品用羧甲基纤维素钠的制备方法
CN101602938B (zh) * 2009-07-13 2012-11-28 北京理工大学 一种纤维素基钻井液降滤失剂的制备方法
JP5586186B2 (ja) * 2009-08-06 2014-09-10 株式会社プレックス アルカリセルロースまたはその誘導体の製造方法。
BR112012014239A2 (pt) * 2009-12-16 2016-06-14 Union Carbide Chem Plastic composição para cuidado pessoal
CN103261233B (zh) 2010-10-12 2016-05-25 陶氏环球技术有限责任公司 新的纤维素醚以及它们的用途
PL2627675T3 (pl) 2010-10-12 2017-11-30 Dow Global Technologies Llc Nowe etery celulozy i ich zastosowanie
CN102863544B (zh) * 2012-09-25 2014-08-20 上海同化新材料科技有限公司 粘度为50～80毫帕·秒的粘结剂的制备方法及粘结剂及其应用

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB734924A (en) * 1951-03-31 1955-08-10 Hercules Powder Co Ltd Improvements in or relating to modified ethyl cellulose and its method of preparation
GB833834A (en) * 1958-02-05 1960-05-04 Dow Chemical Co Water-soluble thermoplastic cellulose ethers
DE1418921A1 (de) * 1960-07-21 1968-12-05 Kalle Ag Verfahren zur Herstellung von wasserloeslichen vernetzbaren Celluloseallylmischaethern
FR1295128A (fr) * 1961-07-13 1962-06-01 Kalle Ag Procédé pour la préparation d'allyléthers mixtes de cellulose solubles dans l'eau et capables de former un réseau
US3355449A (en) * 1963-06-19 1967-11-28 Toyo Spinning Co Ltd Water soluble cellulose ethers and their production
US3388082A (en) * 1965-11-01 1968-06-11 Dow Chemical Co Novel hydroxypropyl methyl cellulose ethers, a process for preparing the same, and compositions utilizing such ethers
FR1497780A (fr) * 1965-11-01 1967-10-13 Dow Chemical Co Nouveaux éthers d'hydroxypropyl méthyl cellulose, procédé pour les préparer et compositions les utilisant
SU397519A1 (ru) * 1971-03-12 1973-09-17 Способ получения .мети локси проп и л целлюлозы
US3839319A (en) * 1973-01-26 1974-10-01 Dow Chemical Co Hydroxypropyl methylcellulose ethers and method of preparation
JPS5038782A (es) * 1973-08-10 1975-04-10
US4096325A (en) * 1976-02-20 1978-06-20 Anheuser-Busch, Incorporated Methyl hydroxypropyl cellulose ethers
DE3039963A1 (de) * 1980-10-23 1982-05-27 Hoechst Ag, 6000 Frankfurt Wasserloesliche cellulosemischether mit einem phosphonomethylsubstituenten und ein verfahren zu ihrer herstellung
DE3147434A1 (de) * 1981-11-30 1983-06-09 Hoechst Ag, 6230 Frankfurt Verfahren zur herstellung von celluloseethern mit dimethoxyethan als dispergierhilfsmittel
JPS5949201A (ja) * 1982-09-16 1984-03-21 Shin Etsu Chem Co Ltd ヒドロキシアルキルアルキルセルロ−スの製造方法
US4456751A (en) * 1983-09-22 1984-06-26 The Dow Chemical Company Multiple stage process for preparing mixed hydroxyalkylcellulose ethers

Also Published As

Publication number Publication date
FI74712B (fi) 1987-11-30
FI74712C (fi) 1988-03-10
ATE32901T1 (de) 1988-03-15
CA1206962A (en) 1986-07-02
EP0126959B1 (de) 1988-03-09
US4550161A (en) 1985-10-29
FI841717A0 (fi) 1984-04-30
ES532118A0 (es) 1985-01-01
BR8402053A (pt) 1984-12-11
JPS59207901A (ja) 1984-11-26
JPH0655763B2 (ja) 1994-07-27
DE3469741D1 (en) 1988-04-14
EP0126959A1 (de) 1984-12-05
FI841717A (fi) 1984-11-04
DE3316124A1 (de) 1984-11-08

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