ES8701787A1 - Un procedimiento para purificar un eter de celulosa soluble en agua, no gelificante, crudo - Google Patents

Un procedimiento para purificar un eter de celulosa soluble en agua, no gelificante, crudo

Info

Publication number
ES8701787A1
ES8701787A1 ES544680A ES544680A ES8701787A1 ES 8701787 A1 ES8701787 A1 ES 8701787A1 ES 544680 A ES544680 A ES 544680A ES 544680 A ES544680 A ES 544680A ES 8701787 A1 ES8701787 A1 ES 8701787A1
Authority
ES
Spain
Prior art keywords
cellulose ethers
slurry
preparing cellulose
dewatering
purified
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
ES544680A
Other languages
English (en)
Other versions
ES544680A0 (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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of ES544680A0 publication Critical patent/ES544680A0/es
Publication of ES8701787A1 publication Critical patent/ES8701787A1/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
    • C08B11/20—Post-etherification treatments of chemical or physical type, e.g. mixed etherification in two steps, including purification

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)

Abstract

METODO DE PURIFICACION DE ETERES DE CELULOSA SOLUBLES EN AGUA, NO GELIFICANTES, CRUDOS. CONSISTE EN MEZCLAR MEDIANTE AGITACION FUERTE EL ETER DE CELULOSA CRUDO CON 1 A 5% DE DICHO ETER DE CELULOSA DE UN DIALDEHIDO, DE PESO MOLECULAR BAJO, TAL COMO GLIOXAL EN UN MEDIO ACUOSO ACIDO, A UN PH DE 1 A 6, AJUSTADO CON UN ACIDO ORGANICO, TAL COMO ACIDO FORMICO, HASTA QUE EL ETER DE CELULOSA SE HACE INSOLUBLE EN AGUA, POR RETICULACION; FORMAR UNA SUSPENSION ACUOSA DILUIDA CON EL ETER DE CELULOSA RETICULADO A UNA TEMPERATURA COMPRENDIDA ENTRE 15JC Y 30JC; Y ELIMINACION DE AGUA DE LA SUSPENSION POR FILTRACION. ESTOS COMPUESTOS TIENEN APLICACIONES COMO AGENTES ESPESANTES, DE UNION Y ADITIVOS EN COMPOSICIONES FARMACEUTICAS.
ES544680A 1984-06-29 1985-06-28 Un procedimiento para purificar un eter de celulosa soluble en agua, no gelificante, crudo Expired ES8701787A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/626,513 US4537958A (en) 1984-06-29 1984-06-29 Process for preparing cellulose ethers

Publications (2)

Publication Number Publication Date
ES544680A0 ES544680A0 (es) 1986-12-01
ES8701787A1 true ES8701787A1 (es) 1986-12-01

Family

ID=24510688

Family Applications (1)

Application Number Title Priority Date Filing Date
ES544680A Expired ES8701787A1 (es) 1984-06-29 1985-06-28 Un procedimiento para purificar un eter de celulosa soluble en agua, no gelificante, crudo

Country Status (6)

Country Link
US (1) US4537958A (es)
EP (1) EP0166457A3 (es)
JP (1) JPS6134001A (es)
AU (1) AU567817B2 (es)
CA (1) CA1236452A (es)
ES (1) ES8701787A1 (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5674999A (en) * 1995-12-18 1997-10-07 The Dow Chemical Company Process for preparing readily dispersible water-soluble cellulosic polymers
GB9713831D0 (en) * 1997-06-30 1997-09-03 Fry Metals Inc Sealing glass paste for cathode ray tubes
KR100461564B1 (ko) * 2001-11-24 2004-12-14 삼성정밀화학 주식회사 셀룰로스에테르의 제조방법
DE10158488A1 (de) * 2001-11-28 2003-06-12 Wolff Cellulosics Gmbh & Co Kg Lösungsverzögerte Celluloseether und ein Verfahren zu ihrer Herstellung
DE10233788A1 (de) * 2002-07-25 2004-02-05 Wolff Cellulosics Gmbh & Co. Kg Cellulosederivate mit gel-artigen rheologischen Eigenschaften und Verfahren zur Herstellung derselben
ITVA20020051A1 (it) * 2002-10-14 2004-04-15 Lamberti Spa Modificatore di reologia per prodotti destinati all'edilizia.
JP4914722B2 (ja) * 2004-09-29 2012-04-11 興和株式会社 セルロース誘導体リン酸エステル及びそれを用いた金属吸着材
EP2418185A4 (en) * 2009-03-12 2013-09-11 Samsung Fine Chemicals Co Ltd BREAKFAST ADDITIONAL MIXTURE FOR CEMENT MORTAR AND CEMENT MORTAR THEREWITH
MX336758B (es) * 2010-09-22 2016-01-29 Dow Global Technologies Llc Tratamiento de polisacaridos con dialdehidos.
EP2733154B1 (en) * 2012-11-16 2015-06-17 Shin-Etsu Chemical Co., Ltd. Method for producing purified low-substituted hydroxypropyl cellulose
KR102033179B1 (ko) * 2012-12-28 2019-10-16 롯데정밀화학 주식회사 스킴코트 모르타르용 첨가제 및 이를 포함하는 스킴코트 모르타르 조성물

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2329741A (en) * 1940-10-19 1943-09-21 Carbide & Carbon Chem Corp Cellulose ether derivatives and process for producing the same
US3072635A (en) * 1959-11-04 1963-01-08 Chemical Dev Of Canada Ltd Readily dissolving cellulose derivatives and process therefor
US3356519A (en) * 1964-02-28 1967-12-05 Dow Chemical Co Cellulose ether composition
DE1244145B (de) * 1964-05-02 1967-07-13 Henkel & Cie Gmbh Verfahren zum Reinigen von wasserloeslicher Hydroxyaethylcellulose
DE1719445B1 (de) * 1964-11-21 1970-06-18 Wolff Walsrode Ag Verfahren zur Herstellung von verdickten kolloiden Loesungen,Emulsionen oder Dispersionen
GB1142281A (en) * 1967-02-16 1969-02-05 Ici Ltd Production of hydroxyalkyl cellulose
US3709876A (en) * 1972-04-10 1973-01-09 Dow Chemical Co Water soluble hydroxyethyl methyl cellulose ether thickener for latex paint
US3903076A (en) * 1974-06-26 1975-09-02 Dow Chemical Co Preparation and purification of cellulose ethers
US4400502A (en) * 1982-04-27 1983-08-23 Hercules Incorporated Readily dispersible anionic, water-soluble cellulose derivatives and a method for their preparation

Also Published As

Publication number Publication date
CA1236452A (en) 1988-05-10
US4537958A (en) 1985-08-27
ES544680A0 (es) 1986-12-01
JPS6134001A (ja) 1986-02-18
EP0166457A3 (en) 1986-08-13
EP0166457A2 (en) 1986-01-02
AU4337885A (en) 1986-01-02
AU567817B2 (en) 1987-12-03

Similar Documents

Publication Publication Date Title
DE3172527D1 (en) Process for preparing porous, spherical cellulose particles
HU182261B (en) Process for the continuous saccharification of cellulose in plant raw materials
ES8701787A1 (es) Un procedimiento para purificar un eter de celulosa soluble en agua, no gelificante, crudo
ES8102065A1 (es) Procedimiento mejorado para fabricar un material compuesto que contiene una matriz de aglutinante inorganico rigido y -refuerzo de fibras.
ZA747282B (en) Process for the manufacture of water adsorbing cellulose ethers
GB2112807B (en) Process for producing high-concentration coal-water slurry
DE3370336D1 (en) Process for preparing hydroxyalkylmethyl cellulose ethers
ES8308224A1 (es) Una suspension de agua carbonosa.
FR2500771B1 (fr) Procede pour produire des pieces de forme renforcees de fibres exemptes de cavites
GB2112665B (en) Process for producing high-concentration slurry of coal
DE3371064D1 (en) Process for the production of mixed alcohols
CA2079442A1 (en) A process using cellulase for improving drainage properties of pulp
DE3380352D1 (en) Biological process for producing acid precipitable polymeric lignin
DE3562921D1 (en) Alkoxylated aminopolyethers, process for their preparation and coal-water suspensions containing them
DE3478701D1 (en) Method for treating lignocellulose materials to obtain cellulose
AU1722683A (en) Method for preparing coal-water slurry by divided addition of dispersing agent
SE8006100L (sv) Bindemedel
DE3372717D1 (en) Filter paper
PT76662B (en) Process for preparing antiulcer 2-guanidino-4-(2-substituted-amino-4-imidazolyl)-thiazoles
GB1009707A (en) A method of treating raw sludge in sewage systems
DE3363205D1 (en) Process for producing pitch for using as raw material for carbon fibers
DE3460007D1 (en) Tributylphenol-ethersulphonates, their use and process for the preparation of ether sulphonates
DE3566396D1 (en) Process for preparing ethers
DE3277017D1 (en) Cellulose ether and cellulose mixture ether having at least a phosphorous-containing substituent, and process for their preparation
EP0170433A3 (en) Process for producing a high concentration solid fuel-water slurry