MXPA05004132A - Procedimiento para la obtencion de metilhidroxialquilcelulosa. - Google Patents
Procedimiento para la obtencion de metilhidroxialquilcelulosa.Info
- Publication number
- MXPA05004132A MXPA05004132A MXPA05004132A MXPA05004132A MXPA05004132A MX PA05004132 A MXPA05004132 A MX PA05004132A MX PA05004132 A MXPA05004132 A MX PA05004132A MX PA05004132 A MXPA05004132 A MX PA05004132A MX PA05004132 A MXPA05004132 A MX PA05004132A
- Authority
- MX
- Mexico
- Prior art keywords
- autoclave
- cellulose
- chloromethane
- alkali metal
- metal hydroxide
- Prior art date
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/32—Vehicles adapted to transport, to carry or to comprise special loads or objects comprising living accommodation for people, e.g. caravans, camping, or like vehicles
- B60P3/34—Vehicles adapted to transport, to carry or to comprise special loads or objects comprising living accommodation for people, e.g. caravans, camping, or like vehicles the living accommodation being expansible, collapsible or capable of rearrangement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/32—Vehicles adapted to transport, to carry or to comprise special loads or objects comprising living accommodation for people, e.g. caravans, camping, or like vehicles
- B60P3/36—Auxiliary arrangements; Arrangements of living accommodation; Details
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Public Health (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Se describe un procedimiento para la fabricacion industrial de metilhidroxialquilcelulosa (MHAC) a partir de la fabricacion de la celulosa en presencia de alcalis con clorometano y con agentes para la hidroxialquilacion, caracterizado porque a) se pulveriza, en un autoclave, la celulosa con solucion acuosa de hidroxido alcalino, en presencia de un agente de suspension, que contiene entre un 20 y un 50% en peso de clorometano, y la celulosa, alcalinizada de este modo, se hace reaccionar con el clorometano, b) se dosifican en caso dado uno o varios agentes para la hidroxialquilacion a una temperatura mayor que 60°C y c) se anade hidroxido alcalino hasta una cantidad al menos + 0,1 veces mayor que la cantidad estequiometrica, referido al clorometano empleado, a continuacion d) en caso dado se anaden uno o varios agentes para la hidroxialquilacion a una temperatura mayor que 60°C y se deja reaccionar la menos durante 20 minutos y e) se dosifica clorometano hasta una cantidad al menos + 0,2 veces mayor que la cantidad estequiometrica, referido al hidroxido alcalino total empleado, f) en caso dado se anade hidroxido alcalino adicional y la reaccion se deja proseguir a una temperatura comprendida en el intervalo desde 60 hasta 110°C y, a continuacion g) se elimina por destilacion el agente de suspension con el clorometano residual y se aisla el producto obtenido, se lava y se seca. Preferentemente la MHAC esta constituida en este caso por metilhidroxietilcelulosa o por metilhidroxipropilcelulosa.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004019296A DE102004019296B4 (de) | 2004-04-21 | 2004-04-21 | Verfahren zur Herstellung von Methylhydroxyalkylcellulose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MXPA05004132A true MXPA05004132A (es) | 2005-10-25 |
Family
ID=34935013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MXPA05004132A MXPA05004132A (es) | 2004-04-21 | 2005-04-18 | Procedimiento para la obtencion de metilhidroxialquilcelulosa. |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US20050240016A1 (es) |
| EP (1) | EP1589035B1 (es) |
| JP (1) | JP4950434B2 (es) |
| KR (1) | KR101164676B1 (es) |
| CN (1) | CN100535014C (es) |
| AU (1) | AU2005201678A1 (es) |
| BR (1) | BRPI0501416A (es) |
| CA (1) | CA2503232A1 (es) |
| DE (1) | DE102004019296B4 (es) |
| MX (1) | MXPA05004132A (es) |
| RU (1) | RU2005111693A (es) |
| TW (1) | TW200610769A (es) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260158B (zh) * | 2008-04-14 | 2010-08-25 | 浙江中维药业有限公司 | 羟丙基甲基纤维素制备方法 |
| WO2010101667A1 (en) | 2009-03-05 | 2010-09-10 | Dow Global Technologies Inc. | Process for improved production of alkali cellulose and cellulose derivatives |
| JP5588762B2 (ja) * | 2009-12-15 | 2014-09-10 | 信越化学工業株式会社 | 高い熱ゲル強度を有するヒドロキシプロピルメチルセルロースを含む食品 |
| WO2012051034A1 (en) | 2010-10-12 | 2012-04-19 | Dow Global Technologies Llc | Novel cellulose ethers and their use |
| WO2012051035A1 (en) | 2010-10-12 | 2012-04-19 | Dow Global Technologies Llc | Novel cellulose ethers and their use |
| EP2721075B2 (en) | 2011-06-14 | 2020-12-02 | Dow Global Technologies LLC | Food composition comprising a cellulose ether |
| EP2890657B1 (en) | 2012-10-18 | 2019-05-08 | Dow Global Technologies LLC | Mortar with hydroxyethyl methyl cellulose for self-compacting concrete |
| ES2683390T3 (es) * | 2012-12-06 | 2018-09-26 | Kao Corporation | Procedimiento para producir hidroxialquilcelulosas |
| US10370459B2 (en) | 2013-03-15 | 2019-08-06 | Hercules Llc | Alkyl hydroxyalkyl cellulose ethers, methods of making, and use in cements and mortars |
| JP6469128B2 (ja) * | 2013-11-25 | 2019-02-13 | ハーキュリーズ エルエルシー | 向上したアルキルヒドロキシアルキルセルロースエーテル、製造方法、ならびにセメントおよびモルタルにおける使用 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3316124A1 (de) * | 1983-05-03 | 1984-11-08 | Hoechst Ag, 6230 Frankfurt | Verfahren zur herstellung von wasserloeslichen cellulosemischethern |
| US4477657A (en) * | 1983-07-08 | 1984-10-16 | The Dow Chemical Company | Process for preparing hydroxyalkylcellulose ethers |
| US4456751A (en) * | 1983-09-22 | 1984-06-26 | The Dow Chemical Company | Multiple stage process for preparing mixed hydroxyalkylcellulose ethers |
| US6228416B1 (en) * | 1999-04-01 | 2001-05-08 | The Dow Chemical Company | Cellulose ether having enhanced gel strength and compositions containing it |
| WO2000059947A1 (en) * | 1999-04-01 | 2000-10-12 | The Dow Chemical Company | Enhanced gel strength methylcellulose |
| US6235893B1 (en) * | 1999-04-01 | 2001-05-22 | The Dow Chemical Company | Process for making cellulose ether having enhanced gel strength |
| DE10038978A1 (de) * | 2000-08-10 | 2002-02-21 | Wolff Walsrode Ag | Verfahren zur Herstellung von Alkylhydroxyalkylcellulose |
| DE10135464A1 (de) * | 2001-07-20 | 2003-02-06 | Wolff Walsrode Ag | Verfahren zur Herstellung von Alkylhydroxyalkylcellulose |
| DK1293515T3 (da) * | 2001-09-14 | 2007-07-30 | Wolff Cellulosics Gmbh & Co Kg | Fremgangsmåde og udstyr til industriel fremstilling af methylhydroxyalkylcellulose |
-
2004
- 2004-04-21 DE DE102004019296A patent/DE102004019296B4/de not_active Expired - Lifetime
-
2005
- 2005-04-12 EP EP05007938.3A patent/EP1589035B1/de active Active
- 2005-04-14 US US11/105,679 patent/US20050240016A1/en not_active Abandoned
- 2005-04-18 MX MXPA05004132A patent/MXPA05004132A/es active IP Right Grant
- 2005-04-18 CA CA002503232A patent/CA2503232A1/en not_active Abandoned
- 2005-04-19 CN CNB2005100672921A patent/CN100535014C/zh active Active
- 2005-04-20 BR BR0501416-6A patent/BRPI0501416A/pt not_active IP Right Cessation
- 2005-04-20 TW TW094112490A patent/TW200610769A/zh unknown
- 2005-04-20 RU RU2005111693/04A patent/RU2005111693A/ru not_active Application Discontinuation
- 2005-04-20 KR KR1020050032630A patent/KR101164676B1/ko active IP Right Grant
- 2005-04-21 JP JP2005123389A patent/JP4950434B2/ja active Active
- 2005-04-21 AU AU2005201678A patent/AU2005201678A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CA2503232A1 (en) | 2005-10-21 |
| EP1589035A1 (de) | 2005-10-26 |
| DE102004019296A1 (de) | 2005-11-24 |
| AU2005201678A1 (en) | 2005-11-10 |
| TW200610769A (en) | 2006-04-01 |
| JP4950434B2 (ja) | 2012-06-13 |
| CN1690082A (zh) | 2005-11-02 |
| CN100535014C (zh) | 2009-09-02 |
| EP1589035B1 (de) | 2016-05-25 |
| DE102004019296B4 (de) | 2006-01-05 |
| RU2005111693A (ru) | 2006-10-27 |
| JP2005307214A (ja) | 2005-11-04 |
| KR101164676B1 (ko) | 2012-07-11 |
| KR20060047257A (ko) | 2006-05-18 |
| US20050240016A1 (en) | 2005-10-27 |
| BRPI0501416A (pt) | 2005-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW200610769A (en) | Process for the production of methylhydroxyalkyl cellulose | |
| ATE245633T1 (de) | Verfahren zur herstellung eines triazolinthion- derivates | |
| UA87389C2 (ru) | Способ получения тризамещенных солей метилглицин-n,n-диуксусной кислоты и катионов щелочных металлов | |
| TW200700364A (en) | Process for preparing a chlorohydrin by chlorinating a polyhydroxylated aliphatic hydrocarbon | |
| NZ512993A (en) | Process for the production of multiple cross-linked hyaluronic acid derivatives | |
| WO2009025354A1 (ja) | シラン変性カチオン化セルロースの製造方法 | |
| JO3023B1 (ar) | عملية لتحضير هاليدات n -الكيل نالتريكسون | |
| DE60334615D1 (de) | Verfahren zur herstellung modifizierter pigmente | |
| ATE399195T1 (de) | Wässrige silannanokomposite | |
| DE502005006163D1 (de) | Verfahren zur herstellung quartärer ammoniumverbindungen hoher reinheit | |
| PL1943290T3 (pl) | Poliamidy z m-ksylilenodiaminy i kwasu adypinowego, zawierające końcowe grupy aminowe w ilości poniżej 15 mmoli/kg | |
| BR0014479A (pt) | Processo contìnuo aperfeiçoado para a produção de ácido tereftálico puro | |
| CN101230105A (zh) | 羧甲基淀粉醚及生产方法 | |
| CN104151515B (zh) | 一种石墨烯改性呋喃树脂及其制备方法 | |
| MX2011008348A (es) | Proceso para producir derivado heterociclico sustituido con fenilo a traves de acoplamiento usando catalizador de metal de transicion. | |
| SG170022A1 (en) | Method for production of peptide thioester compound | |
| EP1752459A4 (en) | PROCESS FOR THE PRODUCTION OF 3-ALKENYL-CEPHEN COMPOUNDS | |
| WO2002088468A3 (de) | Verfahren zur herstellung von faserformkörpern | |
| TW200700371A (en) | Process for preparing high-purity, halogen-free o-phthalaldehyde | |
| EP1852419A4 (en) | PROCESS FOR PREPARING A FLUORINATED PROLIN DERIVATIVE | |
| JPH0717970A (ja) | スルフォレンの製造方法 | |
| BG106951A (en) | Method for producing 6-(4-chlorophenyl)-2,2-dimethyl-7-phenyl-2,3-dihydro-1h-pyrrolizin e-5-yl acetic acid | |
| CN109306045A (zh) | 铸造用呋喃树脂及其制造方法 | |
| ATE286040T1 (de) | Verfahren zur herstellung eines thiophenderivates | |
| TH75841A (th) | กระบวนการสำหรับผลิตเมทธิลไฮดรอกซีอัลคิลเซลลูโลส |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GB | Transfer or rights | ||
| HC | Change of company name or juridical status | ||
| FG | Grant or registration | ||
| GB | Transfer or rights |