BR8601149A - Processo para remover impurezas soluveis em solventes - Google Patents
Processo para remover impurezas soluveis em solventesInfo
- Publication number
- BR8601149A BR8601149A BR8601149A BR8601149A BR8601149A BR 8601149 A BR8601149 A BR 8601149A BR 8601149 A BR8601149 A BR 8601149A BR 8601149 A BR8601149 A BR 8601149A BR 8601149 A BR8601149 A BR 8601149A
- Authority
- BR
- Brazil
- Prior art keywords
- solvents
- remove solvent
- solvent impurities
- impurities
- remove
- 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
- C08B11/20—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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/712,287 US4581446A (en) | 1985-03-15 | 1985-03-15 | Purification of cellulose ethers |
Publications (1)
Publication Number | Publication Date |
---|---|
BR8601149A true BR8601149A (pt) | 1986-11-25 |
Family
ID=24861499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR8601149A BR8601149A (pt) | 1985-03-15 | 1986-03-14 | Processo para remover impurezas soluveis em solventes |
Country Status (6)
Country | Link |
---|---|
US (1) | US4581446A (pt) |
EP (1) | EP0194877B2 (pt) |
JP (1) | JPS61252201A (pt) |
BR (1) | BR8601149A (pt) |
CA (1) | CA1275650C (pt) |
DE (1) | DE3665312D1 (pt) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2737109B2 (ja) * | 1985-09-20 | 1998-04-08 | 株式会社リコー | 音声区間検出方式 |
US4820813A (en) * | 1986-05-01 | 1989-04-11 | The Dow Chemical Company | Grinding process for high viscosity cellulose ethers |
DE3628826A1 (de) * | 1986-08-25 | 1988-03-03 | Henkel Kgaa | Verfahren zur aufarbeitung von wasserloeslichen cellulosederivaten mit hohen flockungspunkten |
DE3729268A1 (de) * | 1987-09-02 | 1989-03-16 | Henkel Kgaa | Verfahren und anlage zur abtrennung und reinigung von celluloseethern und anderen cellulosederivaten |
EP0384573A1 (en) * | 1989-01-23 | 1990-08-29 | The Dow Chemical Company | Removal of color material from water-soluble polymer solutions |
FI925499A (fi) * | 1991-12-06 | 1993-06-07 | Hoechst Ag | Foerfarande foer renande behandling av reaktions- och/eller tvaettmedier som uppstaor vid framstaellning av cellulosaetrar |
US5218107A (en) * | 1991-12-30 | 1993-06-08 | The Dow Chemical Company | Removal of undesirable material from water-soluble cellulose ether aqueous solutions |
KR100461564B1 (ko) * | 2001-11-24 | 2004-12-14 | 삼성정밀화학 주식회사 | 셀룰로스에테르의 제조방법 |
KR101137639B1 (ko) * | 2004-11-02 | 2012-04-19 | 신에쓰 가가꾸 고교 가부시끼가이샤 | 수용성 셀룰로오스 에테르의 분리 방법 |
KR20170025168A (ko) * | 2015-08-27 | 2017-03-08 | 롯데정밀화학 주식회사 | 셀룰로오스 에테르의 제조 방법 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1468048B2 (de) * | 1964-11-28 | 1975-02-20 | Henkel & Cie Gmbh, 4000 Duesseldorf | Verfahren zur Herstellung von Hydroxypropyl-methylcellulosen |
US3448100A (en) * | 1968-04-18 | 1969-06-03 | Dow Chemical Co | Manufacture of carboxymethyl hydroalkyl mixed cellulose ethers |
US4018681A (en) * | 1972-10-13 | 1977-04-19 | International Telephone And Telegraph Corporation | Filtration of cellulosic solutions |
US4229572A (en) * | 1979-03-05 | 1980-10-21 | The Dow Chemical Company | Purification of cellulose ether reaction product |
DE2912486A1 (de) * | 1979-03-29 | 1980-10-09 | Henkel Kgaa | Verfahren zum reinigen von kaltwasserloeslichen celluloseethern und verwendung der gereinigten produkte, insbesondere in wasch- und reinigungsmitteln |
DE3043621A1 (de) * | 1980-11-19 | 1982-07-08 | Bayer Ag, 5090 Leverkusen | Reinigung von cellulose- und staerkeethern |
DE3044696A1 (de) * | 1980-11-27 | 1982-06-24 | Bayer Ag, 5090 Leverkusen | Reinigung von cellulose- und staerkeethern |
-
1985
- 1985-03-15 US US06/712,287 patent/US4581446A/en not_active Expired - Lifetime
-
1986
- 1986-03-11 CA CA000503725A patent/CA1275650C/en not_active Expired - Fee Related
- 1986-03-12 EP EP86301790A patent/EP0194877B2/en not_active Expired - Lifetime
- 1986-03-12 DE DE8686301790T patent/DE3665312D1/de not_active Expired
- 1986-03-14 BR BR8601149A patent/BR8601149A/pt unknown
- 1986-03-14 JP JP61055156A patent/JPS61252201A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
EP0194877B1 (en) | 1989-08-30 |
CA1275650C (en) | 1990-10-30 |
JPS61252201A (ja) | 1986-11-10 |
EP0194877A1 (en) | 1986-09-17 |
DE3665312D1 (en) | 1989-10-05 |
EP0194877B2 (en) | 1998-01-28 |
JPH0546361B2 (pt) | 1993-07-13 |
US4581446A (en) | 1986-04-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
BR7607915A (pt) | Processo e aparelho para remover impurezas dissolvidas em agua | |
BR8603402A (pt) | Processo e aparelho para recuperar hidrocarbonetos liquidos | |
BR8602234A (pt) | Processo para preparar um iniciador suportado | |
PT82969A (pt) | Processo para retirar selenio hexavalente de agua | |
BR8402228A (pt) | Processo para produzir solventes aromaticos de elevada qualidade | |
BR8605792A (pt) | Processo de purificacao para altas concentracoes de carga | |
BR8601149A (pt) | Processo para remover impurezas soluveis em solventes | |
BR8705734A (pt) | Aperfeicoamento em um processo para produzir adiponitrila | |
BR8302088A (pt) | Processo para preparar cicloexanol e cicloexanona | |
BR8902564A (pt) | Processo para recuperar metacroleina | |
BR7605233A (pt) | Aperfeicoamento em processo para remover fluor de acido fosforico | |
BR8905599A (pt) | Processo para remover impurezas organicas oxidaveis | |
BR9001998A (pt) | Barra detergente e processo para prepara-la | |
BR8700979A (pt) | Processo para preparar sementes magnetizadas | |
BR7707635A (pt) | Processo para minimizar o residuo organico em processo de extracao liquido-liquido | |
BR8602044A (pt) | Processo para recuperacao de oleo | |
BR8600058A (pt) | Processo para conversao de octametilcilcotetras-siloxanas em decametilciclopentas-siloxanas | |
BR8700990A (pt) | Processo para preparar uma composicao de organopolisiloxano | |
BR8207217A (pt) | Quebra-nozes e processo para quebrar e remover as cascas de nozes | |
BR8806205A (pt) | Aparelho e processo para retirar contaminantes em forma de cordoalha | |
BR9007992A (pt) | Processo para recuperar proteinas recombinantes | |
BR8900621A (pt) | Processo para preparar acido n-fosfono-metil-imino-diacetico | |
BR8703166A (pt) | Processo para produzir dimetilamina | |
BR8600803A (pt) | Processo para produzir condensadores | |
BR8803113A (pt) | Processo para remover po de eletrodos de precipitacao |