BR9915690A - Processo para a preparação de éteres decelulose hidrossolúveis de baixa viscosidade - Google Patents
Processo para a preparação de éteres decelulose hidrossolúveis de baixa viscosidadeInfo
- Publication number
- BR9915690A BR9915690A BR9915690-3A BR9915690A BR9915690A BR 9915690 A BR9915690 A BR 9915690A BR 9915690 A BR9915690 A BR 9915690A BR 9915690 A BR9915690 A BR 9915690A
- Authority
- BR
- Brazil
- Prior art keywords
- mixture
- cellulose ethers
- hydrogen peroxide
- soluble cellulose
- preparation
- 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
-
- 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
- C08B11/02—Alkyl or cycloalkyl ethers
- C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
- C08B11/08—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals with hydroxylated hydrocarbon radicals; Esters, ethers, or acetals thereof
-
- 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
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)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Patente de Invenção: "PROCESSO PARA A PREPARAçãO DEéTERES DE CELULOSE HIDROSSOLúVEIS DE BAIXAVISCOSIDADE". Processo para a preparação de éteres decelulose hidrossolúveis de baixa viscosidade mediante degradaçãooxidativa de éteres de celulose de viscosidade mais elevada comperóxido de hidrogênio, no qual se mistura o éter de celulose deviscosidade mais elevada intensamente com uma solução aquosade peróxido de hidrogênio em temperaturas de 65 125<198>C,sendo que a razão de mistura é escolhida de modo tal, que o teorde peróxido de hidrogênio, com relação ao éter de celulose secoimporta em 0,1 - 10% em peso, o teor sólido da mistura nãoultrapassa 25% em peso, com relação à quantidade total da misturae se mantém a mistura em movimento, então, em temperaturas de65-125<198>C, até o consumo de pelo menos aproximadamente90% do peróxido de hidrogênio.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19854770A DE19854770A1 (de) | 1998-11-27 | 1998-11-27 | Verfahren zur Herstellung niedrigviskoser wasserlöslicher Celluloseether |
PCT/EP1999/008779 WO2000032636A1 (de) | 1998-11-27 | 1999-11-15 | Verfahren zur herstellung niedrigviskoser wasserlöslicher celluloseether |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9915690A true BR9915690A (pt) | 2001-11-13 |
Family
ID=7889225
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9915690-3A BR9915690A (pt) | 1998-11-27 | 1999-11-15 | Processo para a preparação de éteres decelulose hidrossolúveis de baixa viscosidade |
Country Status (17)
Country | Link |
---|---|
US (1) | US6939961B1 (pt) |
EP (1) | EP1153040B1 (pt) |
JP (1) | JP2002531593A (pt) |
KR (1) | KR20010080592A (pt) |
CN (1) | CN1269841C (pt) |
AT (1) | ATE297411T1 (pt) |
AU (1) | AU1506100A (pt) |
BR (1) | BR9915690A (pt) |
CA (1) | CA2352186C (pt) |
DE (2) | DE19854770A1 (pt) |
ES (1) | ES2242432T3 (pt) |
HK (1) | HK1044005B (pt) |
NO (1) | NO20012577L (pt) |
PL (1) | PL349790A1 (pt) |
TR (1) | TR200101448T2 (pt) |
UA (1) | UA73294C2 (pt) |
WO (1) | WO2000032636A1 (pt) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006507373A (ja) * | 2002-07-10 | 2006-03-02 | アクゾ ノーベル ナムローゼ フェンノートシャップ | 水溶性ポリサッカライドの脱重合 |
JP3905833B2 (ja) * | 2002-12-27 | 2007-04-18 | 伊那食品工業株式会社 | 増粘用添加物 |
EP1689787A2 (en) | 2003-11-28 | 2006-08-16 | Eastman Chemical Company | Cellulose interpolymers and method of oxidation |
MX2010004931A (es) * | 2007-11-09 | 2010-06-11 | Union Carbide Chem Plastic | Metodo para preparar eter de celulosa de muy baja viscosidad y producto. |
MX357819B (es) | 2009-05-28 | 2018-07-25 | Gp Cellulose Gmbh Star | Celulosa modificada a partir de fibra kraft química y métodos para elaborarla y su uso. |
US9512237B2 (en) | 2009-05-28 | 2016-12-06 | Gp Cellulose Gmbh | Method for inhibiting the growth of microbes with a modified cellulose fiber |
US9511167B2 (en) | 2009-05-28 | 2016-12-06 | Gp Cellulose Gmbh | Modified cellulose from chemical kraft fiber and methods of making and using the same |
US9512563B2 (en) | 2009-05-28 | 2016-12-06 | Gp Cellulose Gmbh | Surface treated modified cellulose from chemical kraft fiber and methods of making and using same |
ES2487639T3 (es) * | 2011-04-01 | 2014-08-22 | Omya International Ag | Híbrido de pigmentos autoaglutinantes |
RS53929B1 (en) * | 2012-05-11 | 2015-08-31 | Omya International Ag | SUSTAINABLE ADSORPTIVE POLYMERS |
KR101971738B1 (ko) | 2012-12-11 | 2019-04-23 | 롯데정밀화학 주식회사 | 부분 중화법을 통한 초저점도 히드록시알킬 셀룰로오스의 제조방법 |
KR102033179B1 (ko) * | 2012-12-28 | 2019-10-16 | 롯데정밀화학 주식회사 | 스킴코트 모르타르용 첨가제 및 이를 포함하는 스킴코트 모르타르 조성물 |
KR101586136B1 (ko) * | 2013-01-09 | 2016-01-15 | 신에쓰 가가꾸 고교 가부시끼가이샤 | 저중합도 셀룰로오스에테르의 제조 방법 및 이에 따라 제조된 셀룰로오스에테르 |
MX357604B (es) | 2013-03-15 | 2018-07-16 | Gp Cellulose Gmbh | Una fibra kraft de baja viscosidad que tiene un contenido de carboxilo mejorado, y metodos para fabricar y usar la misma. |
CN104558203B (zh) * | 2015-01-22 | 2016-08-24 | 湖州展望药业股份有限公司 | 一种特低粘度高取代羟丙基纤维素醚的制备方法及其制品 |
KR102373750B1 (ko) * | 2016-10-06 | 2022-03-15 | 신에쓰 가가꾸 고교 가부시끼가이샤 | 저중합도 셀룰로오스 에테르의 제조 방법 |
DE102017223690A1 (de) * | 2017-12-22 | 2019-06-27 | Se Tylose Gmbh & Co. Kg | Oxidativer Abbau von Celluloseethern |
CN109336983B (zh) * | 2018-11-15 | 2020-12-29 | 泸州北方纤维素有限公司 | 用于特低粘羟乙基纤维素的制备方法 |
CN109627346A (zh) * | 2018-12-06 | 2019-04-16 | 泸州北方纤维素有限公司 | 稳定性良好的超低粘度乙基纤维素及其制备方法 |
CN113683470A (zh) * | 2021-08-23 | 2021-11-23 | 姚鲁 | 一种改善射钉装药制造的安全和环保方法 |
CN115572107B (zh) * | 2022-11-11 | 2024-01-19 | 亚士创能新材料(滁州)有限公司 | 耐温变施工的真石漆及其制备方法、应用 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB953944A (en) * | 1962-02-16 | 1964-04-02 | Ici Ltd | Reduction of viscosity of water-soluble non-ionic cellulose ethers |
DE1543116A1 (de) * | 1965-05-29 | 1969-07-31 | Kalle Ag | Verfahren zur Herstellung niedrigviskoser wasserloeslicher Celluloseaether |
US3728331A (en) * | 1969-04-04 | 1973-04-17 | Dow Chemical Co | Process for reducing the viscosity of a cellulose ether with hydrogen peroxide |
JPS5941643B2 (ja) * | 1979-02-15 | 1984-10-08 | 株式会社興人 | 低粘度カルボキシメチルエチルセルロ−スの製造法 |
JPS5928321B2 (ja) * | 1979-02-16 | 1984-07-12 | 株式会社興人 | カルボキシメチルセルロ−スのマ−セル化方法 |
DE3009149A1 (de) * | 1980-03-10 | 1981-09-24 | Kohjin Co., Ltd., Tokyo | Verfahren zum veraethern von cellulosen |
JPS6051481B2 (ja) * | 1981-04-30 | 1985-11-14 | 株式会社興人 | 低粘度セルロ−スエ−テル類の製造方法 |
DE3839831A1 (de) * | 1988-11-25 | 1990-05-31 | Hoechst Ag | Verfahren und vorrichtung zur produktschonenden mahlung und gleichzeitigen trocknung von feuchten celluloseethern |
JP2800061B2 (ja) * | 1990-05-21 | 1998-09-21 | ダイセル化学工業株式会社 | 低粘度カルボキシメチルセルロースナトリウムの製造法 |
JP2800062B2 (ja) * | 1990-05-21 | 1998-09-21 | ダイセル化学工業株式会社 | 超低粘度カルボキシメチルセルロースナトリウム塩 |
DE69129608T2 (de) * | 1990-07-02 | 1998-10-15 | Aqualon Co | Niedrigviskose-Polysaccharidzusammensetzung mit hohem Festkörpergehalt |
JPH0681761B2 (ja) * | 1991-07-12 | 1994-10-19 | 三洋化成工業株式会社 | セルロース誘導体の低分子化方法および低分子量セルロース誘導体のエーテル化方法 |
GB2262527A (en) * | 1992-07-02 | 1993-06-23 | Dow Deutschland Inc | Process for grinding cellulose compounds |
DE4411681A1 (de) * | 1994-04-05 | 1995-10-12 | Hoechst Ag | Verfahren zur Herstellung niedermolekularer Polysaccharidether |
-
1998
- 1998-11-27 DE DE19854770A patent/DE19854770A1/de not_active Withdrawn
-
1999
- 1999-11-15 US US09/856,545 patent/US6939961B1/en not_active Expired - Fee Related
- 1999-11-15 JP JP2000585276A patent/JP2002531593A/ja active Pending
- 1999-11-15 UA UA2001064446A patent/UA73294C2/uk unknown
- 1999-11-15 TR TR2001/01448T patent/TR200101448T2/xx unknown
- 1999-11-15 CN CNB998137154A patent/CN1269841C/zh not_active Expired - Fee Related
- 1999-11-15 AT AT99957311T patent/ATE297411T1/de not_active IP Right Cessation
- 1999-11-15 DE DE59912164T patent/DE59912164D1/de not_active Revoked
- 1999-11-15 KR KR1020017006602A patent/KR20010080592A/ko not_active Application Discontinuation
- 1999-11-15 BR BR9915690-3A patent/BR9915690A/pt not_active Application Discontinuation
- 1999-11-15 ES ES99957311T patent/ES2242432T3/es not_active Expired - Lifetime
- 1999-11-15 CA CA002352186A patent/CA2352186C/en not_active Expired - Fee Related
- 1999-11-15 WO PCT/EP1999/008779 patent/WO2000032636A1/de not_active Application Discontinuation
- 1999-11-15 EP EP99957311A patent/EP1153040B1/de not_active Revoked
- 1999-11-15 PL PL99349790A patent/PL349790A1/xx not_active Application Discontinuation
- 1999-11-15 AU AU15061/00A patent/AU1506100A/en not_active Abandoned
-
2001
- 2001-05-25 NO NO20012577A patent/NO20012577L/no not_active Application Discontinuation
-
2002
- 2002-07-23 HK HK02105446.7A patent/HK1044005B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US6939961B1 (en) | 2005-09-06 |
PL349790A1 (en) | 2002-09-09 |
DE19854770A1 (de) | 2000-05-31 |
JP2002531593A (ja) | 2002-09-24 |
CN1334822A (zh) | 2002-02-06 |
HK1044005B (zh) | 2007-03-30 |
ATE297411T1 (de) | 2005-06-15 |
DE59912164D1 (de) | 2005-07-14 |
CN1269841C (zh) | 2006-08-16 |
KR20010080592A (ko) | 2001-08-22 |
WO2000032636A1 (de) | 2000-06-08 |
ES2242432T3 (es) | 2005-11-01 |
CA2352186A1 (en) | 2000-06-08 |
NO20012577D0 (no) | 2001-05-25 |
AU1506100A (en) | 2000-06-19 |
EP1153040B1 (de) | 2005-06-08 |
EP1153040A1 (de) | 2001-11-14 |
NO20012577L (no) | 2001-05-25 |
UA73294C2 (en) | 2005-07-15 |
CA2352186C (en) | 2008-12-30 |
HK1044005A1 (en) | 2002-10-04 |
TR200101448T2 (tr) | 2002-04-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B07A | Application suspended after technical examination (opinion) [chapter 7.1 patent gazette] | ||
B09B | Patent application refused [chapter 9.2 patent gazette] |
Free format text: INDEFIRO O PRESENTE PEDIDO, UMA VEZ QUE NAO ATENTE AO REQUISITO DE ATIVIDADE INVENTIVA (ART. 8O COMBINADO COM ART. 13 DA LPI). |
|
B15G | Petition not considered as such [chapter 15.7 patent gazette] |
Free format text: DESCONHECIDAS AS ALT. DE NOME E SEDE REQUERIDAS ATRAVES DA PETICAO NO 020080121567/RJ DE 18/09/2008, POR AUSENCIA DE FUNDAMENTACAO LEGAL, UMA VEZ QUE O PEDIDO FOI INDEFERIDO NA RPI 1972 DE 21/10/2008. |