BR9915690A - Processo para a preparação de éteres decelulose hidrossolúveis de baixa viscosidade - Google Patents

Processo para a preparação de éteres decelulose hidrossolúveis de baixa viscosidade

Info

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
Application number
BR9915690-3A
Other languages
English (en)
Inventor
Hartwig Schlesiger
Original Assignee
Wolff Walsrode 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7889225&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR9915690(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Wolff Walsrode Ag filed Critical Wolff Walsrode Ag
Publication of BR9915690A publication Critical patent/BR9915690A/pt

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.
BR9915690-3A 1998-11-27 1999-11-15 Processo para a preparação de éteres decelulose hidrossolúveis de baixa viscosidade BR9915690A (pt)

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)

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RU2322461C2 (ru) * 2002-07-10 2008-04-20 Акцо Нобель Н.В. Способ получения раствора полисахарида или простого эфира полисахарида и твердая композиция для получения этого раствора
JP3905833B2 (ja) * 2002-12-27 2007-04-18 伊那食品工業株式会社 増粘用添加物
BRPI0415764A (pt) 2003-11-28 2006-12-26 Eastman Chem Co interpolìmero, produto de reação, métodos para converter uma hidroxila, para preparar uma forma estável de um interpolìmero, para converter um álcool primário, e para tratar um mamìfero necessitado do mesmo, composições para revestimento e farmacêutica oral, dispersão de pigmento, e, artigo
EP2209811B1 (en) * 2007-11-09 2019-03-06 Union Carbide Chemicals & Plastics Technology LLC Method for preparing very low viscosity cellulose ether and product
US9512237B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Method for inhibiting the growth of microbes with a modified cellulose fiber
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
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
BRPI1012052A2 (pt) 2009-05-28 2017-12-26 Gp Cellulose Gmbh fibras kraft hidrolisadas e quimicamente modificadas e métodos de produção e de branqueamento de fibras kraft
SI2505615T1 (sl) * 2011-04-01 2014-08-29 Omya International Ag Samovezujoäśi pigmentni hibrid
EP2662418B1 (en) * 2012-05-11 2015-02-18 Omya International AG Sustainable adsorbable 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
WO2014140940A2 (en) 2013-03-15 2014-09-18 Gp Cellulose Gmbh A low viscosity kraft fiber having an enhanced carboxyl content and methods of making and using the same
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

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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
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Also Published As

Publication number Publication date
WO2000032636A1 (de) 2000-06-08
EP1153040B1 (de) 2005-06-08
PL349790A1 (en) 2002-09-09
DE19854770A1 (de) 2000-05-31
ES2242432T3 (es) 2005-11-01
CN1334822A (zh) 2002-02-06
UA73294C2 (en) 2005-07-15
US6939961B1 (en) 2005-09-06
DE59912164D1 (de) 2005-07-14
CA2352186A1 (en) 2000-06-08
EP1153040A1 (de) 2001-11-14
ATE297411T1 (de) 2005-06-15
HK1044005B (zh) 2007-03-30
CN1269841C (zh) 2006-08-16
NO20012577D0 (no) 2001-05-25
KR20010080592A (ko) 2001-08-22
CA2352186C (en) 2008-12-30
HK1044005A1 (en) 2002-10-04
AU1506100A (en) 2000-06-19
TR200101448T2 (tr) 2002-04-22
NO20012577L (no) 2001-05-25
JP2002531593A (ja) 2002-09-24

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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.