BR0115388A - éteres de celulose e método de preparação dos mesmos - Google Patents
éteres de celulose e método de preparação dos mesmosInfo
- Publication number
- BR0115388A BR0115388A BR0115388-9A BR0115388A BR0115388A BR 0115388 A BR0115388 A BR 0115388A BR 0115388 A BR0115388 A BR 0115388A BR 0115388 A BR0115388 A BR 0115388A
- Authority
- BR
- Brazil
- Prior art keywords
- cellulose
- pulp
- mercerized
- flake
- prepared
- 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
- C08B11/02—Alkyl or cycloalkyl ethers
- C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
- C08B1/06—Rendering cellulose suitable for etherification
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
- C08B1/08—Alkali cellulose
-
- 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
-
- 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
- C08B11/10—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals
- C08B11/12—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals substituted with carboxylic radicals, e.g. carboxymethylcellulose [CMC]
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)
- Paper (AREA)
Abstract
"éTERES DE CELULOSE E MéTODO DE PREPARAçãO DOS MESMOS". A presente invenção descobriu que a reologia de solução de éteres de celulose preparados de polpa de celulose é alterada pela mercerização e recuperação da polpa de celulose antes da preparação dos éteres de celulose. Por exemplo, a viscosidade da solução de carboximetil celulose (CMC) produzida de polpa de celulose mercerizada e recuperada é significativamente maior que aquela produzida de polpa de celulose não mercerizada. A presente invenção provê um método para a preparação de éteres de celulose compreendendo as etapas de (a) obtenção de polpa de celulose mercerizada e recuperada, e (b) recuperação da polpa de celulose em éteres de celulose. De acordo com uma configuração, a polpa de celulose é tipo kraft de madeira macia do sul e a polpa de celulose mercerizada possui uma viscosidade TAPPI 230 om-89 de no máximo 12 cP. Este método, entretanto, pode ser aplicado a todas as polpas de celulose, independente de suas viscosidades, incluindo aquelas que, quando mercerizadas, possuem uma viscosidade maior que 12 cP. A polpa de celulose mercerizada é tìpica e substancialmente isenta de celulose III. A polpa de celulose mercerizada preparada por este método possui uma porcentagem maior de celulose cristalina II e uma área cristalina menor que aquela de polpa de celulose não mercerizada. A presente invenção também provê um método para preparação de um floco de celulose compreendendo as etapas de (a) obtenção de polpa de celulose mercerizada e recuperada, e (b) tratamento da polpa mercerizada para formar o floco de celulose. Alternativamente, o método compreende a mercerização e recuperação de um floco de celulose. O floco de celulose preparado por este método possui uma densidade em massa maior que aquela do floco de celulose preparado de polpa de celulose similar não mercerizada. Além do mais, o ganho de densidade em massa é maior que aquele esperado do ganho de aspereza (peso por unidade de comprimento de fibra) da preparação de um floco de celulose.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US24503700P | 2000-11-01 | 2000-11-01 | |
| PCT/US2001/045482 WO2002036636A1 (en) | 2000-11-01 | 2001-10-31 | Cellulose ethers and method of preparing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR0115388A true BR0115388A (pt) | 2005-01-04 |
Family
ID=22925053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR0115388-9A BR0115388A (pt) | 2000-11-01 | 2001-10-31 | éteres de celulose e método de preparação dos mesmos |
Country Status (11)
| Country | Link |
|---|---|
| US (2) | US7022837B2 (pt) |
| EP (1) | EP1334132A1 (pt) |
| JP (1) | JP4195289B2 (pt) |
| CN (1) | CN1312184C (pt) |
| AR (1) | AR031183A1 (pt) |
| AU (1) | AU2002220070A1 (pt) |
| BR (1) | BR0115388A (pt) |
| CA (1) | CA2427698A1 (pt) |
| MX (1) | MXPA03003856A (pt) |
| NO (1) | NO20031988L (pt) |
| WO (1) | WO2002036636A1 (pt) |
Families Citing this family (54)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5989837A (en) * | 1998-07-13 | 1999-11-23 | Wisconsin Alumni Research Foundation | Immortalized human keratinocyte cell line |
| US8527495B2 (en) * | 2002-02-19 | 2013-09-03 | International Business Machines Corporation | Plug-in parsers for configuring search engine crawler |
| US7951935B2 (en) | 2002-11-14 | 2011-05-31 | Dharmacon, Inc. | siRNA targeting v-myc myelocytomatosis viral oncogene homolog (MYC) |
| US10011836B2 (en) | 2002-11-14 | 2018-07-03 | Thermo Fisher Scientific Inc. | Methods and compositions for selecting siRNA of improved functionality |
| US7612196B2 (en) | 2002-11-14 | 2009-11-03 | Dharmacon, Inc. | siRNA targeting cyclin-dependent kinase inhibitor 1B (p27, Kip1) (CDKN1B) |
| EP2305812A3 (en) * | 2002-11-14 | 2012-06-06 | Dharmacon, Inc. | Fuctional and hyperfunctional sirna |
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| US9839649B2 (en) | 2002-11-14 | 2017-12-12 | Thermo Fisher Scientific Inc. | Methods and compositions for selecting siRNA of improved functionality |
| US9719092B2 (en) | 2002-11-14 | 2017-08-01 | Thermo Fisher Scientific Inc. | RNAi targeting CNTD2 |
| US7635770B2 (en) * | 2002-11-14 | 2009-12-22 | Dharmacon, Inc. | siRNA targeting protein kinase N-3 (PKN-3) |
| US7592442B2 (en) * | 2002-11-14 | 2009-09-22 | Dharmacon, Inc. | siRNA targeting ribonucleotide reductase M2 polypeptide (RRM2 or RNR-R2) |
| US7781575B2 (en) | 2002-11-14 | 2010-08-24 | Dharmacon, Inc. | siRNA targeting tumor protein 53 (p53) |
| US9879266B2 (en) | 2002-11-14 | 2018-01-30 | Thermo Fisher Scientific Inc. | Methods and compositions for selecting siRNA of improved functionality |
| US7619081B2 (en) * | 2002-11-14 | 2009-11-17 | Dharmacon, Inc. | siRNA targeting coatomer protein complex, subunit beta 2 (COPB2) |
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| WO2006006948A2 (en) * | 2002-11-14 | 2006-01-19 | Dharmacon, Inc. | METHODS AND COMPOSITIONS FOR SELECTING siRNA OF IMPROVED FUNCTIONALITY |
| US8198427B1 (en) | 2002-11-14 | 2012-06-12 | Dharmacon, Inc. | SiRNA targeting catenin, beta-1 (CTNNB1) |
| US7691998B2 (en) * | 2002-11-14 | 2010-04-06 | Dharmacon, Inc. | siRNA targeting nucleoporin 62kDa (Nup62) |
| US20080268457A1 (en) * | 2002-11-14 | 2008-10-30 | Dharmacon, Inc. | siRNA targeting forkhead box P3 (FOXP3) |
| US20100113307A1 (en) * | 2002-11-14 | 2010-05-06 | Dharmacon, Inc. | siRNA targeting vascular endothelial growth factor (VEGF) |
| US9719094B2 (en) | 2002-11-14 | 2017-08-01 | Thermo Fisher Scientific Inc. | RNAi targeting SEC61G |
| US9771586B2 (en) | 2002-11-14 | 2017-09-26 | Thermo Fisher Scientific Inc. | RNAi targeting ZNF205 |
| US9228186B2 (en) | 2002-11-14 | 2016-01-05 | Thermo Fisher Scientific Inc. | Methods and compositions for selecting siRNA of improved functionality |
| US7703456B2 (en) * | 2003-12-18 | 2010-04-27 | Kimberly-Clark Worldwide, Inc. | Facemasks containing an anti-fog / anti-glare composition |
| US8173799B2 (en) | 2004-04-13 | 2012-05-08 | Hercules Incorporated | Raw cotton linters composition, method of making, and uses thereof |
| US7605250B2 (en) * | 2004-05-12 | 2009-10-20 | Dharmacon, Inc. | siRNA targeting cAMP-specific phosphodiesterase 4D |
| JP4131271B2 (ja) * | 2005-03-30 | 2008-08-13 | ソニー株式会社 | 情報処理装置および方法、並びにプログラム |
| JP5377816B2 (ja) * | 2005-06-16 | 2013-12-25 | 信越化学工業株式会社 | セルロースエーテルの製造方法 |
| EP1764373B1 (de) * | 2005-09-17 | 2016-04-27 | Dow Global Technologies LLC | Verfahren zur Herstellung von Methylhydroxyalkylcellulose mit einer geringen Anzahl gefärbter Partikel |
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| KR101739949B1 (ko) | 2009-05-28 | 2017-05-25 | 게페 첼루로제 게엠베하 | 화학적 크래프트 섬유로부터의 변형된 셀룰로즈 및 이들을 제조 및 사용하는 방법 |
| 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 |
| US9799416B2 (en) * | 2009-11-06 | 2017-10-24 | Terrapower, Llc | Methods and systems for migrating fuel assemblies in a nuclear fission reactor |
| CA2836895C (en) | 2011-05-23 | 2020-03-31 | Arthur J. Nonni | Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same |
| CN104302831A (zh) | 2012-01-12 | 2015-01-21 | Gp纤维素股份有限公司 | 具有降低的黄变特性的低粘性牛皮纸纤维及其制造和使用方法 |
| JP6242859B2 (ja) | 2012-04-18 | 2017-12-06 | ゲーペー ツェルローゼ ゲーエムベーハー | ビスコースおよび他の二次的繊維製品の製造のための、パルプを処理して、クラフトパルプの繊維への取り込みを改良するための界面活性剤の使用 |
| EP2733154B1 (en) * | 2012-11-16 | 2015-06-17 | Shin-Etsu Chemical Co., Ltd. | Method for producing purified low-substituted hydroxypropyl cellulose |
| US10151064B2 (en) | 2013-02-08 | 2018-12-11 | Gp Cellulose Gmbh | Softwood kraft fiber having an improved α-cellulose content and its use in the production of chemical cellulose products |
| MX364379B (es) | 2013-03-14 | 2019-04-24 | Gp Cellulose Gmbh | Un metodo para preparar una fibra kraft altamente funcional y de baja viscosidad, usando una secuencia de blanqueamiento acido, y una fibra hecha por el proceso. |
| CN105264143B (zh) | 2013-03-15 | 2017-09-22 | Gp纤维素有限责任公司 | 高渗透性纤维素纤维 |
| AU2014229512B2 (en) | 2013-03-15 | 2017-06-22 | Gp Cellulose Gmbh | A low viscosity kraft fiber having an enhanced carboxyl content and methods of making and using the same |
| KR102049872B1 (ko) * | 2013-08-28 | 2019-11-29 | 롯데정밀화학 주식회사 | 셀룰로오스 에테르의 제조 방법 |
| CN107667121A (zh) * | 2015-06-05 | 2018-02-06 | 陶氏环球技术有限责任公司 | 纤维素醚粉末 |
| CN106638092A (zh) * | 2016-09-14 | 2017-05-10 | 青岛大学 | 一种阻燃纸浆及阻燃纸的制备方法 |
| CA3040734A1 (en) | 2016-11-16 | 2018-05-24 | Gp Cellulose Gmbh | Modified cellulose from chemical fiber and methods of making and using the same |
| CN107915783A (zh) * | 2017-12-06 | 2018-04-17 | 浙江理工大学 | 一种以废纸为原料制备羧甲基纤维素的方法 |
| KR20200140196A (ko) * | 2019-06-05 | 2020-12-15 | 신에쓰 가가꾸 고교 가부시끼가이샤 | 분말상 펄프 및 이것을 사용한 셀룰로오스에테르의 제조 방법 |
| JP7212732B1 (ja) | 2021-08-10 | 2023-01-25 | フタムラ化学株式会社 | Ｉｉ型未修飾セルロース微細繊維、及びｉｉ型未修飾セルロース微細繊維並びにその成形体の製造方法 |
| JP7448590B2 (ja) | 2022-07-01 | 2024-03-12 | フタムラ化学株式会社 | Ｉｉ型未修飾セルロースビーズ及びその製造方法 |
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| DE146462C (pt) | ||||
| DE148342C (pt) | ||||
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-
2001
- 2001-10-31 EP EP01992723A patent/EP1334132A1/en not_active Withdrawn
- 2001-10-31 WO PCT/US2001/045482 patent/WO2002036636A1/en active Application Filing
- 2001-10-31 CN CNB018185134A patent/CN1312184C/zh not_active Expired - Fee Related
- 2001-10-31 MX MXPA03003856A patent/MXPA03003856A/es active IP Right Grant
- 2001-10-31 JP JP2002539394A patent/JP4195289B2/ja not_active Expired - Fee Related
- 2001-10-31 AU AU2002220070A patent/AU2002220070A1/en not_active Abandoned
- 2001-10-31 US US10/002,399 patent/US7022837B2/en not_active Expired - Lifetime
- 2001-10-31 CA CA002427698A patent/CA2427698A1/en not_active Abandoned
- 2001-10-31 BR BR0115388-9A patent/BR0115388A/pt not_active Application Discontinuation
- 2001-11-01 AR ARP010105121A patent/AR031183A1/es active IP Right Grant
-
2003
- 2003-05-02 NO NO20031988A patent/NO20031988L/no not_active Application Discontinuation
-
2005
- 2005-07-18 US US11/184,157 patent/US20050250940A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US20050250940A1 (en) | 2005-11-10 |
| US7022837B2 (en) | 2006-04-04 |
| CA2427698A1 (en) | 2002-05-10 |
| CN1503807A (zh) | 2004-06-09 |
| JP4195289B2 (ja) | 2008-12-10 |
| AU2002220070A1 (en) | 2002-05-15 |
| NO20031988D0 (no) | 2003-05-02 |
| US20020103368A1 (en) | 2002-08-01 |
| NO20031988L (no) | 2003-07-01 |
| EP1334132A1 (en) | 2003-08-13 |
| AR031183A1 (es) | 2003-09-10 |
| MXPA03003856A (es) | 2004-04-20 |
| WO2002036636A1 (en) | 2002-05-10 |
| JP2004536155A (ja) | 2004-12-02 |
| CN1312184C (zh) | 2007-04-25 |
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| B06F | Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette] |
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| B11E | Dismissal acc. art. 34 of ipl - requirements for examination incomplete | ||
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