BRPI0517581A - hidrogéis de polìmero superabsorvente biodegradável e método de sua preparação - Google Patents

hidrogéis de polìmero superabsorvente biodegradável e método de sua preparação

Info

Publication number
BRPI0517581A
BRPI0517581A BRPI0517581-0A BRPI0517581A BRPI0517581A BR PI0517581 A BRPI0517581 A BR PI0517581A BR PI0517581 A BRPI0517581 A BR PI0517581A BR PI0517581 A BRPI0517581 A BR PI0517581A
Authority
BR
Brazil
Prior art keywords
preparation
superabsorbent polymer
polymer hydrogels
biodegradable superabsorbent
gel
Prior art date
Application number
BRPI0517581-0A
Other languages
English (en)
Inventor
Luigi Ambrosio
Luigi Nicolais
Alessandro Sannino
Original Assignee
Luigi Ambrosio
Luigi Nicolais
Alessandro Sannino
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
Application filed by Luigi Ambrosio, Luigi Nicolais, Alessandro Sannino filed Critical Luigi Ambrosio
Publication of BRPI0517581A publication Critical patent/BRPI0517581A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
    • C08J3/246—Intercrosslinking of at least two polymers
    • 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
    • C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
    • C08J3/075—Macromolecular gels
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/08—Cellulose derivatives
    • C08L1/26—Cellulose ethers
    • C08L1/28—Alkyl ethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/08—Cellulose derivatives
    • C08J2301/26—Cellulose ethers
    • C08J2301/28—Alkyl ethers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Biochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Medicinal Preparation (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Materials For Medical Uses (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

Hidrogéis de polimero superabsorvente biodeg radável e método de sua preparação. A presente invenção refere-se a método de preparação de hidrogel de polímero superabsorvente, que compreende as etapas de (i) retícula de solução aquosa geral a 3% de sal de sódio de carboximetilcelulose e hidroxietilcelulose com 5% de carbodjimida, na presença de catalisador ácido; (ii) lavagem do gel obtido pelo menos uma vez por meio de inchaço em solvente orgânico polar; e (iii) secagem do gel por meio de inversão de fases em não solvente para celulose. A presente invenção refere-se ainda a hidrogéis superabsorventes que podem ser obtidos por meio do mencionado método e seus usos.
BRPI0517581-0A 2004-12-29 2005-12-28 hidrogéis de polìmero superabsorvente biodegradável e método de sua preparação BRPI0517581A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000918A ITTO20040918A1 (it) 2004-12-29 2004-12-29 Idrogel polimerici superassorbenti biodegradabili e procedimento per la loro preparazione
PCT/IB2005/054412 WO2006070337A2 (en) 2004-12-29 2005-12-28 Biodegradable, super absorbent polymer hydrogels and a method for their preparation

Publications (1)

Publication Number Publication Date
BRPI0517581A true BRPI0517581A (pt) 2008-10-14

Family

ID=36615302

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0517581-0A BRPI0517581A (pt) 2004-12-29 2005-12-28 hidrogéis de polìmero superabsorvente biodegradável e método de sua preparação

Country Status (12)

Country Link
US (1) US20080227944A1 (pt)
EP (1) EP1836227B1 (pt)
JP (1) JP2008533215A (pt)
CN (1) CN101128488A (pt)
AT (1) ATE468357T1 (pt)
AU (1) AU2005320976A1 (pt)
BR (1) BRPI0517581A (pt)
CA (1) CA2591801A1 (pt)
DE (1) DE602005021400D1 (pt)
IT (1) ITTO20040918A1 (pt)
RU (1) RU2007128946A (pt)
WO (1) WO2006070337A2 (pt)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2004245567B2 (en) 2003-06-03 2011-06-23 Oxford University Innovation Limited Nutritional supplements and therapeutic compositions comprising (R)-3-hydroxybutyrate derivatives
US20070287630A1 (en) * 2006-06-12 2007-12-13 Driwater, Inc. Moisturizing agent with nutrients
JP5165217B2 (ja) * 2006-07-07 2013-03-21 生化学工業株式会社 ゲル状又はフィルム状組成物並びにその製造方法及び用途
US8633254B2 (en) * 2006-09-15 2014-01-21 Japan Atomic Energy Agency Preparation of gels derived from carboxymethyl cellulose alkali metal salt
JP4288618B2 (ja) * 2006-09-15 2009-07-01 独立行政法人 日本原子力研究開発機構 カルボキシメチルセルロースゲルの製造方法
WO2009022358A1 (en) * 2007-08-10 2009-02-19 Luigi Ambrosio Superabsorbent polymer hydro gels and a method of preparing thereof
AU2013204055C1 (en) * 2007-08-10 2016-12-15 Gelesis Llc Polymer hydrogels and methods of preparation thereof
AU2016219713B2 (en) * 2007-08-10 2018-03-29 Gelesis Llc Polymer hydrogels and methods of preparation thereof
US20100209708A1 (en) * 2007-09-17 2010-08-19 Basf Se Crosslinked cellulose beads
CN101177488B (zh) * 2007-10-26 2010-05-19 广东工业大学 一种快速溶胀的水凝胶制备
ES2730879T3 (es) 2008-01-04 2019-11-13 Univ Oxford Innovation Ltd Cuerpos de cetona y ésteres de cuerpos de cetona como agentes reductores de lípidos de la sangre
US8642654B2 (en) 2009-04-16 2014-02-04 Isis Innovation Limited Hydroxybutyrate ester and medical use thereof
KR101804354B1 (ko) * 2008-11-18 2017-12-04 젤레시스 엘엘씨 체중 관리 및 혈당 조절 개선을 위한 방법 및 조성물
CN101845123B (zh) * 2009-03-25 2011-12-21 青岛生物能源与过程研究所 一种生物基无机复合型吸水材料的制备方法
IT1393778B1 (it) 2009-04-06 2012-05-08 Sannino Procedimento per il trattamento di rifiuti.
GB201002983D0 (en) * 2010-02-22 2010-04-07 Tdeltas Ltd Nutritinal composition
CN101864036B (zh) * 2010-06-03 2011-07-20 济南大学 利用植物秸秆合成高吸水树脂的方法
CN102596132B (zh) 2010-08-20 2015-11-25 Sns纳米光纤技术公司 包括纳米纤维非织造织物的织物复合材料
CN102153665B (zh) * 2011-03-11 2012-06-27 陕西农产品加工技术研究院 一种以苹果渣为原料制备高吸水凝胶的方法
MX360730B (es) * 2011-06-07 2018-11-14 Gelesis Llc Método para la producción de hidrogeles.
CN102276854B (zh) * 2011-07-08 2013-01-02 西安交通大学 一种高强度天然高分子水凝胶的制备方法
CN102443180A (zh) * 2011-09-15 2012-05-09 复旦大学 一种制备纤维素复合气凝胶的方法
AU2013337308B2 (en) 2012-11-05 2018-06-21 Tdeltas Ketone bodies to protect tissues from damage by ionizing radiation
GB201304467D0 (en) 2013-03-12 2013-04-24 Tdeltas Ltd Compound for use in protecting skin
CN105246870A (zh) 2013-03-14 2016-01-13 伊希斯创新有限公司 (r)-3-羟基丁酸(r)-3-羟基丁酯的制备方法
CN106470689A (zh) 2014-06-20 2017-03-01 吉莱斯公司 用于治疗超重或肥胖症的方法
CN104448396B (zh) * 2014-11-28 2017-06-16 武汉大学 一种基于化学和物理交联的双网络纤维素凝胶系材料
WO2016123490A1 (en) 2015-01-29 2016-08-04 Gelesis Llc Method for producing hydrogels coupling high elastic modulus and absorbance
EP3144340A1 (en) 2015-09-17 2017-03-22 Solvay Acetow GmbH Polymer gels, method of preparation and uses thereof
KR102009909B1 (ko) * 2015-10-07 2019-08-21 주식회사 엘지화학 고흡수성 수지 단일 입자의 파쇄강도 측정 방법
MX380673B (es) 2016-04-25 2025-03-12 Gelesis Llc Método para tratar el estreñimiento
CN106963673B (zh) * 2017-02-16 2021-02-23 玉林祺钟商贸有限公司 一种睫毛液及其制备方法
MX395018B (es) 2017-07-28 2025-03-24 Kimberly Clark Co Particulas superabsorbentes nanoporosas
KR102651397B1 (ko) 2017-07-28 2024-03-27 킴벌리-클라크 월드와이드, 인크. 나노기공 초흡수성 입자를 함유하는 흡수 용품
CN107417934B (zh) * 2017-08-09 2020-01-07 武汉大学 一种具有力致光学异性结构的高强、高韧纤维素水凝胶及其制备方法
IT201700105979A1 (it) * 2017-09-21 2019-03-21 Giacomo Guerrini Biodegradable polymer-clay composite - Composito polimerico-argilloso biodegradabile
EP3773388A4 (en) 2018-04-02 2022-01-19 Polygreen Ltd. LIQUID POLYMER SOLUTION FOR THE TREATMENT OF NON-WOVEN WEBS
JP7445600B2 (ja) 2018-04-02 2024-03-07 ポリグリーン リミテッド スチレンマレイン酸コポリマーおよびバイオポリマーに基づく負荷下で高吸収性を有する生分解性超吸収性ポリマーの製造方法
MX2020012614A (es) 2018-06-27 2021-01-29 Kimberly Clark Co Particulas superabsorbentes nanoporosas.
CA3060477A1 (en) * 2018-11-09 2020-05-09 Windfield Solutions, Llc Hydrogels as rheology modifiers and methods of making the same
EP3880770B1 (en) 2018-11-13 2023-08-09 Polygreen Ltd. Polymeric composition for use as soil conditioner with improved water absorbency during watering of the agricultural crops
CN113017989A (zh) * 2021-02-26 2021-06-25 福建省明辉机械制造有限公司 一种超薄透气卫生巾制备方法
RU2766223C1 (ru) * 2021-03-10 2022-02-10 Федеральное государственное бюджетное учреждение науки Институт химии Дальневосточного отделения Российской академии наук (ИХ ДВО РАН) Способ получения биополимерных пленок
CN113248743B (zh) * 2021-06-18 2023-09-12 嘉兴映生生物有限公司 一种生物相容的可降解的三维纤维素凝胶及其制备方法和应用
KR102651835B1 (ko) * 2022-04-04 2024-03-29 경북대학교 산학협력단 셀룰로오스 기반 블렌딩 하이드로겔의 제조 방법, 이로부터 제조된 셀룰로오스 기반 블렌딩 하이드로겔 및 이를 포함하는 흡수성 물품
CN116114691B (zh) * 2023-01-17 2025-07-01 广西大学 一种pH响应型农药缓释水凝胶球及其制备方法

Family Cites Families (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589364A (en) * 1968-03-14 1971-06-29 Buckeye Cellulose Corp Bibulous cellulosic fibers
US3889678A (en) * 1973-12-07 1975-06-17 Personal Products Co Cellulose graft copolymer containing non-ionic and ionic polymer moieties as absorbent media in absorbent dressings
US4028290A (en) * 1975-10-23 1977-06-07 Hercules Incorporated Highly absorbent modified polysaccharides
US4404371A (en) * 1981-01-14 1983-09-13 Battelle Memorial Institute Carboxymethylcellulose with carbonate bridges and preparation thereof
US4525465A (en) * 1983-10-07 1985-06-25 Nippon Kayaku Kabushiki Kaisha Water-insoluble biospecific absorbent containing argininal derivative
US6610669B1 (en) * 1987-09-18 2003-08-26 Genzyme Corporation Water insoluble derivatives of polyanionic polysaccharides
US6174999B1 (en) * 1987-09-18 2001-01-16 Genzyme Corporation Water insoluble derivatives of polyanionic polysaccharides
US5017229A (en) * 1990-06-25 1991-05-21 Genzyme Corporation Water insoluble derivatives of hyaluronic acid
DE3801633A1 (de) * 1988-01-21 1989-07-27 Starchem Gmbh Verfahren zur herstellung von wasserabsorbierenden und wasserquellbaren polysaccharid-pfropfpolymeren
US5143646A (en) * 1989-01-13 1992-09-01 Fmc Corporation Polysaccharide resolving gels and gel systems for stacking electrophoresis
US5356883A (en) * 1989-08-01 1994-10-18 Research Foundation Of State University Of N.Y. Water-insoluble derivatives of hyaluronic acid and their methods of preparation and use
US5298584A (en) * 1990-12-14 1994-03-29 The United States Of America As Represented By The Secretary Of Agriculture Anionically dyeable smooth-dry crosslinked cellulosic material created by treatment of cellulose with reactive swelling agents and nitrogen based compounds
US5514379A (en) * 1992-08-07 1996-05-07 The General Hospital Corporation Hydrogel compositions and methods of use
US5304620A (en) * 1992-12-21 1994-04-19 Halliburton Company Method of crosslinking cellulose and guar derivatives for treating subterranean formations
EP0664699A1 (en) * 1993-08-13 1995-08-02 Vitaphore Corporation Hydrogel-based microsphere drug delivery systems
JP3404557B2 (ja) * 1993-09-30 2003-05-12 グンゼ株式会社 架橋ヒアルロン酸及びこれらの複合材料
US5919570A (en) * 1995-02-01 1999-07-06 Schneider Inc. Slippery, tenaciously adhering hydrogel coatings containing a polyurethane-urea polymer hydrogel commingled with a poly(N-vinylpyrrolidone) polymer hydrogel, coated polymer and metal substrate materials, and coated medical devices
DE19543368C2 (de) * 1995-11-21 1998-11-26 Stockhausen Chem Fab Gmbh Wasserabsorbierende Polymere mit verbesserten Eigenschaften, Verfahren zu deren Herstellung und deren Verwendung
AU3360197A (en) * 1996-07-01 1998-01-21 Universiteit Utrecht Hydrolysable hydrogels for controlled release
ZA978537B (en) * 1996-09-23 1998-05-12 Focal Inc Polymerizable biodegradable polymers including carbonate or dioxanone linkages.
GB2318577B (en) * 1996-10-28 2000-02-02 Johnson & Johnson Medical Solvent dried polysaccharide sponges
WO1998058686A1 (en) * 1997-06-24 1998-12-30 SCA Mölnlycke AB Absorbent polymer material based on renewable starting materials
EP1134232A1 (en) * 2000-03-16 2001-09-19 SCA Hygiene Products AB Polysaccharide-based superabsorbent film
JP2004503483A (ja) * 2000-06-09 2004-02-05 ジェンザイム、コーポレーション 低分子量ポリマー組成物
US6720389B2 (en) * 2000-09-20 2004-04-13 Nippon Shokubai Co., Ltd. Water-absorbent resin and production process therefor
CA2351253A1 (en) * 2000-11-10 2002-05-10 Groupe Lysac Inc./Lysac Group Inc. Crosslinked polysaccharide, obtained by crosslinking with substituted polyethylene glycol, as superabsorbent
JP4074905B2 (ja) * 2001-02-28 2008-04-16 大日本インキ化学工業株式会社 吸水性材料、その製造方法および吸水性物品
US20020172712A1 (en) * 2001-03-19 2002-11-21 Alan Drizen Antiemetic, anti-motion sustained release drug delivery system
CA2445086C (en) * 2001-05-01 2008-04-08 A.V. Topchiev Institute Of Petrochemical Synthesis Hydrogel compositions
JP2005517802A (ja) * 2002-02-15 2005-06-16 ゼットエムエス エルエルシー 生物医学用途のための重合方法および材料
CA2476656C (en) * 2002-02-21 2008-11-25 Encelle, Inc. Immobilized bioactive hydrogel matrices as surface coatings
AU2003228489A1 (en) * 2002-04-11 2003-10-27 Carbomer Biocompatible materials and probes
JP2005526972A (ja) * 2002-05-02 2005-09-08 シファーゲン バイオシステムズ， インコーポレイテッド 多糖系ヒドロゲルをコーティングした表面を有するバイオチップ
US6800712B2 (en) * 2002-10-07 2004-10-05 Steven William Doane Starch graft copolymers and method of making and using starch graft copolymers for agriculture
JP4459543B2 (ja) * 2003-03-17 2010-04-28 株式会社メドジェル 徐放性ハイドロゲル製剤
FR2861734B1 (fr) * 2003-04-10 2006-04-14 Corneal Ind Reticulation de polysaccharides de faible et forte masse moleculaire; preparation d'hydrogels monophasiques injectables; polysaccharides et hydrogels obtenus
DE10337012A1 (de) * 2003-08-12 2005-03-10 Wolff Cellulosics Gmbh & Co Kg Celluloseetherzusammensetzung für die Extrusion mineralischer Formkörper sowie ein Verfahren zur Extrusion mineralischer Formkörper unter Verwendung dieser Celluloseetherzusammensetzung
US7425595B2 (en) * 2003-12-15 2008-09-16 Absorbent Technologies, Inc. Superabsorbent polymer products including a beneficial additive and methods of making and application
RU2369408C2 (ru) * 2004-07-09 2009-10-10 Ферросан А/С Гемостатическая композиция, включающая гиалуроновую кислоту
DE102005034420A1 (de) * 2004-12-23 2006-07-06 Ossacur Ag Gelartiges Material zur Füllung von Knochen- und/oder Knorpeldefekten

Also Published As

Publication number Publication date
RU2007128946A (ru) 2009-02-10
WO2006070337A9 (en) 2007-06-21
EP1836227A2 (en) 2007-09-26
CN101128488A (zh) 2008-02-20
ATE468357T1 (de) 2010-06-15
WO2006070337A3 (en) 2007-03-01
ITTO20040918A1 (it) 2005-03-29
DE602005021400D1 (de) 2010-07-01
WO2006070337A2 (en) 2006-07-06
US20080227944A1 (en) 2008-09-18
CA2591801A1 (en) 2006-07-06
AU2005320976A1 (en) 2006-07-06
JP2008533215A (ja) 2008-08-21
EP1836227B1 (en) 2010-05-19

Similar Documents

Publication Publication Date Title
BRPI0517581A (pt) hidrogéis de polìmero superabsorvente biodegradável e método de sua preparação
Zhang et al. Tailoring degradation rates of silk fibroin scaffolds for tissue engineering
CN104387597B (zh) 化学和物理双重交联的高强度甲壳素凝胶系材料及其制备方法
CN104861179B (zh) 一种羽毛角蛋白‑海藻酸钠复合高分子双敏感水凝胶的制备及作为药物载体的应用
Kaur et al. Waste to high-value products: The performance and potential of carboxymethylcellulose hydrogels via the circular economy
Karimi et al. Chitosan hydrogels cross-linked with tris (2-(2-formylphenoxy) ethyl) amine: Swelling and drug delivery
CN104892864B (zh) 一种角蛋白‑海藻酸钠复合微孔凝胶的制备及作为药物载体的应用
Wang et al. Effects of cellulose nanofibrils on dialdehyde carboxymethyl cellulose based dual responsive self-healing hydrogel
WO2006056204A8 (en) Method of cross-linking hyaluronic acid with divinylsulfone
CN105713106B (zh) 一种海藻酸钠双交联水凝胶及其制备方法与应用
BRPI0507294B8 (pt) processo de fabricação de um gel reticulado biocompatível, gel, e, utilização do gel
ATE476450T1 (de) Vernetzte polysaccharidzusammensetzung
CN103524759B (zh) 动物角蛋白基高分子水凝胶的制备方法及作为药物载体的应用
DE602007004212D1 (de) Hydrogele von polysaccharidmischungen für das gewebe-engineering und als wirkstoffträger
CN104027833A (zh) 一种壳聚糖水凝胶敷料的制备方法
Wang et al. Stretchable, biodegradable dual cross-linked chitin hydrogels with high strength and toughness and their potential applications in flexible electronics
Zhang et al. Improved method for synthesis of cysteine modified hyaluronic acid for in situ hydrogel formation
CN105601952B (zh) 一种聚天冬氨酸复合水凝胶及其制备方法
CN104130540A (zh) 一种纤维素基导电水凝胶及其制备方法与应用
CN1898315B (zh) 半互穿聚合物网络组合物
CN105646894B (zh) 一种基于聚酰胺-胺型树枝状分子的水凝胶的制备方法
Zhang et al. Improving the mechanical properties of 3D printed GelMA composite hydrogels by tannic acid
CN108276591A (zh) 一种纤维素溶液及其制备方法
Yu et al. Cu+-containing physically crosslinked chitosan hydrogels with shape memory.
ITMI20020902A1 (it) Processo per preparare membrane ionomeriche

Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE AS 5A E 6A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2160 DE 29/05/2012.