EP2847232B1 PROCESS FOR OBTAINING CARBOXYMETHYL CELLULOSE FROM AGRO-INDUSTRIAL RESIDUES AND CARBOXYMETHYL CELLULOSE AND USE THEREOF
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基本信息:
- 专利标题： PROCESS FOR OBTAINING CARBOXYMETHYL CELLULOSE FROM AGRO-INDUSTRIAL RESIDUES AND CARBOXYMETHYL CELLULOSE AND USE THEREOF
- 申请号：EP13727506.1 申请日：2013-05-09
- 公开(公告)号：EP2847232B1 公开(公告)日：2018-09-12
- 发明人： STEGMILLER, Leonidio , REIS, Jose Antonino Alves e Silva , DE JESUS, Reinaldo Walmir , COSTA, Liliane Durans de Moraes , FERNANDES, Antonio Alberto Ribeiro , ALBUQUERQUE, Erica Dutra , CORRÊA, Jeferson da Silva , CUNHA, Mauricio Kuster , BASTOS, Marlon Christian Marianelli , FERNANDES, Patricia Machado Bueno , ZORZAL, Poliana Belisário
- 申请人： Vale S.A. , Universidade Federal Do Espírito Santo - Ufes , Stegmiller, Leonidio , Reis, Jose Antonino Alves E Silva , De Jesus, Reinaldo Walmir , Costa, Liliane Durans De Moraes , Fernandes, Antonio Alberto Ribeiro , Albuquerque, Erica Dutra , Corrêa, Jeferson Da Silva , Cunha, Mauricio Kuster , Bastos, Marlon Christian Marianelli , Fernandes, Patricia Machado Bueno , Zorzal, Poliana Belisário
- 申请人地址： Avenida Graça Aranha 26 - Centro Cep: 20030-000 Rio de Janeiro - RJ BR
- 专利权人： Vale S.A.,Universidade Federal Do Espírito Santo - Ufes,Stegmiller, Leonidio,Reis, Jose Antonino Alves E Silva,De Jesus, Reinaldo Walmir,Costa, Liliane Durans De Moraes,Fernandes, Antonio Alberto Ribeiro,Albuquerque, Erica Dutra,Corrêa, Jeferson Da Silva,Cunha, Mauricio Kuster,Bastos, Marlon Christian Marianelli,Fernandes, Patricia Machado Bueno,Zorzal, Poliana Belisário
- 当前专利权人： UNIVERSIDADE FEDERAL DO ESPIRITO SANTO - UFES
- 当前专利权人地址： UNIVERSIDADE FEDERAL DO ESPIRITO SANTO - UFES
- 代理机构： EP&C
- 优先权： US201261644856P 20120509
- 国际公布： WO2013166575 20131114
- 主分类号： C08B11/12
- IPC分类号： C08B11/12 ; C22B1/24 ; C22B1/244
摘要：
An advantageous and effective process for obtaining carboxymethyl cellulose (CMC) from agro-industrial residues, comprising the steps of a) Preparing the raw material, wherein the raw material is washed, dried, grounded and washed again; b) a pumping step, wherein the product obtained from the step a) is reacted with sodium hydroxide; c) a synthesis step, wherein consists in grounding the pulp; adding a solution of isopropanol and distilled water under stirring at room temperature; adding NaOH aqueous solution up to the alkalization of the mixture; adding monochloroacetic acid in isopropanol; filtrating; suspending in methanol solution and neutralizing with acetic acid. The CMC obtained from the process can be employed in a several industrial processes.