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Title:
PROCESS FOR OBTAINING CARBOXYMETHYL CELLULOSE FROM AGRO-INDUSTRIAL RESIDUES AND CARBOXYMETHYL CELLULOSE AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2013/166575
Kind Code:
A9
Abstract:
The present invention describes 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 present invention also relates to the CMC obtained from the said process which can be employed in a several industrial processes.

Inventors:
STEGMILLER LEONIDIO (BR)
REIS JOSE ANTONINO ALVES E SILVA (BR)
DE JESUS REINALDO WALMIR (BR)
COSTA LILIANE DURANS DE MORAES (BR)
FERNANDES ANTONIO ALBERTO RIBEIRO (BR)
ALBUQUERQUE ERICA DUTRA (BR)
CORR A JEFERSON DA SILVA (BR)
CUNHA MAURICIO KUSTER (BR)
BASTOS MARLON CHRISTIAN MARIANELLI (BR)
FERNANDES PATRICIA MACHADO BUENO (BR)
ZORZAL POLIANA BELISÁRIO (BR)
Application Number:
PCT/BR2013/000159
Publication Date:
July 03, 2014
Filing Date:
May 09, 2013
Export Citation:
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Assignee:
VALE SA (BR)
UNIV FED DO ESPÍRITO SANTO (BR)
STEGMILLER LEONIDIO (BR)
REIS JOSE ANTONINO ALVES E SILVA (BR)
DE JESUS REINALDO WALMIR (BR)
COSTA LILIANE DURANS DE MORAES (BR)
FERNANDES ANTONIO ALBERTO RIBEIRO (BR)
ALBUQUERQUE ERICA DUTRA (BR)
CORR A JEFERSON DA SILVA (BR)
CUNHA MAURICIO KUSTER (BR)
BASTOS MARLON CHRISTIAN MARIANELLI (BR)
FERNANDES PATRICIA MACHADO BUENO (BR)
ZORZAL POLIANA BELISÁRIO (BR)
International Classes:
C08B11/12; A23L29/20; C22B1/24; C22B1/244
Attorney, Agent or Firm:
VEIRANO E ADVOGADOS ASSOCIADOS (3477 16° andar,Itaim Bibi, CEP: -133 São Paulo, BR)
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