发明名称 |
Filamento à base de ácido hialurônico sob forma ácida livre e seu método de obtenção |
摘要 |
<p>The present invention relates to a method for preparing by wet spinning a continuous filament based on hyaluronic acid in free acid form, notably soluble in water. The preparation method according to the invention comprises the following steps: a) preparing a spinnable aqueous solution of hyaluronic acid or of a hyaluronic acid salt, preferably a sodium hyaluronate solution; b) extruding said solution to an extrusion die; c) forming the filament by passing the extruded solution into a bath of acetic acid, concentrated to more than 80%, drawing and drying. The invention also relates to a filament based on hyaluronic acid in free acid form, said filament having swelling properties in water and physiological liquids and moreover being solubilizable in water under certain conditions.</p> |
申请公布号 |
BRPI0817567(A2) |
申请公布日期 |
2015.04.07 |
申请号 |
BR2008PI17567 |
申请日期 |
2008.09.26 |
申请人 |
UNIVERSITE CLAUDE BERNARD LYON I;CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) |
发明人 |
ALAIN DOMARD;LAURENT DAVID;FLORENCE DUPASQUIER |
分类号 |
D01D5/06;A61L15/00;A61L15/28;C08B37/08;D01D5/00;D01F2/00;D01F9/00;D01F11/00;D01F11/02 |
主分类号 |
D01D5/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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