POROUS PEEK ARTICLE AS AN IMPLANT
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United States of America Patent
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Dec 20, 2012
app pub date -
Dec 23, 2010
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Dec 23, 2009
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Abstract
The present invention refers to a porous PEEK-type polymer article comprising a porous PEEK-type polymer structure and presenting at least a trimodal pore distribution. The invention describes a process for the production of said porous PEEK-type polymer article comprising: a) contacting a PEEK-type polymer with a composition comprising at least a organic solvent, b) heating at a temperature at which the PEEK-type polymer is dissolved, c) adding at least a porogen agent, d) cooling the mixture obtained in c) at a temperature at least equal or lower than the temperature at which the PEEK-type polymer precipitates, e) forming said cooled mixture into a shaped article, f) removing the organic solvent and the porogen agent, and g) recovering the PEEK-type polymer article.
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