Process for producing porous polymer materials
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United States of America Patent
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Aug 20, 2002
Grant Date -
Feb 21, 2002
app pub date -
May 30, 2001
filing date -
Aug 18, 2000
priority date (Note) -
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Abstract
The present invention provides a process for producing porous polymer materials. In the present invention, a polymer material and a soluble material are mixed in their solid states. The surface of the polymer material is partially dissolved and fused by introducing a solvent. The present invention makes use of a pressure difference while introducing a non-solvent into the polymer material to solidify and resolve the solved polymer material. Then, a substantial amount of water is used to wash the inside soluble material out. Therefore, the porous polymer materials with high porosity and interconnecting pores inside the materials are produced massively and rapidly.
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