Water solvent extraction degreasing method and molded products produced therewith
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United States of America Patent
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Mar 2, 1999
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N/A
app pub date -
Jan 2, 1997
filing date -
Mar 14, 1994
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Abstract
A water solvent extraction degreasing method capable of reducing degreasing time without consideration of abrupt decomposition/vaporization and swelling caused by heat. An organic binder is removed from a molded product that is produced by a powder material mixed with the organic binder and this organic binder contains at least one water-soluble organic compound and at least one water-insoluble thermoplastic resin. The degreasing step of this method includes a water solvent extraction step for extracting the water-soluble organic compound from the organic binder contained in the molded product, using water as a solvent.
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