Method of recovering and refining filler from a lost wax composition
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 13, 2002
Grant Date -
Apr 4, 2002
app pub date -
Dec 4, 2001
filing date -
Sep 14, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
When a waste wax composition containing a filler is treated so that the filler is recovered and thus reclaimed, almost all the impurities coming from the lost wax casting mold may be removed, thereby recovering and thus refining at a high purity, a filler of a lost wax composition. Crude reclaimed filler is first produced by dissolving and dispersing a waste wax composition in an organic solvent, and separating a dissolved wax phase from a solids/wax-containing fraction. The crude reclaimed filler is then dispersed in an aqueous alkaline solution, so as to dissolve and thus remove alkali-soluble impurities, followed by a water-washing process.
First Claim
Other Claims data not available
