Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including solid – extended surface – fluid contact reaction...
Reexamination Certificate
2009-02-20
2010-10-05
Choi, Ling-Siu (Department: 1796)
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including solid, extended surface, fluid contact reaction...
C422S122000, C422S129000, C422S255000, C510S109000, C510S188000, C528S480000, C528S488000, C521S040000
Reexamination Certificate
active
07807117
ABSTRACT:
The present invention addresses a problem with conventional techniques for recycling electrical equipment that have a hardened epoxy resin and electroconductive material where a catalyst is degraded to an extent that it can no longer be reused when water is present in a dissolving system. Moisture, when present in the dissolving system for treating electrical equipment including electroconductive material of aluminum, may react with aluminum to produce an aluminate compound which is transformed into aluminum oxide (alumina) under heating, which, in turn, may cause abnormal temperature rise to melt aluminum. This may be accompanied by formation of hydrogen which can cause danger of explosion. The present invention manages moisture content in a dissolving system by drying an object to be treated with a catalyst and a solvent prior to the dissolving treatment.
REFERENCES:
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patent: 6962628 (2005-11-01), Shibata et al.
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Derwent abstract of French Patent FR2263995.
Maekawa, et al. “FRP Recycling Technology Involving Depolymerization of Unsaturated Polyester Under Ordinary Pressure,” Hitachi Chemical Technical Report No. 42 (2004).
Kaizu Tomohiro
Sato Kohei
Choi Ling-Siu
Hitachi Industrial Equipment Systems Co. Ltd.
Tischler Frances
Townsend and Townsend / and Crew LLP
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