Method and apparatus for removing additives from...

Chemical apparatus and process disinfecting – deodorizing – preser – Physical type apparatus – Means separating or dissolving a material constituent

Reexamination Certificate

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Details

C422S257000, C422S260000, C422S287000, C422S288000, C422S309000, C425S317000, C264S211210, C264S037100, C264S920000

Reexamination Certificate

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10469712

ABSTRACT:
There is provided a treatment method of efficiently separating an additive component from a resin component for the purpose of treating and recycling a thermoplastic resin composition containing an additive. The treatment method includes heating and agitating the thermoplastic resin composition containing the additive together with a solvent for dissolving at least part of the additive at a temperature ranging from the glass transition temperature of the thermoplastic resin to the boiling point of the solvent inclusive, and separating and recovering the solvent in a liquid state in which at least part of the additive is dissolved, so that at least part of the additive is separated and removed from the thermoplastic resin composition.

REFERENCES:
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patent: 5811036 (1998-09-01), Takahashi et al.
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patent: 2001-072795 (2001-03-01), None
English translation of Japanese Search Report for Application No. PCT/JP02/01768 dated May 29, 2003.

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