Process for treating plastic product

Details Process for treating plastic product Process for treating plastic product

1993-05-28

1998-07-14

Tsang, Cecilia J.

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

588204, 588242, 562593, 204520, A62D 300

Patent

active

057807043

ABSTRACT:
A process for decomposing a thermoplastic polymer composition which comprises a polyhydroxycarboxylic acid base polymer as a primary component in an alkaline solution, recovering hydroxycarboxylic acid from the solution by electrodialysis or acid-precipitation and using the recovered hydroxycarboxylic acid for a polymer material, when desired, is provided.

REFERENCES:
patent: 4781809 (1988-11-01), Falcone, Jr.
patent: 4885387 (1989-12-01), Krochta
patent: 4909916 (1990-03-01), Koberstein et al.
patent: 5034105 (1991-07-01), Berglund et al.
patent: 5132456 (1992-07-01), King et al.

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