Method for removing polyvinyl coatings from metal with tetrahydr

Details Method for removing polyvinyl coatings from metal with tetrahydr Method for removing polyvinyl coatings from metal with tetrahydr

1982-04-08

1984-02-14

Marantz, Sidney

Cleaning and liquid contact with solids

Processes

Paints, varnishes, lacquers, or enamels, removal

134 251, B08B 308, B08B 700

Patent

active

044314582

ABSTRACT:
The method of recovering metal from a coated condition wherein the same is encased within polyvinyl chloride which comprises disposing the coated metal upon a mesh or other perforated support within a vessel, immersing the same in a bath of tetrahydrofuran under ambient conditions, then closing the vessel containing said mesh or perforated support and permitting the treated material to remain therein in immersed state for a period of time commensurate with the quantity of material to be de-coated and with the thickness of such coating. However, with customary coatings in the order of approximately 1/4" to 3/8", a period of about one hour is adequate and such should be relatively indicative of the periods of time necessary with thicker coatings.

REFERENCES:
patent: Re27432 (1972-07-01), Torrenzano
patent: 3475218 (1969-10-01), Torrenzano
patent: 3975208 (1976-08-01), Tate
patent: 3997360 (1976-12-01), Testa
patent: 3998655 (1976-12-01), Benetta
patent: 4366006 (1982-12-01), Ferer

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