Polymer layer recovery from a multilayered chip material

Details Polymer layer recovery from a multilayered chip material Polymer layer recovery from a multilayered chip material

1985-11-27

1986-12-16

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

521 48, 521 485, 528489, C08J 1122

Patent

active

046297804

ABSTRACT:
A polymer layer of polyester or polyvinyl chloride is recovered from a multilayered scrap or waste chip material by contacting the chip material with an aqueous solution containing a base metal hydroxide and a reagent selected from the group consisting of a salt, an amine, and an oxidizing agent. The removal process is accelerated by using, either singularly or in combination, an alkyl dimethyl benzyl ammonium chloride, heat, or agitation. Thereafter the polymer layer is isolated and recovered.

REFERENCES:
patent: 3652466 (1972-03-01), Hittel
patent: 4033907 (1977-07-01), Wolf
patent: 4324705 (1982-04-01), Seto

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