Method and apparatus for the production of polyamide 6 from polymide waste
AssigneePolymer Engineering GmbH
InventorsKarl-Heinz Wiltzer, Peter Lausmann, Baldur Ebert
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Abstract
In a method for the depolymerization and reprocessing of material which consists of polyamide 6 waste and/or oligomer-containing polyamide 6 waste and/or oligomer-containing lactam residues and/or oligomer-containing lactam by hydrolysis in a pressure reactor with the addition of water, the material is melted and the melt is conducted continuously at predetermined temperature through the pressure reactor the inside pressure of which is controlled by the dosaged feeding of water or steam.
Claims10
An apparatus for the production of polyamide from polyamide waste which comprises a melt extruder, a first adjustable pump connected to the melt extruder, a pressure reactor having a top and a bottom and an upper region and a lower region, the pressure reactor having a first inlet at the top, the first inlet connected to the first adjustable pump, a source of water in liquid or vapor form, a second adjustable pump connected to the source of water, a second inlet in the upper region of the pressure reactor and connected to the second adjustable pump and an outlet in the lower region of the pressure reactor.
Dependencies are inferred from the claim text.