Method and apparatus for the production of polyamide 6 from poly

Details Method and apparatus for the production of polyamide 6 from poly Method and apparatus for the production of polyamide 6 from poly

1995-05-10

1997-07-08

Michl, Paul R.

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

Synthetic resins

Process of treating scrap or waste product containing solid...

528499, 528500, 422131, 4221841, 21050025, 210806, 210808, C08J 1114, B01D 3900

Patent

active

056461917

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.

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patent: 5359062 (1994-10-01), Fuchs et al.

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