Reclaiming epsilon-caprolactam from nylon 6 carpet

Details Reclaiming epsilon-caprolactam from nylon 6 carpet Reclaiming epsilon-caprolactam from nylon 6 carpet

1992-09-11

1999-11-02

Merriam, Andrew E. C.

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

Synthetic resins

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

521 405, 523129, 528487, 525419, C08J 1114, C08J 1116

Patent

active

059771933

ABSTRACT:
.epsilon.-Caprolactam is continuously recovered from carpet made from nylon 6 face fibers and a backing. The carpet is fed to a separator to prepare scrap containing nylon 6 and auxiliary materials. The scrap from the separator is fed to a depolymerizing reactor to produce an .epsilon.-caprolactam containing distillate and more auxiliary materials. The .epsilon.-caprolactam in the distillate is separated from other volatiles and purified. The auxiliary materials are also recovered or re-used.

REFERENCES:
patent: 5169870 (1992-12-01), Corbin et al.

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