Process for the separation and reutilization of fabric materials

Details Process for the separation and reutilization of fabric materials Process for the separation and reutilization of fabric materials

1994-07-14

1996-07-09

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...

521 495, 521167, 528495, 528502, 4289033, 428903, 428224, 428235, 428239, 428284, 428289, 4284231, C08J 1104, C08J 1124

Patent

active

055345565

ABSTRACT:
A process for the separation of laminated components from polyurethane adhesive bonded composite laminates is provided. In this process, the laminates are treated with monofunctional aliphatic alcohols with 3 to 12 carbon atoms or mixtures thereof at temperatures of 100.degree. C. to 200.degree. C. to alcoholize the polyurethane. If necessary, water is added to the process. The alcoholysis product is removed and the components are separated from each other. This process is particularly useful in separating fabric components from expanded porous polytetrafluoroethylene membrane.

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patent: 4339358 (1982-07-01), Schutz
patent: 5338763 (1994-08-01), Munzamy et al.
patent: 5414021 (1995-05-01), Eddy
3.8 Alcoholysis--Chemical Recycling Process for Polyurethanes and Mixed Plastic Wastes--Gunter Bauer.

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