Recycling of plastic waste containing a mixture of polyurethanes

Details Recycling of plastic waste containing a mixture of polyurethanes Recycling of plastic waste containing a mixture of polyurethanes

1996-02-28

2000-05-30

Seidleck, James J.

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

Synthetic resins

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

521 49, 521 495, 528 76, 528 85, 528494, 528495, C08J 1124

Patent

active

060691824

ABSTRACT:
A process for recycling plastic waste containing a mixture of polyurethanes and other plastics, comprises reacting the plastic waste with an alcohol mixture comprising at least one low-molecular-weight, at least difunctional alcohol and at least one polyether-polyol, and then separating the resultant glycolysis polyol mechanically from the other plastic waste.

REFERENCES:
patent: 4159972 (1979-07-01), Braslaw et al.
patent: 5338763 (1994-08-01), Munzamy et al.
patent: 5357006 (1994-10-01), Gassan et al.
patent: 5508312 (1996-04-01), Munzmay et al.
patent: 5556889 (1996-09-01), Naber et al.

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