Process for removing volatiles from post-consumer recycled polyo

Details Process for removing volatiles from post-consumer recycled polyo Process for removing volatiles from post-consumer recycled polyo

1996-07-01

1998-06-16

Teskin, Fred

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

Synthetic resins

Treating polymer containing material or treating a solid...

528503, 264344, 34368, C08F 600

Patent

active

057672300

ABSTRACT:
A process comprising contacting PCR polyolefin chips containing volatile impurities with a heated gas at a superficial velocity sufficient to substantially reduce the volatile impurities. This process is found to cause the chips (i) to be essentially free of odors and (ii) subject to resin composition and prior use, to meet FDA regulations for direct food contact.

REFERENCES:
patent: 3177193 (1965-04-01), Scott
patent: 3177953 (1965-04-01), Goebel et al.
patent: 4974336 (1990-12-01), Hahn
patent: 5139694 (1992-08-01), Kmiec
patent: 5292863 (1994-03-01), Wang
patent: 5443652 (1995-08-01), Scarola et al.

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