Eliminating acetaldehyde from crystalline polyethylene terephtha

Details Eliminating acetaldehyde from crystalline polyethylene terephtha Eliminating acetaldehyde from crystalline polyethylene terephtha

1979-04-13

1980-10-28

Phynes, Lucille M.

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

Synthetic resins

Treating polymer containing material or treating a solid...

264 87, 264176F, 528272, C08G 6374

Patent

active

042308194

ABSTRACT:
The invention relates to the removal of acetaldehyde from crystalline polyethylene terephthalate granules by passing a dry inert gas through a bed of resin at a temperature of 170.degree. C. to 250.degree. C. for a time sufficient to remove the aldehydes.

REFERENCES:
patent: 4142040 (1979-02-01), Jabarin et al.
patent: 4154920 (1979-05-01), Jabarin

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