PROCEDURE FOR THE RECOGNITION OF RAILWAY FORMAL EQUIPMENT FROM STABILISED FORMAL POLYOCIMETYLES.

摘要

Method of removing odorous formaldehyde from stabilized shaped polyoxymethylenes in which an inert gas is caused to flow over stabilized and shaped solid polyoxymethylenes at elevated temperatures not high enough to cause sticking or fusion of the polyoxymethylene, until substantially all of the volatile formaldehyde has been removed.