NEUTRALISATION BY FILLING AGENT Russian patent published in 2014 - IPC C08J11/04 C08K3/22 C08K3/26 C08L101/00 C08L23/04 B09B3/00 B29B17/00 

FIELD: chemistry.

SUBSTANCE: at the first stage a polymer material to be recycled is loaded into a cutting-compacting device, equipped with a mixing or crushing device, after which the polymer particles are continuously moved and heated in the cutting-compacting device. In order to neutralise the formed products of destruction or decomposition into the softened but not yet melted polymer added is a solid, powder-like, preferably mineral, filling agent, usually used for dilution or as a diluting agent, for instance chalk, diatomaceous earth, zinc oxide, talc, activated coal and/or carbonate, in particular calcium carbonate, in an amount, at least, corresponding to the expected acidic or basic impact. The mixture is continuously mixed, moved, if necessary, crushed and supported in the form of separate pieces or freely flowing for a definite time.

EFFECT: method makes it possible to effectively neutralise acidic and basic compounds, which results in the reduction of corrosion and increase of the service term of machines.

30 cl, 2 ex