Hoechst Aktiengesellschaft

Robert Willms

Alexander Ohorodnik

Karl Kaiser

Bernhard Kuxdorf

Horst Semmler

Hermann Vierling

Joachim Hardel

Hans W Keuper

The disclosure relates to a process for making fine particulate, non-agglomerating chloropolyethylene by subjecting pulverulent polyethylene to a chlorination reaction in aqueous or aqueous/hydrochloric acid-suspension with chlorine gas at a temperature of about 20.degree. to 140.degree. C. in the presence of silicic acid and silicon oil, separating, washing and drying the chloropolyethylene. More particularly, the disclosure provides for the chlorination to be terminated and for the aqueous hydrochloric acid-suspension of chloropolyethylene to be then intensively mixed with an aqueous or aqueous/hydrochloric acid-dispersion having talc as well as an orthophosphoric acid mono- and/or diester or a polysiloxane by means of an emulsifier dispersed in it, and for the chloropolyethylene to be separated from the mixture, to be washed and dried.

Process for making fine particulate non-agglomerating chloropolyethylene

The invention relates to an improved process, wherein polyolefins are freed from saturated liquid residual hydrocarbons with the aid of water and steam. The improvement comprises

Process and apparatus for the continuous removal of residual

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Hurth-Knapsack, Germany

Robert Willms