Method for removing AlCl.sub.3 -based catalyst residues from polymer mixtures
OwnerAmbrogio Magni, Attilio Sioliinventors
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Abstract
A method is described for removing catalyst residues comprising AlCl.sub.3 and/or its complexes from polymer products deriving from the (co)polymerization of olefinic cuts, the method comprising bringing the polymerized mass into contact with organometallic compounds, treating the resultant mixture with water or with aqueous acid or basic solutions, and separating the organic phase, which is substantially free of inorganic residues.
Claims14
A method for removing catalyst residues comprising AlCl.sub.3 and/or its complexes from polymer products deriving from the Friedel-Crafts polymerization of olefinic hydrocarbons or mixtures thereof, said method comprising:
- a) treating the polymerized mixture with an organometallic compound;
- b) treating the resultant mixture with water or an aqueous acid or basic solution to obtain an aqueous phase and an organic phase;
- and
- c) separating the desired organic phase.
Dependencies are inferred from the claim text.