Procedure for the preparation of colorless hydrocarbon resins
AssigneeEnichem Anic S.p.A.
InventorsAmbrogio Magni, Attilio Sioli, Claudia Andena, Mario Ponzinibbi
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Abstract
A procedure is described for the preparation of colorless hydrocarbon resins having a higher thermal stability than similar products in the known art. The procedure involves the treatment of polymeric mixtures deriving from the (co)polymerization by means of Friedel-Crafts catalysts of hydrocarbons or mixtures of ethylenically unsaturated hydrocarbons, with an organometallic compound of Magnesium and/or Lithium, the separation of the inorganic residues and the final removal of the volatile organic products.
Claims12
Method for decoloring polymeric resins obtained by polymerizing mixtures of ethylenically unsaturated hydrocarbons in the presence of Friedel-Crafts catalyst, comprising
- a) treating polymeric mixtures obtained by polymerizing mixtures of ethylenically unsaturated hydrocarbons in the presence of Friedel-Crafts catalyst with an organometallic compound of lithium and/or magnesium;
- b) treating the resulting mixture with water or an acid or base aqueous solution;
- c) separating and recovering the organic phase.
Dependencies are inferred from the claim text.