Acid-modified, aromatic hydrocarbon resins and method for their production
AssigneeRutgerswerke Aktiengesellschaft
InventorsWolfgang Luecke, Herbert Beneke, Bodo Friedrich
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Abstract
Aromatic hydrocarbon resins are disclosed prepared from aromatic, unsaturated hydrocarbons and a melted aromatic carboxylic acid polymerized in the presence of a Friedel-Crafts catalyst. The resin may be used in printing inks, for paper sizing, for coatings and other applications where natural resins have been used.
Claims15
An acid modified, aromatic hydrocarbon resin which is the reaction product of an aromatic, unsaturated hydrocarbon with a melted aromatic carboxylic acid in the presence of a Friedel-Crafts catalyst.
A method for producing aromatic hydrocarbons modified with aromatic carboxylic acids, comprising polymerizing an aromatic, unsaturated hydrocarbon with a melted aromatic carboxylic acid in the presence of Friedel-Crafts catalyst and at an elevated temperature, following the polymerizing step, washing the reaction mixture with hot water and treating the washed product with an aqueous alkali solution, whereupon the aqueous phase is isolated and obtaining the desired resin product by acidification.
Dependencies are inferred from the claim text.