C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/402
C08F 240/00 (2006.01)
Patent
CA 1080891
ABSTRACT OF THE DISCLOSURE Petroleum resins are prepared by subjecting to pre- polymerization a hydrocarbon fraction containing olefins and diolefins, having a boiling range of from 30° to 300°C, in the presence of activated clays, recovering from the pre-polymerization products a selected hydrocarbon fraction having a boiling point not exceeding 250°C, mixing this selected fraction with a hydrocarbon fraction contai- ning unsaturated hydrocarbons with an average of 5 carbon atoms per molecule, subjecting the resulting mixture to polymerization in the presence of a Friedel-Crafts catalyst and recovering the petroleum resins from the polymerization products. These petroleum resins form homogeneous mixtures with rubber.
281909
Carpaneti Edoardo
Crespolini Giancarlo
Pitzalis Mario
Vargiu Silvio
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