Societa' Italiana Additivi Per Carburanti S.r.l.

Ausimont S.r.l.

Societa' Italiana Additivi Per Carburanti

Ettore Santoro

Luciano Canova

Paolo Falchi

Enrico Albizzati

Federico Milani

Enrico Dalcanale

Stefanio Bonsignore

Luciano Bonoli

The filter plugging point and the pour-point at low temperatures of compositions based on liquid hydrocarbons from refining are improved by means of the addition, preferably in solution, of a mixture of an ethylene copolymer with another copolymerizable monomer and of an imidized acrylic polymer.

Compositions of liquid hydrocarbons from refining endowed with improved

The fluidity at low temperatures of compositions based on refinery liquid hydrocarbons can be improved by adding, preferably under solution, [l.sub.4 ]-methacyclophanes with substituents, obtained from the condensation reaction of a resorcin with a product containing an aldehyde group, followed by a reaction with halides of organic acids or alkyl halides.

Compositions of refinery hydrocarbons endowed with improved fluidity at

The fluidity at low temperatures of compositions based on liquid hydrocarbons from refining is improved by the addition, preferably in solution, of ethylene/propylene/(conjugated diene) copolymers or terpolymers, containing 20-55% of propylene, optionally degraded by thermo-oxidation, and structurally characterized by values of at least one of X.sub.2 and X.sub.4 parameters, which are equal to, or lower than, about 0.02, indicative of the absence in the polymeric chain of propylene linking inversions.

Compositions of hydrocarbons from refining, endowed with improved

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Paderno Dugnano, Italy

Ettore Santoro