Snamprogetti

Euron S.p.a.

Giuseppe Mancini

Luigi Imparato

Dario Schillani

Franco Berti

A process for preparing bituminous mixtures with added thermoplastic polymer is described, the mixtures having storage stability and improved general properties. The process consists of treating the bitumen-polymer mixtures with an unsaturated dicarboxylic aliphatic acid or with the relative anhydride.

Bitumen-polymer mixtures and a process for their preparation

Organic esters, to be employed to make up lubricating compositions are disclosed, said esters being the products of the reaction between a diol and a triol, on the one hand, and a mixture of saturated monocarboxylic acids, on the other hand. The ratios of the diol to the triol (molarly) and the structure and number of carbon atoms of the saturated monocarboxylic acids are critical. Critical values are given, as well as examples of practical use; the viscosity and viscosity index properties of the novel esters out do those of the conventional esters to a degree.

Organic ester for use in lubricant compositions

An ester, adapted for use as a component of a multigrade lubricating oil, is prepared by reacting:

Organic esters for lubricating compositions

This invention relates to esters prepared by reacting

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Melegnano, Italy

Giuseppe Mancini