Eni S.p.a.

Versalis S.p.a.

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Riccardo Po'

Riccardo Po

Alessandro Casnati

Giulio Assanelli

Francesco Sansone

Alberto Roselli

Alessandro Burlini

Claudio Cavallo

Riccardo Rausa

Piero Baglioni

Andrea Pucci

Michele Laus

Emiliano Fratini

Paolo Cambise

Giuseppe Iasilli

Giovanni Ferraro

Katia Sparnacci

Andrea Magini

Antonio Amico

Luca Serbolisca

Orazio Pianta

A lipophilic copolymer including polar multi-blocks having general formula (I):[(BA)](AC)  (I)wherein:

Lipophylic copolymers comprising polar multi-blocks, process for the preparation thereof and use in lubricating compositions

A friction reducing additive is described formed by a mixture that is obtainable by autocatalytic condensation reaction of fatty acids with alkanolamines. The mixture includes an amide, one or more esters of carboxylic acids, and an oxazoline in an amount greater than 7% by weight with respect to the total weight of the mixture, wherein the additive may be used both in lubricants and in fuels.

Friction reducing additives and process for preparing the same

A method for the assessment of the dispersing capacity of new and used lubricating compositions, in particular for internal combustion engines, and of additives for lubricating compositions, includes the steps of: providing a homogeneous dispersion of at least one carbonaceous particulate in a composition to be tested, consisting of a lubricating composition or a fraction or component thereof, acquiring at least one micrographic image of a sample of said homogeneous dispersion, deposited on an observation support, and calculating the lacunarity of the acquired image as a parameter representative of the degree of dispersion of the particulate in the composition.

Method for the assessment of the dispersing capacity of new or used lubricating compositions and of additives for lubricating compositions

There are mixtures containing calixarenes of formula (I) with a reduced alkyl phenol and linear oligomer content and a preparation process thereof: wherein: Furthermore, there are detergent compositions containing overbased metal salts of calixarenes, a preparation process thereof, and a use thereof in lubricant compositions.

Mixture containing calixarenes, process for the production thereof and use thereof for preparing detergent compositions for lubricants

Hydrogenated polymers with a radial structure having a core made up of calixarenes of the general formula (I), to the core of which is linked a number P of hydrogenated linear polymer segments selected from: &#x2014;hydrogenated homopolymers or co-polymers of conjugated dienes; or&#x2014;hydrogenated co-polymers of said conjugated dienes and monoalkenyl arenes, and&#x2014;mixtures thereof said formula (I) in which: &#x2014;R, R, Rand Rare independently selected from hydrogen; a group containing carbon and hydrogen; a group also containing heteroatoms in addition to carbon and hydrogen; a group also containing silicon in addition to carbon, hydrogen and heteroatoms; &#x2014;one of the two substituents Rand Ris hydrogen, while the other may be hydrogen or alkyl, with a number of carbon atoms between 1 and 6, preferably methyl and ethyl; &#x2014;n is an integer in the range between 4 and 16. 

Hydrogenated polymers with a radial structure having a core based on calixarenes and use thereof in lubricant compositions

The present invention relates to a metal compound of calixarene not containing sulfur and dispersible in oil, which can be partially salified, or neutral, or basic or overbased, said calixarene having general formula (I) in which: a) R, R, Rand Rare independently selected from hydrogen, or a group containing carbon and hydrogen, or a group containing in addition to carbon and hydrogen also heteroatoms, provided that said heteroatoms are not sulfur; b) one of the two substituents Rand Ris hydrogen, while the other may be selected from hydrogen, or a linear or branched alkyl with a number of carbon atoms between 1 and 6, preferably methyl, ethyl, 1-propyl, 2-propyl, n-butyl, sec-butyl, more preferably methyl or ethyl; c) n is the number of units of the calixarene ring and is comprised in the range between 4 and 16, preferably between 5 and 12; said calixarene being characterized in that in at least one of the n units of the calixarene ring, at least one of the substituents R, R, Rand Rcontains at least one acid group of carboxylic type available for the reaction with a metal base, with the proviso that said acid group of carboxylic type is not contained in a unit of the calixarene ring derived from salicylic acid. 

Metal compounds of calixarenes, detergent compositions containing them and use thereof in lubricant compositions

Hydrogenated polymers with a radial structure having a core made up of calixarenes of the general formula (I), to the core of which is linked a number P of hydrogenated linear polymer segments selected from: &#x2014;hydrogenated homopolymers or copolymers of conjugated dienes; or &#x2014;hydrogenated copolymers of said conjugated dienes and monoalkenyl arenes, and &#x2014;mixtures thereof said formula (I) in which: &#x2014;R, R, Rand Rare independently selected from hydrogen; a group containing carbon and hydrogen; a group also containing heteroatoms in addition to carbon and hydrogen; a group also containing silicon in addition to carbon, hydrogen and heteroatoms; &#x2014;one of the two substituents Rand Ris hydrogen, while the other may be hydrogen or alkyl, with a number of carbon atoms between 1 and 6, preferably methyl and ethyl; &#x2014;n is an integer in the range between 4 and 16. 

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San Donato Milanese, Italy

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