US 12,282,011 B2
Method for the assessment of the dispersing capacity of new or used lubricating compositions and of additives for lubricating compositions
Marcello Notari, San Donato Milanese (IT); Riccardo Rausa, San Donato Milanese (IT); Giulio Assanelli, San Donato Milanese (IT); Giovanni Ferraro, Florence (IT); Emiliano Fratini, Sesto Fiorentino (IT); and Piero Baglioni, Fiesole (IT)
Assigned to ENI S.P.A., Rome (IT)
Appl. No. 17/917,758
Filed by ENI S.P.A., Rome (IT)
PCT Filed Apr. 7, 2021, PCT No. PCT/IB2021/052891
§ 371(c)(1), (2) Date Oct. 7, 2022,
PCT Pub. No. WO2021/205360, PCT Pub. Date Oct. 14, 2021.
Claims priority of application No. 102020000007351 (IT), filed on Apr. 7, 2020.
Prior Publication US 2023/0168237 A1, Jun. 1, 2023
Int. Cl. G01N 33/28 (2006.01); G01N 15/0205 (2024.01)
CPC G01N 33/2888 (2013.01) [G01N 15/0205 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for the assessment of the dispersing capacity of new or used lubricating compositions and/or of additives for lubricating compositions, the method comprising the steps of:
providing a homogeneous dispersion of at least one carbonaceous particulate in a composition to be tested, the homogeneous dispersion consisting of a lubricating composition or a fraction or component thereof;
acquiring at least one micrographic image of a sample of the homogeneous dispersion, deposited on an observation support; and
calculating a lacunarity of the acquired image as a parameter representative of a degree of dispersion of the carbonaceous particulate in the composition.