PROCESS FOR DETERMINING THE PHYSIO-CHEMICAL PARAMETERS OF A MIXTURE COMPRISING A SULPHONATE AND AN OIL
Publication Date: 2001-Dec-21
The IP.com Prior Art Database
Process for determining one or more physico-chemical parameters of a mixture comprising at least one sulphonate and an oil. The sulphonate to be analysed being synthetic or natural and soluble in the oil, the process comprising the following steps: a) reference mixtures are selected, each comprising at least one reference sulphonate and at least one oil, the reference sulphonate being synthetic or natural and soluble in the oil and the number of reference mixtures being greater than or equal to 2.Y, where Y represents the number of physico-chemical parameters to be determined; b) for each of the reference mixtures, at least one physico-chemical parameter is measured by a conventional analysis method; c) an IR spectrum is produced for each of the reference mixtures; d) a physical variable is selected from each IR spectrum produced in step c) and it is determined; e) a mathematical reference model is produced by correlation between, on the one hand, each parameter measured in step b) for each of the reference mixtures and, on the other hand, the physical variable selected and determined in step d) for each of the corresponding reference mixtures; f) the IR spectrum of the mixture to be analysed is produced; g) the physical variable selected in step d) is determined from the IR spectrum produced in step f); h) the physico-chemical parameter of the mixture to be analysed is determined from the physical variable of the IR spectrum determined in step g) and the mathematical model produced in step e).