Method of analyzing basestocks for low temperature properties

Details Method of analyzing basestocks for low temperature properties Method of analyzing basestocks for low temperature properties

G - Physics

01

N

G01N 30/46 (2006.01) G01N 11/00 (2006.01) G01N 33/28 (2006.01)

Patent

CA 2585198

The invention relates to a method for analyzing a lubricating oil for low temperature properties. The method utilizes 2-dimensional gas chromatography (2D GC) to determine the amounts of paraffins and iso~paraffins in the oil. In particular, the method analyzes for a particular iso~paraffin fraction which is correlated to low temperature performance. The compositional information thus obtained is correlated with formulated oil Mini Rotary Viscometer (MRV) properties.

L'invention porte sur un procédé d'analyse d'une huile lubrifiante pour des propriétés à température basse. Ce procédé repose sur l'utilisation d'une chromatographie en phase gazeuse bidimensionnelle (2d GC) afin de déterminer des quantités de paraffine et d'isoparaffine dans l'huile. Plus précisément, ce procédé consiste à analyser une fraction d'isoparaffine précise qui est mise en corrélation avec une opération à température basse. Ces informations de composition ainsi obtenues sont mises en corrélation avec des propriétés de mini-viscomètre rotatif d'huile composée.

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