Lubricant property determination

Details Lubricant property determination Lubricant property determination

1995-06-06

1998-04-14

Voeltz, Emanuel T.

Boots, shoes, and leggings

364498, 364500, G01N 3108, G06F 1542

Patent

active

057400733

ABSTRACT:
A method of determining or predicting a value P.sub.x of a property of a material X, which is a feed to a process or a property of a product of a process from said material or yield of said process, which method comprises measuring the absorption D.sub.i x of said material at more than one wavelength in the region 600-2600 nm, comparing the said absorptions or a derivative thereof with absorptions D.sub.i m or derivatives thereof at the same wavelength for a number of standards S in a bank for which said property or yield P is known, and choosing from the bank at least one standard S.sub.m with property P.sub.m said standard having the smallest average value of the absolute difference at each wavelength i between the absorption D.sub.i x (or derivative thereof) for the material and the absorption D.sub.i m (or derivative thereof) for the standard S.sub.m to obtain P.sub.x, with averaging of said properties or yields P.sub.m when more than one standard S.sub.m is chosen, and wherein said material X is a composition comprising part of a lubricating oil fraction obtainable from a vacuum distillation of oil.

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