Chemistry: analytical and immunological testing – Lubricant – grease – mineral oil – hydrocarbon oil product – or... – Acidity – basicity or neutralization number
Patent
1993-09-23
1995-05-30
Housel, James C.
Chemistry: analytical and immunological testing
Lubricant, grease, mineral oil, hydrocarbon oil product, or...
Acidity, basicity or neutralization number
73 6148, 25033911, 2503418, 436 60, 436129, 436171, G01N 3303, G01N 3326
Patent
active
054200415
ABSTRACT:
A method of determining acid value with high accuracy, using an infrared spectrometer is provided, in which the absorbance is determined attributable to carboxylic group based on an infrared absorption spectrum at wave numbers around 3300 cm.sup.-1.
REFERENCES:
patent: 5049742 (1991-09-01), Hosonuma et al.
Handbook of Spectroscopy, vol. II, J. W. Robinson, Editor, CRC Press, Boca Raton Fla. (1974) p. 69.
Seifert et al. "Interfacially Active Acids in a California Crude Oil", Anal. Chem, vol. 41 No. 4 (1969) pp. 554-562.
Patent Abstracts of Japan vol. 15 No. 92 "Auto-Esterification Process" 02-306936 (1991).
Patent Abstracts of Japan vol. 5 No. 96 "Method for Detecting Reaction Progress by Using Infrared Ray Spectroscope" 56-39446 (1981).
Fujita Keiji
Matsushita Kazuhiko
Tsukamoto Akihiro
Yokota Hiroshi
Housel James C.
Kurashiki Boseki Kabushiki Kaisha
Ludlow Jan M.
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