Abstract:
A compound characterized by Formula I: wherein X can be carbon (C), oxygen (O), or sulfur (S); R1 and R2 can each independently be hydrogen, a C1 to C20 alkyl group, or a C6 to C10 aryl group; R3 and R3′ can each independently be hydrogen or a C1 to C4 alkyl group; R4 and R4′ can each independently be hydrogen, a C1 to C4 alkyl group, a C4 to C10 cycloalkyl group, or a C6 to C10 aryl group; R5 and R5′ can each independently be a C4 to C10 alkyl group; R6 and R6′ can each independently be hydrogen or a C1 to C6 alkyl group; and R7 and R7′ can each independently be hydrogen or a C1 to C4 alkyl group; and wherein the compound characterized by Formula I when subjected to gas chromatography-mass spectrometry (GC-MS) using electron ionization produces at least one ion having a mass-to-charge ratio of greater than about 300 at an ionization energy of equal to or greater than about 70 eV.
Abstract:
A composition comprising a fuel and at least one compound characterized by Formula I: wherein X is carbon, oxygen, or sulfur; R1 and R2 each independently are hydrogen, a C1 to C20 alkyl, or a C6 to C10 aryl; R3 and R3′ each independently are hydrogen or a C1 to C4 alkyl; R4 and R4′ each independently are hydrogen, a C1 to C4 alkyl, a C4 to C10 cycloalkyl, or a C6 to C10 aryl; R5 and R5′ each independently are a C4 to C10 alkyl; R6 and R6′ each independently are hydrogen or a C1 to C6 alkyl; and R7 and R7′ each independently are hydrogen or a C1 to C4 alkyl; and wherein the compound of Formula I when subjected to GC-MS using electron ionization at greater than about 70 eV produces at least one ion having a mass-to-charge ratio of from 300 to 600.
Abstract:
A process of powering a compression ignition engine using a main fuel comprising methanol and water, including: fumigating an intake air stream with a fumigant comprising an ignition enhancer; introducing the fumigated intake air into a combustion chamber in the engine and compressing the intake air; introducing the main fuel into the combustion chamber; and igniting the main fuel/air mixture to thereby drive the engine. Also provided a fuel for use in the process, a two-part fuel for use in the process, and associated power generation systems.
Abstract:
The safety and proper performance of jet aircraft engines requires that any contamination of jet fuel, for example by water or by improper contaminants, be filtered (removed) before delivery of the fuel, through hoses, to the fuel tanks of the aircraft. Coalescing devices and filters in the fuel delivery system are used to attain this result. A typical problem is that filter materials chemically react with surfactants, and this causes the filter subsequently to “disarm” or fail to perform its function of removing water, which can lead to delivery of fuel containing excessive water. A solution to this problem is to pre-test the fuel for such surfactants by feeding a small fuel sample that has been mixed with “challenge water” through a smaller ‘representative’ test filter and monitor the performance. Using a fluorescent dye in the “challenge water,” the amount of water that passes the test filter is detected, compared with a baseline data and fuel quality determination is made. From the result of the small-scale test, the fuel condition can be inferred and, based thereon; action can be taken to treat the fuel, prior to further distribution, such that it will not disarm field filter-coalescers in a typical fuel distribution system. The use of a fluorescent dye enhances the ability to make this determination of very small representative fuel filters. The fuel evaluation process is fully automated, thereby avoiding human-factor variables and assuring repeatable results.
Abstract:
A process for detecting oil or lubricant contamination in a manufactured product, the process comprising adding a fluorescent taggant to oils or lubricants contained in processing machinery for said product, conveying said product past an infrared detection apparatus, irradiating said product with infrared radiation from said detection apparatus as it passes the detection apparatus, and detecting infrared radiation emitted from said irradiated product.
Abstract:
A process for detecting oil or lubricant contamination in the production of an article by adding a Stokes-shifting taggant to an oil or lubricant of a machine utilized to produce the article or a component thereof, irradiating the articles produced with a first wavelength of radiation, and monitoring the articles for emission of radiation at a second wavelength. The taggant can be in the form of a composition containing a Stokes-shifting taggant, which absorbs radiation at a first wavelength and emits radiation at a second wavelength, different from said first wavelength, dissolved or dispersed in an oil or lubricant.
Abstract:
A method for detecting mentholated tobacco, comprising irradiating tobacco containing menthol and a fluorescent taggant with radiation and observing the tobacco for fluorescence from the taggant. A system and method for detecting and separating mentholated tobacco from non-mentholated tobacco within a product stream is also provided.
Abstract:
A compound having formula (I) wherein G represents at least one substituent selected from the group consisting of C1-C12 alkyl and C1-C12 alkoxy.
Abstract:
A system for detecting oil contaminated product and foreign matter within a product stream is provided. The system includes a first conveying means for delivering a product stream; a first detection apparatus for detecting oil contaminated product, the first detection apparatus positioned proximate the product stream, the first detection apparatus including a high intensity infrared light source directed at the product stream; and a high speed NIR spectrometer sensor tuned to detect a reflected signal from a taggant disposed in the oil of the oil contaminated product; a second detection apparatus for detecting foreign matter within a product stream, the second detection apparatus positioned proximate the product stream, the second detection apparatus including a light source for illuminating the product stream and a detector for detecting light reflected from the product stream; and a controller for determining whether the product stream contains oil contaminated product or foreign matter.
Abstract:
A compound having formula (I), wherein R represents C1-C18 alkyl, C5-C18 cycloalkyl, C3-C18 alkenyl or C3-C18 alkynyl; provided that, when —OR groups are in 2,2′-positions on benzene rings in formula (I), R is not methyl, ethyl, hexyl, octyl or allyl.