Abstract: The disclosure provides dyes for marking hydrocarbon compositions. More particularly, the disclosure relates to non-mutagenic dyes for marking hydrocarbon compositions.

Abstract: The present disclosure provides compositions, methods, and systems for identifying marked hydrocarbon fluids. These compositions, methods, and systems utilize a gas chromatography marker including a non-pyrrolidinone nitrogen-containing compound. The methods and systems can identify the presence or absence of the gas chromatography marker and/or the non-pyrrolidinone nitrogen-containing compound. The compositions, methods, and systems can optionally utilize a spectroscopic marker.

Abstract: The present disclosure provides compositions, methods, and systems for identifying marked hydrocarbon fluids. These compositions, methods, and systems utilize a gas chromatography marker including a pyrrolidinone. The methods and systems can identify the presence or absence of the gas chromatography marker and/or the pyrrolidinone. The compositions, methods, and systems can optionally utilize a spectroscopic marker.

Abstract: The disclosure provides dyes for marking hydrocarbon compositions. More particularly, the disclosure relates to non-mutagenic dyes for marking hydrocarbon compositions.

Abstract: The present disclosure provides compositions, methods, and systems for identifying marked hydrocarbon fluids. These compositions, methods, and systems utilize a gas chromatography marker including a pyrrolidinone. The methods and systems can identify the presence or absence of the gas chromatography marker and/or the pyrrolidinone. The compositions, methods, and systems can optionally utilize a spectroscopic marker.

Abstract: The present disclosure provides compositions, methods, and systems for identifying marked hydrocarbon fluids. These compositions, methods, and systems utilize a gas chromatography marker including a non-pyrrolidinone nitrogen-containing compound. The methods and systems can identify the presence or absence of the gas chromatography marker and/or the non-pyrrolidinone nitrogen-containing compound. The compositions, methods, and systems can optionally utilize a spectroscopic marker.

Abstract: The present disclosure provides compositions, methods, and systems for identifying marked hydrocarbon fluids. These compositions, methods, and systems utilize a gas chromatography marker including a pyrrolidinone. The methods and systems can identify the presence or absence of the gas chromatography marker and/or the pyrrolidinone. The compositions, methods, and systems can optionally utilize a spectroscopic marker.

Abstract: The disclosure provides dyes for marking hydrocarbon compositions. More particularly, the disclosure relates to non-mutagenic dyes for marking hydrocarbon compositions.

Abstract: The present invention is directed to a mixture of at least two different alkylated phenolphthalein ester compounds. Specifically, the present invention is directed to a mixture of at least two different compounds of formula I: wherein R1 represents a straight chain alkyl group having 1 to 11 carbon atoms; R2 represents a hydrogen atom or a group of the formula C(O)R4 where R4 is a hydrogen atom or a straight chain alkyl group having 1 to 11 carbon atoms; X2-X5 independently represent hydrogen; X6-X13 is same or different, and represents hydrogen or a straight or branched chain alkyl group having 1 to 12 carbon atoms. It further relates to a marker composition containing said mixtures dissolved in a solvent.

Abstract: A stable liquid concentrate comprising a dye component which contains a substantial amount of a dye of the formula: wherein the dye component is dissolved in either an aliphatic hydrocarbon or an alicyclic hydrocarbon.

Abstract: A compound represented by formula I is used as a marker for organic products. wherein Ar1 and Ar2 each independently represent a substituted or unsubstituted phenylene group or a substituted or unsubstituted naphthylene group; R1 represents a straight or branched chain alkyl group having 1 to 22 carbon atoms; R2 represents a hydrogen atom or a group of the formula C(O)R4 where R4 is a hydrogen atom or a straight or branched chain alkyl group having 1 to 22 carbon atoms; and R3 represents a hydrogen atom, a straight or branched chain alkyl group having 1 to 12 carbon atoms, a straight or branched chain alkoxy group having 1 to 12 carbon atoms, a hydroxyl group, or a substituted or unsubstituted phenyl group or a substituted or unsubstituted naphthyl group; and Z represents a hydrogen atom or a group of atoms that combine with Ar2 or R3 to form a lactone ring.

Abstract: The present invention relates to organic solvent soluble dyes. In particular, the invention relates to an organic solvent soluble metal complex azo dyes containing chelated metal atoms.

Abstract: Colorless markers for petroleum products and methods and composition for detecting them.

Abstract: A compound represented by formula I is used as a marker for organic products, wherein Ar1 and Ar2 each independently represent a substituted or unsubstituted phenylene group or a substituted or unsubstituted naphthylene group; R1 represents a straight or branched chain alkyl group having 1 to 22 carbon atoms; R2 represents a hydrogen atom or a group of the formula C(O)R4 where R4 is a hydrogen atom or a straight or branched chain alkyl group having 1 to 22 carbon atoms; and R3 represents a hydrogen atom, a straight or branched chain alkyl group having 1 to 12 carbon atoms, a straight or branched chain alkoxy group having 1 to 12 carbon atoms, a hydroxyl group, or a substituted or unsubstituted phenyl group or a substituted or unsubstituted naphthyl group; and Z represents a hydrogen atom or a group of atoms that combine with Ar2 or R3 to form a lactone ring.

Abstract: Petroleum products are marked with a marker such as thymolphthalein or cresolphthalein. When the marked petroleum products are contacted with a developing reagent, a color develops.

Abstract: Automatic transmission fluid containing a red dye stable even in long-lived transmission fluids.

Abstract: 1,8-Naphthalimide derivatives of Formula (I) are useful as fluorescent dyes: ##STR1## wherein R.sup.1 and R.sup.2 are each independently selected from the group consisting of branched alkyl groups containing 7-8 carbon atoms and alkyloxyalkyl groups containing 4 to 24 carbon atoms.

Abstract: Colorless markers for petroleum products and methods of detecting them.

Abstract: Automatic transmission fluid containing a red dye stable even in long-lived transmission fluids.

Abstract: Markers for petroleum products which can be detected upon addition of a developing reagent which provokes the marker to fluorescence.