Fluorescent dyes
    1.
    发明授权
    Fluorescent dyes 失效
    荧光染料

    公开(公告)号:US06084132A

    公开(公告)日:2000-07-04

    申请号:US454115

    申请日:1999-12-03

    Inventor: Peter J. Heffron

    CPC classification number: C09B3/54 C09B3/44 C09B3/64

    Abstract: Fluorescent dyes which fluoresce in a variety of colors are produced from substituted and un-substituted 6-ring and 8-ring aromatic diketones by reductive alkylation with alkyl halides in the presence of zinc.

    Abstract translation: 以各种颜色发荧光的荧光染料由在锌存在下通过用烷基卤还原烷基化由取代和未取代的6-环和8-环芳族二酮产生。

    Fluorescent dyes
    2.
    发明授权
    Fluorescent dyes 失效
    荧光染料

    公开(公告)号:US06215008B1

    公开(公告)日:2001-04-10

    申请号:US09454194

    申请日:1999-12-03

    Inventor: Peter J. Heffron

    CPC classification number: C07C211/57 C07C2603/54 C09B3/30

    Abstract: Fluorescent dyes which fluoresce a variety of colors are prepared from substituted isoviolanthrone and substituted isoviolanthrone by reductive alkylation with alkyl halides in the presence of zinc.

    Abstract translation: 通过在锌存在下用烷基卤还原烷基化,由取代的异戊醇醛和取代的异戊醇醛来制备发荧光的各种颜色的荧光染料。

    Tagging and identifying organic liquids including fuels
    3.
    发明授权
    Tagging and identifying organic liquids including fuels 失效
    标记和识别有机液体,包括燃料

    公开(公告)号:US5905043A

    公开(公告)日:1999-05-18

    申请号:US82242

    申请日:1998-05-20

    Inventor: Peter J. Heffron

    CPC classification number: C10L1/003 C10L1/226 C10L1/231 Y10T436/13

    Abstract: A water-immiscible organic fluid is tagged and identified by tagging the organic fluid with between about 0.25 and about 100 ppm of a marker compound having the formula: ##STR1## where the OH groups are either ortho or para to the diazo moieties, and the Xs are the same or different and are selected from C.sub.1 -C.sub.12 -alkyl, Cl, Br, F, NH.sub.2, CN, NO.sub.2, NH(C.sub.1-3 -alkyl) and N(C.sub.1-3 -alkyl).sub.2, and the fluid is identified by extracting the tagged fluid with an alkaline aqueous extractant having a pH above about 12 and containing, based on 100 parts by weight of said extractant, between about 10 and about 60 parts by weight of an organic cosolvent having the formula:R.sup.1 --O--R.sup.2 --NH.sub.2 (II)where R.sup.1 is C.sub.1 -C.sub.3 -alkyl, and R.sup.2 is C.sub.2 -C.sub.6 -alkylene.

    Abstract translation: 通过用约0.25至约100ppm的具有下式的标记化合物标记有机流体来标记和识别与水不混溶的有机流体:其中OH基团为重氮部分的邻位或对位,Xs为 选自C 1 -C 12烷基,Cl,Br,F,NH 2,CN,NO 2,NH(C 1-3 - 烷基)和N(C 1-3 - 烷基)2,并且流体由 用pH高于约12的碱性含水萃取剂萃取标记的流体,并以100重量份的所述萃取剂为基础,含有约10至约60重量份的具有下式的有机共溶剂:R1-O-R2 -NH2(II)其中R1是C1-C3-烷基,R2是C2-C6-亚烷基。

    Method of tagging and subsequently indentifying refrigerant lubricants
    4.
    发明授权
    Method of tagging and subsequently indentifying refrigerant lubricants 失效
    标记和随后识别制冷剂润滑剂的方法

    公开(公告)号:US5560855A

    公开(公告)日:1996-10-01

    申请号:US496942

    申请日:1995-06-30

    CPC classification number: C10M171/007 Y10S252/964

    Abstract: A polyol ester or poly-alkylene glycol lubricant is tagged by adding to the lubricant a chemical marker which is stable over the temperature cycling range of a refrigerant.In testing for the presence of the marker, a sample of a lubricant is obtained, and the sample is diluted in a sufficient volume of an organic solvent such that subsequent admixture with an aqueous solution will not result in emulsification. The diluted sample is extracted with an aqueous solution appropriate for the marker. Simultaneous with or subsequent to extraction, a chromophoric reaction of the marker is induced, whereby a readily identifiable color is observable.

    Abstract translation: 通过向润滑剂中加入在制冷剂的温度循环范围内稳定的化学标记物来标记多元醇酯或聚亚烷基二醇润滑剂。 在测试标记的存在时,获得润滑剂样品,并将样品在足够体积的有机溶剂中稀释,使得随后与水溶液的混合不会导致乳化。 稀释的样品用适合标记的水溶液萃取。 与提取同时或之后,引发标记的发色反应,从而可以观察到容易识别的颜色。

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