CRACK REAGENT
    3.
    发明专利

    公开(公告)号:JPH07243991A

    公开(公告)日:1995-09-19

    申请号:JP1734495

    申请日:1995-02-03

    Applicant: BASF AG

    Abstract: PURPOSE: To detect cracks in a metal with excellent sensitivity by using a compound to be selected from among a group of phthalocyanine or the like containing metals or containing no metals having the wavelength of maximum absorption and maximum fluorescence in the specific range as a crack reagent. CONSTITUTION: A compound to be selected among the group of phthalocyanine, naphthalocyanine, aluminum compound of aromatic amine, methine dye, or azulene-squaric acid dye containing metals or containing no metals having the maximum absorption and the maximum fluorescence in the wavelength range of 620-1200nm is used as a crack reagent. The reagent solution is applied to a test specimen such as an aluminum block which is degreased and polished, the block is irradiated with semiconductor laser beams having maximum emission wavelength in the spectrum range λmax -100 to λmax +20nm of the maximum absorption wavelength of the marker substance, and the excited fluorescence is detected by a semiconductor detector, Because the fluorescence can easily be detected even in the sunshine, no expensive lamp is necessary, and a darkened visual test box can be dispensed with.

    METHOD FOR TRANSFERRING IR DYE FROM SUBSTRATE TO PLASTIC-COATED PAPER

    公开(公告)号:JPH07149060A

    公开(公告)日:1995-06-13

    申请号:JP22535094

    申请日:1994-09-20

    Applicant: BASF AG

    Abstract: PURPOSE: To obtain a method for transferring an IR dye from a transfer plate to a plastic-coated paper in which good light fastness is attained by presenting one kind or more of IR dye selected from a group of specified naphthalocyanine and nickel-dithiolane complex. CONSTITUTION: When an invisible IR dye for printing a bar code, or the like, readable through a suitable detector is transferred from a transfer plate to a plastic coated paper through diffusion or sublimation employing an energy source, a transfer plate where one kind or more of IR dye selected from a group of naphthalocyanine shown by formula I and a specified nickel-dithiolane complex is present is employed. In the formula, Y -Y represent hydrogen, a hydrogen group, C1 -C20 -alkyl or C1 -C20 -alkoxy, Y -Y represent hydrogen, C1 -C20 -alkyl or C1 -C20 -alkoxy, Me represents two hydrogen atoms, two lithium atoms, magnesium, zinc, copper, nickel, VO, TiO or AlCl.

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