Fluorescent stamp mastic

 

(57) Abstract:

The invention relates to the field of compositions for coating, namely fluorescent stamp mastics for the application of texts or images on solid media, preferably pulp and paper, and can be used when drawing text and/or images special stamp mastic, preferably in the form of seals, for the protection of paper-based information from a fake. Describes fluorescent water stamp mastic containing water-soluble fluorescent dye, which emits light in the wavelength range 200 - 700 nm under the influence of radiation in the wavelength range 200 - 700 nm, water-soluble afluorescent dye, a binder, a low molecular weight alcohols and water, and as a binder it contains a polyethylene glycol with a molecular weight of 200 to 60,000 and optional water-soluble organic phosphor with a range of radiation 450-500 nm and with a bandwidth of excitation of 200-400 nm and diketonate europium. The proposed mastic promotes effective level of protection of documents and securities made on pulp and paper, from a fake. 5 C.p. f-crystals.

The invention relative to the posts or images on solid media, preferably the pulp and paper, and can be used when drawing text and/or images special stamp mastic, preferably in the form of seals, for the protection of paper-based information from a fake.

To make the stamp mastics specific properties, for example, fluorescence, recently used a variety of dyes capable of fluorescence when illuminated, the optical radiation in the ultraviolet (UV) wavelength range.

The disadvantage of these stamp mastics should recognize the absence of the emergence of visually distinguishable fluorescent effect when applying the stamp mastics on paper with a high intensity of the intrinsic fluorescence, which reduces the protective effect of the stamp mastics. This is due to the masking fluorescence dyes bright illumination optical bleaches paper materials when exposed to UV radiation.

To increase the fluorescence intensity of stamp mastics based on fluorescent dyes used different methods.

Known fluorescent marking composition, in which the intensity of fluorescence dyes Uwe is and the expense of forces, van-der-Waltz or hydrogen bonds, however, the intensity of fluorescence increases.

Usually to increase the fluorescence intensity of use benzyl alcohol, butyl acetate, cyclohexanone, dimethylformamide, diethylene glycol, triethylene glycol, various hydrocarbons and oils (SU, inventors ' certificates 852921, 360213 and 1025528, DE, application 2754786).

Also proposed to significantly increase the intensity of the fluorescence stamp mastics through the use of cascading songs - sensitized fluorescence of the dyes by inductive resonance and exchange resonance mechanism. The most effective in this case is the exchange-resonant mechanism, according to which the energy of the fluorescence of one component (donor) is used for fluorescence excitation of another component (acceptor).

This mechanism is used to obtain fluorescent fluorescent pigments on the basis of water-insoluble fluorescent dyes and organic phosphors, introduced in the polymer matrix.

Known compounds nonaqueous colorful and marking compositions, including fluorescent fluorescent pigments (SU authorship 216155, DE, application 1282827, Fr, applications 2099823 and 2114612).

The closest analogue of the proposed technical solution can be recognized fluorescent composition described in the application Japan 57-2977. Known fluorescent composition contains a water-soluble fluorescent dye, an excipient, a binder, water and polyhydric alcohols. Fluorescent effect of this known composition due to the presence of only fluorescent in the UV range of the dye. The intensity of its fluorescence is enhanced by the use of polyhydric alcohols can form hydrogen bonds with the dye. However, the fluorescence intensities of known fluorescent composition for intensely fluorescent paper is insufficient for obtaining visually distinct protective effect.

The technical problem to be solved proposed by the invention, consists in developing the recipe stamp mastic, the fluorescence of which is visually distinguishable on pulp and paper, with a high intensity of intrinsic fluorescence.

The technical result is obtained when implementing pre the importance of paper, from a fake due to the significant fluorescence seal mastic even against their own fluorescence of the paper on which the print is applied.

To achieve the technical result of the proposed use of water-soluble fluorescent stamp mastic containing water-soluble fluorescent dye, which emits light in the wavelength range from 200 to 700 nm under the influence of radiation in the wavelength range from 200 to 700 nm, water-soluble afluorescent dye, a binder, a low molecular weight alcohols and water, characterized in that it further comprises a water-soluble organic phosphor telenovela number of emitting light in the wavelength range from 400 to 700 nm under the influence of radiation in the wavelength range from 200 to 700 nm, and diketonate europium, used water-soluble dye kilmacanoge range, water-soluble effluorescence acid dye and the binder is a polyethylene glycol with a molecular weight 200-60000 in the following ratio, wt.%:

Water-soluble fluorescent dye is 0.1 - 30

Water-soluble afluorescent dye is 0.1 - 10

Water-soluble phosphor, in addition to the dye, and 0.1 - 10

-Dickey

Preferably as low molecular weight alcohols, a mixture of diethylene glycol, glycerol and isopropyl alcohol in the following ratio, wt.%:

Diethylene glycol is 0.1 - 49,95

Glycerol, and 0.1 - 49,95

Isopropyl alcohol - Rest

however, there may be used pure diethylene glycol or glycerin.

Mostly as-diketonate europium use of Tris-thenoyltrifluoroacetone europium or any other surround radical.

When composing the proposed stamp mastic can be used with any fluorescent dyes, broad-band excitation (200-500 nm) with a maximum in the range of 450-500 nm.

To increase the intensity of the fluorescence of these dyes when excited in the ultraviolet range in composition stamp mastic introduced a water-soluble organic phosphors with a range of radiation 450-500 nm and a broad band excitation (200-400 nm), which transmit radiation energy specified fluorescent dyes.

In this case, the fluorescent dyes act as energy acceptors and organic phosphors as donors of energy.

As a donor energy is preferably, but not necessarily, use water-soluble stilbene phosphors.

For each case choose a certain pair of donor - acceptor, in which the maximum of the emission band of the phosphor coincides with the range of the maximum bandwidth of the excitation of the dye.

To enhance the effect of donor-acceptor interaction in the system of the fluorescent dye is an organic phosphor stamp mastic used compound with europium-diketone.

In addition, the presence of the complexed with europium-diketone allows you to get in the fluorescence spectrum stamp mastic typical narrow band fluorescence of europium in the field 611-515 nm.

To increase the fluorescence intensity of stamp mastic due to forces of van der Waltz or hydrogen bonds, a mixture of low molecular weight alcohols and glycerin, diethylene glycol, isopropyl alcohol. However, there may be used pure solvent is glycerol or diethylene glycol.

To make different colors stamp mastic can be used additives forstoring effluorescence azo - yilanlikale (molecular weight 200-60000).

The rate of drying ink mastic regulate the ratio of binding, low molecular weight alcohols and water.

Fluorescent ink paste is prepared as follows. In the beginning prepare aqueous solutions of dyes or phosphors. The dissolution of the compounds of europium is carried out in isopropyl alcohol. Then the solutions are mixed among themselves and add other components. Obtained by this technology, water stamp mastic is a homogeneous liquid medium.

Example 1. The manufacture of red-violet water stamp mastic with a bright red fluorescence.

For the manufacture of ink mastic used xanthene fluorescent dyes Eosin VA and Duazin Acid Pink RL, effluorescence the azo dye Acid blue, water-soluble stilinovic the phosphor - Belfor C, soluble phosphor-based compound with europium-diketone - Tris-thenoyltrifluoroacetone europium.

Dissolving Tris-thenoyltrifluoroacetone europium carried out in isopropyl alcohol, and other substances in water, the solutions are mixed with other components stamp mastic. The ratio of components is C - 10,0

Tris-thenoyltrifluoroacetone europium - 1,0

Diethylene glycol - 20,0

Glycerin - 20,0

Isopropyl alcohol - 10,0

The polyethylene glycol - 4000 - 10,0

Water - the Rest

Example 2. The production of purple water stamp mastic with a bright red fluorescence in the RIP.

For the manufacture of ink mastic used xanthene fluorescent dyes Eosin VA and Duazin Acid Pink RL, effluorescence the azo dye Acid blue, water-soluble stilinovic the phosphor - Belfor C, soluble phosphor-based compound with europium-diketone - Tris-thenoyltrifluoroacetone europium.

Dissolving Tris-thenoyltrifluoroacetone europium carried out in isopropyl alcohol, and other substances in water, the solutions are mixed with other components stamp mastic. The ratio of components in stamp mastic, wt.%:

Eosin VA - 5,0

Duazin Acid Pink RL - 5,0

Acid blue K - 1,0

Belfor C - 10,0

Tris-thenoyltrifluoroacetone europium - 5,0

Diethylene glycol - 20,0

Glycerin - 15,0

Isopropyl alcohol - 10,0

The polyethylene glycol - 4000 - 5,0

Water - the Rest

We offer fluorescent water stampes protect against forgery of paper-based information with intensive self-fluorescence.

1. Fluorescent water stamp mastic containing water-soluble fluorescent dye, which emits light in the wavelength range from 200 to 700 nm under the influence of radiation in the wavelength range from 200 to 700 nm, water-soluble afluorescent dye, a binder, a low molecular weight alcohols and water, wherein the binder contains a polyethylene glycol with a molecular weight 200-60000 and optional water-soluble organic phosphor with a range of radiation 450-500 nm and a broad band excitation of 200-400 nm, and diketonate europium in the following ratio, wt.%:

Water-soluble fluorescent dye is 0.1-30

Water-soluble afluorescent dye is 0.1-10

The specified water-soluble phosphor of 0.1-10

-diketonate europium 0,1-10

The specified glycol is 0.1-10

Low molecular weight alcohols 5-50

Water the Rest

2. Fluorescent water stamp mastic under item 1, characterized in that as a fluorescent dye, it contains water-soluble xanthene dye Eosin VA and Duazin Acid Pink RL.

3. Fluorescent water stamp mastic under item 1, different is Belfor z

4. Fluorescent water stamp mastic under item 1, characterized in that as the water-soluble afluorescent dye it contains the azo dye Acid blue K.

5. Fluorescent water stamp mastic under item 1, characterized in that the as-diketonate europium it contains Tris-thenoyltrifluoroacetone europium.

6. Fluorescent water stamp mastic under item 1, characterized in that as low molecular weight alcohols it contains a mixture of diethylene glycol, glycerol and isopropyl alcohol in the following ratio, wt.%:

Diethylene glycol is 0.1-49,95

Glycerin is 0.1-49,95

Isopropyl alcohol Else

 

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FIELD: polymer materials.

SUBSTANCE: polyurethane resin is a product of reaction of at least one diisocyanate component and isocyanate-reactive components having first group of at least one polyol, second group of at least one polyol, and third group of at least one polyol, at least one amine, and, additionally, reaction-stopping agent, all polyols of the first group having average molecular mass between 1000 and 10000 g/mole, those of second group having average molecular mass between above 10000 and 20000 g/mole, and those of third group having average molecular mass equal to or higher than 800 g/mole. Ratio of diisocyanate component to isocyanate-reactive components is selected such that all isocyanate groups are present as products of reaction with isocyanate-reactive functional groups. Resin is used as film-forming binder in coating compositions, in particular in printing inks for printing on polyolefin substrates. Printing ink is preferably used for manufacturing printed layered articles.

EFFECT: increased gluing ability and heat resistance of ink laid on plastic substrate.

41 cl, 2 tbl, 12 ex

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