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 is preferably in the form of seals for the protection of paper-based information from a fake. Describes fluorescent stamp mastic containing water-soluble fluorescent dye, which emits light in the wavelength range 400 - 700 nm under the influence of radiation in the wavelength range of 200 - 500 nm, binding, low molecular weight alcohols and water, and as a binder it contains a polyethylene glycol with a molecular weight of 200-20000 and additionally organic water-soluble phosphor emitting light in the wavelength range 400 - 700 nm under the influence of radiation in the wavelength range 200 - 400 nm, in the following ratio, wt.%: the specified water-soluble fluorescent dye is 0.1 - 20; specified water-soluble phosphor 0.1 to 20; the specified glycol 0.1 to 10; low molecular weight alcohols 5 - 70 and water - the rest. llulose-paper. 3 C.p. f-crystals.

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 is preferably in the form of seals for the protection of paper-based information from a fake.

To make the stamp mastics specific properties, such as 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 wt is warezserbia composition, in which the intensity of fluorescence dyes increase due to the use of various organic solvents. They form a dye complexes due to forces of van der Waltz or hydrogen bonds, while 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 inventor's certificate 852921, 360213 and 1025528, DE, application 2754786).

Propose a significant increase in the fluorescence intensity 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 transferred 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, prisoners in polimernoyi fluorescent pigments (SU, copyright certificate 216155, DE, application 1282827, Fr, applications 2099823 and 2114612).

The disadvantage of these compositions should recognize the complexity of manufacturing various colorful and marking compositions based fluorescent fluorescent pigments and the need for additional stabilization during storage due to their separation, therefore they are not widely used as a stamp mastics.

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 in the is to develop a formulation of aqueous ink mastic, fluorescence which is visually distinguishable on pulp and paper, with a high intensity of intrinsic fluorescence.

The technical result is obtained as a result of implementation of the invention is to improve the protection of documents and securities made on pulp and paper.

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 400 to 700 nm under the influence of radiation in the wavelength range from 200 to 500 nm, water-soluble organic phosphor emitting light in the wavelength range from 400 to 700 nm under the influence of radiation in the wavelength range from 200 to 400 nm, binding, low molecular weight alcohols and water, and as a binder it contains a polyethylene glycol with a molecular weight of 200-20000, in the following ratio, wt.%:

The specified water-soluble fluorescent dye is 0.1 - 20

The specified water-soluble phosphor - 0,1 - 20

The specified glycol, and 0.1 - 10

Low molecular weight alcohols - 5 - 70

Water - the Rest

Predpochtitelno, as the water-soluble phosphor contains stilbene, coumarin, and pyrazolinone organic phosphors, as well as low molecular weight alcohols is a mixture of diethylene glycol, glycerol and isopropyl alcohol in the following ratio, wt.%:

Diethylene glycol is 0.1 - 39,95

Glycerol, and 0.1 - 39,95

Isopropyl alcohol - Rest

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 of 400 to 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 acceptors of energy use water-soluble xanthene, acridinone and naphthalimide fluorescent water-soluble is pyrazolinone organic phosphors.

For each case is provided with 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 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.

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

Diethylene glycol is 0.1 - 39,95

Glycerol, and 0.1 - 39,95

Isopropyl alcohol - Rest

The rate of drying ink mastic regulate the ratio of the binder, alcohols and water.

Fluorescent ink paste is prepared as follows. In the beginning prepare aqueous solutions of dyes or phosphors. Then the solutions are mixed among themselves and add other components. Obtained by this technology, water stamp mastic is homogeneous.

Example 1. The production of red aqueous ink mastic with bright red fluorescencia C, xanthene fluorescent dyes eosin VA and duazin Acid Pink RL.

Dissolution of balotra C, eosin VA and duazin Acid Pink RL is carried out in water, the solutions are mixed with other components stamp postmark.

The ratio of components in stamp mastic, wt.%:

Eosin VA - 3,0

Duazin Acid Pink RL - 3,0

Belfor C - 10,0

Diethylene glycol - 20,0

Glycerin - 20,0

Isopropyl alcohol - 10,0

The polyethylene glycol - 4000 - 10,0

Water - the Rest

Example 2. The manufacture of Magenta aqueous ink mastic with a bright red fluorescence in the RIP.

For the manufacture of ink mastic use water-soluble stilinovic the phosphor - belfor C, xanthene fluorescent dye - Duazin Acid Pink RL.

Dissolution of balotra C and Duazin Acid Pink RL is carried out in water, the solutions are mixed with other components stamp postmark.

The ratio of components in stamp mastic, wt.%:

Duazin Acid Pink RL - 5,0

Belfor C - 10,0

Diethylene glycol - 20,0

Glycerin - 15,0

Isopropyl alcohol - 10,0

The polyethylene glycol - 4000 - 5,0

Water - the Rest

We offer fluorescent water stamp mastic can be used when applied is rmacie with intense self-fluorescence.

1. Fluorescent stamp mastic containing water-soluble fluorescent dye, which emits light in the wavelength range from 400 to 700 nm under the influence of radiation in the wavelength range from 200 to 500 nm, binding, low molecular weight alcohols and water, wherein the binder contains a polyethylene glycol with a molecular weight of 200-20000, and additionally water-soluble organic phosphor emitting light in the wavelength range from 400 to 700 nm under the influence of radiation in the wavelength range from 200 to 400 nm, in the following ratio, wt.%:

The specified water-soluble fluorescent dye is 0.1-20

The specified water-soluble phosphor 0.1 to 20

The specified glycol is 0.1-10

Low molecular weight alcohols 5-70

Water the Rest

2. Fluorescent stamp mastic under item 1, characterized in that as a fluorescent dye, it contains water-soluble xanthene, acridinone and naphthalimide dyes.

3. Fluorescent stamp mastic under item 1, characterized in that as the water-soluble phosphor contains stilbene, coumarin, and pyrazolinone organizes the molecular alcohols it contains a mixture of diethylene glycol, glycerol and isopropyl alcohol in the following ratio, wt.%:

Diethylene glycol is 0.1-39,95

Glycerin 0.1 to 39,95

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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