Printing ink

 

(57) Abstract:

The invention relates to the printing industry, namely, printing ink for screen printing, used for preparation of luminous scales, indicators, signs, used in low light conditions, for example, during the evacuation of people from the building during a fire or any other emergency in the dark. Describes a printing ink containing a luminescent material and a polymeric binder. The phosphor used aluminosilicate strontium-calcium formula SrCa2[2(Al2O3SiO4)] , and as the polymeric binder is a mixture of plasticized polyester resin or phenol-formaldehyde resin with ethyl cellosolve, cyclohexanone and heavy high-boiling petroleum fractions at a ratio of wt. %: polyester resin plasticized or phenol-25-55, ethyl cellosolve 2-7, cyclohexanone 2-9, heavy high-boiling petroleum fractions 30-70, strontium silicate-calcium 30-70, europium from 0.3 to 3.7, neodymium of 0.1-0.9, polymer binder 25-70. The technical result is an increase in the intensity of luminescence under UV and visible radiation (0.3 to 0,76 µm). table 2.


Pigment - 100 - 125

The phosphor - 380 - 400

A mixture of polycondensates rosin with maleic anhydride and phthalic anhydride with pentaerythritol with polymerized linseed oil - 360 - 390

The oil phase with TKip= 350-380o- 25 - 45

The solution pentaerythritol ether malaysiaand rosin in a mixture of linseed and transformer oils - 15 - 25

A solution of phenol-formaldehyde resin in linseed oil - 10 - 20

Polyethylene - 20 - 30

Naphthenate-cobalt drier - 10 - 20

(SU 852921).

The disadvantages of this paint are low intensity and short time of luminescence under the influence of electromagnetic radiation (EMR) in the wavelength range of 0.3-0,76 ám.

The purpose of the invention is the increase in luminescence under UV and visible radiation (0.3 to 0,76 µm).

This goal is achieved by printing ink containing phosphor R>
SrCa2[2(Al2ABOUT3SIO, SIS4)] ,

activated by europium and neodymium, in the following ratio, wt. %:

The aluminosilicate strontium-calcium - 30 - 70

Europium - 0,3 - 3,7

Neodymium - 25 - 70

Polymer binder - 25 - 70

As the polymeric binder, the dye comprises a mixture of plasticized polyester or phenol-formaldehyde resin and organic solvents ethylcellosolve, cyclohexanone and heavy high-boiling petroleum fractions (FBL) in the following ratio, wt. %:

Resin plasticized polyester or phenol - 25 - 55

The ethyl cellosolve - 2 - 7

Cyclohexanone - 2 - 9

Heavy oil wysokiej fraction - 30 - 70

As plasticized polyester resin can be used any polyester resin, for example, TEP-U-80. As the phenol-formaldehyde resin can be used any brand of resin, for example, resin SF-280.

Example of getting ink.

The polymer binder are mixed with a powder of strontium silicate-calcium activated with europium and neodymium. The resulting mixture was passed through rolls kratkotrajno machine and received mA the products.

Table 1 shows the recipes of the investigated formulations of ink.

For testing paint was prepared in a paddle mixer, after which the resulting mixture was passed through rolls kratkotrajno machine.

The intensity of the luminescence under UV and visible radiation (0.3 to 0,76 µm) was determined by the intensity of the exposure (density of blackening) film type CFT-12 a sensitivity of 90% of the state under standard conditions of manifestation at the maximum of spectral radiation curve of paint, when the display image of the investigated sample with a film thickness of 2 μm.

The results are given in table 2.

As can be seen from the table 2 results of tests offered printing ink differs from the prototype in luminescence intensity at 1.34 times and on-time glow.

Printing ink for screen printing, containing a luminescent material and a polymeric binder, characterized in that the phosphor contains a strontium silicate-calcium formula SrCa2[2(Al2O3SiO4)] , activated by europium and neodymium, and as the polymeric binder is a mixture layer of the diversified high-boiling petroleum fractions with a ratio wt. %:

Resin plasticized polyester or phenol - 25-55

The ethyl cellosolve - 2-7

Cyclohexanone - 2-9

Heavy high-boiling petroleum fractions - 30-70

when the ratio of the components of paint, wt. %:

The aluminosilicate strontium-calcium - 30-70

Europium - 0,3-3,7

Neodymium - 0,1-0,9

Polymer binder - 25-70

 

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1 tbl, 2 ex

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16 cl, 2 dwg, 2 tbl, 2 ex

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16 cl, 1 dwg, 4 tbl

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,

where values of radicals are given in the claim. The invention also relates to a polymerisable composition and a method for polymerisation in the presence of said catalytic compounds. The invention enables to initiate the reaction only if desired by external activation, such as heating or light.

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12 cl, 14 tbl, 67 ex

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EFFECT: the invention ensures, that offered photoluminescent material for the traffic lanes marking is wear-resistant, resistant to the atmospheric effects, has the effective photoluminescence, may be used for making the white lines and the various colors lines and such lines are not slidable.

16 cl, 9 tbl, 13 ex

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