Composition for covert recording of information and the way covert recording information
(57) Abstract:Use: chemical-photographic industry. The inventive composition for covert recording information, comprising a solution containing, wt.%: the phosphor of 0.1 - 5; binder 1 - 5; organic solvent - rest, and a solution B containing, in wt.%: the phosphor other than the phosphor of the solution, 0.1 to 5; binder 1 - 5; organic solvent - else, if the value of the solutions a and B in the composition is equal to(1:10) - (10:1). The way covert recording information is applied to the substrate solution And, keeping to the evaporation of the solvent, the formation of film, processing its solution, drying and UV illumination-light. 2 S. p. f-crystals, 2 tab. The invention relates to methods of covert recording information, in particular to methods of covert recording information compounds, including substances y when irradiated with ultraviolet (UV) light.Known composition for recording hidden information, including the solution of polycyclic aromatic hydrocarbons in polyolefins, such as polyethylene (USSR Author's certificate N 476592, CL G 11 B 7/26, published. 1975). Using this composition, recording and erasing it by heating the film Khujand is the playing technique is photosensitive fluorescent material, in which the photosensitive composition for hidden recording information includes the phosphor-4-azidoaniline, polymer binder, for example, polystyrene and organic solvent is toluene. (AU USSR N 1197562, CL G 03 C 1/72, published. 1991). This composition is applied to a polymer or glass substrate is dried at room temperature, exhibiting a light mercury lamps DRSH-1000 in the range of 250-360 nm through the negative. Read the information in the coverage of the same lamp in the range of 360-410 nm. Get glowing blue positive image. The disadvantage of the proposed invention is the composition for covert recording information including the phosphor, polymer binder and an organic solvent, optionally phosphor having the property of tusitala luminescence. The use of same for the purpose of the hidden marks only the phosphor makes way narrowly limited, registered only the fact of a luminescence label, does not take into account the color (different phosphors are illuminated differently from blue to dark brown), there is no possibility of their combination. All this leads to low efficiency of the given prototype.The aim of the invention is the extension of functionality due to the fact that the substrate, that is the background, deposited on the surface. The background to apply the label is made with a solution containing a phosphor having a luminescence spectrum, which is different from the spectrum of luminescence of the phosphor substrate region of the spectrum. In the place of overlay layers containing two phosphor, one of which also has the property of tusitala luminescence occurs luminescence quenching of the underlying layer, and information clearly stands out brightly luminescense surface.In the above example, two well-known phosphor are used, it would seem, by its purpose, however, the fact that one of the phosphors is both tusitala, leads to the emergence of a new quality: the potential application of a contrasting image on the colored background without color mixing, because the color of the background goes out.Thus, this objective is achieved in that the composition for covert recording information, comprising a solution containing a phosphor, a binder and an organic solvent, includes the above solution (solution A) in the following ratio, wt. The phosphor of 0.1-5 Binder 1-5
Organic dissolve ritel Rest and further, in the following ratio, wt. The phosphor of 0.1-5 Binder 1-5
Organic dissolve retell the Rest in the following ratio of solutions a and B in the composition is equal to(1:10)-(10:1).The way information is recorded by applying to the substrate a solution comprising a phosphor, a binder and an organic solvent, keeping to the evaporation of the solvent, skinning, lighting, UV light, characterized in that use this solution (solution A) in the following ratio, wt. The phosphor of 0.1-5 Binder 1-5
Organic dissolve retell the Rest of the obtained film is treated with solution B comprising a phosphor other than the phosphor And binder and an organic solvent in the following ratio, wt. The phosphor of 0.1-5 Binder 1-5
Organic dissolve ritel Else if the value of the solutions a and B in the composition is equal to(1: 10)-(10: 1), and dried. The surface on which put the hidden information can serve as metal, rubber, glass, enamel, plastic, paper, leather, wood, ceramics.The selected concentration of the phosphors from 0.1 to 5% due to practical considerations. 0.1% phosphor sufficient to UV lighting-the sense because the brightness is not increased and only leads to a waste of himreaktiv. The binder concentration 1-5% sufficient to ensure adhesion of the phosphor to the product. The selected value of the solutions a and B in the composition is equal to(1:10)-(10:1), due to the material, which cause hidden information. So, when marking rubber wheels require a tenfold increase in the film thickness of one of the solutions a or B. In the case of applying marks on banknotes layer should be thinner 1:1. Going beyond the stated ratio(1:10)-(10: 1) makes no sense for practical reasons.The invention can be used as part of a passive system passive protection, such as cars, household items, expensive electronics, furs, etc.Currently in several European countries "European standard passive anti-theft". Part of this system are invisible codes that are only visible when illuminated with a UV lamp. In Russia, the interior Ministry began to implement the system since mid-1993, As can be seen from example 2, the invention can be applied MIA and FGC, as the inscription on the paper bill can be performed with a solution of (2-hydroxy-2-were) benzotriazole 10-4-10-5so lighting bills mercury lamp, typically used for these purposes, for example, DRG-100, it is not possible to read the inscription. Next on the bill is applied to the background solution containing a phosphor with a high quantum yield of luminescence, for example, 1,4-di(2-phenyl)oxazolyl benzene. In place of the overlay layer when illuminated with UV light on a blue background appears black hidden message.P R I m e R 1. On the surface of the metal put a layer of a composition containing 20 g of benzene (98%), 0.4 g of polystyrene (1.9%) and 0.02 g (0,01%) of 1,4-di-(4-phenyl-2-oxytrol benzene). After evaporation of benzene on the surface put a label composition containing 20 g of benzene, 0.4 g of polystyrene and 0.01 g 2(2-hydroxy-5-were-benzotriazole) and can stand up to the evaporation of the solvent. When illuminated with UV light of the main spot (background) lights up in blue (260 N. M.), and red label.P R I m m e R 2. On the surface of banknotes put the text composition containing RS 9.69 g (96.9 percent) of dimethylformamide, 0.3 g (3,0%) of polymethyl methacrylate and 0.01 g (0.1%) of 2-(2-hydroxy-5-methoxyphenyl)benzotriazole. After evaporation of benzene, the inscription is visible when illuminated with a powerful mercury lamp, for example DRSH-1000, the inscription is invisible when using a source of UV radiation less powerfully the TA and 0.01 g (0.1%) 1,4-di(2-phenyl)oxazolyl benzene. When illuminated with a mercury lamp inscription black color contrast stands out on a luminous bluish background. Other examples in the table. 1. Structural formulas of the compounds used are given in table.2. 1. Composition for covert recording information, comprising a solution containing a phosphor, a binder and an organic solvent, characterized in that the composition comprises a solution in the following ratio, wt.The phosphor 0,1 5,0
Binder 1 5
Organic solvent Else
and additionally includes a solution B containing a phosphor other than the phosphor of the solution, a binder and an organic solvent, in the following ratio of components, wt.The phosphor 0,1 5,0
Binder 1 5
Organic solvent Else
when the value of the solutions a and B in part 1 10 10 1.2. The way covert recording information by applying to the substrate solution And comprising a phosphor, a binder and an organic solvent, keeping to the evaporation of the solvent, education, film and lighting of the ultraviolet light, wherein the use solution in the following ratio, wt.The phosphor 0,PR B, including a phosphor other than the phosphor of the solution, a binder and an organic solvent, in the following ratio, wt.The phosphor 0,1 5,0
Binder 1 5
Organic solvent Else
when the value of the solutions a and B in part 1 10 10 1 and dried.
Rwhere R H (a); C6H5(b); N(CH3)2(c); CH3(d)
FIELD: organic synthesis.
SUBSTANCE: invention provides novel compound: 1-[2-(4,6-dichloro-[1,3,5]triazine-2-ylamino)phenyl]-benzo[d][1,3]oxazine-4-one, characterized by yellow luminescence. Preparation of this compound comprises preliminarily preparing 2-(2-aminophenyl)-benzo[d][1,3]oxazine-4-one by reaction of anthralic acid with thionyl chloride followed by reaction of thus prepared compound with cyanuric acid chloride. Compound is characterized by fluorescence maximum at 560 nm and spare solubility in most organic solvents. The latter enables use of the compound in polygraphic inks as fluorescent pigment.
EFFECT: enlarged assortment of luminophors.
2 cl, 1 dwg
FIELD: luminescent materials.
SUBSTANCE: invention provides novel electroluminescent material comprised of injecting layer, metal chelate complex-based active luminescent layer, hole-transition layer and hole-injecting layer. Luminescent substance is selected from oxyquinolate metallocomplexes of zinc 8-hydroxy-2-methoxyquinolate and zinc 8-hydroxy-2-methylquinolate. Electroluminescent material shows emission in green spectrum region.
EFFECT: increased heat resistance and widened choice of stable green-emitting materials.
2 cl, 3 ex
FIELD: organic chemistry.
SUBSTANCE: invention relates to new individual compounds of benzoxazine class and to a method for their preparing. Invention describes 2-aroylmethylene-2,4-dihydro-1H-3,1-benzoxazine-4-ones of the formula (I): wherein R means hydrogen atom (H) (a), -CH3 (b), -OCH3 (c), -OC2H5 (d), chlorine atom (Cl) (e) eliciting fluorescent properties and stable in UV-light. Also, invention a method for preparing abovementioned compounds. Proposed compounds elicit fluorescent properties and can be used as the parent substances for synthesis of new heterocyclic systems.
EFFECT: improved preparing method, valuable properties of compounds.
4 cl, 6 ex
FIELD: capillary defectoscopy; compositions of the color penetrants.
SUBSTANCE: the invention is pertaining to the color capillary defectoscopy, in particular, to the compositions of the color penetrants applied to the color control over the items of the high-duty. The penetrant contains the mixture of the following composition: xanthene dyes of the yellow-orange fluoresceine and red-dark blue rhodamine of 3-6 %, the surfactant of 10-40 %, the rest - the dissolvent. The ratio of the mixture of the yellow-orange and the dark blue - red dyes compounds 1:2, as the surfactant use neonol or syntanol. The technical result of the invention is creation of the color penetrant of the lowered volatility, the reduced flammability, the extra-high sensitivity ensuring detection of the minimal flaw with the opening width of 0.5-1 microns and the improved reliability and stability of the monitoring of the items in conditions of repairs and operation.
EFFECT: the invention ensures detection of the minimal flaw with the opening width of about 1 micron, improved reliability and stability of the monitoring of the items in conditions of repairs and operation.
FIELD: polymer materials.
SUBSTANCE: invention provides luminescent material showing semiconductor properties and being product of complex polymerization in glow discharge, which is formed as a supported polymer layer located either between electrodes or on any of electrodes. Starting pyrromethene complex is difluoroborate complex of 1,3,5,7,8-pentamethyl-2,6-diethylpyrromethene (Pyrromethene 567). Method of preparing luminescent semiconductor polymer material comprises glow-discharge polymerization for 2 to 120 min of Pyrromethene 567 vapors at temperature preferably 250-350°C, pressure 10-1 to 10-2 Pa, and discharge power 0.5-3 W. Resulting luminescent polymer is characterized by thickness preferably 0.001-10 μm, conductivity 1·10-10 to 5·10-10 Ohm-1cm-1 (20°C), luminescence emission maximum in the region of 540-585 nm at band halfwidth 55-75 nm. Polymer is obtained with quantum yield 0.6-0.8 and is designed for creation of film light-emitting devices.
EFFECT: improved performance characteristics of material.
13 cl, 3 ex
FIELD: organic chemistry, luminophores.
SUBSTANCE: invention relates to colorless at daylight organic luminophores, in particular, to novel, water-soluble, colorless luminophores A of the formula:
wherein X means oxygen (O) or sulfur (S) atom; Q means compounds of the formulas and wherein R1 and R2 taken separately or in common mean compounds of the formulas: -NHCH2COOM, -N(CH2COOM)2, Cl wherein M means Na, K, NH4. As comparing with the known colorless organic luminophores - optical whitening agents possessing with blue-sky blue fluorescence only, novel luminophores show fluorescence in the range from blue to yellow-orange color and can be used as components of fluorescent, colorless at daylight, inks for jet printers or stamp dyes.
EFFECT: improved and valuable properties of luminophores.
FIELD: organic chemistry.
SUBSTANCE: invention relates to novel compounds, namely zinc bis-[2-(tosylamino)benzylidene-N-alkyl(aryl, hetaryl)aminates] of the general formula (I): wherein Ts means tosyl; R means (C1-C6)-alkyl with exception isopropyl, (C1-C6)-alkyl-substituted phenyl, (C1-C6)-alkoxy-substituted phenyl with exception para- and ortho-methoxyphenyl, pyridyl, (C1-C6)-alkylpyridyl, or R + R form in common disulfidodialkyl group -(CH2)n-S-S-(CH2)n- wherein n = 1-3, but preferably to zinc bis-[2-(tosylamino)benzylidene-N-alkylidenemercaptoaminates] of the general formula (Ia): Compounds can be used for synthesis of light-radiating organic diode of white and visible light. Fluorescence can be observed in blue region of spectrum with fluorescence bands maximum at 428-496 nm. Quantum yields are 0.2-0.25.
EFFECT: valuable physical properties of compounds.
5 cl, 8 ex
FIELD: capillary luminescent flaw detection, possible use in aviation, automobile, shipbuilding and other branches of mechanical engineering, and also power engineering, chemical and nuclear industries for detection of surface defects, cracks, pores, foliating, abscesses, inter-crystallite corrosion and other defects of material discontinuity flaw type, primarily with small dimensions, in case of especially precise control of products.
SUBSTANCE: penetration agent includes organic phosphor, non-ionic surfactant and solvent, while as organic phosphor a mixture of phosphors from the class of coumarin colorants is used - mixture of donor-coumarin and acceptor-coumarin, as nonionic surfactant a specially defined substance is used, and as solvent a mixture of dibutyl phthalate and propylene carbonate is used with mass ratio ranging from 1:1,5 to 1:0,8. As donor-coumarin, 4-methyl-7-dethyl amine coumarin (K-47) may be used, and as coumarin-acceptor, at least one coumarin of yellow-green luminescence, with mass ratio ranging from 1,1:1 to 1,8:1.
EFFECT: increased sensitivity and reliability of flaw detection, while simultaneously reducing fire hazard and toxicity of used composition.
1 ex, 1 tbl
FIELD: polymer material.
SUBSTANCE: invention relates to polymeric multilayer fluorescently stained particles widely applicable for distribution of visible information and provides sheet-shaped fluorescence-emitting articles. These have at least two film layers, each of which contains fluorescent dye in polymer matrix. Stained film of the upper layer is characterized by higher resistance to UV emission than stained sublayer film, and article itself has specified fluorescent coloration differing both from coloration of said stained fluorescent sublayer film and from coloration of said stained fluorescent upper layer. Manufacturing process for such articles is also described. Articles may optionally contain light-returning elements suitable as warning signs such as pedestrian crossing signs and signs indicating school zones, which emit fluorescent yellow color.
EFFECT: ensured resistance to weather conditions, increased color durability, and improved coloration characteristics regulated by industrial standards for particular conditions.
37 cl, 14 dwg, 3 tbl, 11 ex
FIELD: polymer items possessing fluorescent properties and property of reflection in opposite direction; information and signaling appliances.
SUBSTANCE: proposed sheet item has sublayer of film coated with fluorescent paint at concentration of from 0.001 to 1.5 wt-% relative to polymer matrix of sublayer, film of overlayer coated with fluorescent paint at concentration of from 0.001 to 1.5 wt-% relative to polymer matrix of overlayer. Fluorescent film of overlayer coated with paint possesses higher resistance to light as compared with sublayer film. Sheet of painted fluorescent film of overlayer lies over sheet of sublayer fluorescent film. Sheet item has selected fluorescent color different from color of overlayer fluorescent film and from color of sublayer fluorescent film. Specification gives description of production of such items.
EFFECT: enhanced resistance to action of atmospheric conditions; enhanced durability of color; wide range of color.
53 cl, 17 dwg, 8 tbl, 15 ex