The method of obtaining fluorescent fluorescent pigments
(57) Abstract:The invention relates to the production of fluorescent fluorescent pigments, which can be used for coloring plastics, manufacturing brightly coloured advertising polymer films. Describes how to obtain fluorescent fluorescent pigments using a mixture of phosphor and dye, high temperature processing of the reaction mixture with acid and drying, and the mixture is subjected to a mixture of urea or melamine, benzosulfimide or p-toluensulfonate, urotropine and the dye With Rhodamine or Rhodamine 6g in performe followed by the addition of the phosphor, the phosphor and the dye is used in an amount of from 1 to 3% by weight of the total mixture, the condensation of the resulting mixture with a gradual increase in temperature prior to the formation of resinous products the hot reaction mixture with a solution of oxalic acid with the addition of dinitrosopentamethylene acid to pH 6-7 and drying at 165oC. table 2. The present invention relates to methods for fluorescent fluorescent pigments, which can be used for coloring plastics, manufacturing brightly coloured R is santich pigments, which are solid solutions of phosphors or dyes in polyester, urea -, melamine-formaldehyde and other polycondensation resins (A. C. the USSR 192328, op. 06.02.1967 in BI 5; A. S. USSR 248204, op. 10.07.1969 in BI 23; A. C. SU 1484826, op. 07.06.89. in BI 21 and so on].Optical performance pigments (brightness, the ability to paint and etc.) strongly depend on the composition and size of the pigment particles. Reducing the size of the latter reduces the consumption of pigments for coloring. The grinding of the pigments on the basis of the condensation resin in fine powder energy-intensive, consuming time [A. S. USSR 192328, op. 06.02.1967 in BI 5], which is a disadvantage of this 10 way. This disadvantage is only partially resolved upon receipt of the pigment and the composition proposed in the invention Composition to obtain the fluorescent pigment" [A. C. SU, 1484826 A1, op. 07.06.89 in BI 21].Closest to the proposed invention is [A. S. USSR 235890] a method of obtaining a fluorescent fluorescent pigments based on urea resin using benzene - or p-toluensulfonate, phosphor 3-methoxybenzonitrile, 1,3,5-triphenyltetrazolium and dye selected from the group of: rhodamine, rhodamine 6g, sulphonated is to work with these compounds at a certain ratio with subsequent treatment of the reaction mixture with a mineral acid to a pH of 1-3. This method allows you to obtain a pigment in the form of a homogeneous colored powder with a small remainder prosave on the sieve 0.1 (1.5-1.95). However, this method assumes that the synthesis of urea resin, and the treatment of the reaction mixture after the condensation of a sufficiently large amount of acid, which complicates the process.The aim of the invention is to simplify the process, increasing the yield of the fine fractions of pigment by grinding and prosave, increasing the brightness of the pigment. This objective is achieved in that according to the method of obtaining fluorescent fluorescent pigments using a mixture of phosphor and dye, high temperature processing of the reaction mixture with acid and drying, characterized in that the mixture is subjected to a mixture of urea (urea or melamine, benzosulfimide or p-toluensulfonate, paraform, urotropine, dye selected from the group triarylmethane diadinoxanthin dyes: rhodamine, rhodamine 6g, followed by the addition of phosphor in the following ratio, wt.h.:
Urea or melamine - 45-55
Benzosulfimide or p-toluensulfonyl - 9-1o 3% of the total mass
the condensation of the resulting mixture with a gradual increase in temperature prior to the formation of resinous products, the hot reaction mixture with a solution of oxalic acid with the addition of dinitrosopentamethylene acid (not less than 30% of the total amount of acid, but not more than 6% of the total weight of the pigment) to pH 6-7 and drying at 165oC. the Drying is completed after the termination of the emission of volatile. Obtained after drying the semi-finished crumbles easily and frays.The amount of dye and the phosphor is limited due to the phenomenon of "clearing" of the fluorescence characteristic of such systems.The number dinitrosopentamethylene acid should not exceed 6% of the total mass of the obtained pigment (increase begins to decrease brightness, with a slight increase in output of fines). Drying of the product at 160-165oAllows you to complete all the condensation reaction, to remove volatile, i.e., to improve consumer quality pigments.The use of the composition of urotropine increases the brightness of the pigment, probably due to the synthesis of resin a slightly different composition compared to the resin obtained from the components without the latter, due to clonality improve abrasion pigment in powder, probably in two moments: the evolution of a gas by decomposition and the effect on the mechanism for obtaining resin (introduction dinitrosopentamethylene acid already at the time of mixing the main components also gave the effect of improving the abrasion, i.e., it indicates the complexity of the action of the additive in the composition).The invention is illustrated by the following examples.Example 1
A mixture consisting of 50 g of urea, 10 g of p-toluensulfonate, 10 g of methenamine, handle 56 g Performa (formalin 40%), in which pre-dissolved dye rhodamine 6g in the amount of 1.5 g, mix, add Luminor 3-methoxybenzene in the amount of 0.35 g, is heated on a sand bath in the reaction vessel to 105oWith and condense with constant removal of water up until the temperature rises to 135oWith, then introduce a solution of oxalic acid containing 30% dinitroresorcinol acid up until the pH of the system will not be equal to 6, after which the resin is poured on the metal strip and placed for drying in a heat chamber (165oC). Drying finish after the termination of the emission of volatile. Obtained after drying the semi-finished crumbles easily and frays.Example 2.
< / the, it is assumed that methenamine is completely decomposed to formaldehyde and ammonia
< / BR>Example 3.
Urea or melamine - 45-55
Benzosulfimide or p-toluensulfonyl - 9-11
Methenamine - 48-52
Paraform - 51-61
The phosphor and the dye is From 1 to 3% by weight of the total mixture
the condensation of the resulting mixture with a gradual increase in temperature prior to the formation of resinous products, the hot reaction mixture with a solution of oxalic acid with the addition of dinitrosopentamethylene acid to pH 6-7 and drying at 165oC.
alpha particles in the energy range 2 - 10 MeV (even when there are high levels of background gamma radiation);
electrons in the energy range 200 - 1000 Kev,
low-energy gamma rays in the energy range 10 - 50 Kev, as well as the manufacture of other devices, which use the phenomenon of scintillation (electrical and x-ray fluorescent screens, electro-optical converters, etc.,)
FIELD: highway engineering; highways structures and markings.
SUBSTANCE: the invention is pertaining to the field of highway engineering, mainly, to highways structures and markings, in particular, to photoluminescent material for the highways marking and to the highway structure. The invention presents the new photoluminescent material used for marking the highways traffic lanes. The photoluminescent material for the traffic lanes marking is made in the form of the paste containing: from 7 up to 95 mass % of the transparent polymeric component selected from the group consisting of the methacrylic acrylic component, the component of the type of non-saturated polyester, the epoxy component and the component of the silicone type, the photoluminescent colorant component with the average diameter of particles from 10 up to 2000 microns selected from the group composed of the material of the type of strontium aluminate and the material of the zinc sulfide type, and including at least one additional colorant component with the average diameter of the particles from 0.1 up to 40 microns selected from the group consisting of the white colorant, the yellow colorant and the orange or red colorant. At that the ratio of the mass of the photoluminescent colorant component and the mass of the additional colorant components makes of no more than 3.0. The invention also describes the highway structure containing the indicated photoluminescent material. The offered photoluminescent material for the traffic lanes marking possesses the required wear-resistance and resistance to the atmospheric effects, and also obtains the effective photoluminescence and may be used not only for the white lines, but also for the lines of various colors, and the covered with it lines are not slidable.
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
FIELD: electronic engineering, applicable in production of gas-discharge indicating panels.
SUBSTANCE: use is made of pastes, in the production of process of which the filler powder is mixed and ground in and organic solvent taken in amounts respectively 1.5 to 245 percent by mass and 75 to 98.5 percent by mass. To improve the paste quality, the filler powder and organic solvent mix is agitated with addition of balls, 2 to 5 mm in diameter, taken in amounts of 60 to 100 percent of the mix mass,, for preparation of the paste use is also made of am organic binder heated to 45-65 C.
EFFECT: provided forming of components of the gas-discharge panel with a high degree of resolution.
3 cl, 3 ex
SUBSTANCE: luminescent paint for treating surfaces of objects contains a film-forming component in a mixture of organic solvents, photoluminescent phosphor and filler. The photoluminescent phosphor used is strontium aluminate, activated europium, dysprosium and yttrium. The film-forming component is a 15% solution of chlorinated polyvinylchloride (CPVC), taken in the ratio 1:1.3-2. The CPVC is made from a mixture of solvents, containing butyl acetate, acetone and toluene in ratio of 1:2:5 respectively.
EFFECT: luminescent paint for treating surfaces of various indicators, especially road signs, the coating of which should have high resistance to long fluorescent lag.
4 cl, 2 tbl
FIELD: paint and varnish coverings.
SUBSTANCE: luminescent enamel contains a mix of solutions of two film-forming components - 50% solution polymethylphenylsiloxane pitch in toluene and 15% solution of a butyl methacrylate copolymer and methacrylic acid or a butyl methacrylate copolymer and amide of methacrylic acid in mixes of organic solvents, a luminescent pigment with long afterglow - strontium-calciumvaluminum silicate, activated by europium and neodymium, if necessary an additional pigment - titanium dioxide or zirconium dioxide, filler - aerosil at the declared proportion of the components. Also the method of obtaining of luminescent enamel and a product, where the described enamel is applied, is described.
EFFECT: allows obtaining coverings with high luminescent effect.
6 cl, 2 tbl, 14 dwg
SUBSTANCE: invention relates to novel (3Z)-4-aryl-4-hydroxy-1-(1,3,3-trimethylindolin-2-ylidene)but-3-en-2-ones of general formula 3: Ar=Ph (a), C6H4Me-n (b), C6H4Cl-n (c), C6H4OEt-n (d), which exhibit fluorescent properties and can be used as products for synthesis of novel heterocyclic systems, as well as substances for marking samples and additives for light-reflecting paints. Synthesis method thereof is described.
EFFECT: obtaining novel compounds.
4 cl, 4 ex
SUBSTANCE: disclosed is a luminescent composition for marking roads, which contains an aluminate type luminescent (phosphorescing) pigment and polymer binder selected from a group comprising: epoxy, urethane, acrylate, alkyd and composite polymer resins. The luminescent pigment is pre-treated in order to protect it from moisture using solutions of reagents selected from a group comprising mono-substituted phosphates, H2SO4, H3PO4, a mixture of tri- or disubstituted phosphates and at least one acid: HCl, H3SO4 or HNO3. Disclosed also is a luminescent paint for making roads, which contains an aluminate type luminescent (phosphorescing) pigment or a luminescent composition and a water or non-water based road paint or enamel. In another version, the luminescent paint is obtained by mixing a pigment which first protected from hydrolysis, polymer binder and a water or non-water based road paint or enamel: - luminescent pigment 2-60; polymer binder 4-20; road paint or enamel 94-20.
EFFECT: invention provides reliable protection of the pigment from hydrolysis, enables regulation of the amount of polymer binder which affects colour characteristics and technological aspects, as well as the size of particles of the luminescent pigment, which is important when mixing the pigment with components of compositions or paints.
4 cl, 8 tbl, 58 ex
SUBSTANCE: disclosed is a colourless luminescent decorative paint containing a luminophor and binder. The luminophor is an organic luminophor with anomalously large Stokes shift which is greater than 100 nm, which is colourless in daylight and luminescent in the visible spectral region when illuminated with a source of UV radiation. The organic binder is a transparent organic substance which does not absorb long-wave ultraviolet radiation in the 365-420 nm range.
EFFECT: obtaining fast and stable luminescent paint which contains a colourless organic luminophor, which enables to create a latent image which appears upon illumination with UV radiation which is invisible in daylight as well as in the dark, in the absence of UV radiation, the paint ensures high strength of the polymer base of the decorative layer of the article obtained using said paint.
13 cl, 8 ex
SUBSTANCE: described is a coloured coating composition containing a white primary paint and at least one colouring pigment in a form which can be easily mixed with the white primary paint. The white primary paint contains a film-forming polymer, a liquid carrier, one or more opaque white pigments and one or more filling materials. The coloured coating composition has light reflection coefficient Y less than 110 and greater than a value defined from the equation Y=mC+K, where 25>C>1.0, C is colour saturation of the coloured coating composition, m and K are empirical coefficients selected according to the type and number of types at least one colouring pigment and depend on the hue angle of the coating composition.
EFFECT: composition for applying on building surfaces makes said surfaces lighter than when using existing paints with close colour saturation.
7 cl, 2 dwg, 10 tbl
SUBSTANCE: invention relates to a security feature having a luminescent component having at least one luminophore consisting of at least one doped host lattice, and a component camouflaging the luminescent component, wherein the camouflaging component has chemical elements that have similar structure-chemical properties to the chemical elements of the luminescent component, wherein the chemical elements of the camouflaging component and the chemical elements of the luminescent component are formed by different chemical elements.
EFFECT: invention also relates to valuable document having said security feature.
17 cl, 4 ex
SUBSTANCE: invention relates to a security feature having a luminescent component that has at least one luminophore, consisting of a doped host lattice, and a component camouflaging the luminescence component, wherein the camouflaging component has at least two substances, wherein the first substance of the camouflaging component has an X-ray diffractogram that conceals the X-ray diffractogram of the luminescent component and the second substance of the camouflaging component has at least one cationic element of the luminescent component and at least one cationic element of the first substance of the camouflaging component, wherein the luminescent component and the first substance of the camouflaging component are formed from different cationic elements.
EFFECT: invention also relates to valuable documents having said security feature.
16 cl, 3 dwg, 9 ex