Ink for inkjet printing
(57) Abstract:The invention relates to ink for ink-jet printing, including personal printers. Paint includes flotation-oxal or more dense fractions of 0.05-6 wt.%, water-soluble dye is not soluble in the flotation-oxala or more dense fractions, 0.5 to 6 wt.% and water the rest up to 100 wt.%. Technical result: paint allows the use of readily available and safe sanitary raw material for production of inks for inkjet printing with good performance characteristics. 3 table. The invention relates to aqueous dye compositions used for inkjet printing on paper, including personal inkjet printers.There are a large number of water paints proposed for inkjet printing.The easiest part is the solution of the dye in water. The downside of it is quick drying out and clogging of nozzles of the printhead and a relatively slow drying of the ink on the paper. The device in printers for sealing head in inoperative position, used all personal printers, and special containers for printing the Xia paint, containing in addition to dye the non-volatile solvent for him and the water. As a non-volatile solvent use alcohols, such as glycerin, ethylene glycol, triethanolamine, other high-boiling alcohols (TSB, and.with. USSR N 1513007, Pat. USA N 5352283, and.with. USSR N 1825807). With the introduction of a sufficient number of non-volatile solvents, the problem of drying of the composition in the cylinder is solved, but there are three other problems: paint dries very slowly on paper, the printhead nozzles clogged crystallizing from a solvent dye, resulting in poor print quality (stripes on the letters), the printed text is characterized by the worst resistance than when using just the solution of the same dye in water.To avoid crystallization of the dye in the composition is administered surfactant, such as sulfinol (and.with. USSR N 1513007), gidroksietilirovanny polyethylenimine (U.S. Pat. USA N 5352283), but in this case, the sensitivity Viechtach to moisture may increase.Significantly improves the drying rate and improves the water resistance of the print when used as a component along with the non-volatile solvent for the dye (polyhydric alcohols) volatile water-soluble spadester.com of such compositions is a certain fire paint which is inconvenient in individual use, but, most importantly, the paint gets a smell, noticeable when printing, and accelerated drying of the composition in the printhead. Especially strongly deteriorates the resistance to drying out when using low-boiling volatile alcohols - ethanol, propanol, isopropanol. The use of high-boiling volatile alcohols and spitefire, such as ethyl cellosolve and datetoday alcohol, other high-boiling volatile alcohols and spitefire, slows down the drying of the composition, but not enough, and the printhead is not in working condition requires immediate seal that prevents evaporation.Known compositions containing liquid-phase dye, including compositions with the addition of volatile alcohols, have their drawbacks and, in addition, these compositions are unattractive to domestic industry, since the production of the required liquid dyes in our country is not organized.Thus, the prior art of obtaining compositions for inkjet printing using water-soluble solid (crystalline) dyes is to use, in addition to the dye and water, the organic additives, representing nelere, adopted for the prototype (4), including as the organic additive is a mixture of amerosport (non-volatile solvent for the dye) and diacetone alcohol (volatile modifier) in a ratio of components, wt.%:
Water-soluble dye - 1-4
Amerosport - 3-10
Datetoday alcohol - 10-25
Water - the Rest
Composition adopted for the prototype, albeit to a lesser extent, but has all the disadvantages of the known compositions with non-volatile solvent dye, in addition, the use diacetone alcohol having irritating the respiratory tract properties, makes it difficult to use the composition in the personal printers.The aim of the invention is a paint composition for inkjet printing, not to seal the die printhead with drying out in the air, speed of drying and water resistance of the seal and no air polluting when printing.This goal is achieved by a paint composition comprising a water-soluble dye, water and an organic additive, characterized in that the organic additives used flotation-oxal or more dense fractions, and as a dye is a water - soluble dye is not soluble in flotation is racial, insoluble in flotation-oxala or more dense fractions of 0.5 -
Flotation-oxal or more dense fraction of 0.05 -
Water - the Rest
The invention differs from the prior art by the fact that as an organic additive used is not a solvent for the dye, and its non-volatile precipitator - flotation-oxal. When this is achieved the unusual and paradoxical for the introduction of a non-volatile additive effect of accelerating the drying, this effect also occurs with the simultaneous use of non-volatile solvents such as glycerin, triethanolamine, i.e. paint containing higher amounts of non-volatile dries faster.Flotation-oxal is a high-boiling side product of the production of 4,4-dimethyl-1,3-dioxane used in the manufacture of isoprene. Flotation-oxal is a heavy product, has long been produced by the industry and is widely used, primarily as a flotation additive to drilling mud in the oil industry, then as a plasticizer in the production of rubbers, plastics and paints and varnishes (TC 2452-029-05766801-94), as the remover nucleonic resins.with. USSR N 1813776, publ. 1993), as raw material for the production of protective with the 20oC derivatives of dioxane and Piran, including oxyalkylation and bis - Spiro-doxycycline. The composition of the flotation reagent complex. In addition to the non-volatile, having a density of more than 1.0 g/cm3flotation may contain a small amount of volatile, such as dimethyldioxirane. Active principle complex mixture of flotation reagent-oxala for the purposes of this application is not revealed, except that an efficient dense and non-volatile fractions.The more dense fractions of oxala can be obtained by any known method, for example by distillation under vacuum, distillation with steam, air purge when heated, the phase separation by adding water, etc.In the examples of the application used:
flotation-oxal THE 2452-029-05766801-94 brand T-66 (technical requirements TU - in the Annex to the description)
the fraction of the flotation reagent obtained in Cuba after the distillation with steam, the density of 1.08 g/cm3the initial volatility under 202oC 0,095 mg/cm2in an hour,
the fraction of the flotation reagent, obtained by the distillation of the volatile from the heavier phase, highlighted by the addition of water, with a density of 1.13 g/cm3the initial volatility under 202oC 0,069 mg/cm2in the hour. Volatility was determined, Viata average volatility in the first three days. When continuing to test samples showed a decrease in volatility, the sample density of 1.08 g/cm3when testing the following 72 hours showed volatility 0,061 mg/cm2per hour, and the sample with a density of 1.13 g/cm30,034 mg/cm2per hour, for comparison, the volatility of distilled water in a parallel test of 45.6 mg/cm2an hour.The dye used according to the invention is chosen from the group of water-soluble dyes are not soluble in the flotation-oxala. Can be used a mixture of dyes. In the examples of the application used nigrosine according to GOST 4014, acid blue-black OST 6-14-21, straight black ZS THE 6-14-948 insoluble oksale dyes according to GOST 10850. The insolubility of the dye is determined in drip the sample under a microscope (h): on a glass slide put a drop of liquid, making the drop from the tip of the scalpel sample dye, cover with a cover glass, incubated and examined under a microscope. The dye is insoluble, if under a microscope visible neraspavsheysya crystals of the dye, while neglect to change the color of the fluid coming through the dissolution of impurities. On a glass slide put a drop: flotation reagent-oxala with a density of 1.03 g/cm3
Water-soluble dye is not soluble in the flotation-oxala or more dense fractions of 0.5 -
Flotation-oxal or more dense fraction of 0.05 -
Water - The Rest.
FIELD: printing inks.
SUBSTANCE: invention relates to materials generating charge, in particular to printing inks and toners for protective marking and applying protective markers in order to reveal falsifications and counterfeits. Use of counterfeit protection technology is described involving printing ink composition containing charge-generation substance and a medium, wherein charge-generation substance has maximum absorption in near IR region within a range of 700-1500 nm and in visible region within a range of 400-700 nm, this substance being compound selected from a type of polymorphous modification of X form of metal-free phthalocyanine, type of polymorphous modification of Y form and phase I and II forms of titanyloxyphthalocyanine, polymorphous modification of phase II form of vanadyloxyphthalocyanine, and polymorphous modification of phase V form of hydroxygalliumphthalocyanine and methoxygalliumphthalocyanine. Printing ink composition is applied onto an article or substrate using known printing procedure. Methods of establishing authenticity of an article or substrate are also described, which consist in determining characteristic absorption of marker in near IR region.
EFFECT: enabled effective protection of articles or substrates when using printing inks containing, for example, blue or green dyes, whose absorption bands can be shifted to infrared region and partially mask absorption properties of marker.
20 cl, 4 tbl, 6 ex
FIELD: printing technique.
SUBSTANCE: set and method of printing can be used for printing light-absorbing signs of protection of printed items. Set of printing ink for printing of light-absorbing signs has at least two dyes. Any dye has at least one dyeing matter, pigment of dye which absorbs visible light. Set of printing inks has first and second groups of dyes. Dyes from first group additionally have mark with preset spectral absorption characteristic, preferably with characteristic relating to absorption. Mark has absorption maximum within wavelength range of 700-900 nm, preferably, 780 nm, and the mark practically doesn't absorb light within visible spectrum of absorption. Dyes of second group has dyeing matter, dye or pigment, which absorbs light within visible light spectrum and they have the same maximum of absorption within IR-red spectrum at wavelength around 700 nm as spectral characteristic within IR-red range of mark, Method of printing signs, printed item and set of dyes, including four-color set of printing inks and IR-mark, are described.
EFFECT: reliability of identification of authenticity of item independently on color of signs.
15 cl, 5 dwg, 2 app
FIELD: printing dyes.
SUBSTANCE: invention relates to concentrate of printing dyes and a method for its preparing. Invention describes dye concentrate for offset printing in form non-sticky granules covered by envelope and/or non-sticky granules without envelope with the pigment content in its 45-65 wt.-%. Envelope-cover consists of powder-like solid materials, wax or liquid materials, for example, oil. Also, invention describes a method for preparing indicated concentrate that involves grinding dye concentrate for offset printing and its covering by envelope wherein covering by envelope is carried out by direct applying powder-like solid material on the printing dye concentrate and wherein powder-like solid materials are combined firstly with liquid carrier followed by its evaporation, or solid envelope is prepared by applying melted material useful for coating. Invention provides decreasing viscosity and stickiness of the printing dye concentrate and allows simple transporting and simple mixing with additional components.
EFFECT: improved and valuable properties of concentrate.
9 cl, 12 ex
FIELD: chemical industry; methods of production of the coatings with the strong adhesion.
SUBSTANCE: the invention is pertaining to the method of production of the coatings with the strong adhesion on the inorganic or organic substrate, which provides, that one inorganic or organic substrate is subjected to the treatment with the low-temperature plasma, the corona discharge or the treatment with the gaseous flame, at the normal atmospheric pressure deposit on the inorganic or organic substrate one or several photoinitiating agents or the mixtures of the at least one ethylene- unsaturated with the monomers and-or the oligomers containing at least one ethylene- unsaturated group, or the solutions, suspensions or emulsions of the above indicated substances using the suitable methods; the above indicated substances are not necessary subjected to drying and-or to the electromagnetic irradiation; and either on the preliminary so treated substrate deposit the composition including at least one ethylene- unsaturated monomer or the oligomer and the coating is subjected to hardening under action of the UF/ the visual rays emission or the electron beam; or on the substrate with such a preliminary coating made out of the photoinitiating agent they apply the printing ink coating and dry it. The method has the high efficiency and allows to produce the coating with the good adhesion and is suitable for to production of the products made out of the various plastics materials and-or metals or the glass types with the coatings having the good adhesion.
EFFECT: the invention ensures the high efficiency of the method, production of the highly adhesive coatings suitable for manufacture of the products made out of the various plastics materials, metals or the glass types.
18 cl, 19 ex
FIELD: polymer production.
SUBSTANCE: invention relates to production of polymeric binders for toner and can be used for copying appliances and printers. Process comprises separate preparation via emulsion polymerization of (i) low-molecule weight copolymer of styrene (α-methylstyrene), 2-ethylhexyl acrylate (or butyl acrylate) and methacrylic acid at monomer weight ratio (88-91.5):(8-11):(0.5-1.0) with intrinsic viscosity in toluene 0.08-1.2 dL/g and (ii) high-molecule weight copolymer of styrene (α-methylstyrene) and 2-ethylhexyl acrylate (or butyl acrylate) at monomer weight ratio (88-92):(8-12) with intrinsic viscosity in toluene 1.0-1.28 dL/g. In both cases, polymerization is carried out at 60-70% to monomer conversion close to 100%. Resulting latexes of low- and high-molecule weight copolymers are supplemented by stopper and antioxidant and then mixed with each other at "dry" weight ratio between 70:30 and 75:25 and coagulated intrinsic viscosity in toluene 1.0-1.28 dL/g. with electrolyte solutions to form polymer characterized by intrinsic viscosity in toluene 0.4-0.45 dL/g and polydispersity Mw/Mn, which ensures bimodal molecular weight distribution of copolymer. The latter has melting (spreading) point 125-137°C and softening temperature 70-75°C.
EFFECT: improved quality of electrographic printing.
2 cl, 1 tbl, 4 ex
FIELD: marking and identification of protected articles, such as bank-notes, service papers, labels, foil, fiber, card or industrial products.
SUBSTANCE: proposed printing ink contains dyes or pigments of expanded or hyperchromatic color space which is not reproduced by means of standard 4-color reproducing equipment. Identification of marking includes mathematical conversion of non-processed spectral information into statically independent hyperchromatic coordinates and comparison of selected hyperchromatic coordinates with respective standard magnitudes. Specification gives also description of printing inks and method of marking and identification of articles.
EFFECT: enhanced efficiency.
25 cl, 6 dwg, 2 tbl, 4 ex
FIELD: chemical industry; printing industry; other industries; methods of production of the composition of the paint including the optically changeable pigments.
SUBSTANCE: the invention may be used in production of the optically changeable pigments. The optically changeable pigment includes the stratified set composed of the different materials, in which, at least, one of the layers represents the reflecting layer and, at least, one of the other layers represents the dielectric layer. At least, one of the surfaces of the indicated layers is subjected to the chemical action. The indicated materials also include, at least, one of the layers, which represents the semitransparent metallic layer made out of chromium and also one or more metals and-or their inorganic compounds. At that the metal and-or its inorganic compound are subject to corrosion. The subjected to the chemical action surface of the reflecting and dielectric layer along the edge of the layering block of the edge structure of the pigment is coated with the passivating agent, which is selected from the group consisting of the organic esters and the fluorinated organic esters of the phosphoric acid, having the following structural formula: (Rf-CH2-CH2-O)xP(O)(OH)y, where Rf=F-(CF2-CF2)z, х=1 or 2, у=2 or 1, х+у=3, z=l-7. The composition of the printing paint includes the binding system, water and the optically changeable pigment. The invention allows to diminish oxidation of the metallic layers and dissolution of the dielectric layers of the optically changeable pigment and to use it in the compositions of the printing paint.
EFFECT: the invention allows to diminish oxidation of the metallic layers and dissolution of the dielectric layers of the optically changeable pigment and to use it in the compositions of the printing paint.
22 cl, 7 ex
FIELD: chemical industry; printing industry; powder metallurgy industry; cosmetic industry; other industries; production and application of the highly anticorrosive metallic pigments.
SUBSTANCE: the invention is pertaining to production of the of the highly anticorrosive metallic pigments similar to laminas, which may be used in production of the printing ink, plastic materials, cosmetics, the powder coatings and in other branches of industry. The pigments have on their surfaces: the metallic substrates similar to the laminas and treated with the compounds of the phosphoric acid and-or the compounds of the boric acid; one or more layers of the coatings consisting of one or more hydrated oxides of the metals of one or more metals selected from the group, which includes silicon, aluminum, zirconium, titanium and tin. On the basis of the highly corrosive metallic pigments similar to laminas it is possible to produce the interferential colored pigments. The invention allows to increase the anticorrosive resistance of the metallic pigments at the expense of saving without the faults of the initial surface smoothness of the similar to the laminas metallic substrates, to increase the homogeneity and density of the layers of the hydrated oxides of the metals.
EFFECT: the invention ensures the increased anticorrosive resistance of the metallic pigments, saving the initial surface smoothness of the similar to the laminas metallic substrates, the increased homogeneity and density of the layers of the hydrated metals oxides.
40 cl, 9 ex, 4 tbl, 8 dwg
FIELD: print engineering.
SUBSTANCE: invention provides ink containing first fluorescent color material emitting fluorescence at specified emission wavelength used for measurement or determination of excitement at specified excitement wavelength; and second fluorescent color material emitting fluorescence when excited at specified excitement wavelength, said second color material being contained in larger amount than said first color material. To obtain fluorescence at desired emission wavelength, excitement spectrum of the first color material in ink should have peak wavelength range adjoining specified fluorescent wavelength, and emission fluorescence spectrum of the second color material has emission wavelength range that includes at least above-mentioned peak wavelength range.
EFFECT: enhanced fluorescence intensity due to presence of several fluorescent coloring substances.
9 cl, 26 dwg, 3 tbl, 6 ex
FIELD: printing technology.
SUBSTANCE: paint for ink-jet printing contains synthetic food colourant, glycerin and sodium dodecylbenzenesulfonate as surface active substance, sorbit acid as preservation agent, liquid ammonia, isopropyl alcohol and distilled water. Environmentally clear, affordable and cheap components are used as painting ingredients.
EFFECT: four-colour printing with fast paint setting on paper; compatibility with any printing units and prevention of contacting printing units damage.
1 tbl, 3 ex