Waterless ink composition for inkjet printing

FIELD: printing industry.

SUBSTANCE: waterless ink composition for inkjet printing contains a pigment, a polymer in an amount of 1 to 20 wt % in terms of total weight, dispersing of pigment, organic solvent, and alcohol containing an amino group in an amount of 0.01 to 3 wt % in terms of total weight. The alcohol containing an amino group is selected from the group consisting of 2-amino-1-butanol, 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol and tris(hydroxymethyl) aminomethane. As the polymer the ink contains polyester, acrylic resin or polyvinyl chloride. The aqueous extract of the said waterless ink composition has pH ranging from 6.0 to 10.0.

EFFECT: increased stability of its pressure injection and the absence of clogging the nozzle of the print head with achievement of high quality printing.

7 cl, 1 tbl, 5 ex

 

The scope of the invention

The present invention in General relates to anhydrous compositions of inks for inkjet printing. More specifically, it relates to anhydrous compositions of the ink (ink for inkjet printing, which does not cause blockage (clogging) of the nozzles of the printhead device for inkjet printing, has high stability (resistance) of the discharge and ensures high print quality of printed materials.

Prerequisites to the creation of inventions

There are a large number of different compositions pigmented inks for ink jet printing using different solvents. However, when producing a print using the device for inkjet printing using such compositions pigmented paint, it may be clogged nozzle device for inkjet printing, which reduces the print quality of the printed material. Moreover, even if successfully made the printing of the printed material with the use of such compositions pigmented paint, the color characteristics are not necessarily satisfactory,

For example, for water-based paints containing 2,2-dibutil-1,3-propandiol (JP-A No. 2007-009126), a study was conducted, which showed excellent stability of the discharge.

Study was also undertaken compositions pigmen the different paints solvent-based inkjet, which contain at least esters of glycol and/or at least lactoovo connection and/or 2-pyrrolidone in a solvent (JP-A No. 2006-056990.

The invention

The present invention is to solve these problems. In accordance with the present invention offers the anhydrous composition of the ink for inkjet printing, which does not cause clogging of nozzles of the printhead device for inkjet printing and delivers high discharge stability of the ink, which allows to obtain high quality print.

The authors of the present invention conducted in-depth research, to obtain the results. They found that if you enter into the composition of the paint containing the amino alcohol, it is possible to obtain anhydrous composition of the ink for inkjet printing, having a high stability of the discharge, which allows to solve the problem of the present invention.

Specifically, in accordance with the present invention offers the anhydrous composition of the ink for ink-jet printing, which comprises a pigment, a polymer dispersant of the pigment, organic solvent and the alcohol, the content containing the amino alcohol is from 0.01 to 3 wt.%, in terms of total weight.

The use of anhydrous compositions of inks for inkjet printing in accordance with izaberete the receiving eliminates clogging of the printhead nozzles device for inkjet printing, as well as ensures high print quality of the printed material.

Detailed description of the invention

In the anhydrous compositions of inks for inkjet printing in accordance with the present invention must be used containing the amino alcohol together with a pigment, a polymer, a pigment dispersant and an organic solvent.

The following is a description of the relevant components of the anhydrous composition of the ink for inkjet printing in accordance with the present invention.

In the anhydrous compositions of inks for inkjet printing in accordance with the present invention can be used such pigments, yellow pigments 12, 13, 14, 17, 20, 24, 31, 55, 74, 83, 86, 93, 109, 110, 117, 120, 125, 128, 129, 137, 138, 139, 147, 148, 150, 151, 153 (yellow Nickel complex type Nitron), 154, 155, 166, 168, 180, 181 and 185, orange pigments 16, 36, 38, 43, 51, 55, 59, 61, 64, 65 and 71, red pigments 9, 48, 49, 52, 53, 57, 97, 122 (chinagreen purple (Magenta)), 123, 149, 168, 177, 180, 192, 202, 206, 215, 216, 217, 220, 223, 224, 226, 227, 228, 238, 240, 244 and 254, purple pigments 19 (chinagreen purple), 23, 29, 30, 32, 37, 40 and 50, blue pigments 5, 15:1, 15:3, 15:4, 15:6, 22, 30, 64 and 80, green pigments 7 (green chlorinated phthalocyanine) and 36 (green commercially available brominated phthalocyanine), brown pigments 23, 25 and 26, black pigments 7 (carbon black), 26, 27 and 28, titanium oxide, iron oxide, ultramarine blue, yellow crowns, zinc sulfide, blue is obalt, barium sulfate, calcium carbonate, etc. the Number of added pigment can be determined according to the type of pigment used. However, it usually ranges from 0.1 to 15 wt.%, but mainly from 0.5 to 10 wt.%. When the specified amount is less than 0.1 wt.%, reduced coloring ability of the paint. When the specified number exceeds 15 wt.%, there is an increasing tendency of clogging of the nozzle.

Anhydrous composition, ink for inkjet printing in accordance with the present invention contains a polymer as a binder, as usual composition of paint. Such polymers can be polymers that are used as binders in conventional paint compositions without any restrictions. As such polymers can be mostly used polyesters, acrylic resins and vinylchloride.

As the polyesters can be used as saturated polyesters, unsaturated polyesters. Complex polyester can be obtained by the condensation reaction between a polybasic acid and polyhydrated alcohol. As examples of the polybasic acid for use in complex polyester can include: aromatic dicarboxylic acids such as phthalic acid, isophthalic acid, terephthalic acid, 1,5-naphthalene decarb the new acid, 2,6-naphthalene dicarboxylic acid, 9,10-anthracene dicarboxylic acid and digenova acid; aromatic hydroxycarboxylic acids such as p-hydroxy benzoic acid and p-(hydroxyethoxy) benzoic acid; aliphatic dicarboxylic acids such as succinic acid, adipic acid, azelaic acid, sabotinova acid, dodekanisa dicarboxylic acid; aliphatic unsaturated polyvalent carboxylic acids such as fumaric acid, maleic acid, taconova (metilenlaktony) acid, musicanova acid, cyclohexanone dicarboxylic acid, dimer acid, trimeric acid and tetramer acid; alicyclic dicarboxylic acids such as hexahydro phthalic acid, tetrahydro phthalic acid; polyvalent carboxylic acids, such as trimellitate acid, tremezzina acid and pyromellitate acid. Alternative instead of part of the polybasic acids may be used monobasic acid. As examples of monobasic acids can be lead acid such as benzoic acid, chlorbenzene acid, brabantia acid, parahydroxy benzoic acid, t-butyl benzoic acid, naphthalene carboxylic acid, 3-methyl benzoic acid, 4-methyl benzoic acid, salicylic acid, thiosalicylic acid, phenyl acetic acid anthracene carboxylic acid, t-butyl naphthalene carboxylic acid and cyclohexyl, aminocarbonyl benzoic acid.

As examples of polyhydric alcohols for use in complex polyesters can lead aliphatic polyhydric alcohols, which contain aliphatic diols such as ethylene glycol, propylene glycol, 1,3-propandiol, 2,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, neopentylglycol, diethylene glycol, dipropyleneglycol, 2,2,4-trimethyl-1,3-pentanediol, polyethylene glycol, polypropylene glycol and polytetramethylene; trioli and tetraol, such as trimethylated, trimethylolpropane, glycerin and pentaerythritol; alicyclic polyhydric alcohols such as 1,4-cyclohexanediol, 1,4-cyclohexanedimethanol, spiropyran, bisphenol, hydrogenated bisphenol, tricyclodecane diol and tricyclodecane dimethanol; and aromatic polyhydric alcohols, such as paraxylene glycol, metaxylene glycol, oroxylin glycol and 1,4-phenylene glycol. In addition, as part of the polyhydric alcohols in combination can be used monohydroxy alcohol.

Brednikova molecular weight complex of the polyester for use in accordance with the present invention mainly lies in the range from 1000 to 50,000, and preferably in the range from 2000 to 20000. When Brednikova molecular weight complex of the polyester is less than 000, deteriorates the resistance to ethanol film of printing ink. When this weight is more than 50,000, may occur the phenomenon of retraction of the ink, which may adversely affect the discharge of paint, or you may experience other problems. Both cases are undesirable.

As the acrylic resins may be used resins, which are obtained by copolymerization with a commonly used radical polymerized monomers. As examples of the radical curable monomers can lead esters of acrylic acid such as methyl acrylate, acrylate, isopropylacetate, n-butyl acrylate and 2-ethylhexyl acrylate; esters of methacrylic acid such as methyl methacrylate, ethyl methacrylate, isopropylacetate, n-butyl methacrylate, isobutyl methacrylate, t-butyl methacrylate, cyclohexyl methacrylate and 2-ethylhexyl methacrylate; aromatic vinyls such as styrene, vinyl toluene and methyl styrene; vinyl esters such as vinyl acetate and vinyl propionate; heterocyclic vinyl compounds such as vinyl pyrrolidone; vinyl halides, such as the vinyl chloride, vinylidene chloride and vinylidene fluoride; vinyl esters, such as ethyl vinyl ether and isobutyl vinyl ether; olefins such as ethylene and propylene.

An alternative can also be used curable monomers, sod is readie functional group, such as acid or base. As examples containing functional group monomers, one can cite: containing a carboxyl group, monomers such as acrylic acid, methacrylic acid, maleic acid, fumaric acid, taconova acid, mono n-butyl maleate, mono-n-butyl fumarate, mono-n-butyl itaconate and crotonic acid; containing hydroxyl group of the esters of (meth)acrylic acid such as 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 3-hydroxypropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, (2-hydroxymethyl) ethyl acrylate, (2-hydroxymethyl) butyl acrylate, (4-hydroxymethyl cyclohexyl) methyl (meth)acrylate, glycerol mono(meth)acrylate, 2-(meth) acryloyloxy 2-hydroxypropyl phthalate, and 2-hydroxy-3-phenoxypropan (meth)acrylate; containing amide group monomers such as acrylamide, methacrylamide, amide maleic acid and diacetone acrylamide; containing glycidyloxy group monomers such as glycidyl methacrylate and allyl glycidylether; containing langroup monomers, such as Acrylonitrile and met Acrylonitrile; dieny such as butadiene and isoprene; containing a hydroxyl group, allyl compounds such as allyl alcohol and 2-hydroxyethyl allyl ether; containing tertiary amino monomers, such as dimethylamino ethyl methacrylate, diethylamino ethyl meta is relat; containing CNS group monomers, such as vinyl, trimethoxysilane, vinyl triethoxysilane, vinyl triisopropoxide, vinyl Tris(p-methoxyethoxy) silane, vinyl metaldimension, vinyl metildigoxin, vinyl dimethylethoxysilane, vinyl dimethylethoxysilane, 3-methacryloxypropyl trimethoxysilane, 3-methacryloxypropyl triethoxysilane, 3-methacryloxypropyl dimethoxysilane and 3-methacryloxypropyl detoxified. An alternative can also be used monomers having two or more unsaturated bonds in the molecule, such as diallyl phthalate, divinylbenzene, allyl acrylate and trimethylolpropane trimethacrylate. These monomers can be used alone or they can also be used in combination with two or more other monomers.

As vinylchloride, it can be used in a variety vinylchloride, examples of which can lead copolymerizable polymers of vinyl chloride and other monomers, such as vinyl acetate, vinylidene chloride, acrylic acid and maleic acid. The preferred vinyl chloride is copolymerizable polymer is a vinyl chloride/ vinyl acetate, obtained by copolymerization of vinyl chloride and vinyl acetate. Especially preferred is copolymerizable polymer with a molecular weight of 30,000 or less is the more.

Without limitation can be used and other polymers that are not listed here above, as well as any polymers that are used in the known paint compositions. As examples of such polymers are: amino polymers, such as epoxy resin, phenol-aldehyde resin, novolak (phenol-formaldehyde Novolac resin), a modified rosin phenol-formaldehyde polymer, melamine, benzoguanamine, polyamide; cellulose ethers, such as cellulose diacetate, cellulose triacetate, nitrocellulose, cellulose nitrate, propionate, cellulose acetate butyrate cellulose, and cellulose ethers such as methyl cellulose, ethyl cellulose, benzyl cellulose, trityl cellulose, cyan ethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose and amino ethyl cellulose.

These polymers can be used in combination. However, to improve adhesion with the substrate when printing anhydrous composition, ink for inkjet printing in accordance with the present invention should preferably contain any complex polyester, acrylic resin and vinyl chloride as a polymer.

The content of the polymer for use in the anhydrous compositions of inks for inkjet printing in accordance with the present invention is preferably from 1 to 20 wt.%, and preferably from 1 to 10 wt.%. the hen polymer content is less than 1 wt.%, adverse reduces the adhesion to the base material. When the content of polymer is more than 20 wt.%, the viscosity of the paint composition increases, which adversely increases the instability of the discharge of paint. Thus, both cases are not preferred.

In the anhydrous compositions of inks for inkjet printing in accordance with the present invention using a dispersant of the pigment, in order to improve the dispersibility of the pigment.

As a pigment dispersant may be used polymers of the type polyamide containing hydroxyl group of the esters of carboxylic acid, salt polyamino amide with a long chain ester of the acid with a high molecular weight, salts of polycarboxylic acids with high molecular weight, salt polyamino amide with long chain ether polar acids, esters of unsaturated acids with high molecular weight, modified polyurethane, a modified polyacrylate, anionic activator type polyester, formalin condensate salt naphtalenesulfonic acid formalin condensate salt of aromatic sulfonic acids, esters of polyoxyethylene alkylphosphoric acid, polyoxyethylene nonylphenyl ether, stearyl amine acetate, etc.

In the anhydrous compositions of inks for inkjet printing in accordance with this izobreteny the m as a dispersant of the pigment, mainly used polyester polyamide, containing two amide groups or more per molecule and having srednecenovogo molecular weight of from 700 to 15,000. The amount of added dispersant of the pigment varies depending on the type of pigment used. However, this amount in the composition of the paint usually is preferably from 0.1 to 15 wt.%, and preferably from 0.5 to 10 wt.%, to improve the dispersion of pigment.

Polyester polyamide produced by reaction with each other a complete acid complex polyester and polyamino compounds having two or more amino molecule. As examples of the polyester polyamide can lead Solsperse 32000, Solsperse 32500, Solsperse 32600, Solsperse 33500, Solsperse 34750, Solsperse 35100, Solsperse 37500, etc. manufactured by Lubrisol Corp. and BYK9077, etc. manufactured by BYK-Chemie Japan KK.

In this connection it should be stated that when the number of amide groups in the molecule of the polyester polyamide is less than 2, it does not provide optimum dispersion of the pigment. In the case when Brednikova molecular weight is less than 700, the dispersibility of the pigment is reduced. When Brednikova molecular weight exceeds 15000, dispersion paint is reduced. Thus, both cases are not preferred.

In the anhydrous compositions of inks for inkjet printing in accordance with this izobreteny the m using an organic solvent, similar to the solvent used for the known paint.

As examples of organic solvents include alcohols such as methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, tridesilon alcohol, cyclohexyloxy alcohol and 2-methylcyclohexylamine alcohol; glycols such as ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, DIPROPYLENE glycol and glycerin; glycol ethers, such as onomatology ether of ethylene glycol, monotropy ether of ethylene glycol, monobutyl ether of ethylene glycol, diethyl ether of ethylene glycol, dimethyl ether of ethylene glycol, onomatology ether of diethylene glycol, monotropy ether of diethylene glycol, monobutyl ether of diethylene glycol ethyl methyl ether diethylene glycol, dimethyl ether of diethylene glycol, diethyl ether of diethylene glycol, disutility ether of diethylene glycol, onomatology ether of propylene glycol, monotropy ether of propylene glycol, monobutyl ether of propylene glycol, onomatology broadcast dipropyleneglycol, monotropy broadcast dipropyleneglycol, dimethyl ether of propylene glycol, dimethyl ether of dipropyleneglycol, diethyl ether of propylene glycol, diethyl ether of dipropyleneglycol, onomatology acetate of ethylene glycol, monotropy acetate of ethylene glycol, MES is butyl acetate, ethylene glycol, onomatology acetate diethylene glycol, onomatology ether acetate of ethylene glycol, monotropy ether acetate of ethylene glycol, monobutyl ether acetate of ethylene glycol, onomatology ether acetate propylene glycol, monotropy ether acetate propylene glycol, monotropy acetate diethylene glycol, monobutyl acetate of diethylene glycol and monobutyl ether of triethylene glycol; esters such as ethyl acetate, isopropyl acetate, n-butyl acetate, mutilated, ethyllactate and butylacetate; ketones, such as acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, isophorone and datetoday alcohol; and, in addition, toluene, xylene, acetonitrile, γ-butyrolactone, γ-valerolactone etc. of these solvents choose various solvents that are consistent with the characteristics of the printhead nozzles, with the reliability and characteristics of drying. If necessary, may be used a mixture of several solvents.

Anhydrous composition, ink for inkjet printing in accordance with the present invention mainly contains glycol ethers as organic solvents, of which ethyl methyl ether of diethylene glycol, diethyl ether of diethylene glycol, disutility ether of diethylene glycol, onomatology broadcast dipropyleneglycol, dimethyl ether of dipropyleneglycol, onomatology ether acetate propylene is likely, monotropy ether acetate diethylene glycol and monobutyl ether acetate diethylene glycol are preferred because of their excellent characteristics printing.

Anhydrous composition, ink for inkjet printing in accordance with the present invention contains contains the amino alcohol and, therefore, does not cause clogging of nozzles of the printhead device for inkjet printing, which results in excellent print quality of the printed material.

With regard to containing the amino alcohols, mention should be made of 2-amino-1-butanol, 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propandiol, 2-amino-2-ethyl-1,3-propandiol, Tris(hydroxymethyl)amino methane, etc. However, particularly preferred are 2-amino-2-ethyl-1,3-propandiol or 2-amino-2-methyl-1,3-propandiol because of their excellent characteristics printing.

With regard to containing the amino alcohols there may be used a variety of suitable compounds. It is necessary that the composition of the ink, the content of these compounds ranged from 0.01 to 3 wt.%, but mainly from 0.1 to 2 wt.%.

When the content containing the amino alcohol is less than 0.01 wt.%, can occur clogging of the nozzle. When the specified content exceeds 3 wt.%, then there is the problem of thickening of the paint due to the aggregation of the pigment. Thus, both cases are not flauta preferred.

The content containing the amino alcohol is preferably from 0.01 to 5 wt.%, and preferably from 0.1 to 2 wt.% on 100 wt.% organic solvent. When the specified content is less than 0.01 wt.% on 100 wt.% the organic solvent may cause nozzle clogging and corrosion of the head. When the specified content exceeds 5 wt.%, may occur adverse thickening of the paint due to the aggregation of the pigment and reduce the resistance to ethanol film of printing ink. Thus, both cases are not preferred.

For aqueous extract of the anhydrous composition of the ink for inkjet printing in accordance with the present invention the pH is preferably from 6.0 to 10.0, in order when printing there was no clogging of the nozzle and so that you can get printed material with excellent print quality. When the pH of the water extract is less than 6.0, it may corrode the printhead. When the pH is greater than 10.0 may occur adverse salustiana paint due to the aggregation of the pigment. Thus, both cases are not preferable. The pH value of an aqueous extract is preferably from 6.5 to 8.5.

To obtain the aqueous extract of the composition of the ink composition of the ink is added to distillirovanna the Yu water at the rate of 1 g per 100 g and mix well. After settling in a short period of time is measured pH of the water extract using a pH meter.

Moreover, the pH of an aqueous extract of the composition of the ink can be adjusted in the range from 6.0 to 10.0 due to the fine throttling containing the amino alcohol to be added to the paint composition.

Anhydrous composition, ink for inkjet printing in accordance with the present invention mainly comprises a pigment, a polymer dispersant of the pigment, organic solvent and containing the amino alcohol. However, depending on the type of use, in combination can be used additives such as a surface modifier, UV absorbers, stabilizer light radiation, an antioxidant and a plasticizer.

Anhydrous composition, ink for inkjet printing in accordance with the present invention can be used in various devices for inkjet printing. As examples of such devices inkjet printing it is possible to avoid the ejection of the composition of the paint through the regulatory process charge and due process of inking on request.

Anhydrous composition, ink for inkjet printing in accordance with the present invention also can mainly be used for printing using the device is as inkjet printing big size, for example for external devices such as display device information. In addition, it can be used with color graphics print or print video images, as it allows to provide a clear contrast and excellent image quality.

The print side (the side applying the paint composition) after inkjet printing is dried at ordinary temperatures, comprising several hundred degrees Celsius, which leads to the formation of a dry film of paint. In this regard, it is necessary to specify what to print in accordance with the present invention without limitation can be used any suitable base material, provided that it is not deformed and does not change its nature when drying conditions side printing (hand application of paint composition). As examples of such materials basis can lead to metal, glass, plastic, paper coated with a polymer on the surface of the plastic sheet and film, as well as external devices such as display device information.

Examples

Hereinafter the present invention will be described in more detail with reference to Examples and Comparative Examples. In the description share and "%" are given as weight percent.

Examples 1-5 and Comparative Examples 1-5

The Table shows the mixture that contain components are mixed in predetermined amounts (part the second by mass). These mixtures were prepared by mixing for 3 hours using a sand mill, resulted in the composition of the paints of Examples 1-5 and Comparative Examples 1-5.

As for the used pigments, carbon black is a Monarch 1000 (manufactured by Cabot Corporation); chinagreen purple represents PASTOGEN Super Magenta RG (manufactured by Dai Nippon Ink and Chemicals, Inc.); phthalocyanine blue is a Irgalite Blue 8700 (manufactured by Ciba Speciality Chemicals); and Nickel complex is a E4GN-GT (manufactured by LANXESS K.K.). As for polymers, complex polyester is a VYLON GK810 (manufactured by TOYOBO Co., Ltd., Brednikova molecular weight = 6000, the glass transition temperature Tg = 46°C, acid number = 5 mg KOH/ g, hydroxyl number = 19 mg KOH/ g); acrylic resin is a DYANAL MB 2660 (manufactured by MITSUBISHI RAYON CO., LTD., average molecular weight = 65000, Tg=52°C, acid number = 3 mg KOH/ g); vinyl chloride is a SOLBIN CL (manufactured by Nissin Chemical Industry Co., Ltd, a copolymer of vinyl chloride and vinyl acetate, Brednikova molecular weight = 25000, Tg = 70°C). As for the dispersant of the pigment, polyester, polyamide And represents Solsperse 32000 (manufactured by Lubrisol Corp., the concentration of solids 100% and Brednikova molecular weight = 1500), and Palia the Il polyamide represents a BYK9077 (manufactured by BYK-Chemie Japan KK., the concentration of solids 99% and Brednikova molecular weight = 1400).

For the respective paint compositions of Examples 1-5 and Comparative Examples 1-5 viscosity, particle size, pH of water extract, the stability of the discharge nozzle, the stability of the dispersion and resistance to ethanol were measured using the following methods and was their evaluation using the following criteria.

The viscosity measurement

The viscosity of the paint composition was measured at 20°C. using a viscometer of the type directly after preparation of the composition of the paints

Measurement of particle diameter

To measure the particle size of each paint composition was measured average diameter (D50) of the particles of the composition of the ink immediately after its preparation, using the device of a laser diffraction type for measuring the distribution of particle sizes (device, "SALD-7000"manufactured by SHIMADZU CORPORATION).

the pH of an aqueous extract

The pH value of aqueous extract of each paint composition was measured at 20°C using a pH meter by adding dropwise 1 g of the composition of the dye in 100 g of distilled water using a separating funnel, and then made a thorough mixing of the mixture and settling in a short period of time and then separated aqueous extract (part of the lower layer).

Stability is ity dispersion

Each paint composition was kept at 60°C for one month in a sealed container, and then was selected for measurements. Viscosity and particle diameter was measured as stated above. Assessment of relevant changes between the initial condition and the condition after storage for one month was carried out on the basis of the following criteria:

©: Changes in viscosity and particle diameter are within ±5%.

ο: At least change the viscosity and/or diameter of the particles exceeds ±5% within ±10%.

X: At least change the viscosity and/or diameter of the particles exceeds ±10%.

The stability of the discharge nozzle

Produced print images continuously for 8 hours, using the device for inkjet printing large format. Then stopped printing for 1 week under conditions of ambient temperature 40°C and humidity of 65%, after which he again made the print continuously for one hour. Evaluation of print quality produced visually on the basis of the following criteria:

a: 80% or more dots print properly printed in predetermined positions

Δ: more than 20% and less than 80% of the dots print undergo a shift,

X: 80% or more dots print undergo a shift.

Resistance to ethanol

The inkjet greater of armata produced print image on a white sheet of vinyl chloride, and then made drying. After that, the surface with the printed image is rubbed with a cloth soaked in 50 wt.% aqueous solution of ethanol (ethyl alcohol), and visually assessed the quality of the surface on the basis of the following criteria:

©: There are no changes.

a: the Paint is partially peeled off and the print looks pale.

X: the Paint peeled off and visible basis.

The measurement results and evaluation results are shown in Table.

The song paintsExampleComparative example
1234512345
PigmentCarbon black4444
Chinagreen Magenta33
Phthalocyanine blue44
Nickel complex33
PolymerComplex polyester88888 8
Acrylic resin88
The vinyl chloride88
Organic solventEthyl methyl ether of diethylene glycol50807665355076776536
Diethyl ether of diethylene glycol34205030 2150
Glycol-onomatology ether of DIPROPYLENE5555
γ-butyrolactone1111
Isophorone55
Containing the amino alcohol2-amino-2-ethyl-1,3-propandiol111 50.005
2-amino-2-methyl-1,3-propandiol15
2-amino-2-methyl-1-propanol10.001
Dispersant pigmentPolyester polyamide And22222222
Polyester polyamide2 2
Properties of the inkViscosity (mPa·s, 20°)4.64.54.74.84.44.94.84.74.84.4
Particle diameter D50 (nm)85901251451108590125145110
the pH of an aqueous extract (20°C)7.17.57.16.97.710.910.54.93.95.3
The stability of the discharge nozzleXXXXX
The stability of the dispersion©©©XX©
Resistance to ethanol©©©©©XX©©©

As shown in the Table, the composition of the paint in accordance with Examples 1-5 of the present invention provide a favorable evaluation results of the respective samples, which suggests that the composition of the inks are suitable for printing.

On the other hand, the composition of the inks according to Comparative Examples 1-4, in which use containing the amino alcohol is not matched with the existing present invention, cause clogging of the nozzle and result in deterioration in print quality. In addition, the composition of the paint in accordance with Comparative Example 5, which is used containing the amino alcohol also causes clogging of the nozzle and leads to defective printing.

1. The anhydrous composition of the ink for ink-jet printing, which comprises a pigment, a polymer dispersant of the pigment, organic solvent and containing the amino alcohol, wherein the content containing the amino alcohol is from 0.01 to 3 wt.% in terms of total weight,
where contains the amino alcohol selected from the group consisting of 2-amino-1-butanol, 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propane diol, 2-amino-2-ethyl-1,3-propane diol and Tris(hydroxymethyl)aminomethane, and
the content of the polymer is from 1 to 20 wt.% in terms of total weight.

2. Anhydrous composition, ink for inkjet printing according to claim 1, characterized in that the pH of an aqueous extract of the composition is from 6.0 to 10.0.

3. Anhydrous composition, ink for inkjet printing according to claim 1 or 2, characterized in that it contains the amino alcohol is 2-amino-2-ethyl-1,3-propandiol or 2-amino-2-methyl-1,3-propandiol.

4. Anhydrous composition, ink for inkjet printing according to claim 1, characterized in that the organic solvent contains glycol ethers.

5. Waterless to the position of the ink for inkjet printing according to claim 1, characterized in that the content containing the amino alcohol is from 0.01 to 5 wt.% on 100 wt.% organic solvent.

6. Anhydrous composition, ink for inkjet printing according to claim 1, wherein the pigment dispersant is a polyester polyamide containing two amide groups or more per molecule and having srednecenovogo molecular weight of from 700 to 1500.

7. Anhydrous composition, ink for inkjet printing according to claim 1, wherein the polymer is selected from the group which consists of a complex polyester, acrylic resin and vinyl chloride.



 

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Liquid hardening // 2447114

FIELD: chemistry.

SUBSTANCE: invention relates to curing agents for air-drying alkyd-based resins, coating compositions, such as paint, varnish, wood stain, inks and linoleum floor coverings. Described is a curable liquid medium containing a) from 1 to 90 wt % of an alkyd-based resin and b) from 0.0001 to 0.1 wt % of a siccative in form of an iron or manganese complex with a tetradentate, pentadentate or hexadentate nitrogen donor ligand.

EFFECT: said siccative has high activity and enables hardening of compositions at relatively low concentration in a curable liquid medium.

19 cl, 8 tbl, 5 ex

FIELD: printing industry.

SUBSTANCE: proposed ink composition for inkjet printing includes a polyurethane material having an average molecular weight of from about 50000 to about 500000, in an effective amount of from about 0.2 wt % to about 5 wt %. The composition also includes a solvent in an effective amount of from about 5 wt % to about 20 wt %, and an anionic surfactant in an effective amount of from about 0.01 wt % to about 3 wt %. Also a method of creation of this ink composition and an ink jet printing system, comprising a substrate and the indicated ink composition is provided.

EFFECT: proposed ink composition for ink jet printing provides improved readiness for publication in an open state.

6 cl, 3 tbl, 13 ex

FIELD: chemistry.

SUBSTANCE: method involves cathodic electrodeposition from a water-base lacquer composition containing 60-70% solution in a mixture of ethylglycoacetate and butanol epoxyamino-rubber adduct modified with malamine-formaldehyde resin K-421-02, an organic acid and distilled water, and hardening the coating. The lacquer composition additionally contains 75-85% solution in toluene bis(dicresoxy-phosphine-oxy)dibutoxy titanium, with the following ratio of components in wt %: 60-70% solution in a mixture of ethylglycol acetate and butanol epoxyamino-rubber adduct, modified with melamine-formaldehyde resin K-421-02 - 1.6-11.0; 75-85% solution in toluene bis(dicresoxy-phosphine-oxy)dibutoxy titanium 0.008-1.1; organic acid 0.008-1.1; distilled water - the rest. Electrodeposition is carried out at voltage 60-200 V for 3-60 s.

EFFECT: designing a method of obtaining coatings mainly on arrow-shaped bullets, having high corrosion resistance in NaCl solution and enabling complete sealing of cartridges with anaerobic sealants.

3 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: described is an activator of adhesion of ink to a substrate, containing a product of reaction of (a) a polymer solution or synthetic resin, (b) sulphonic acid or derivative thereof and (c) a metal compound selected from a group consisting of a metal halide, metal alkoxide, metal halide-alkoxide or a condensed metal alkoxide, where the metal is titanium or zirconium. The amount of sulphonic acid or sulphonic acid salt (b) and metal compound (c) corresponds to molar ratio of SO3X, where X is a H atom or a base residue, to Ti and Zr atoms ranging from 0.25:1 to 2:1. The invention also describes printing ink containing said adhesion activator.

EFFECT: reduced yellowing and smell of ink compared to ink which contains titanium acetyl acetonate as an adhesion activator while preserving effectiveness of the adhesion activator.

22 cl, 4 tbl, 15 ex

FIELD: chemistry.

SUBSTANCE: described is an activator of adhesion of ink to a substrate, containing a product of reaction of (a) a polymer solution or synthetic resin, (b) sulphonic acid or derivative thereof and (c) a metal compound selected from a group consisting of a metal halide, metal alkoxide, metal halide-alkoxide or a condensed metal alkoxide, where the metal is titanium or zirconium. The amount of sulphonic acid or sulphonic acid salt (b) and metal compound (c) corresponds to molar ratio of SO3X, where X is a H atom or a base residue, to Ti and Zr atoms ranging from 0.25:1 to 2:1. The invention also describes printing ink containing said adhesion activator.

EFFECT: reduced yellowing and smell of ink compared to ink which contains titanium acetyl acetonate as an adhesion activator while preserving effectiveness of the adhesion activator.

22 cl, 4 tbl, 15 ex

FIELD: technological processes.

SUBSTANCE: material marking method consists in the fact that there made is paint consisting of binding agent and fine microparticles and/or microencapsulated microdrops having diameter of approximately 40 to 80 mcm. Then, the mark having surface area of about one square centimetre and containing serial registration number is printed on the product by using the above paint. The above mark is lit with the light and chaotic character of distribution, shape and sizes of fine microparticles and/or microencapsulated microdrops are fully flashed; due to which non-reproducible and distinctive background card for the introduced mark is created. And data reads composed of the above background card are subject to filtration by using stop-down lens serving for neutralisation and suppression of any possible reflection of distortion of and damage to patterns, and then the above data reads subject to filtration are identified by means of optic-digital video camera interrelated with software, and view finder. At that, video camera has the possibility of transmitting the data to registration database for further comparison and confirmation of authenticity of the product marked in such a manner.

EFFECT: marking method allows high degree of protection of the product against false fabrication and copying.

10 cl, 2 dwg, 1 ex

FIELD: chemistry.

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

FIELD: printing industry.

SUBSTANCE: ink that contains water, water-insoluble colour and multiple water-soluble organic dissolvents is applied onto a carrier. Specified dissolvents contain a good solvent for the specified colour (A) and a poor solvent for the specified colour (B) with the ratio of A to B, equal from 10:5 to 7:9. The water-soluble organic dissolvent that has maximum value Ka, identified by Bristow method, among all water-soluble organic dissolvents in the ink, relates to poor dissolvents.

EFFECT: high extent of surface coating and high density of OD image even with small quantity of ink.

3 cl, 16 dwg, 11 tbl, 16 ex

Thermal printing // 2465146

FIELD: printing.

SUBSTANCE: invention relates to thermal printing and relates to a device and method of thermal printing an image from the intermediate sheet for thermal transfer to the product. The device comprises a heating means made with the ability to feed the flow of heated gas for dye transfer. Also, the device comprises a unit of oscillating blades to direct the heated gas in a direction transverse to the flow direction for distribution of heated gas on the product during the dye transfer.

EFFECT: invention provides uniform heating of the product and the sheet due to oscillating air distribution, which generally improves thermal printing.

14 cl, 6 dwg, 4 tbl, 2 ex

FIELD: printing industry.

SUBSTANCE: invention relates to a method of manufacturing a protection property for the protective element, counterfeit-proof paper or data medium. The method of manufacturing a protection property for the protective element comprising a substrate which has at least one through hole and at least one marking in accurate register with this hole. The substrate, at least in the area of the manufactured marking is equipped with a marking substance modifiable by laser. During the same technological operation by exposure of laser radiation at high laser power at least one through hole is made in the substrate. By exposure of laser radiation at lower laser power at the marking area the marking substance is modified and thus at least one marking is created in accurate register with the through hole.

EFFECT: proposed protection property enhances the counterfeit protection level of the protective element.

23 cl, 5 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to appliances intended for marking metal articles for verifying legality of their production. Coded message is produced on metal article surface by laser local heating source. Note here that prints consisting of nanostructures of oxides of metal elements to be red by aforesaid reader. Coding is performed in binary system based on availability (1) or absence (0) of aforesaid print. Information is coded by compiling private tables on the basis of IBM coding. Note here that generation of coded message is controlled by computer proceeding from pre-calculated parameters of effects. Said parameters are calculated by adduced laws.

EFFECT: larger volume of stored data during entire life under extreme operating conditions.

5 cl, 2 tbl

Pigment composition // 2461595

FIELD: chemistry.

SUBSTANCE: water-based pigment composition contains polyalkylene glycol, having average molecular weight Mw from approximately 5000 to approximately 75000, and inorganic pigment particles containing colloidal particles based on silicon oxide or silicate or aggregates thereof. The amount of polyalkylene glycol ranges from 50 to 100 wt % with respect to the total amount of organic material in the composition, and the weight ratio of said colloidal particles to the organic material ranges from 1:3 to 30:1.

EFFECT: invention also relates to a method of producing said composition, use thereof to coat paper or cardboard, a method of obtaining coated paper or cardboard.

25 cl, 2 tbl, 4 ex

FIELD: metallurgy.

SUBSTANCE: preliminary construction of calibration curve of dependence of etching depth of specimen surface of the specified metal or its alloy on parameters of incident laser radiation to surface is performed at monotonic increase in specific power of laser radiation from value of 0.1 J/cm2·s to the value at which molten drops are formed on etched surface. Then, spatial control of laser beam scanning on surface of metal or its alloy is performed at least as per one coordinate. Simultaneously with translational movement of laser beam there performed is its rotation with radius R. Radius R and angular rotation speed of laser beam is chosen considering the cut width and radius of laser beam.

EFFECT: improvement of the method.

5 cl, 3 dwg, 1 ex

FIELD: printing.

SUBSTANCE: invention relates to printing, namely, the means used for thermal applying of alphanumeric symbols or images on the surface of various products. Film for thermal transfer printing is a composite material formed of a set of layers, the first of which is the main-bearing, the second is separating, the third is coloring, and the layers have respective melting points, determined by the technology of film application. At the same time in one of the layers or simultaneously in several layers there is at least a portion of material which is uniformly distributed or distributed to individual sites, and having the ability to function as an optical marker in the range of ultraviolet, infrared, or X-rays radiation.

EFFECT: proposed new film for thermal transfer printing enables to identify both the film and the products on which it is applied, as well as to provide a high degree of protection against counterfeit production.

5 cl, 6 dwg, 3 ex

FIELD: printing.

SUBSTANCE: invention discloses an intermediate sheet for re-transfer, a method of printing an image on the product using an intermediate sheet for re-transfer, and a product that carries the image printed in this way. Intermediate sheet for re-transfer is designed to take the print image on the product by repeated thermal transfer, and the sheet includes a substrate. The coating taking the image on one side of the substrate is designed to take an image by printing using the dye containing colorant. And the coating comprises a layer absorbing the fluid and a colorant-controlling layer placed on it comprising functionalised polyvinyl alcohol.

EFFECT: invention provides obtaining images with better resolution and density.

20 cl, 1 dwg, 4 ex

FIELD: printing.

SUBSTANCE: invention discloses an intermediate sheet for re-transfer, a method of printing an image on the product using an intermediate sheet for re-transfer, and a product that carries the image printed in this way. Intermediate sheet for re-transfer is designed to take the print image on the product by repeated thermal transfer, and the sheet includes a substrate. The coating taking the image on one side of the substrate is designed to take an image by printing using the dye containing colorant. And the coating comprises a layer absorbing the fluid and a colorant-controlling layer placed on it comprising functionalised polyvinyl alcohol.

EFFECT: invention provides obtaining images with better resolution and density.

20 cl, 1 dwg, 4 ex

FIELD: chemistry.

SUBSTANCE: disclosed is a colour developing composition for recording materials, which is a reaction composition containing a mixture of compounds of formula (III) obtained from reaction of a dihydroxy diphenyl sulphone derivative of formula (I) with a dihalide of formula (ll), X-Y-X (II), where in the composition, at least 10 wt. % of the compound with n=1 is a crystalline material when content of the compound with n=1 in said reaction composition ranges from 5 to 80 wt. % of the total dry residue of the composition.

EFFECT: disclosed colour developing composition increases heat resistance.

9 cl, 8 dwg, 4 tbl, 14 ex

FIELD: instrument making.

SUBSTANCE: device for automated verification of authenticity of banknotes, securities and documents containing an authenticity mark in the form of diamond nanocrystals with NV-centres, including a source of optical radiation with a wave length in the range of 500-600 nm,a source of electromagnet microwave radiation, and a photodetector that records radiation in the range of 650-750 nm. The device additionally comprises a source of optical radiation with a wave length in the range of 500-600 nm. One of the specified sources of optical radiation is designed for the first probing of the specified mark jointly with the specified source of the electromagnetic microwave radiation. The other of the specified sources of optical radiation - for the second probing of the specified mark in absence of the microwave radiation. The device additionally comprises another photodetector device so that one of the specified photodetector devices is designed to record mark fluorescence during its first specified probing, and the other from the specified photodetector devices - to record fluorescence of the mark during its second specified probing. The device additionally comprises optical systems to direct the specified optical radiation with the wave length in the range of 500-600 nm in the points of the first and second specified probing in the place on the inspected object corresponding to location of the authenticity mark.

EFFECT: proposed device ensures higher quality of automated authenticity verification.

10 cl, 2 dwg, 1ex

FIELD: printing.

SUBSTANCE: invention relates to a substrate for the print head and the print device on the print head of which the substrate is placed. The substrate comprises: a set of printing elements arranged in a predetermined direction, the first logic circuit 104 located in accordance with the relevant groups each of which is designed for a specific number of adjacent printing elements, and made with the ability to choose the printing element for actuation of the printing elements that belong to each group; an actuation circuit 106 made with the ability of actuation the printing elements based on the signals output from the first logic circuit 104; the second logic circuit 105 made with the ability to supply from outside of input the printing data to the first logic circuits 104 corresponding to the respective groups; and means of storage the charges 108 located in the respective groups, connected with bus of power supply to provide power to at least one of the first logic circuits 104, the second logic circuits 105 and the actuation circuits 106 and made with the ability to store the charges in accordance with the voltage applied through the bus of power supply.

EFFECT: opportunity of effective suppression of the voltage fluctuation is provided due to the voltage drop between the ground bus and the bus of power supply of the second logic circuits or the drive circuits.

6 cl, 14 dwg

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