Pigment-based non-aqueous dyes for jet printing

FIELD: printing industry.

SUBSTANCE: dye composition for jet recording is proposed, containing a ground pigment, a surfactant and a system of non-aqueous dissolvents. The system of non-aqueous dissolvents includes 1) from around 50 wt % to around 95 wt % of the main system of co-solvents, selected from a group of ethers of propylene glycol, acetates of glycol ether, ketones and esters, having surface tension of less than 32 dyne/cm (32x10-5 N/cm) at 25°C; 2) from around 1 wt % to around 30 wt % of the second system of co-solvents selected from a group of n-ethyl pyrrolidone, propylene carbonate, N-methyl pyrrolidone, methyl ester of lactic acid, 1,3-butanediol and glyceryl acetate, having surface tension of more than 32 dyne/cm (32x10-5 N/cm) at 25°C; 3) from around 1 wt % to around 10 wt % gamma-butyrolacton; 4) at least 2 wt % of resin dissolved in the dye composition. Also a group of dyes is proposed, containing the specified dye composition, as well as a method of images printing.

EFFECT: higher speed of dye drying, its stability to fading and improved spreading of a raster dot.

13 cl, 7 tbl, 7 ex

 

Prerequisites to the creation of inventions

In the printing industry with inkjet printing using the recording liquids of different types, such as paint, oil-based paints on the basis of co-solvent (non-aqueous), water based paint and solid paint (which melted in the preparation of the issue). Based paint co-solvent tend to more rapid drying than other paints, and as a result widely used for industrial printing. When based paint co-solvent containing the resin and other ingredients, spray on a substrate, the co-solvent (cosolvent) partially or completely evaporates from the paint, leaving the resin and other ingredients, as, for example, the pigment particles on the printed substrate in the form of a dry film.

The formulation of paint is often a balance of desired properties. For example, a more viscous paints and even paint with larger surface tension tend to show a slightly better performance characteristics, such as resistance to fading and stains. However, the same paints also tend to have undesirable effects in the form of a longer drying time and the tendency to clogging of the device with the print head, thus preventing the process of printing the project and lead to other adverse events, for example, poor dot gain dot, poor regulation of dot, a reduced switching frequency of the printhead, etc. the formulation of paints usually require the sacrifice of some properties in order to obtain or improve other properties. Thus, it would be useful to create a non-aqueous dye-based co-solvent, which shows superior quality paints, including faster drying, increased the switching frequency of the printhead, the best resistance to fading and staining and improved dot gain dot.

A detailed description of the preferred variant (variants) of the invention

Now reference is made to exemplary embodiments of the invention, and to describe them here will be used a special language. However, it will be clear that in this case there is no limitation of the scope of the invention. Changes and additional modifications shown here are the distinguishing features of the invention, as well as additional use cases shown here the essence of the invention that come to mind are the specialist in the relevant field of technology owning this description should be considered as being within the scope of the present invention. In the description and the formula is altoadige of the invention will use the following terminology in accordance with the following definitions.

The only forms of "one" and "the" include plural references unless the context clearly dictates otherwise. Thus, for example, reference to "pigment" typically includes one or more of such materials.

The term "solvent-based" when referring to the paint according to the present invention denotes a non-aqueous inks, which include at least one organic co-solvent (other than water).

Used herein, the term "system" to refer to a "system of co-solvents" means that in this system there are one or more co-solvents. For example, the main system of co-solvents may include only organic co-solvent or numerous organic cosolvent in the case when one or more co-solvents present in the ink at 50 wt.% or more. The co-solvents, which are part of the "main system co-solvents"are each a surface tension of 32 Dyne/cm (32×10-5N/cm). In the same way "the second system of co-solvents may include only organic co-solvent or numerous organic cosolvent in the case when one or more co-solvents present in the ink at 30 wt.% or less. The co-solvents, which are frequently the Yu "second system of co-solvents", have a surface tension of at least 32 Dyne/cm (32×10-5N/cm). It should be noted that the main cosolvent system and the second system co-solvents are part of a more General system non-aqueous co-solvents".

Used herein, the term "about" is used to provide flexibility endpoint numerical interval by ensuring that this value may be slightly higher or slightly lower endpoints. The flexibility of this term may be dictated by the specific variable and would be within the knowledge of professionals in the art to determine, based on the experience and its description.

Used here a lot of items, components and/or materials for convenience, can be represented in the General list. However, these lists must be interpreted as if each item in the list individually identified as a separate and distinct element. Thus, no single element of such a list should not be construed as de facto equivalent to any other member of the same list on the basis only of their representation in the General group in the absence of instructions in the reverse sense.

The numerical values, as, for example, attitude, concentration, quantity, size of molecules, etc. may be not only the us here in interval format. It should be understood that such a range format is used merely for convenience and brevity and should be flexibly interpreted to include not only the numerical values explicitly specified as an interval, but also include all the individual numerical values or potentially covered within this interval, as if explicitly set each numerical value and potential. For example, the weight range from about 1 wt.% to about 20 wt.% should be interpreted as including not only the explicitly specified limits of concentration of from about 1 wt.% to about 20 wt.%, but also include individual concentrations such as, for example, 2 wt.%, 3 wt.%, 4 wt.% and potentially, as, for example, from 5 wt.% up to 15 wt.%, from 10 wt.% up to 20 wt.% etc.

Aspects of the present invention is directed to compositions of paints and related methods. It should be noted that the compositions and methods according to the present invention share certain commonalities and characteristics. Some of these characteristics will be discussed in connection with the compositions, and the other of them will be described in connection with the methods. It should be noted that regardless of where discussed, each of the following descriptions in General relates to compositions and methods according to the present invention. Moreover, in the following detailed descriptions set forth the numerical concr the design and engineering details for to ensure a full understanding of the paint. However, as will be clear to experts in the field of technology, this paint can be used in practice without these specific details. In other cases not described in detail well-known methods, procedures, and composition so as not to obscure the nature of this paint.

According to variants of implementation of the present invention the composition of the ink for inkjet recording can contain powdered pigment, a surfactant, a system of non-aqueous co-solvents and at least 2 wt.% resin dissolved in the composition of the paint. The system is non-aqueous co-solvents may include from about 50 wt.% to about 95 wt.% the main system of co-solvents in which one co-solvent or each of a larger number of co-solvents has a surface tension of 32 Dyne/cm (32×10-5N/cm) at 25°C. the System is non-aqueous co-solvents may also include from about 1 wt.% to about 30 wt.% the second system of co-solvents in which one co-solvent or each of a larger number of co-solvents has a surface tension of more than 32 Dyne/cm (32×10-5N/cm) at 25°C, 36 Dyne/cm (36×10-5N/cm) at 25°C and even 38 Dyne/cm (38×10-5H/cm) at 25°C. in Addition, non-aqueous cosolvent system may include from about 1 wt.% until about the olo 10 wt.% gamma-butyrolactone. In addition to it can also be other co-solvents, for example, those that are not included in any of the above categories. The paint composition may be applied to inkjet printing, and, in addition, the second system of co-solvents may be able to change the overall surface tension of the composition to the paint in General. Alternatively or alternative gamma-butyrolactone and/or resin can also increase the surface tension of the composition to the paint in General. In another embodiment of the invention a method of printing images may include applying a jet of the above paint composition on a substrate.

Compositions and methods outlined thus, as it turned out, show the combination and range of desirable properties that previously were difficult to obtain with conventional inks for inkjet printing. Thanks to the introduction of co-solvent and gamma-butyrolactone improve the overall properties of the ink, including the performance of the paint and the final quality of the printed image compared to conventional non-aqueous inks. Specifically the song data paints provide increased switching frequency of the printhead, improved dot gain dot on substrates, faster drying, better regulation of droplet size, improved regulirovanie the halftone dots, improved the increasing size of the halftone dots, less fading of paint, less blurring colors, superior IQ and smaller grain size of the final product.

The relative amounts of different components of the ink for inkjet printing may vary. For example, the main system of co-solvents may be present in the ink for inkjet printing in the amount from about 50 wt.% to about 95 wt.%, from about 50 wt.% to about 90 wt.% or from about 70 wt.% to about 90 wt.%. The main system of co-solvents may be the only co-solvent or mixture of co-solvents, each having a surface tension of less than about 32 Dyne/cm (32×10-5N/cm) at 25°C. the Main system of co-solvents is not gamma-butyrolactone, and is not in any co-solvent of the second system of co-solvents, which must have a surface tension higher than the above-described surface tension. The second system of co-solvents may be the only co-solvent or mixture of co-solvents that may be present in amount from about 1 wt.% to about 30 wt.%, from about 2 wt.% to about 8 wt.% or from about 3 wt.% to about 6 wt.%. In addition, gamma-butyrolactone may be present in the composition in an amount of from about 1 wt.% up to about 10 wt.%, from about 2 wt.% to about 8 wt.% or from about 3 wt.% to about 6 wt.%. In addition to t the th, the pigment may be present in the paint composition in an amount of from about 0.1 wt.% to about 15 wt.% or, on the other hand, from about 0.5 wt.% up to about 10 wt.% or from about 0.5 wt.% to about 6 wt.%. Moreover, these intervals are associated with a total solid content of the pigment particles, regardless of whether this content to a single pigment or numerous pigments in the ink for inkjet printing. Further, the amount of resin which is dissolved in the ink for inkjet printing, may vary. One pitch or more of the resins may be part of the total content, which is dissolved in the paint. For example, in one embodiment of the invention the composition of the ink for inkjet printing includes at least 2 wt.% the dissolved resin or resins. On the other hand, the ink comprises at least 3 wt.% the dissolved resin or resins or even 4 wt.% the dissolved resin or resins. In one embodiment of the invention dissolved resin may be present in an amount of from 2 wt.% up to about 5 wt.%. In each of these embodiments of the invention does not require that all present resin (resin) was dissolved in the ink for inkjet printing, but typically, the resin may be at least substantially dissolved in the paint.

For additional details regarding defined the materials, which can be used in the inks according to the present invention, are described in more detail resins, co-solvents, pigments and surfactants.

The system is non-aqueous co-solvents

The system is non-aqueous co-solvents according to the present invention includes a mixture of at least three specific components: main system co-solvents, the second system of co-solvents and gamma-butyrolactone. It should be understood that all three components are three particular types of ingredients, such as gamma-butyrolactone is not able to act simultaneously as a second system of co-solvents. In addition, the resin may not act simultaneously as a second system of co-solvents. Non-restrictive examples of co-solvents are any non-aqueous cosolvent of ethers of glycols, which are acceptable for use as all the main system of co-solvents or part of it provided that the surface tension of co-solvent (cosolvent) is less than 32 Dyne/cm (32×10-5N/cm) at 25°C. non-restrictive examples of co-solvents ethers of glycols are monobutyl ether of ethylene glycol, onomatology broadcast tripropyleneglycol, methyl ether of propylene glycol, ethyl ether of propylene glycol, butyl ether of propylene glycol, onomatology broadcast dipropyleneglycol, ethyl ester of dipropyleneglycol, butyl ether of dipropyleneglycol, n-propyl ether, propylene glycol n-propyl ether dipropyleneglycol, n-propyl ester tripropyleneglycol, n-butyl ether propylene glycol n-butyl ether of dipropyleneglycol, n-butyl ether of tripropyleneglycol, dimethyl ether of dipropyleneglycol (Proqlyme). Additionally, there may be used esters and acetates, ethers of glycols, such as, for example, acetate monobutyl ether of ethylene glycol, butylglycol, acetate methyl ether of propylene glycol, ethyllactate, butylacetate, n-propyl-s-lactate and ethylhexyl-s-lactate, acetate methyl ester of dipropyleneglycol and propylene glycol diacetate. In addition, ketones, such as, for example, Diisobutylene may also be desirable for use. It should be noted that any single co-solvent or a combination of co-solvents in the case when each co-solvent has a surface tension of 32 Dyne/cm (32×10-5N/cm) at 25°C is believed to be the main system of co-solvents. It should also be noted that when the above-mentioned co-solvents can be modified to such an extent as to have a surface tension of more than 32 Dyne/cm (32×10-5N/cm) at 25°C, they can be classified as the second system of co-solvents, especially if they can oviet the surface tension of the ink, which are prepared in General accordance with the modalities for the implementation of the present invention.

The second system of co-solvents may, if required, to increase the overall surface tension of the composition to the paint in General. The co-solvent may be selected from any non-aqueous co-solvent with a surface tension of more than 32 Dyne/cm (32×10-5N/cm) at 25°C, 36 Dyne/cm (36×10-5N/cm) at 25°C or even 38 Dyne/cm (38×10-5N/cm) at 25°C. Some of the useful co-solvents for inclusion in the second system of co-solvents may have a surface tension of more than 40 Dyne/cm (40×10-5N/cm) at 25°C. In the number of non-restrictive examples of co-solvents for use in the second system of co-solvents include n-ethylpyrrolidin of 37.6 Dyne/cm (37,6×10-5N/cm), N-organic (up 40.7 Dyne/cm) (40,7×10-5H/cm) lactic acid (39 Dyne/cm) (39×10-5N/cm), methyl ester (39 Dyne/cm) (39×10-5N/cm), 1,3-butanediol (of 37.8 Dyne/cm) (37,8×10-5N/cm), propylene carbonate (41,4 Dyne/cm) (41,4×10-5N/cm), glycerinated (and 38.6 Dyne/cm) (38,6×10-5N/cm), 1,3-dimethyl-2-imidazolidinone (41 Dyne/cm) (C-5N/cm), 2-pyrrolidone (46,18 Dyne/cm) (46,18×10-5N/cm), 1-octyl-2-pyrrolidone (35 Dyne/cm) (35×10-5N/cm), cyclohexanone (34 Dyne/cm) (34×10-5N/cm).

In one embodiment of the invention the second system of co-solvents may be constituted in order to dispense the composition in the amount sufficient to increase the surface tension of the composition to the paint in General, the size of more than about 3 Dyne/cm (3×10-5N/cm).

The third component of the co-solvent is gamma-butyrolactone may be present in the composition of the paint and can, if required, to act also to improve the overall surface tension of the paint. Gamma-butyrolactone has a useful actions in relation to the dissolution of the pigment and, therefore, is a desirable component of a composition for inclusion in the final composition of the paint. However, you should limit the amount of gamma-butyrolactone, because at higher concentrations it tends to render the action of the alkaline type on the composition of the paint in General, as well as on the structure of the jet inks. As installed, when using more than about 10% gamma-butyrolactone he has too solvotrode effect on the overall composition of the paint and affects the performance of the individual components and paints in General. Considered this as gamma-butyrolactone gives certain benefits to the paint. For example, gamma-butyrolactone can act as a "cleaner" print nozzles. This co-solvent is very aggressive co-solvent that will dissolve many materials, providing - at least partially - this cleansing f is ncciu. In addition, gamma-butyrolactone is slowly evaporating co-solvent, which helps maintain the components of the paint dissolved during power nozzle and drying the ink on the substrate.

Resin

In the number of non-restrictive examples soluble in the solvent of resins that can be used in accordance with the modalities for the implementation of the present invention include acrylic resin, polyester resin, polyurethane resin, vinyl chloride resin and resin-based cellulose. In the number of non-restrictive examples of acrylic resins, commercially available from ROHM&HAAS, Filadelfia, Pennsylvania 19106, USA under the names of the acrylic resin Paraloid include the following resins: A-11, A-12, A-101, A-10S, A-646, B-60, B-64, B-66, B-T, H, B-72, B-82, A-21, A-21LV, B-44, B-44S, B-48N, B-48S, B-84, B-67, B-99N, XR-34, B-1225, DM-55, M-825, NAD-10V and F-10. Other soluble in the solvent of resins that can be used include copolymers of vinyl chloride and vinyl acetate with functional groups, e.g. carboxyl and/or hydroxyl groups, including esters, such as acetate esters. Some of these polymers are available on the market from WACKER GmbH, Burghausen, D-84489, Germany under the names of the resin Vinnol, namely E 15/45, H 15/45, H 14/36, N 15/42, H 15/50, H 11/59, H 40/43, H 40/50, N 40/55 and H 40/60. Other permissive use the AMI funktsionirovanii, soluble in the solvent of resins that can be used are commercially available resin from WACKER GmbH under the name E 15/45M, N 15/45M, E 15/40A, E 15/48A and E 22/48A. As described, it is desirable that the resin has been at least partially soluble, but usually at least substantially soluble in the composition of the paint in General. In one embodiment of the invention, the resin may act for fixing the pigment on the printed substrate or to give a printed ink resistance to weathering and chemical, and abrasion resistance.

Pigments

As also mentioned, the composition of paints include powdered pigments. In addition, there could be other pigments and/or dyes. According to the options of implementing the present invention, the pigment is ground so that they could have an appropriate particle size for the specific cases of application of the ink for inkjet printing. In one embodiment of the invention the pigment is ground with the main system of co-solvents (or, at least, one of its co-solvents) of the final composition of the ink for inkjet printing, it is possible, together with surface-active substances. The combination of co-solvent and surfactant provides benefits to the grinding process due to stabilizati the pigment, thus, forming the pigment with the best properties and the best grinding. In addition, it is believed that the presence of surfactants can reduce the required grinding time and, in addition, can contribute to the grinding process for the formation of pigments, more uniform particle size. As it is additionally assumed, surface-active substances present in the grinding process, can form a solution pigment (as pre-chopped, and are in the process of grinding), which is more conducive to efficient grinding, for example, applicable to a better dispersion of the pigment particles during grinding.

The composition of the paint can be any color. In certain embodiments of the invention the composition of the colors may be cyan, Magenta, yellow or black. On the other hand, the composition of the ink may be light blue, light purple, pink, green, orange, blue, red, purple, etc. Besides, the paint according to the present invention can be included in the group of colors. Such paints may include one color or many colors described here. The group paints could, for example, include blue composition of the paint, purple paint composition and a yellow composers who s paint compiled each in accordance with the present in the present composition.

In the number of non-restrictive examples of pigments that may be used in accordance with the modalities for the implementation of the present invention include yellow pigments with color indexes PY 83, PY 151, PN 150, PN 154. In addition, can be used as Magenta pigments, composed of a red pigment having a color indexes PR 202 PR 254 PR 122, and a violet pigment having the color indexes PV 19 PV 23 PV 29. Also applicable blue pigments having color indexes PB 15:3, 15:4, 15:2 and 15:1, and Hostafine Blue B2G, as well as black pigments having a color index PBL Black 7. Another pigment that can be used is Microlith 4G-WA. Examples of other pigments that may be used include the so-called "pigments for printing one additional ink, which are the pigments that have a different color than cyan, Magenta, yellow or black, and are difficult to reproduce the color mixer. In the concrete pigments for printing additional ink, which can be used include Cromophtal Orange GL (RO-64) or Microlith Green G-K (PG 7), both commercially available from Ciba Company, Basel CH-4002, Switzerland.

Surfactants

Surface-active agent (substance) can be anionic, ka is ion, non-ionic, Importeren, not containing silicon, fluorine-containing surface-active agent, polysiloxane, etc. In one variant of the invention, the surfactant may be a copolymer of a polyether and siloxane. Among the more specific examples of such materials include surfactants to improve wetting of the substrate, commercially available from Tego Chemie Service GmbH, 100 Goldschmidtstrasse, Essen D-45127 Germany under the names of the Wet ZFS 453, Glide 415, Glide 100, Glide 450 and Glide 410, and levelling substances under the names of the Glide A 115, Flow 300, Glide 420, Glide 406, Glide 411, Glide 435 and Glide 440.

In another embodiment the invention, the surfactant may include organically modified polyacrylates, such as those available on the market from EFKA Company, Heerenveen 8440'AN, the Netherlands, for example, EFKA-4340.

In yet another embodiment of the invention, the surfactant may contain one or more soluble or dispersible in the solvent component. In the number of non-restrictive examples of the surfactants may include high molecular weight copolymers with groups that have the means to pigments, including block copolymers. Other specific examples of surfactants that may be used include surface is Resto-active substances, available on the market from WOOK Chemie GmbH, mailbox 100245, Gozel D-46462, Germany under the names of Disperbyk-115, Disperbyk-160, Disperbyk-161, Disperbyk-162, Disperbyk-163, Disperbyk-164, Disperbyk-166, Disperbyk-167, Disperbyk-169, Disperbyk-182, Disperbyk-174, and Disperbyk-184.

In one embodiment of the invention surfactants can increase the flow of pigment during grinding, thereby increasing the efficiency of the grinding process. In addition, the added surfactant can facilitate the grinding process to obtain pigments having a particle size smaller and more homogeneous in size.

Other components and the printed substrate

In addition to the pigment (pigment), surface-active substances (surfactants) and system nonaqueous solvent composition may include other additives, such as wetting, dispersing agents, leveling agents, preservatives, antifoaming additives, pH regulators, disinfectants, deodorants, perfumes, antioxidants, charge regulators, absorbers of ultraviolet radiation, substances that prevent the formation, the amplifiers stability during storage, etc. regarding these supplements, they are usually present in small quantities. For example, a dispersant (dispersant), soluble or dispersible in the solvent, can the t be present in amounts of from 0.5 wt.% up to 5 wt.%. In General, these components may each be present in the paint composition in General in amounts of from 0.01 wt.% up to about 10 wt.%.

It should also be noted that the compositions of the inks prepared according to the modalities for the implementation of the present invention can be used for inkjet printing on a substrate-storage media or on a substrate of another type. According to variants of implementation of the present invention inks for inkjet printing may have good adhesive properties to adhere to a wide variety of substrates, including paper, coated paper, including photo paper and technical paper for offset printing, plastic, such as vinyl resins and polyvinyl chloride, glass and metals.

Examples

The following examples illustrate embodiments of the invention, which are best known at the present time. However, it should be understood that the following is only exemplary or illustrative description of the application entity of the present invention. Specialists in this field of technology can be invented numerous modifications and alternative compositions, methods and systems that are not beyond the scope of this invention and not deviating from its essence. As I believe, the attached claims cover such modifications and implementation. Still the way although the present invention has been described above in detail, the following examples are given for additional details in connection with what is believed at the present time, is the most practical and preferred options for implementation of the present invention. It should also be noted that in the following examples, all compositions of the inks prepared in a manner similar to that described in Example 1.

Example 1.Blue paint composition

Blue paint composition prepared in accordance with the following Table 1, adding Vinnol EI5/45 to acetate monobutyl ether of ethylene glycol (BEA) up until it will not dissolve in the BEA. Then add Pigment Blue 15:3 in the form of a powder and the whole composition is stirred until a homogeneous dispersion. The mixture is then milled until then, until you reach the desired particle size of from 100 to 300 nm. Pre-dissolved Vinnol EI5/45 and Disperbyk D-167 added to the crushed dispersion and stirred for 30 minutes. After that add the BEA to the dispersion and stirred for further 30 minutes. Then BEA and propylene-carbonate is added to the dispersion, which is stirred for about 30 minutes.

Table 1
Ingredients Wt.%
The BEA (acetate monobutyl ether of ethylene glycol)75-90
Propylene carbonate3-6
Gamma-butyrolactone3-6
Disperbyk D-1671-3
Vinnol E15/45 (vinyl chloride-vinyl acetate resin)3-6
Pigment Blue 15:33-5

Example 2. Purple paint composition

Purple paint composition prepared in accordance with the following Table 2 and in the manner the same as described in Example 1, using Pigment red 122 instead of the Pigment Blue 15:3 and EFKA 4340 instead of Disperbyk D-167. In this embodiment of the invention, EGKA 4340 added to the dispersion before the grinding process, and not after it.

Table 2
IngredientsWt.%
The BEA (acetate monobutyl ether of ethylene glycol)75-90
Propylene carbonate 3-6
Gamma-butyrolactone3-6
EFKA 4340 (modified polyacrylate)2-5
Vinnol E15/45 (vinyl chloride-vinyl acetate resin)2,5-4,5
Pigment Red 1224-6,5

Example 3. Yellow paint composition

Yellow paint composition prepared in accordance with the following Table 3 and in the manner the same as described in Example 1, using Pigment Yellow 129, and Pigment Yellow 150, instead of the Pigment Blue 15:3.

Table 3
IngredientsWt.%
The BEA (acetate monobutyl ether of ethylene glycol)75-90
Propylene carbonate3-6
Gamma-butyrolactone3-6
Disperbyk D-167 (surfactant)2-4
Vinnol E15/45 (vinyl chloride-vinyl acetate resin) 2,5-4,5
Pigment Yellow 1290.1 to 1.5
Pigment Yellow 1501-4

Example 4. Black paint composition

Black paint composition prepared in accordance with the following Table 4 and in the manner the same as described in Example 1, using Pigment Black 7 instead of the Pigment Blue 15:3.

Table 4
IngredientsWt.%
The BEA (acetate monobutyl ether of ethylene glycol)75-90
Propylene carbonate3-6
Gamma-butyrolactone3-6
Disperbyk D-167 (surfactant)1-3
Vinnol E15/45 (vinyl chloride-vinyl acetate resin)4-6
Pigment Black 7 (carbon black)2-6

Example 5. Light blue paint composition

Light blue paint composition prepared according the following Table 5 and in the manner the same as described in example 1, using Pigment Blue 15:3, entered into the paint at a lower concentration.

Table 5
IngredientsWt.%
The BEA (acetate monobutyl ether of ethylene glycol)75-90
Propylene carbonate3-6
Gamma-butyrolactone3-6
Disperbyk D-167 (surfactant)0.5 to 3
Vinnol E15/45 (vinyl chloride-vinyl acetate resin)3,5-6
Pigment blue 15:30.1 to 2

Example 6. Light purple paint composition

Light purple paint composition prepared in accordance with the following Table 6 and in the manner the same as described in Example 2.

Table 6
IngredientsWt.%
BEA acetate monobutyl ether of ethylene glycol) 75-90
Propylene carbonate3-6
Gamma-butyrolactone3-6
EFKA 4340 (surfactant)0.5 to 3
Vinnol E15/45 (vinyl chloride-vinyl acetate resin)3-6
Pigment Red 1220.5 to 3

Example 7. Light blue paint composition

Alternative light blue paint composition prepared in accordance with the following Table 7 and in the manner the same as described in Example 1, using Pigment Blue 15:3, introduced into the paint at lower concentrations, as well as numerous solvents present in the main system solvent and the second solvent system.

Table 7
IngredientsWt.%
The BEA (acetate monobutyl ether of ethylene glycol)35-45
The DPMA (acetate methyl ester of dipropyleneglycol) 35-45
Hexanon1,5-3
Propylene carbonate2-4
Gamma-butyrolactone3-6
Disperbyk D-167 (surfactant)0.5 to 3
Vinnol E15/45 (vinyl chloride-vinyl acetate resin)3,5-6
Pigment blue 15:30.1 to 2

Paints prepared in accordance with the foregoing examples, can be deposited on various substrates, such as paper, PVC, vinyl and other plastics. These paints provide superior the switching frequency of the printhead, improved dispersion of dot on all substrates, faster drying speed, improved regulation of raster points, improved to increase the size of the raster points, improved image quality, a smaller grain size of the final print. In addition, the second system of co-solvents in these examples, acts to increase the surface tension of the paint composition in General, and optionally gamma-butyrolactone and/or resin may as well also to increase the surface on which agenie compositions of colors these types depending on the initial surface tension of the ink without these components and quantities, added to the compositions of the inks. In addition, it should also be noted that in the above examples paint a second co-solvent includes propylene carbonate. However, as is clear, each of these colors can be modified for the inclusion of the other co-solvents according to the options of implementing the present invention. Moreover, many of the quantities of each component paints are similar to other examples. It should be noted that the amount of each component may vary. In addition, as understood in the ink composition may include other components, not listed above. In addition, as in Example 7, any of the inks in Examples 1-6 can be modified for the inclusion of the two or more co-solvents from one or both groups co-solvents, or, on the other hand, can also be used two or more resins, surfactants, etc. in Other words, examples of the dyes are only illustrative, and the selection of components and their amounts can be changed accordingly to achieve the desired results. Thus, although there have been illustrated and described, certain features of the invention, specialists in the art will now come to mind many modifications, substitutions, modifications and equivalent shall alenty. Therefore, it is necessary to understand that the accompanying claims, is considered to encompass all such modifications and changes are within the true parameters of the paint.

1. The composition of the ink for inkjet recording containing:
a) milled pigment;
b) a surfactant;
C) the system of non-aqueous solvents, including:
1) from about 50 wt.% to about 95 wt.% the main system of co-solvents comprising at least one co-solvent selected from the group consisting of ethers of propylene glycol, acetates of glycol ether, ketones and esters, with each main co-solvent system of the cosolvent has a surface tension of 32 Dyne/cm (32·10-5N/cm) at 25°C;
2) from about 1 wt.% to about 30 wt.% the second system of co-solvents comprising at least one co-solvent selected from the group consisting of n-ethylpyrrolidin, propylene carbonate, N-methylpyrrolidone, methyl ether complex of lactic acid, 1,3-butanediol and glycerinated, where every second co-solvent system of the cosolvent has a surface tension of more than 32 Dyne/cm (32·10-5N/cm) at 25°C;
3) from about 1 wt.% up to about 10 wt.% gamma-butyrolactone;
g) at least 2 wt.% resin dissolved in the composition of the ink, and the ink composition which is suitable for inkjet printing.

2. The paint composition according to claim 1, in which the second system of the cosolvent acts to increase the overall surface tension of the composition to the paint in General.

3. The paint composition according to claim 1, in which the second system of co-solvents present in the composition in amount from about 2 wt.% to about 8 wt.%.

4. The paint composition according to claim 1, in which the main system of co-solvents is the only co-solvent.

5. The paint composition according to claim 1, in which the second system of co-solvents is the only co-solvent.

6. The paint composition according to claim 1, in which each second co-solvent system of the cosolvent has a surface tension of more than 36 Dyne/cm (36·10-5N/cm) at 25°C.

7. The paint composition according to claim 1, in which gamma-butyrolactone is present in the composition in amount from about 2 wt.% to about 8 wt.%.

8. The paint composition according to claim 1, in which the resin is dissolved in the composition of the paint more than about 3 wt.% the composition of the paint as a whole.

9. The paint composition according to claim 1, in which the resin includes at least one element selected from the group consisting of acrylic resins, polyesters, polyurethanes, vinylchloride, vinyl chloride-vinyl acetate resins and resin-based pulp.

10. The group paints containing at least one paint composition according to one of claims 1 to 9.

11. G is the SCP paints, includes blue paint composition, Magenta composition of the paint and yellow paint composition composed each one of the claims 1 to 9.

12. The method of printing images containing ink-jet printing on a substrate-media paint composition according to one of claims 1 to 9.

13. The method according to item 12, wherein the substrate is an information carrier made of paper or plastic.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention describes a dustless powdered pigment composition which is essentially free from binder substances and contains: at least 60 wt % of at least one nacreous pigment, 1-15 wt % non-ionic monomeric wetting substance and/or polysiloxane-based non-ionic wetting substance and 1-39 wt % solvent or mixture of solvents, wherein the total amount of separate components equals 100 wt %. Said non-ionic wetting substance contains OH groups and has hydroxyl number from 30 to 150 mg KOH/g of wetting substance, preferably from 50 to 120 mg KOH/g of wetting substance. The invention also describes a method of preparing the pigment composition and use thereof.

EFFECT: use of disclosed dustless pigment composition in printing ink enables to obtain prints with high resistance to wet treatment.

16 cl, 1 tbl, 8 ex

FIELD: chemistry.

SUBSTANCE: invention relates to reactive metal-complex azo dyes, specifically to reactive dyes of formula where R1 is hydrogen, (R2)5 is a nitro group, X is chlorine, T is a radical of formula , ,

or

,

where (R3)0-2 -0, Z is a vinyl or -CH2-CH2-U, U is a group removable in an alkaline medium, Q - -CH(Hal)-CH2-Hal or -C(Hal)=-CH2, Hal is a halogen, s equals 0 or 1.

EFFECT: disclosed dyes have high resistance to wet processing, especially when dyeing or printing synthetic polyamide fibre materials.

7 cl, 12 ex

FIELD: chemistry.

SUBSTANCE: invention relates to compositions for marking substrates. The invention describes a composition for marking substrates, which contains 0.01-50 wt % colourant, 0.01-50 wt % metal salt and carboxylic acid, 1-80 wt % binder and 1-99 wt % organic solvent. Also described is a method of preparing the said composition, a substrate coated with the said composition and a method of marking substrates using the said compositions. The disclosed composition is based on using readily accessible carboxylic acid salts which can not be coloured before exposure to effects of energy.

EFFECT: composition enables to obtain semi-transparent or transparent coatings with high intensity and brightness.

9 cl, 14 ex

FIELD: printing.

SUBSTANCE: there is described composition of inks for jet printers including jet forming thinner, containing organic cosolvents, surfactant and buffer solution, the set of solid pigments samodispergirovannyh in this diluent, and a complex poluefir and styrene maleic anhydride (SMA), dispersed in this diluent. System for printing images on a substrate is also described, including the printing head, filled with inks able to form jet.

EFFECT: offered inks provides decrease in a time of drying at achievement of a sharp image and decrease in quantity of surfactants or wetting agent or their absence in inks on the basis of black pigment.

10 cl, 5 dwg, 3 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to liquids for holding aqueous ink on paper for jet printing. A liquid is described for holding water-based ink onto paper, containing a non-curling co-solvent in form of an inner salt, with a sp3-hybrid nitrogen cation and associated anionic charge, insulated on the oxygen anion, directly bonded to the sp3-hybrid nitrogen cation, or insulated between oxygen atoms of a carboxylate group, and is a compound which contains a group chosen from ammonium-N-oxide, N, N, N-trimethylglycinate and amino acid. Described also is use of the said liquid for holding ink on paper to prevent paper from curling during printing.

EFFECT: obtaining liquid for holding water-based ink onto paper, which efficiently reduces curling and deformation of printing paper.

14 cl, 9 tbl, 7 ex

FIELD: physics; image processing.

SUBSTANCE: present invention pertains to a protective element for counterfeit protected paper, valuable documents etc. as well as the counterfeit protected paper and valuable documents, method of making such a protective element, printing ink containing pigment with variable optical properties and method of making such printing ink. The protective element contains a thin-layer element with a colour tilt effect, consisting of a reflecting layer, absorbing layer and an intermediate layer between the reflecting layer and the absorbing layer. The intermediate layer is formed by the printing layer, containing dispersed particles with monomodal or oligomodal size distribution.

EFFECT: obtaining a simple protective element which can be made cheaply and which has high level of security from counterfeit.

62 cl, 12 dwg

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

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: 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: 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: printing industry.

SUBSTANCE: paper contains inner gluing agent in the form of alkenyl succinic acid anhydride in amount from approximately 1.0 pound per ton to approximately 4.0 pounds per ton and a metal salt. At the same time the paper is characterised with ability to bear printed dye, equal to or below 12%, and optical density of black colour, equal to or higher than approximately 1.5.

EFFECT: reduced time of printed dyes drying, and also improved clearness and optical density of printed text.

9 cl, 4 tbl, 2 ex

FIELD: physics, optics.

SUBSTANCE: device for transferring an image onto a wooden base has apparatus for receiving and/or creating an image. At least one source of a laser beam. Apparatus for moving the laser beam with rotation and/or translational movement of the laser beam relative the said wooden base or vice versa - for moving the wooden base relative the laser beam, as well as for focusing the laser beam onto the said base. At least one module for regulating radiation power of the laser beam. At least one module for controlling the said movement and focusing apparatus. Apparatus for converting information of the said image into an instruction for the said at least one regulation module and the said at least one control module. The said at least one regulation module regulates radiation power of the laser beam by directly changing pumping of the active substance and/or changing operation of the modulator located in the resonator of the source of the laser beam.

EFFECT: solution enables reproduction of images on a wooden base with an irregular shape with high accuracy and speed of processing, as well as high depth of transfer within the base.

22 cl, 2 dwg

FIELD: information technology.

SUBSTANCE: method involves probing availability of given marks through exposure to laser radiation with wavelength 510-540 nm and combined effect of laser radiation and microwave radiation, resonance splitting of the ground state of the NV-centre. The difference between fluorescence signals from said marks is measured. The authenticated object is moved in the control zone so that the point on the object which corresponds to dislocation of the authentication mark is exposed to the said laser radiation for a period of time. The positive effect is achieved due to, but not limited to, that the signal for measuring fluorescence intensity of said marks caused by modulation of the received resonance microwave radiation is obtained via synchronous detection with determination of the phase shift between said signal and said modulation signal, as well as due to that during synchronous detection, the constant of integration is considered approximately equal to the time the authentication mark is exposed to laser radiation when the authenticated object is moved through the authentication zone.

EFFECT: high degree of authenticating banknotes.

8 cl, 1 dwg, 1 ex

FIELD: printing industry.

SUBSTANCE: invention relates to the field of protection of bank notes, secured papers and documents and may be used to manufacture marks, containing active centres of nitrogen-vacancy in nanocrystals of diamond, to apply them in the form of substance on specified objects to verify authenticity of the latter. Substance of marks represents suspension containing nanocrystals of diamond with centres of nitrogen-vacancy (NV centres) and liquid carrier. Specified liquid carrier represents a dissolvent, for instance, propanol, which includes stabiliser substance preventing aggregation (sticking) of specified diamond nanocrystals, for instance, of 0.5-5.0 wt % of polyvinyl pyrrolidone. Diamond nanocrystals represent nanocrystals of natural and/or synthetic diamonds modified so that there is a concentration of specified NV centres in them in the range from 1017 to 1019 units in cm3, and at that concentration of nanocrystals in specified suspension makes 3-10·10-4 g/ml.

EFFECT: invention provides for increased extent of marks protection, and also higher accuracy of their verification authentication.

3 cl, 1 ex

FIELD: printing industry.

SUBSTANCE: material for jet printing is intended for printing in jet printers and plotters using water-(water-alcohol)-based ink. Material represents polyethylene terephthalate (PET) base (film), where adhesive and receiving layers are serially applied. Adhesive layer includes copolymer of vinyl acetate with vinyl chloride and polyvinyl pyrrolidone with the specified ratio of components. Receiving layer includes polyvinyl acetate, aluminium hydroxide and zinc oxide with the specified ratio of components.

EFFECT: improved water resistance of material and image produced on it and used for external application.

1 tbl, 9 ex

FIELD: printing industry.

SUBSTANCE: material for jet printing is intended for printing in jet printers and plotters using water-(water-alcohol)-based ink. Material represents polyethylene terephthalate (PET) base (film), where adhesive and receiving layers are serially applied. Adhesive layer includes copolymer of vinyl acetate with vinyl chloride and polyvinyl pyrrolidone with the specified ratio of components. Receiving layer includes polyvinyl acetate, aluminium hydroxide and zinc oxide with the specified ratio of components.

EFFECT: improved water resistance of material and image produced on it and used for external application.

1 tbl, 9 ex

FIELD: process engineering.

SUBSTANCE: invention relates to sealing of laser-made inscriptions on plastics. Proposed method features ability of preventing bleeding or fading of colouring agents and/or absorbers in plastics by sealing inscriptions made by laser thanks to using transparent polymer in making inscription or directly after it. Note that polymer is applied as a separate layer to seal colouring agents.

EFFECT: stable inscription with high contrast on edges and high resistance to ambient effects.

20 cl, 12 dwg, 13 ex

FIELD: process engineering.

SUBSTANCE: invention relates to sealing of laser-made inscriptions on plastics. Proposed method features ability of preventing bleeding or fading of colouring agents and/or absorbers in plastics by sealing inscriptions made by laser thanks to using transparent polymer in making inscription or directly after it. Note that polymer is applied as a separate layer to seal colouring agents.

EFFECT: stable inscription with high contrast on edges and high resistance to ambient effects.

20 cl, 12 dwg, 13 ex

FIELD: chemistry.

SUBSTANCE: substrate has a paper base containing cellulose fibre from deciduous wood with particle size smaller than 200 mcm after grinding in amount of not more than 45 wt % and average fibre length between 0.4 and 0.8 mm and filler in amount of 5-40 wt %, particularly 10-25 wt % in terms of the weight of cellulose.The substrate at least contains one polymer layer lying at least on one side of the paper base. There is a layer with a binding agent between the polymer layer and the paper base. The binding agent is a hydrophilic film-forming polymer made from hydroxypropylated starch and/or thermally modified starch. This layer may contain a pigment in form of calcium carbonate, kaolin, talc, titanium dioxide and/or barium sulphate.

EFFECT: reduced limpness and obtaining pure-bred production wastes.

27 cl, 3 tbl

FIELD: chemistry.

SUBSTANCE: substrate has a paper base containing cellulose fibre from deciduous wood with particle size smaller than 200 mcm after grinding in amount of not more than 45 wt % and average fibre length between 0.4 and 0.8 mm and filler in amount of 5-40 wt %, particularly 10-25 wt % in terms of the weight of cellulose.The substrate at least contains one polymer layer lying at least on one side of the paper base. There is a layer with a binding agent between the polymer layer and the paper base. The binding agent is a hydrophilic film-forming polymer made from hydroxypropylated starch and/or thermally modified starch. This layer may contain a pigment in form of calcium carbonate, kaolin, talc, titanium dioxide and/or barium sulphate.

EFFECT: reduced limpness and obtaining pure-bred production wastes.

27 cl, 3 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to ink systems for jet printing, containing a fixing composition with low corrosion activity. The invention discloses a fixing composition for jet printing, containing water or a mixture of water and at least one water-miscible organic solvent, and a polycationic fixing agent whose counterion is not a halogen, where the counterion is selected such that it reduces availability of the halogen in the fixing agent. The invention also discloses a method of applying an essentially noncorrosive ink composition and a jet system for providing ink with low corrosion activity.

EFFECT: invention reduces the negative effect of the fixing agent on components of the printing head while preserving all its useful properties.

10 cl, 2 dwg

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