The method of producing inks for printing on paper

 

(57) Abstract:

The invention can find application in the printing industry and is intended to receive paint, mainly metallographic. Describes how to obtain inks for printing on paper by dispersing a mixture consisting of a pigment, an inorganic filler, a binder in the form of a solution of polymer resin in mineral oil and special additives using a drying agent, characterized in that the filler used chalk or calcium carbonate, and optionally, barium sulphate, the product of the dispersion is subjected to filtration and further deaeration on three roll with the subsequent introduction of micronized polyethylene wax, a mixture in a vacuum mixer for 10-15 min with simultaneous (automatic) adjustment by the color obtained with the paste, the introduction of drying and re-color correction obtained monocracy. The method allows to obtain a printing ink of almost all colors and shades with predetermined colorimetric properties, improve process performance and reduce its energy costs. 4 C.p. f-crystals, 1 table.

The invention relates to the field paloemeu for printing on paper.

A method of obtaining ink for high and offset printing on paper by dispersing pigment in a mixture with part of the binder (about 40%), representing a solution of the resin in mineral oil, to the degree of dispersion, component of 5-10 μm on the "wedge", with the subsequent introduction of the mixture of inorganic salts, such as barium sulfate, and hydroxide of a metal, a continuation of the dispersion, adding the rest of the binder, followed by stirring the paste for 10-15 minutes, filtering it through a sieve with the hole number 4800-5200 resp./cm2(SU 891732 A).

The disadvantage of this method is significant otmerivanie svezheotvarennogo imprint.

Also known is a method of obtaining metallographic inks for printing on paper by dispersion of pigment and medium - chalk in the resin solution in an aromatic hydrocarbon (US 3468829A).

The disadvantage of this method is also a significant otmerivanie svezheotvarennogo imprint.

Use in the process of dispersion of an alkyd resin in a significant amount of mineral oil and hydrocarbon resin in mineral oil with TKip240-320oC when mass sootnosyaschey 1200-1300 P, representing pentaerythritol ester of fatty acids of tall oil, modified isophthalic acid, or a mixture of glycerin ester of fatty acids of tall oil modified with isophthalic acid at a mass ratio of 40: 70-30:60, and mineral oils with aniline point (A. T.) 60-65oC, linseed oil and paraffin oil solvent with TKip260-290oC allows you to increase the durability of the fixing print on paper (optical density trace otmerivanija a layer thickness of 2 μm through 15 is 0.45 to 0.5.ed., 120 - 0-0,06.ed. (SU 896050 A).

However, the known method does not provide sufficient stability of the ink, which does not allow to use monocracy yellow, blue and red to get a wide range of colors and shades in process printing.

The stability of the paint increases 1.5-2 times due to the use of alkyd-amino resin based on isophthalic acid, pentaerythritol, sunflower oil and polyethylenepolyamines with mass ratio 2:1:8: 0,6-1,2 respectively with a viscosity of 180 to 250 cSt (mineral spirit at 25oC) and the amine number 80-120, and mineral oil with A. so 60-100oC and ve the p265-310oC containing 2-15% of unsaturated hydrocarbons (SU 1599409 A1). Its preparation is the dispersion of a mixture of pigments with a binder in the mineral oil and then adding the desiccant.

The disadvantages of this method are the complexity of the technology, much of its energy and the inability to control the thickness of the paint layer.

The closest to the essence of the proposed method is a method for the production of printing inks for high and offset printing by dispersing a mixture consisting of a pigment, a filler, a binder in the form of a solid solution of the resin in mineral oil with A. so 50-65oC containing unbranched and often weakly branched aromatic and polycyclic hydrocarbons, paste Naftogaz as protivoukachiwauschee means, composed of a mixture of aluminum stearate and paraffin in transformer oil and special additives and synthetic fatty alcohols fraction C10-C13, drying agent to achieve the necessary degree of dispersion and the desired colorimetric properties and then diluting solvent, packing in containers and getting mixed ink with more than 700 shades (SU 1708821 A1).

the intensity and purity of tone color, the corresponding set of color characteristics, as well as significant energy consumption for production.

The present invention is to develop a method of producing printing inks, providing the ability to control the thickness of the ink layer on the paper given intensity and purity of color tone coloring on the stamp and the reduction of energy consumption on production.

According to the present invention proposes a method of obtaining ink by dispersing a mixture consisting of pigment, filler is chalk or calcium carbonate and additives - barium sulphate, of a binder in the form of a solution of synthetic resin in mineral oil and special additives, followed by filtration of the product dispersion, deaeration on a three-roll machine, the introduction of micronized polyethylene wax, a mixture in a vacuum mixer for 10-15 minutes while adjusting the color obtained with this paste, the introduction of drying and re-color correction obtained monocracy.

As a pigment used organic pigments: pigment yellow transparent "About", pigment red 5, pigment blue phtalocyanine-foreline, chimney soot P-234 with a specific surface area of 105 m2/g (TU 38-415-104-79).

As the polymer resin used in phenol-formaldehyde resin, a modified rosin, phthalic resin, preferably, Pentapeptide alkyd resin, modified fatty acids of tall oil (VC-1), ester of fatty acids from oxidation of paraffin wax and higher fatty alcohols, or a mixture of it with the resin, selected from the group consisting of alkyd, maleinate or methylcyclohexanecarboxylic resin with a melting point of not lower than 110oC but SU 289112 A: alkeneamine resin based on isophthalic acid, pentaerythritol, sunflower oil and polyethylenepolyamine with a viscosity of 180 to 250 cSt in white-spirit in the 25oC (SU 1599409 A1); polycondensate phthalic anhydride and PENTAERYTHRITE modified linseed (alkyd resin D-1600, M-53) or sunflower oil (D-4100); a resin with a viscosity 1200-1300 P representing pentaerythritol ester of fatty acids of tall oil, modified isophthalic acid, or a mixture with glycerin ester of fatty acids of tall oil modified with isophthalic acid at a mass ratio of 40:70-30:60 (SU 896050 A).

It is advisable that a binder on the basis of the above the actual oil use oil for printing inks MP-1, spun oil, engine oil IP-40A, industrial oil IP-40A.

As oil solvent use petroleum solvent with a boiling point 190-240oC or 280-320oC, preferably oil solvent RPK-280, kerosene fraction with TKip220-270oC.

As a desiccant, it is advisable to use a mixed manganese-cobalt drier with a density of 1.8-2.0 g/cm3when the mass ratio of Co:Mn - 2:6.

In the mixture to dispersion, it is advisable to enter protivoukachiwauschee tool, which is used as a paste against otmerivanija based on Aerosil, paste 12 on the basis of Aerosil with a viscosity of 200-450 P and a density of 0.9-1.0 g/cm3, Montan-wax.

In printing ink use micronized polyethylene wax on THE 6-05-1516-77.

On the basis of the obtained monocratic yellow, red and blue, and, if necessary, green and black color make the program compile mixed ink of a given color, for input into the computer with subsequent automatic dosage in the bowl of a specified number of monocracy and target additive mixture in a vacuum mixer for 10-15 min with simultaneous autogo on the mixer).

The following examples explain but not limit the present invention

An example of a receipt printing inks are presented in the table.

On the basis of the received monocratic can be obtained by compounding mixing printing inks almost all colors and shades.

The proposed method is compared with the known allows to obtain a printing ink of almost all colors and shades with predetermined colorimetric properties, improve process performance and reduce its energy costs.

1. The method of producing inks for printing on paper by dispersing a mixture consisting of a pigment, an inorganic filler, a binder in the form of a solution of polymer resin in mineral oil and special additives using a drying agent, characterized in that the filler used chalk or calcium carbonate, and optionally, barium sulphate, the product of the dispersion is subjected to filtration and further deaeration on three roll with the subsequent introduction of micronized polyethylene wax, a mixture in a vacuum mixer for 10 to 15 min with simultaneous adjustment of the color obtained with the paste, the introduction of desiccant and popcorn is gment use pigment yellow transparent About, pigment red 5, pigment blue phtalocyanine-shape, pigment green phtalocyanines.

3. The method according to PP.1 and 2, characterized in that additionally use an oven black with a specific surface area of 105 m2/,

4. The method according to PP.1 to 3, characterized in that the binder used polymer resin in mineral oil with a boiling point of 180 - 210oC, a viscosity of 180 - 240 P and a density of 0.9 - 1.0 g/cm3.

5. The method according to PP.1 to 4, characterized in that the mixture to dispersion as the target of the additive injected protivokomarinaya pasta on the basis of Aerosil with a viscosity of 200 to 450 CPS and a density of 0.9 - 1.0 g/cm3.

 

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FIELD: polymer materials.

SUBSTANCE: polyurethane resin is a product of reaction of at least one diisocyanate component and isocyanate-reactive components having first group of at least one polyol, second group of at least one polyol, and third group of at least one polyol, at least one amine, and, additionally, reaction-stopping agent, all polyols of the first group having average molecular mass between 1000 and 10000 g/mole, those of second group having average molecular mass between above 10000 and 20000 g/mole, and those of third group having average molecular mass equal to or higher than 800 g/mole. Ratio of diisocyanate component to isocyanate-reactive components is selected such that all isocyanate groups are present as products of reaction with isocyanate-reactive functional groups. Resin is used as film-forming binder in coating compositions, in particular in printing inks for printing on polyolefin substrates. Printing ink is preferably used for manufacturing printed layered articles.

EFFECT: increased gluing ability and heat resistance of ink laid on plastic substrate.

41 cl, 2 tbl, 12 ex

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