Composition for screen printing
(57) Abstract:Use: manufacture of printed circuit boards, glass boards, indicators, marking panels. The inventive composition comprises, by wt.%: alkyd resin 25,0 - 27,0 (on dry matter), dibutyl phthalate and 1.0 - 3.0, Alcamo OS 2 - 0,1,0,3, white spirit and/or kerosene 10,0 - 18,0, monoalkyl ether glycol 0.1 to 0.3, triethanolammonium 1,0 - 5,0, barium sulfate else. The composition has a high resolution of topological drawing. table 1. The invention relates to printing inks, in particular to a protective inks screen printing, designed for the manufacture of printed circuit boards, glass boards, indicators, marking panels.Known protective paint screen printing for the manufacture of printed circuit boards (Shahverdyan B. N. Gagarinskaya L. A. Printing materials. M. Book, 1988, S. 211 217).The disadvantages of these paints is their poor adhesion to the glass surface of the Board, the selectivity to the morphology and purity of the Board surface, high defect in quality of the applied layer.The closest analogue-a prototype of the present invention is a paint composition comprising an alkyd resin, dibutil coomeva, ST3.12.X-51, T 29-02-740-87).The disadvantages of this paint are insufficient reproducibility of the printing properties associated with the instability of its thixotropic parameters, and shallow (up to 200 to 250 microns) resolution.In addition, when reducing the size of the topological elements of drawing and respectively mesh stencil you want to use a paint diluted with solvents. The process of applying this paint is difficult due to the instability of its structure and strong spreading. The latter circumstance makes it impossible to separate playback located with a minimum (about 100 to 150 microns) clearance items topological drawing.The objective of the invention is to improve the printing properties of the ink and as a consequence an increased resolution of topological drawing.The problem is solved in that in the known composition for screen printing, comprising alkyd resin based on phthalic anhydride and pentaerythritol, dibutyl phthalate, alkyl oxyethylenenitrilo the ammonium benzoylphenyl Alcamo OS-2, white spirit and/or kerosene, barium sulfate, added monoalkyl ether of polyethylene glycol of General formula
Dibutyl 1,0 3,0
Alcamo OS-2 0,1 0,3
White spirit and/or kerosene 10,0 18,0
Monoalkyl ether glycol 0,1 0,3
Triethanolamines 1,0 5,0
Barium sulfate Else
when the amount of alkyd resin to the solution.With the introduction of surface-active monoalkyl ether of polyethylene glycol slows down the evaporation rate of ink in its operation, reduces its stickiness to the stencil and thereby improving the manufacturability of the process as a whole. The specified property change colors associated with the distribution of macromolecules surface-active monoalkyl ether of polyethylene glycol on the surface of the paint, preventing diffusion of the solvent molecules from the volume Kramskoy.The introduction of a polar compound of triethanolaminato, such as triethanolaminato, causes the Association of the molecules of the foaming agent and as a consequence improves the thixotropy of the compositions as a whole. Due to the continuing thixotropy in the printing process significantly decreases the value of the effective flowing property of the paint, Thu is edlagaemoe technical solution to a problem is a new set of features in comparison with the known solutions of the problem, it is not obvious from the prior art and may be found to comply with the criterion of "inventive step". Part 1, wt.Alkyd resin 25,0
Alcamo OS-2 0,1
White spirit and/or kerosene fraction 10,0
Monoalkyl ether glycol 0,1
Part 2, wt.Alkyd resin 26,0
Alcamo OS-2 0,2
White spirit and/or kerosene fraction 14,0
Monoalkyl ether glycol 0,2
Part 3, wt.Alkyd resin 27,0
Alcamo OS-2 0,3
White spirit and/or kerosene fraction 18,0
Monoalkyl ether glycol 0,3
The best is the paint composition for screen printing at the following content, wt.Alkyd resin 26,0
Alcamo OS-2 0,2
White spirit and/or kerosene fraction 14,0
Monoalkyl ether glycol 0,2
Filling The Rest.The table is developed based paint is superior to known printing properties, largest adhesion and surface charge, stability, rheological characteristics.It allows you to get high-saturated thin PCB components in positive performance.Protective paint is applied through the stencil form on the surface of a glass Board, covered with a thin continuous layer of indium oxide or tin dioxide, or a mixture of indium and tin oxides) formed by vacuum deposition. Then hounded, dissolve unprotected areas of the layer of indium oxide in hydrochloric acid. After that, the protective paint is removed in alkaline solution. Remaining on the Board surface plots of oxide are given topological conductive structure.The paint is prepared on the basis of commercially available electroplating protective paint ST3.12-51 (TU 29-02-740-78). In 100 g of paint is added 8 10 g monoalkyl ether of ethylene glycol (00-20, GOST 19730) and 1.2 g of triethanolaminato. After a thorough mechanical mixing for 10 to 15 min the protective paint is ready for use. Composition for screen printing, comprising alkyd resin based on phthalic anhydride and pentaerythritol, dibutyl phthalate, alkyloxyaryl-metal is then further comprises monoalkyl ether of polyethylene glycol of General formula C18H34- (O-CH2-CH2)nIs HE, where n 15 30, and triethanolamines General formula
where m 14 17,
in the following ratio, wt.Alkyd resin (dry substance) 25 27
Dibutyl phthalate 1 3
Alcamo OS-2 0,1 0,3
White spirit and/or kerosene 10 18
Monoalkyl ether glycol 0,1 0,3
Triethanolammonium 1 5
Barium sulfate Ostalnoe
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
SUBSTANCE: invention relates typography dyes, in particular, to dye for deep printing. Invention describes dye for deep printing comprising the first binding agent chosen from group of water-soluble or water-diluted acrylate oligomers, photoinitiating agent and, optionally, a monomer as the second binding agent chosen from group consisting of water-soluble or water-diluted monomers of polyethylene diacrylates or polyethoxylated triacrylates used for correction of the composition dye viscosity value. Dye can comprise additives, such as pigments, filling agents, photosensitizing agents, photostabilizing agents and special pigments. Dyes shows viscosity value from 7 to 60 Pa . s at temperature 40°C and dispersed completely in aqueous washing off solution with sodium hydroxide in the concentration from 0 to 0.5 wt.-%. Dyes possesses the excellent capacity for paint removing and it is can be precipitated from the indicated washing off solution.
EFFECT: improved and valuable properties of dye.
28 cl, 9 ex
SUBSTANCE: invention relates to composition of aqueous dye used in stenciling, to a method for preparing indicated composition of stenciling, using indicated dying composition for stenciling and to securities printed using indicated dying composition. Invention describes composition of aqueous dye for stenciling containing the following components: (a) emulsion of acrylic or urethane-acrylic copolymer taken in the amount 30-70 wt-%, preferably in the amount 35-60 wt.-%, and more preferably in the amount 40-55 wt.-% of self-cross-linking emulsion of acrylic or urethane-acrylic copolymer as measured for the total mass of composition; (b) cross-linking agent taken in the amount 0.25-3 wt.-%, preferably in the amount 0.5-2 wt.-%, and more preferably in the amount 1-2 wt.-% of mass indicated cross-linking agent as measured for the total mass of composition; (c) optional catalyst; (d) optional pigments, and (e) optional additives and wherein indicated cross-linking agent comprises at least two different functional activity in a single molecule. The first functional activity is chosen by so manner to form a covalent bond with indicated polymer before printing and the second of indicated functional activities is chosen by so manner to carry out cross-linking indicated polymer for hardening printed dye. Emulsion of acrylic or urethane-acrylic copolymer is chosen from group possessing self-cross-linking property and wherein the composition shows pH from 7.0 to 8.5, preferably from 7.5 to 8.3 and more preferably from 7.5 to 8.0. Invention describes a method for preparing above said composition of aqueous dye for stenciling and comprising the following steps: (a) preparing emulsion of acrylic or urethane-acrylic copolymer; (b) optional preparing catalyst, optional pigments and optional additives; (c) preparing a cross-linking agent able to form a covalent bond under the first conditions with polymer prepared in (a), and cross-linking prepared polymer under the second conditions; (d) thorough mixing components prepared by points (a), (b) and (c) and providing interaction of polymer prepared by point (a) with a cross-linking agent prepared by point (c) under indicated first conditions; (e) regulation of pH value of the composition in the range from 7.0 to 8.5. Also, invention describes using the indicated composition of aqueous dye as a dye for stenciling and security document with signs printed by using indicated composition of aqueous dye. Proposed composition shows improved stability and improved toxicological properties in the combination and excellent stability of printed and hardened dye to chemical and physical effects.
EFFECT: improved properties of dye, improved preparing method.
14 cl, 6 ex
FIELD: light industry; composition of decorative coats for wallpaper; manufacture of pearly ink for intaglio printing on wallpaper.
SUBSTANCE: composition of proposed printing ink for wallpaper contains 16-16.5 mass-% of pearly pigment; 12-12.5 mass-% of ethyl alcohol; 46-46.4 mass-% of binder - acrylic latex of butyl acrylate copolymer (19-21%) and methacrylic acid (10-12%) and water; copolymer acrylic latex is produced by method of radiation emulsion polymerization of butyl acrylate, vinyl acetate and methacrylic acid under action of ionizing radiation at dose rate of 0.05-0.1 g/s to absorbed doses of 1.5-2 kgr.
EFFECT: avoidance of lamination of ink; easily washable ink; enhanced heat resistance of ink.
1 tbl, 2 ex
SUBSTANCE: invention pertains to polyurethane resin, which is a product of a reaction between at least one diisocyanate and components, containing functional groups, which have capacity to react with isocyanates, with the following composition: (a) first group, which is formed by one or more polyester-polyols based on ethers, each of which has average molecular mass ranging from 400 to 12000 g/mol, (b) second group, formed by one or more poly hydroxilated resins, chosen from a defined group of resins, (c) optional third group, formed by one or more polyols, each of which has average molecular mass, equal to or less than 800 g/mol, which are also chosen from a defined group of polyols, and (d) at least one amine and a reaction chain-stopping agent. The ratio of equivalent masses of diisocyanate and components, containing functional groups, with capacity to react with isocyanates, is chosen such that, naturally all isocyanate groups of diisocyanate are present as a product of the reaction with one of the above mentioned functional groups, with capacity to react with isocyanates. The invention also relates to the method of obtaining the above mentioned polyurethane resin, to polyurethane resin obtained through such methods, to coating for plastic substrates, containing the proposed resin, as a polyolefin binding substance, to use of such a polyurethane resin as a film forming substance in printing ink for printing on plastic substrates, as well as to the method of obtaining a laminate, which has a layer obtained when printing an image, including stages (a)-(d), with use of coating from polyurethane resin, and to a laminate, obtained using such a method.
EFFECT: obtaining a coating from polyurethane resin, with good heat resistance and excellent initial adhesiveness.
SUBSTANCE: water based flexographic contains biodegradable polyhydroxyalkanoate (PHA) consisting of monomers having the following formula: where n is an integer from 1 to 5, and R1 is selected from a group comprising hydrogen, alkyl from C1 to C20, and alkenyl from C1 to C20, and having molecular weight ranging from 500 to 5000000 g/mol, binder substance which is three-block amphiphilic compound having two hydrophobic terminal areas with linear and/or branched aliphatic chains CnH2n+2, n = 1-40, and one central hydrophilic area - polyethylene glycol and its derivatives; or having one central hydrophobic area with linear and/or branched aliphatic chains CnH2n+2, n = 1-40, and two hydrophilic terminal areas, a solvent, and a dye or pigment in amount sufficient for leaving a visible mark on a base. Concentration of PHA in the ink ranges from 20 to 80% (weight/volume), concentration of the binder ranges from 0.5 to 20% (weight/volume), concentration of the solvent ranges from 1 to 25% (weight/volume) and concentration of the dye or pigment ranges from 1 to 40% (weight/volume). Described also is a method of preparing water based flexographic ink and a printing composition which contains the said flexographic ink.
EFFECT: improved biodecomposition properties.
13 cl, 6 ex
FIELD: textiles and paper.
SUBSTANCE: non-woven fabric is proposed, on the visible surface of which the ink composition is applied comprising from about 40 wt % to about 80 wt % of the dry weight of the ink of linking agent - aziridine oligomer with at least two aziridine functional groups. Also an absorbing article is proposed comprising a liquid-permeable upper layer, an absorbing core and a liquid-impermeable lower layer that contains the specified non-woven fabric with the said applied ink composition. The application of ink on the non-woven fabric can be carried out by the method of flexography or a method of ink-jet printing.
EFFECT: printed non-woven fabric has high resistance to abrasion even in case of its contacting with fatty substance.
16 cl, 2 dwg, 2 tbl, 2 ex
SUBSTANCE: carrier based on high-density polymer is decorated with ink for printing, comprising at least one pigment and one binder. The binder is an oxygenised polyolefin wax in the form of an aqueous emulsion, and the wax has a Brookfield viscosity of less than 5000 mPa*s at 150°C and a pH level of 28 to 32 mg KOH/g, and the said ink has a viscosity of less than 2000 mPa*s at 25°C. The ink is applied in a continuous or discrete manner on at least one surface of the carrier. The subject of the invention is also a decorated carrier based on high-density polymer, a multi-layered product, and a method of manufacturing of a multi-layered product with a coating of the said ink.
EFFECT: creation of the ink of simpler composition and easier to use.
16 cl, 1 dwg, 4 tbl
SUBSTANCE: invention relates to polyamide-based printed films which are used as casings for food products, particularly artificial sausage casing. Disclosed is a printing ink system for printing on (co)polyamide-based films. Said system contains a radically curable primer ink and UV radiation radically curable printing ink which forms an almost colourless layer of primer ink. The primer ink contains a reactive compound which, in one molecule, contains a group capable of bonding with a (co)polyamide surface and an ethylenically unsaturated group which can undergo radical-initiated polyaddition. The invention also discloses a (co)polyamide-based single- or multilayer film which is printed with said printing ink system and a method for production thereof.
EFFECT: printing ink system enables to print on (co)polyamide-based food films with high adhesion to the film, resistance to friction, scratching even without an additional lacquer coat, mechanical and thermal processing, resistance to migration of ink components, which prevents foreign odours from food products.
27 cl, 1 ex
SUBSTANCE: invention relates to organometallic latent catalytic compounds which are suitable as catalysts in polyaddition or polycondensation reactions which are catalysed by a Lewis acid type catalyst, particularly for cross-linking a blocked or non-blocked isocyanate or an isothiocyanate component with a polyol or a polythiol to form polyurethane. Polyaddition or polycondensation reactions are initiated by that a catalyst is released while holding in electromagnetic radiation in wavelength range of 200-800 nm. The latent catalytic compound has formula I or II, Me(FG)(m-x)Ax (I); Ax(FG)(m-1-x)Me-O-Me(FG)(m-1-x)Ax (II), where Me is Sn, Bi, Al, Zr or Ti; m is an integer from 1 to the coordination number of Me; x is an integer from 0 to (m-1); A is a C1-C20 alkyl, halogen, C7-C30 aralkyl, C1-C20 alkoxy group, C2-C10 alkanoyloxy group, C6-C18 aryl or C6-C18 aryl, which is substituted with one or more C1-C20 alkyls; and under the condition that if x is greater than 1, A are identical or different; and FG independently represents a group of formula (Z), (B), (C), (D), (E), (F), (G), (L) or (M)
where values of radicals are given in the claim. The invention also relates to a polymerisable composition and a method for polymerisation in the presence of said catalytic compounds. The invention enables to initiate the reaction only if desired by external activation, such as heating or light.
EFFECT: widening the operating window with a polymer mixture until the chain reaction begins.
12 cl, 14 tbl, 67 ex