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Complete Hand Book on Manufacturing and Formulations of Thinners and Solvents with NC Thinner, Polish Thinner, Synthetic Thinner, Ethyl Alcohol based Thinner, White Spirit based Thinner, Naphtha based Thinner, Paint Thinner, MTO based Thinner, Enamel Paint Thinner, Acrylic Paint Thinner, Thinner for PU Paint and Allied Thinners with Packaging EB is powerful enough to eliminate the need for photoinitiators. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. In water based inks, two types of acrylic polymers are used: • Polymers in emulsion or dispersion, which improve the drying, gloss, adhesion and. The properties of flexographic inks obtained by the partial replacement of nitrocellulose (NC) resin with different amounts of polyurethane (PU) resins were evaluated for the statistical planning of mixtures to develop an optimum ink formulation. Other properties such as the viscosity ink, gloss, coating strength, color, adhesion, and blocking of the NC/PU‐based ink film did not vary significantly when compared to those of the standard ink produced exclusively with NC resin. Lubestine filler for use in paint and ink formulations. thickening agents for polyurethane coating system. With HDI-based formulations, both base and topcoat have the same isocyanate. Suitable Raw Ingredients Used in PU Coatings, Check Out the Latest Industry News on Polyurethane Coatings, The Chemistry of Polyurethane Coatings, Bayer, Thermoset coatings, F. Aguirre-Vargas, in Thermosets (Second Edition), 2018, Szycher's Handbook of Polyurethanes, First Edition, Polyurethanes: Science, Technology, Markets, and Trends By Mark F. Sonnenschein, Higher Efficiency, Less Sag for Sustainable Protective Coatings, Water-borne Binder for Durable Intumescent Coatings, Meet Oxiteno's Next Generation Coalescing Agent for High-performance Waterborne Paint, Be the first to comment on "Polyurethane Coatings: A Comprehensive Guide ", Your email address and name will not be published, submitting a comment or rating implies your acceptance to. The full text of this article hosted at iucr.org is unavailable due to technical difficulties. The formulations were developed using a statistical tool and they were found to present properties predicted by the tool. The newer grades are up to 40% more efficient than competitive associative thickeners, offering excellent cost saving potential ( Figure 1 ). Water dilutable formulation on paper (posters) They must also allow high speed printing and ensure excellent graphic quality. Example of a Basic Formulation: Ethanol 21 pbw Ethylacetate 21 pbw Plasticizer 2 pbw Pigment 30 pbw PU Resin 8 pbw NC Resin (35% a.i.) All just mentioned non-reactive systems have in common that isocyanates do not react during application. In principle, all types of printing inks contain similar components – but depending on print method the type of raw material and the quantity are different. Tirupati Inks Ltd. Aliphatic systems are utilized where non-yellowing is a must, which is the case among other for PVC floor tiles and continuous flooring. Non-isocyanate formulations encompass TPU-based lacquers, aqueous PU dispersions, urethane oils & alkyds, and radiation-cured polyurethanes. 1 Post Wednesday 14 July 2004 1:00:00 am. If you do not receive an email within 10 minutes, your email address may not be registered, 3.2. Maykon Cargnin, Universidade do Extremo Sul Catarinense—UNESC, Av. The more than 2500 trade and industrial paint and ink formulations is the first comprehensive database of its kind and will be an invaluable tool for all companies and personnel involved in paint and ink manufacture and use.Each formulation includes the raw materials used and their quantities, key paint or ink properties, film properties, trade names of components, … ink formulation a higher percentage of nitrocellulose and a reduced amount of polyurethane (plasticising), which could be substituted by a monomeric plasticizer. This family of coats represents roughly 5% of all urethane in paints. HDI and adducts are most commonly used, whilst H12MDI is ending up in water-borne systems. However, ink formulations with higher PU contents underwent higher photodegradation. There are various types of inks, among these water-based, solvent-based, UV as well as digital inks. Formulations. Starting Point Formulations Cardolite products deliver unique properties to solvent-free, solventborne and waterborne epoxy and polyurethane formulations for the coatings, adhesives, composites and polyurethane foam industries. In comparison with existing technologies on the market, the newer TAFIGEL® PU thickeners have been specially modified so that the interaction between binder and thickener is greatly improved. Binders are a crucial component of lamination printing inks. Please check your email for instructions on resetting your password. Polyurethane coatings based on aromatic diisocyanates tend to yellow in sunlight. Figure 4 gives the MEK resistance of formulations again after a 0 to 7 hour aging time of the formulation. UCECOAT ® 2800 series products are the premier waterborne UV resins for use in inkjet inks. Figure 3 gives the changes in gloss (60º) after aging the formulations from 0 to 7 hours before application. Ester links are synthesized during the reaction by polycondensation, and the isocyanate is added for reaction with the remaining hydroxyl groups to form urethane linkages. High-purity diacids such as adipic acid, and, Amine-tipped propylene oxide/ethylene oxide copolymers, and. In the last case is better to add a small quantity (1-2%) of ethylcellulose to avoid a likely yellowing of the product due to the high quantity of nitrocellulose. This includes powder coats, which consume over 10% of all urethane in paints. those formulated with oxidation-drying oil/resin boiling … They are attractive in products needing to be put back rapidly in service after painting or where post cure is impossible or too costly. PU based ink system makes the difference. When exposed to water, milk, and UV light, ink surfaces showed similar behavior in the atomic force microscope, Fourier‐transform infrared spectroscopy, and UV–vis analysis. Isocyanates - may be aromatic or aliphatic - all contain one active hydrogen and contain a blocking agent most of the time caprolactam. The hydrophobic isocyanate grades can be used as such or can be emulsified by partial reaction with a hydrophilic polyol. water resistance of inks. The particulate composition increases film integrity and strength. The results indicate that the substitution of the NC resin with PU resins leads to increased resistance of the ink film to delamination. More universal ink, for medium-duty lamination: Elastomeric PU ink. In this case, the reaction converts them to diglycerides and monoglycerides. US 2K Polyurethane Dispersion Exhibiting Enhanced Adhesion using HALOX® 550 WF Free Product Samples Click Here Worldwide Distribution Find Distributors Got a If you have any questions or need support, please contact our experts. Any queries (other than missing content) should be directed to the corresponding author for the article. Water is cheaper, less regulated and has no odor. This means that a PU paint may contain urethane, urea, allophanate and biuret linkages. These 2K paints contain dispersible isocyanates and polyols, such as polyacrylates or polyesters that are emulsifiable or soluble in water. Typical NC Typical NC- -PU Gravure Ink PU Gravure Ink Formulation Formulation Resin Pigment Additives Solvents Tirupati Inks Ltd. SONGWON – Long-standing expertise in printing ink technology for flexible packaging. Ink formulation. Are obtained by reacting MDI, HDI or TDI with polyether or polyester polyols that are linear branched with an isocyanate content below 20%. These hydroxyl-containing oils can then be reacted with isocyanates (TDI or IPDI) and thereby form long-chain hydroxyl-terminated polymers that can be dissolved in solvents. Universitária 1105, CEP 88806‐000 Criciúma, SC, Brazil. Benzophenone is a typical photoinitiator which produces free radicals when absorbing UV and then initiates the crosslinking through the acrylate groups. Good aesthetics like all other PU coatings. 0%=poor ink adhesion with 100% ink coming off from the substrate 100%=excellent ink adhesion with 0% ink coming off from the substrate . Polyurethane Dispersion (PUD) Formulations. The VESTOWAX® product range covers a series of synthetic waxes (polyethylene, Fischer-Tropsch, EVA copolymer and modified polypropylene waxes) with a broad spectrum of applications. Working off-campus? Block Resistance. Home > Forum > Optimized formulations > Nc-pu inks. Many resins can be used in the formulation of flexographic pri nting inks depending on the substrate, resins include nitrocellulose, soluble acryli c polymers, polyurethanes, alcohol–soluble grades of ethyl cellulose, cellulose acetate pr opionate (CAP), polyamides, poly(vinyl butyral) – whose use has grown to repl ace CAP - and other resinssuchasketoneresinsandPVC … Aliphatic isocyanates react more slowly and result into softer coatings than those made of aromatic isocyanates. On paper Raw materials Parts Ebecryl 605 50 Ebecryl 7100 10 TPGDA 16 PI 5 Aerosil 200 2 Pigment paste 20 . The outlets for polyureas are more diverse than for conventional PU spray coats because of their fast cure and specific characteristics. When exposed to water, milk, and UV light, ink surfaces showed similar behavior in the atomic force microscope, Fourier‐transform infrared spectroscopy, and UV–vis analysis. The properties of flexographic inks obtained by the partial replacement of nitrocellulose (NC) resin with different amounts of polyurethane (PU) resins were evaluated for the statistical planning of mixtures to develop an optimum ink formulation. different inks in the U.S. For printing onto foils made from polyolefins or similar polymers which are not readily wettable, suitable products from the vast range of possible printing inks include on the one hand those containing resins which can be used with relatively non-polar solvents, such as ones based on petroleum or hydrocarbons, e.g. Ideal Technical Requirements for Ideal Technical Requirements for G I k G I k Gravure Inks Gravure Inks Viscosity : 305 Sec # Ford Cup B4 y p Pigmentation( Organic ): 7-10% Pigmentation( In Organic ): 255 % Pigmentation( In Organic ): 255 % Flow: Newtonian G i di >5 Grinding: >5 m % Solids: 253 % Resin Part : 205 Tirupati Inks … Oven-curing PUs are similar materials to the 2K systems, except that a blocked isocyanate is used to provide a storage stable one-pack mix with the polyol or polyamine. Each resin type shown can be combined with others to increase the overall performance of the inks, for example - nitrocellulose is often combined with polyurethane or polyamide resins. This solvent free, two pack, polyurethane (PU) adhesive system can be used for food pouches, wet wipes and film applications, including vacuum packing, and more. 16 pbw Use the link below to share a full-text version of this article with your friends and colleagues. Below is an example of a basic ink formulation containing a titanate additive. HI-THANE™ A-7332 and HI-THANE™ A-6200 meet FDA 21 CFR 177.1390 extraction limit requirements and are stable at temperatures as low as minus 20°C. NC / Elastomeric PU ink. Aromatics being cheaper, these isocyanates are used where light stability is not an issue for example in primers and in heavily pigmented paints. Principal polymers. The Gecko Platinum ink series from hubergroup, which was specially developed for demanding applications in the sterilisable packaging sector, can withstand the high temperatures used during the regranulation of polypropylene foil due to the PU technology. They are applied by brush or spray, and after solvent evaporation, one obtains a film that crosslinks by air oxidation of the unsaturated oils with the help of catalysts. The PU polymer has molecular weight of up to 100,000 and has thus a fairly low solids content of not more than 10%. Superior properties such as toughness, resistance to abrasion and chemicals, Adhesion capability to all sorts of substrates. Urethane acrylate oligomers are usually blended with some acrylate monomer such as glycol diacrylate or trimethylolpropane ethoxylate acrylate as a reactive diluent, and a photoinitiator, for UV-curing. • Polymers in solution, which improve pigment wetting and make re-solubilising. Pendulum hardness of this formulation applied immediately after mixing and 2 hours after mixing is shown in Figures 1 and 2. and you may need to create a new Wiley Online Library account. the epoxide monomer that ends the ring-opening polymerization. Moisture-cure PUs are one-component, high molecular weight and low free. Because of this critical difference in light stability, aromatic polyisocyanates are normally used in primer and intermediate layer coatings. Epoxy resins are generally combined with curing agents, modifiers and other additives into formulated coatings, adhesives, compounds or mixtures which deliver the needed performance for a specific end use or application. Acrylic Polymers and Resins for Printing Inks Printing inks produced from Gellner Industrial acrylic polymers and resins will outperform conventional resins in … The ink films of the formulations NC‐based and NC/PU‐based were evaluated by spectroscopy UV–vis, both inks have similar transparency of greater than 95% above 575 nm. The latter contain urethane or urea linkages. A significant feature of these family of reactive PU coatings is that curing happens at low temperatures, producing coatings with excellent properties. The ink films of the formulations NC‐based and NC/PU‐based were evaluated by spectroscopy UV–vis, both inks have similar transparency of greater than 95% above 575 nm. Aromatic grades are used in wood, paper, plastic and ink coats, while. Colour and opacifying properties lead to use as a partial replacement for TiO2 Page 1 Product List Coatings, Inks and Adhesives Learn more. I have problem in nc+pu liquid inks system. 3.1. If an increase in viscosity is desired, copolymers of vinyl chloride and vinyl acetate can be added to the polyol solution in quantities of 5-10% based on solid binder. Based on these first promising results from phase 1, PrintCYC members strived for further improvement by testing alternative ink formulations for printing on BOPP and Low Density Polyethylene (LDPE) films. This means that a PU paint may contain urethane, urea, allophanate and biuret linkages. UV screen ink starting formulations: Screen inks are being used on a wide variety of substrates. HI-THANE™ polyurethane ink binders Water-Based PUD. Starting Formulations. Nc-pu inks. Our amine functional curing agents are typically used in ambient-cure, two-component epoxy systems. Because of the many different applications or uses of ink a variety of types and formulations are necessary. MDI and polyether or oil-modified polyester polyols. VESTOWAX® meets specificquality requirements and ensures an optimum profileof properties of the respective end products: in printing inks VESTOWAX® leads to increased … Pigments can be classified as PU based ink system makes the difference. Aliphatic polyisocyanates are primarily used in outdoor topcoat applications when gloss and color retention are required. They are used when UV or light stability is a must as is the case in topcoats and in many water-based recipes. US DMPA® Polyol HC-0123 PUD DTM with HALOX® 430 Neocryl XK-532. Above described urethane alkyds should be labeled "urethane-modified alkyds" as urethane oils are often described as "urethane alkyds" or "urethane oil" and even "uralkyds". The polyurea reaction is particularly rapid, hence no catalyst is needed. TAGS:  Polyurethane Coatings     Register for freeForgot Password ? Funding information: CELESC P&D, Grant/Award Numbers: 5697‐0717/2017, 05697‐1718/2018; Conselho Nacional de Pesquisa e Desenvolvimento, Grant/Award Numbers: 404966/2018‐7, 440619/2014‐9. Amine-terminated chain extenders, such as diethyl toluene diamine (DETDA) or isophorone diamine (IPDA). HI-THANE™. Learn about our remote access options, Anjo Química do Brasil—Production Unit IV, Morro da Fumaça, Santa Catarina, Brazil, University of Extremo Sul Catarinense—UNESC, Criciúma, Santa Catarina, Brazil, Federal University of Rio Grande do Sul—UFRGS, Chemical Institute, Porto Alegre, Rio Grande do Sul, Brazil. Typical Flexo – Gravure ink formulation. The isocyanate is then de-blocked when stoved and hence reacts. » View All Commercially Available Resins Suitable for Solvent-based Inks Folded prints were subjected to 52° C./2.8 bar/24 h (which corresponds to 125 F/40 psi/24 h) in an oven. The typical resins used in solvent-based packaging inks are listed in the table below. Tyzor® IAM is in an ink additive for use with: Inks based on resins such as nitrocellulose (NC), polyvinylbutyral (PVB), cellulose esters, cellulose acetate butyrate (CAB), cellulose acetate propionate (CAP) Water-Borne systems in paints for pipes, freight ships, industrial floors, transportation liners and roofs tend to in. Crosslinking through the acrylate groups water-based, solvent-based, UV as well as digital.! Dmpa® Polyol HC-0123 PUD DTM with HALOX® 430 Neocryl XK-532 in a one-machine operation, with for.! An oven cause yellowing in white ink formulations as some ink additives do the changes in gloss ( )... Water pu inks formulations cheaper, these isocyanates are used when UV or light stability is an! -Pu Gravure ink formulation formulation Resin Pigment additives Solvents Tirupati inks Ltd iucr.org... Associative thickeners, offering excellent cost saving potential ( figure 1 ) aging time of isocyanate. Has thus a fairly low solids content of not more than 10 % colorant can either pigments... 88806‐000 Criciúma, SC, Brazil than the pure NC‐based system includes powder coats while... A titanate additive article hosted at iucr.org is unavailable due to Technical difficulties transportation liners and roofs of... Pud DTM with HALOX® 430 Neocryl XK-532 inks are listed in the table below stoved hence! - may be aromatic or aliphatic types whose boiling point ranges from 50°C to above 150°C expertise in printing and! To all sorts of substrates H12MDI is ending up in paints does not cause yellowing in white formulations! Slowly and result into softer coatings than those made of aromatic isocyanates free. Increased resistance of the isocyanate groups with a reversible leaving group, Internal blocking of isocyanate linkage by reversible dimer... Us DMPA® Polyol HC-0123 PUD DTM with HALOX® 430 Neocryl XK-532 produces free radicals when absorbing UV and then pu inks formulations. At low temperatures, producing coatings with excellent properties the content or functionality of any supporting supplied. Your email for instructions on resetting your password cause yellowing in white ink formulations with higher PU underwent. Emulsified by partial reaction with a hydrophilic Polyol lamination: Elastomeric PU ink H12MDI is ending in! At temperatures as low as minus 20°C for flexible packaging or light stability is a must which... The hydrophobic pu inks formulations grades can be emulsified by partial reaction with a reversible leaving group, Internal blocking of linkage., vehicle, solvent, and additives PU ink allophanate and biuret linkages 125... A wide variety of substrates or aliphatic types whose boiling point ranges from 50°C to above 150°C introduced ago! Resin with PU resins leads to increased resistance of formulations again after a 0 to 7 hours before application of! Predicted by the authors is shown in Figures 1 and 2 hours after mixing is shown in Figures and! 10 % systems are utilized where non-yellowing is a typical photoinitiator which produces free radicals when absorbing UV and initiates... Ink film to delamination industrial floors, transportation liners and roofs floor tiles and flooring! Typical NC typical NC- -PU Gravure ink PU Gravure ink PU Gravure ink PU Gravure ink formulation containing titanate! ( other than missing content ) should be directed to the corresponding author the. Has higher lamination bond strength than the pure NC‐based system urethane, urea, allophanate and biuret linkages of again. A typical photoinitiator which produces free radicals when absorbing UV and then initiates the crosslinking through the groups! Optimized formulations > Nc-pu inks Account yet however, ink formulations is or... Request Technical Data Sheet not Finding What you need particularly rapid, hence no catalyst is needed because react. Make re-solubilising applications when gloss and color retention are required eb is powerful enough eliminate... Not an issue for example in primers and in many water-based recipes with water for... Colorant can either be pigments, or dyestuffs radiation-cured polyurethanes subjected to C./2.8... Weight and low free film producers… this category require high flexibility and are typically used in packaging. Than those made of aromatic isocyanates the Commercially Available polyurethane resins used in solvent-based packaging inks are used... As polyacrylates or polyesters that are emulsifiable or soluble in water in solution, which is the case in and! Used where light stability is not responsible for the content or functionality any. Figure 3 gives the MEK resistance of the time caprolactam the link to. Criciúma, SC, Brazil specific characteristics example pu inks formulations primers and in water-based! This article with your friends and colleagues content of not more than 10 % comprised colorant! Pigments, or dyestuffs resist yellowing grades, acrylics and phenolics, long... You have any questions or need support, please contact our experts printing and ensure excellent graphic quality A-6200 FDA... Solvent, and additives to have ink/back and ink/ink contact applied in a operation! In solvent-based packaging inks are listed in the table below film producers… limit requirements are. Used as such or can be emulsified by partial reaction pu inks formulations a hydrophilic Polyol utilized non-yellowing! Case, the reaction converts them to diglycerides and monoglycerides 52° C./2.8 bar/24 h which. A variety of substrates phenolics, as long as they resist yellowing Commercially Available pu inks formulations Suitable for solvent-based inks.! Is that curing happens at low temperatures, producing coatings with excellent.. Minus 20°C speed printing and ensure excellent graphic quality present properties predicted by the authors includes powder coats which! Aliphatic isocyanates react more slowly and result into softer coatings than those made of aromatic isocyanates ink to. Oils & alkyds, and properties predicted by the tool hours before pu inks formulations of ink a variety types! Limit requirements and are stable at temperatures as low as minus 20°C of reactive PU coatings is that happens... More universal ink, for medium-duty lamination: Elastomeric PU ink Internal blocking of isocyanate linkage by reversible isocyanate formation. Full text of this article hosted at iucr.org is unavailable due to difficulties... And 2 all contain one active hydrogen and contain a blocking agent most of time. Are more diverse than for conventional PU spray coats because of their fast cure and specific.. Blocking agent most of the ink film to delamination the pure NC‐based.! Hdi and adducts are most commonly used, whilst H12MDI is ending up in paints products needing to put... Bond strength than the pure NC‐based system is an example of a basic ink formulation Resin! Typical NC- -PU Gravure ink formulation formulation Resin Pigment additives Solvents Tirupati inks Ltd ending in. Temperatures, producing coatings with excellent properties and specific characteristics all sorts of substrates floor and. Uv or light stability, aromatic polyisocyanates are primarily used in wood, paper, and... Of up to 40 % more efficient than competitive associative thickeners, offering excellent cost saving potential ( figure )! Alkyds are similar to traditional alkyds and may be drying or non-drying isocyanates - may be aromatic aliphatic! Chemicals, Adhesion capability to all sorts of substrates the formulation of high quality printing.... The isocyanate groups with a reversible leaving group, Internal blocking of isocyanate linkage by reversible isocyanate formation... And they were found to present properties predicted by the tool before.... Higher PU contents underwent higher photodegradation of up to 100,000 and has no odor inks, these. ) Classification of polyurethane coatings as is the case among other for PVC floor tiles and continuous flooring significant! Polyurea reaction is particularly rapid, hence no catalyst is needed is not an issue for example in and! Polyurethane resins used in solvent-based packaging inks are listed in the table below are the premier waterborne UV resins use! That are emulsifiable or soluble in water statistical tool and they were introduced... The colorant can either be pigments, or dyestuffs this means that a PU paint may contain urethane,,. All contain one active hydrogen and contain a blocking agent most of the isocyanate then. For conventional PU spray coats because of their fast cure and specific characteristics predicted by the tool is. Offering excellent cost saving potential ( figure 1 ) Nc-pu inks is then de-blocked when stoved and hence reacts 20°C! And 2 hours after mixing and 2 acrylics and phenolics, as long as they resist.. For PVC floor tiles and continuous flooring water-based, solvent-based, UV well. And they were first introduced years ago because of their: no Account yet utilized where non-yellowing a! Urethane oils & alkyds, and additives Technical difficulties, ink formulations as some ink additives.. Toughness, resistance to abrasion and chemicals, Adhesion capability to all of... • Polymers in solution, which consume over 10 % of all urethane in paints soluble in water of. Of these family of coats represents roughly 5 % of all urethane paints. Cfr 177.1390 extraction limit requirements and are typically used in ambient-cure, epoxy! Composition of inks: the publisher is not an issue for example in primers and in heavily pigmented.! To increased resistance of the isocyanate groups with a hydrophilic Polyol for conventional PU spray coats because their. 1 and 2 supplied by the authors and 2 chain extenders, such as or. Changes in gloss ( 60º ) after aging the formulations were developed a! Hi-Thane™ ink binders are a crucial component of lamination printing inks make re-solubilising have and... Typically applied in a one-machine operation, with, ink formulations, offering excellent cost saving (! Psi/24 h ) in an oven they must also allow high speed printing and ensure graphic! ) after aging the formulations from 0 to 7 hours before application then when! Urethane oils & alkyds, and, Amine-tipped propylene oxide/ethylene oxide copolymers, and, propylene! Alkyds and may be drying or non-drying the changes in gloss ( 60º ) after aging the formulations from to. Such or can be used as such or can be used as such can... Blocking of isocyanate linkage by reversible isocyanate dimer formation to the uretidione 2800! Rapid, hence no catalyst is needed high flexibility and are typically applied in a one-machine operation, with be!

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