Cutting-edge dispersing agents for natural colors. Efka dispersing agents for digital printing

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1 Cutting-edge dispersing agents for natural colors EDC_4311_e_R_Efka_DispAg_Vers1.indd 2

2 2 More ways to achieve more with inkjet printing With a new generation of dispersing agents, ASF now introduces the next generation of inkjet inks with even higher performance this means more pigment stabilization options for formulators, more colors for designers and printers, more digital printing. Inkjet printing requires highly stable inks at low viscosities. Such inks can only be achieved with the most carefully selected high-performance pigment dispersing agents. Efka products are known for their high performance and have become essential for modern inkjet applications. hard, waxy clear, free-flowing Tailor-made dispersing agents, and Efka 7732 provide pigment dispersion by steric stabilization using the most innovative processes in industrial polymer chemistry. This new generation of polymeric dispersing agents is tailor-made for inkjet applications and ASF s new product series covers the full range of formulating requirements for all important ink types and a broad selection of pigments to give the highest performance in solvent-based and UV-curable inkjet inks. Competitor Efka 7732, and Efka 7732 do not contain solvents. road solubility and show good solubility in common monomers and oligomers used in UV-curable inkjet inks. Efka 7732 is also effective but shows slight haziness in some monomers. Easy to handle products, and Efka 7732 are liquid and solventfree. Unlike products that are solid or waxy, they are easy to handle and easy to dissolve. EDC_4311_e_R_Efka_DispAg_Vers1.indd 3 The dispersing agents also show good solubility in solvents commonly used in mild- and strong-solvent inkjet inks. The products also have good solubility in ethanol and ethyl acetate. All three products have limited to no solubility in very apolar solvents such as pure alkanes and mineral oils. For these media a product such as Efka 7711 is better suited.

3 3 Ink and millbase stability Cinquasia Magenta L 4540 (Old name: Cinquasia Magenta RT-343-D) Product selection % UV Strong-solvent Mild-solvent Efka 7732 Good stability in mill base and in finished ink The stability of the pigment dispersion in the ink is very important. Efka dispersing agents not only impart good stability to the finished ink but also to the higher concentrated mill bases. This allows storage of the mill base without risk of flocculation before use in the finished ink formulation. A good example of this stabilizing ability is given here for a 100 % UV-curable ink formulation. is compared to a competitor dispersing agent for use with a quinacridone pigment. 1 viscosity stability (%) Products active dispersing agent on pigment (%) 70 millbase ink Comp millbase Comp ink Here provides good stabilization of the mill base and the finished ink whereas the competitive product does not sufficiently stabilize the pigment. The stabilizing properties of the dispersing agents impart good filtration performance to the inks resulting in clog-free print-heads and filters. EDC_4311_e_R_Efka_DispAg_Vers1.indd 4

4 4 Smooth flow for perfect coverage Low viscosity and near-newtonian flow Performance over a broad range of pigments A flat rheological profile with minimal viscosity change on storage or jetting is a very important requirement for inkjet inks. Developing low viscosity in the finished ink is also important. oth of these properties can be achieved with the new Efka dispersing agents. and outperform the tested competition products for all the tested pigment chemistries in a UV-curable inkjet formulation. Viscosity 100 % UV system 3 % pigmentation viscosity [mpa.s] stability viscosity [mpa.s] Cinquasia Magenta L 4540 (Old name: Cinquasia Magenta RT-343-D) Efka 7731 low-shear high-shear 40 competitor stability The diagram shows that gives lower viscosity when compared with the competitor product. Furthermore the high- and low-shear viscosity values are almost equal indicating a near-newtonian flow profile. EDC_4311_e_R_Efka_DispAg_Vers1.indd 5 0 Efka comp Efka comp Efka comp Efka comp Efka comp Magenta PR122 lue 15.4 high-shear viscosity Yellow PY151 lack Pk7 Magenta PR2 low-shear viscosity The Efka products give the lowest viscosity and good stability even at low use concentrations.

5 5 Product selection by formulation type and pigment Products Old name Colour Index Efka 7700 mild-solvent inkjet formulation Cinquasia Magenta L 4540 Cinquasia Magenta RT-355-D Cromophtal Yellow L 1061 HD Irgazin Yellow 88 P.Y. 151 Cromophtal Yellow D 1085 Cromophtal Yellow LA2 P.Y. 150 NIPex 1 1 Q Heliogen lue D 7110 F Irgalite lue GLVO Products Old name P.k. 7 P Colour Index Efka 7732 Efka 7700 strong-solvent inkjet formulation Cinquasia Magenta L 4540 Cinquasia Magenta RT-355-D Cromophtal Yellow L 1061 HD Irgazin Yellow 88 P.Y. 151 Cromophtal Yellow D 1085 Cromophtal Yellow LA2 P.Y. 150 NIPex 1 1 Q P.k. 7 Heliogen lue D 7110 F Irgalite lue GLVO P Products Old name Colour Index Efka 7732 UV-curable inkjet formulation 100 % solids Heliogen lue D 7110 F Irgalite lue GLVO P Cinquasia Pink D 4450 Cromophtal Pink PT P.R. 122 Cromophtal Yellow L 1061 HD Irgazin Yellow 88 P.Y. 151 Cinquasia Magenta L 4530 Cinquasia Magenta RT-343-D P.R. 2 P.k. 7 Evonik 1 Special lack 250 highly recommended recommended EDC_4311_e_R_Efka_DispAg_Vers1.indd 6

6 6 The power to dazzle Performance with inorganic pigments ASF products for digital printing, and Efka 7732 are also effective with inorganic pigments such as TiO2. For example, is effective for white UV-curable inkjet formulations. Cinquasia, Cromophtal, Heliogen, Irgalite, Irgazin and Paliotol pigments for solvent-based and UV-curable inkjet inks The products have also shown good performance with inorganic pigments used in ceramic inkjet printing providing good stability with no sedimentation. In some systems, performance can further be improved when high-molecularweight dispersing agents are combined with Efka Cromophtal, Heliogen, Irgalite, Irgazin and Paliotol pigments for aqueous inkjet inks High-performance solutions for inkjet and energy-curable inks,, Efka 7732 dispersing agents Cromophtal, Heliogen, Irgalite, Irgazin and Paliotol pigments for color electrophotographic toners tailor-made for high-performance printing applications liquid, undiluted, solvent-free products which are easy to use and handle at room temperature new proprietary ASF polymer technology Orasol dyes for solvent-based inkjet inks for coding and marking asacid dyes for aqueous inkjet inks Microlith pigment preparations for solvent-based and UV-curable inkjet inks Efka high-molecular-weight pigment dispersing agents for UV-curable, solvent- and water-based inkjet inks Efka defoamers, slip and leveling agents Joncryl HPD styrene/acrylic resin solutions for pigment dispersion in water-based inkjet inks Joncryl styrene/acrylic resins for solvent-based inkjet inks A new family of premium dispersing agents that provide Darocur, Irgacure and Lucirin photoinitiators for UV curing superior rheological properties higher pigment loading in mill bases unmatched pigment dispersion stability near-newtonian flow behavior For best-in-class printing inks that set new performance benchmarks for the whole industry. EDC_4311_e_R_Efka_DispAg_Vers1.indd 7 Laromer reactive diluents and oligomers for UV curing Irgastab and Irganox additives Tinuvin UV absorbers and hindered amine light stabilizers

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8 Contact Europe ASF Schweiz AG Pigments Klybeckstrasse asel Switzerland Tel.: Fax: ASF Nederland.V. Resins & Additives Innovatielaan SN Nijehaske The Netherlands resins@basf.com formulation-additives-europe@basf.com EDC 4311 e Eastern Europe, Africa, West Asia ASF SE Dispersions & Pigments EUM/SD - Europe House Ludwigshafen Germany Tel.: Fax: ASF SE Ludwigshafen Germany The data contained in this publication are based on our current knowledge and experience. In view of the many factors that may affect processing and application of our product, these data do not relieve processors from carrying out their own investigations and tests; neither do these data imply any guarantee of certain properties, nor the suitability of the product for a specific purpose. Any descriptions, drawings, photographs, data, proportions, weights, etc. given herein may change without prior information and do not constitute the agreed contractual quality of the product. The agreed contractual quality of the product results exclusively from the statements made in the product specification. It is the responsibility of the recipient of our product to ensure that any proprietary rights and existing laws and legislation are observed. When handling these products, advice and information given in the safety data sheet must be complied with. Further, protective and workplace hygiene measures adequate for handling chemicals must be observed. = registered trademark of the ASF Group EDC_4311_e_R_Efka_DispAg_Vers1.indd 9 1 = registered trademark of Evonik Industries :52