Mid viscosity Applications Pigment Grinding, OPV & Coating, Emulsion Polymerization. MSDS(US) TDS Selection Guide. Product Soluryl 120 Characteristics High viscosity, Good resistance Applications Pigment Grinding, OPV & Coating, Emulsion Polymerization. MSDS(US) TDS Selection Guide.
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c) Add the pigment(s) in stages and disperse in the normal manner. 7. As a result of the effect of the Solsperse hyperdispersant and the reduced resin solids, the dispersion viscosity is lower. To achieve an acceptable milling viscosity, gradually increase the pigment loading. 8. After milling, continue to …
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The primary objective of dispersing pigments in a dispersion or grinding medium by mechanical means, is to separate the pigment agglomerates which are formed during the drying processes in pigment manufacture. As particle size is reduced, the ... final paint) Millbase Viscosity 1000 sec-1 (Poise)
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protection and viscosity of the formulation. Often combinations of different types of pigments are used to obtain the desired color and hiding properties. ... It may be used for direct grinding or pigment paste process. 55 % Special Pigment wetting ADDITOL VXL 4992 0,5 – 2,0 %
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Usage Be incorporated before the pigments grinding. Storage CYD-2100 should be stored in a dry and cool place. ... Unique structure brings quick wettability of pigments and low viscosity of color ...
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Composition of pigment concentrates . The key component of a pigment concentrate is the pigment; the pigment content should be as high as possible.In addition, a grinding resin is required in most cases in order to obtain a storable paste and to ensure that the paste can be easily incorporated in the finalizing binder without any shock phenomena. The grinding paste is primarily chosen based on ...
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Pigment Grinding Reference 24 10-Sept-2018. Optimizing Dispersant Level in a Formulation. Some Best Practices after a dispersant has been selected Avoid mixing pigment types in a single dispersion if possible ... Viscosity Pigment. Settling ...
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Dispersion is a key phase in paint manufacturing. When it comes to emulsified paints, for example, it is widely considered as the most important phase. The goal in the dispersion phase is to cause most of the agglomerated pigments and fillers that are part of the formula to be stably separated as individual particles.. Depending on the properties desired for the paint being manufactured ...
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The theory behind processing, selection of wetting and dispersing agents, and the differences between co-grinding and single pigment dispersion are discussed. ... and viscosity in specific testing systems. They may even consider doing additional viscosity stability and dispersibility testing for certain pigments as needed. In addition to ...
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The viscosity of a pre-mixed dispersion is one of the main parameters to consider when selecting a particular milling equipment for grinding of pigment. Generally, high viscosity dispersions are not easy to grind using a lab-scale re-circulating bead mill. There are numerous factors that can potentially result in …
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The viscosity of a pre-mixed dispersion is one of the main parameters to consider when selecting a particular milling equipment for grinding of pigment. Generally, high viscosity dispersions are not easy to grind using a lab-scale re-circulating bead mill.
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The invention is pigment grinding aids for water-based inks which are produced by reacting an unsaturated fatty acid and/or resin acid with either acrylic acid, metacrylic acid, fumaric acid, or maleic anhydride to form a polycarboxylic acid anhydride. The polycarboxylic acid anhydride is reacted with an excess of polyamine to produce an amidoamide or imidoamide intermediate.
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Optimization of grinding parameters in the. The pigment paste was then diluted with water to give a final viscosity of 105 KU/23 °C or 120 KU/23 °C. The batch weight was measured in order to calculate the mass of the pigment preparation to be ground and in order to determine the required grinding energy.
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EHC – solids low viscosity epoxy based pigment dispersion. Low viscosity epoxy dispersion based on solids epoxy resin with an epoxide equivalent weight of 190-208 and a reactive diluent. This low viscosity product line is designed for easy introduction into the final coating.
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Pigment Production. The ultra-fine grinding of pigments places high demands on the machine technology to be employed. The finest, absolutely grit-free granulation, low-residue processing with minimal contamination, as well as fast, thorough cleaning when switching products are the minimum requirements. Technical Article from NETZSCH published ...
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Typically pigment dispersions with low viscosity and high surface tension are more preferable. Low viscosity in pigment dispersion means leaving more room for other ingredients such as polymeric binders and greater ease in maintaining overall viscosity of the final inks . If the surface tension of pigment dispersions is high,
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Compared to the tints made by grinding resins, slurries are generally more stable, lower in viscosity and sometimes supplied at higher pigment loading. However, the drawbacks of using slurries include the possibilities of excessive ing, especially in waterborne systems, as well as significant reduction in water, and chemical and corrosion ...
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The pigment dispersion process can be divided into three stages: wetting, dispersion/grinding, and stabilization. In wetting, it is important to use an additive that can reduce the surface tension of the water, enabling it to penetrate pigment pores thereby wetting of the pigments to be dispersed.. In the dispersion/grinding stage, the pigment clumps are mechanically separated into …
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A friend recently wanted to know about pigment grinding, which made me realize that I had better begin this article by saying that we do not grind pigments, we disperse them. ... Paste-letdown temperature or viscosity differences also may destabilize the …
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Apart from being strongly adsorbed at the surface of the solid particles, the dispersant has to give colloidal stability. Dispersion is said to be stable from colloidal point of view when flocculation of separated particles is prevented because the particles repel each other. *Functional groups, such as amine, amides, sulfonate, phosphate, for firm anchoring onto pigment surfaces are present ...
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Alibaba.com offers 3,660 pigment grinding process products. A wide variety of pigment grinding process options are available to you, such as showroom location.
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Pigments have been ground at 30-50% loading at a pigment to grinding aid ratio of 5:1 to 10:1. Water or a mixture of water, isopropanol, and a suitable amine (such as monoethanolamine) for pH adjustment was used to produce grind bases which exhibited excellent color strength and good compatibility with acrylic emulsions and lignin dispersions.
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Epoxy pigment dispersion based on solids epoxy resin with an epoxide equivalent weight of 190-208 and a reactive diluent. This low viscosity product line is designed for easy introduction into the final coating system. EHC is the product of choice for many applications including liquid cast epoxy parts, thermoset composites and pultrusion.
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Lab three roll mill is used for grinding and dispersing high viscosity and fineness material. It is widely used in inks pigment plastics and chocolates grinding test. Material viscosity 3000000cps. Production Capacity 0.5-5kgh. Application Fields Suitable for dispersing and grinding materials in industries such as ink. Live Chat
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When low-viscosity solvent is employed for pre-grinding, it is required to reduce the rotation speed and limit the duration to 15 minutes. (Note: Beads labeled as "pre-ground" need no pre-grinding during operation.) For low viscosity slurry, dispersion disc peripheral speed should not exceed 14m/s.
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A friend recently wanted to know about pigment grinding, which made me realize that I had better begin this article by saying that we do not grind pigments, we disperse them. ... Paste-letdown temperature or viscosity differences also may destabilize the dispersion. ... Pigment dispersion requirements in the lab include good color development ...
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VISCOSITY CLASSIFICATIONS INDUSTRIAL LUBRICANT CASSIFICATIONS ISO (International Standards Organisation) viscosity classification The ISO viscosity classification uses mm2/s (cSt) units and relates to viscosity at 40oC. It consists of a series of 18 2viscosity brackets between 1.98 mm /s and 1650 mm2/s, each of which is defined by a number.
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Colored pastes are made by grinding colored pigments into a liquid carrier on a 3-roll ink mill. An ink mill uses very tight clearances to crush the pigment aggregates to a fine dust, which is then dispersed in the accompanying liquid. Typical Hegman dispersion is 7 – the exact meaning of the Hegman scale will be discussed in further detail.
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where h is the depth (or height) of penetration during the time t, - is the surface tension of the wetting liquid, - its viscosity, - the wetting angle, r - mean radius of capillaries, C - structural coefficient, associated with parameters of the porous structure, W - energy (heat) of wetting.. The wetting step of dispersing processes can be intensified by the use of wetting agents and/or ...
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The graph in Fig. 1 shows the temperature dependence of the viscosity of a number of different inks (modified nitrocellulose ink yellow, magenta, silver and a polyurethane white) over a temperature range of 20 °C. Over this range, the viscosity can differ by up to 60%. Figure 1. Temperature dependence of ink viscosity.
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Some contours appear fuzzy if the viscosity is too low. Specifying a viscosity on the formula sheet is critical to assured repeatability in pattern production. When pigments are chemically manufactured, the colorant is pressed in vats and trays to remove water. The resulting product is called pigment press-cake and contains up to 25.0% non-
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The best approach to grinding such pigments is to knead the mass until no further change is observed in its consistency and then allow the mixture to "sweat." Sweating is a paint maker's term for allowing the pigment-vehicle mixture to stand for a period. Cover the mixture with a plastic film and let it stand overnight.
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