Composition of the pigment paste made up for subsequent testing of dispersion quality. After grinding, clear lacquers are pigmented with the prepared tinters and applied onto clean glass plates. The ratio of the pigment to binder solids should be as follows: Inorganic pigments = 20-30%. Organic pigments = 10-15%. Carbon black = 5-10%. 3).
dia mill, which produces significantly more shear, such as horizontal, vertical and basket mills. In order to disperse the pigment to a nano level, the use of 0.3-0.5 nm grinding media is recommended. Stabilization Due to the increased surface area of the solid particles dur-ing the deagglomeration/grinding stage, the pigments that are
PIGMENT DISPERSANTS FOR IMPROVING COLOR DEVELOPMENT IN WATERBORNE ACRYLIC AND STYRENE/ ACRYLIC PAINTS Elizabeth H. Lowe Ethox Chemicals, LLC, 1801 Perimeter Road, Greenville, SC 29605 blowe@ethox, 864-227-1620 Ease of use of a paint is of great importance to the consumer. Pigment dispersion stability on the shelf and in aqueous
Thermo Hog 16.0. The Mini Hog is a ride-on solution for pavement marking available in thermoplastic, waterborne, and tape models. Attach up to three Triple Spray Bars for a 12' blasting width! The Grinder Hog uses Computer-Controlled Profiling (CCP) for grinding, grooving, sinusoidal rumble strips, and plunge cuts as well as Pollution Control ...
A waterborne paint for traffic marking contains as an emulsion binder, a support polymer formed of styrene and acrylic acid monomers and having an acid value of between about 50 and about 250 and a hydrophobic emulsion polymer comprised of acrylic ester monomers and optionally including styrene monomers. The support polymer, in aqueous ammonia solution, …
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 ...
a novel waterborne pigment grinding resin, resin 6529, was developed in an attempt to achieve the dual goals of making a grinding resin that can (i) provide pigment grinding capability approaching that of a typical polymeric pigment dispersing additive, and (ii) improve the resistance properties of high-grade pigmented coatings, which are …
pigment dispersions with XM-2311 can be formulated at a high solids. Picture 1 shows a pigment dispersion prepared according to Table 4 with a pigment to binder ratio of 1/1 using a Irgazin DPP BO red pigment and a grinding time of 16 hours on a pebble mill and let down with a PUD dispersion. The same pigment dispersion diluted
Waterborne paints, such as Resene Hi-Glo, are usually based on emulsion resins that consist of trillions of tiny resin particles, about 1/100th of the diameter of a human hair. As the water in these paints evaporates the resin and pigment particles get closer and closer together until they begin to touch each other.
The milling chamber of the bead mill has an empty volume of 50 mL and it needed to be filled between approximately 65% (32.5 mL) and 85% (42.5 mL) with grinding beads. The size of the zirconium oxide beads used as grinding media was approximately 1–1.25 mm and the bead loading was maintained between 30–35 mL.
A waterborne pigmented liquid coating composition and method of making and using same which is substantially devoid of any surfactant dispersing …
Saint-Gobain ZirPro has been supplying high-quality ceramic media to the pigments, dyes and dispersions industries for more than 40 years. ZirPro offers a market-leading range of media (ER120, Rimax®, Zirmil® Ce and Zirmil® Y) to meet the exacting demands of grinding and dispersing processes.Selection of the optimum bead (density and size) is critical, as color …
A waterborne pigmented acrylic hydrosol coating of a white color suitable for use as a decorative coating is prepared by adding to a pebble mill as a grind portion 190.44 pounds of deionized water; 3.26 pounds of a 28% ammonium hydroxide solution; 23.62 pounds of an acrylic dispersant solution (Synthemul 40-425); 231.28 pounds of titanium ...
The grinding equipment (dissolvers, grinding mills, sand mills…) introduce mechanical energy in the system. This shear forces energy breaks and separates the pigment agglomerates in smaller particles. This new created surface is wetted by the grinding medium liquid.
This invention relates to water-dispersible phthalocyanine pigment formulations that are mixtures of (a) about 60 to about 99.5% by weight, based on the total amount of components (a) and (b), of a conditioned metal phthalocyanine pigment, and (b) about 0.5 to about 40% by weight, based on the total amount of components (a) and (b), of a water-insoluble sulfonated phthalocyanine …
Grinding media with a smaller diameter have a positive effect on the dispersion of pigment blacks, although their separation and cleansing are more difficult to achieve. In the experiments that will be described later, grinding media with diameters from 0.6-0.8 or 1.6-2.0 mm were used.
If this is a co-grind (grinding all pigments together), calculate for each individual pigment and add the amount of wetting and dispersing additive accordingly. One of our customers is not happy with the dispersibility of one of our organic phtalocyanine pigment during grinding to make a waterborne paste.
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 ...
Pigment dispersion can be a challenging process during the production of paints, coatings, and inks. Waterborne systems are particularly challenging due to environmental regulations, demand for premium color coatings, and cost considerations. Moreover, the quality of the dry paint film or ink is very much related to the uniformity of the distribution of the pigment.
A polymeric dispersing agent especially recommended for Inorganic pigments. First choice for all types of Waterborne decorative applications including pigment and extender slurries. Reduces pigment grinding time and prevents phase separation during long term storage. It is a REACH compliant grade.
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.
In the industry, the fineness of grind is generally achieved with a 2-step process. First, developers and producers of paints use a dissolver to reduce the particle size of their pigments and fillers to a certain degree of fineness. Then, when needed, they additionally use a pearl mill to further separate the solid particles from each other.
Very efficient wetting and dispersing additive for waterborne pigment concentrates and direct grinds; suitable for low-VOC and Eco-Label-compliant paints; Effective grinding of inorganic pigments and fillers; Leads to outstanding pigment concentrate acceptance with minimized rub-out values and high color strength
For use in waterborne coatings, anionic charged and non-ionic dispersing agents can be considered. Excellent wetting and dispersion performance in mill-bases for dispersion paints can be achieved using a combination of sodium- or ammonium-polycarboxylate and polymeric non-ionic surfactant additive.
The pigment was further dispersed using bead mill Mini Zeta-03-E NETZSCH Grinding & Dispersing Machine (Germany) at 1800 r/m for 2 h to obtain finely dispersed phthalocyanine green G pigment with average particle size of 118 d nm. The dispersion was filtered through 0.5 μm pore-filtering sieve to remove broken pieces of glass beads.
Ardo Verffabriek is the specialist in dispersing pigments with the use of pearl mills, turbo mills, dissolvers and three roll mills. We manufacture pigment dispersions for the coating, ink and plastic industry e.g. Waterborne pigment pastes. Universal colour pastes. Alkyd based pigment pastes. Acryl based pigment pastes.
States of pigment dispersion affects the various ink properties. The degree of dispersion and the interaction between the dispersed pigment particles are dependent on the mill base formulation.
Pigment dispersions. A 4-step procedure, as described in a separate study by the authors,30 was followed to prepare waterborne dispersions of non- ink grades of carbon black pigments. The dispersion formulations containing the pigment, the dispersant and the vehicle (water) were subjected to bead milling for an appropriate length of time and under …
Additol Xw 6565. Additol Xw 6565 is a universal, glycol-free, polymeric multifunctional grinding medium that has been specially developed for the production of low-VOC point-of-sale (POS) and in-plant colorants. It shows optimized pigment loading, outstanding weather durability, and excellent color performance.
US3329348A US320432A US32043263A US3329348A US 3329348 A US3329348 A US 3329348A US 320432 A US320432 A US 320432A US 32043263 A US32043263 A US 32043263A US 3329348 A US3329348 A US 3329348A Authority US United States Prior art keywords grinding vessel mass agitating agitator Prior art date Legal status (The …