Cellulose thickeners in medium-high PVC latex paints
Dispersion paints on the market vary in terms of quality and performance, which are defined at the very beginning by PVC (Pigment Volume Concentration). It is an indicator not only of the relationship between fillers and the film-forming substance in the coating, but also an indicator of the necessary thickeners to be used to ensure appropriate…
How to choose a polymer dispersion for budget contractor’s paints
In many markets, dispersion paints for indoor walls also require low-cost solutions that do not have to have high-performance coating properties. Their task is to obtain white, well-covering coatings with high PVC (Pigment Volume Concentration) intended for application by contractors. Such paints require formulation using raw materials that ensure minimum coating properties, and due to the…
Protection of waterborne paint cans against rust and microbial deterioration
Waterborne paints, both for architectural applications, for wood and for metal, in some countries are commonly packaged in metal packaging, more precisely, resin-lined cans. The surface of such cans is covered with epoxy phenolic resin from the inside, just like the lid. The resin-lined surface protects the metal can against contact with waterborne paint, but it…
How to achieve ideal rheological properties of liquid acrylic roofing membranes
Elastomeric roof coatings based on acrylic polymer dispersions, also called liquid roofing membranes, are today one of the most popular coating products for both application on new and renovation roofs. Their application is carried out in a rather thick layer, in which a reinforcing mesh is often embedded, and the diversity of elements present on roofs…
Formulating ceiling paints
Painting ceilings inside rooms is often done with the same paints as the walls were painted, however, in the vast majority of cases, painting is done with paints specially prepared for this purpose, called ceiling paints. But why do ceilings require dedicated paints and what are their formulations? Indtroduction Ceilings in both residential and public spaces…
Green bio-based coalescing additives in latex paint formulations
April 22nd is Earth Day and an opportunity to bring closer such a necessary topic as sustainability also in the water-based paint industry. While the transition from solvent-based paints to water-based paints is an obvious and undoubtedly necessary topic, the choice of bio-based raw materials for water-based paints and replacing the existing fossil-based raw materials raises…
Leveling test procedure ASTM D4062. What it is and how to use it?
Water-soluble paints based on winyl-acrylic, styrene-acrylic or pure acrylic emulsions contain thickeners in their formulations ensuring appropriate rheological properties at low, medium and high shear rates. Setting the ideal viscosity to ensure no sagging, Stormer-viscosity and ICI-viscosity requires a balancing of different rheological additives and dosages. Often, with selected rheological properties allowing for good application, no…
Formulating of latex paints using the relationship between PVC and CPVC
The formulation of latex paints, as well as paints in general, requires extensive knowledge of the basics of the raw material composition of paints, the raw material base and the amounts of use of individual raw materials. While the number of recommended dosages can be determined at the beginning from the doses oscillating in the ranges…
Effectiveness of thickeners in preventing sagging
Latex paint formulations for architectural applications are intended for the manufacture of DIY paints and for applications by professional painters who apply them with a brush, paint rollers and various spraying techniques. During their application, most substrates are placed on vertical surfaces, such as walls, furniture fronts or fences. Application to such surfaces carries the risk…
Settling in latex paints and slurries. Causes and elimination by anti-settling additives
Gravity pulls us and objects to the ground, but also pulls down particles of dispersed pigments and fillers, creating a deposit which over time can be very difficult or impossible to mix and distribute again in the paint. This phenomenon is also present in water-borne paints based on acrylic polymer dispersions, and in this article we…
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