What is the MFFT and how is it determined?

Water-borne paints based on dispersions of styrene-acrylic copolymers, pure acrylic copolymers, copolymers of vinyl acetate-ethylene (VAE) or with VeoVa, versatic and other monomers used in one-component architectural paints, direct-to-metal or wood, dry by evaporation of water and other volatile components and the coalescence of polymer particles , i.e. their sticking together. This process takes placeContinue reading “What is the MFFT and how is it determined?”

Viscosity measurements of latex paints in the area of high shear rates (ICI-viscosity)

Viscosity measurements with a Brookfield or Stormer viscometer are standard in R&D and QC of latex paints. However, they only cover a part of the shear area (low shear and mid shear) to which the paints are handled. The area responsible for the rheological behavior of the paint when painting with a brush, roller orContinue reading “Viscosity measurements of latex paints in the area of high shear rates (ICI-viscosity)”

1000 hrs in a UV chamber, but how many years in the real world?

As an external laboratory testing our formulations and samples of our customers, we often hear this question. We performed tests in a UV or xenon chamber, and the client, after receiving the report, asks “why is there no real world equivalent years?” In this article, we answer why there are no and will not beContinue reading “1000 hrs in a UV chamber, but how many years in the real world?”

Oil absorption of pigments and fillers

The oil absorption value is an integral record in technical data sheets of fillers and pigments used in paints. But what is the significance and what are the methods of determining the oil absorption? There are many myths about this parameter and there are several methods of laboratory OAV (oil absorption value) determination. In thisContinue reading “Oil absorption of pigments and fillers”

ASTM D2486 – why it is the most demanding method of scrubbability testing?

Regarding the latex paint tests, the wet-scrub test is one of the most popular tests performed for wall, ceiling and facade paint coatings worldwide. One of the test methods is ASTM D2486, which is the most frequently performed scrub test in our laboratory and is a useful method both for comparing the quality of variousContinue reading “ASTM D2486 – why it is the most demanding method of scrubbability testing?”

How to correctly check fineness of grind by Hegman gage

Fineness of grind is a test that is carried out all over the world in the production of paints by grinding in a dissolver or various types of mills. This test allows for a quick assessment of the fineness of pigments and fillers produced as suspensions (e.g. slurries, pigment concentrates, etc.) in the dispersing andContinue reading “How to correctly check fineness of grind by Hegman gage”

Formulating premium class latex paints for the US market

The DIY sector expects more and more premium class paints. Latex paints for interior painting are at the forefront of these expectations. Excellent hiding power, low or zero-VOC, no reactive VOC, perfect application properties in the hands of a non-professional painter are only part of the customer’s expectations. The parameters of the durability of theContinue reading “Formulating premium class latex paints for the US market”

Quality control of latex paints

Quality control (QC) in the production of latex paints is aimed at quickly checking the correctness of the preparation of a new batch of paint based on quick and easy to perform tests. Control tests are not aimed at verifying the quality of the paint, but only checking the repeatability of the batch in relationContinue reading “Quality control of latex paints”

Troubleshooting surface scratches with additives in DIY 1K WB acrylic clear wood varnishes

DIY water-borne clear varnishes are an important market segment that allows non-professional painters to paint themselves. They do not require specialized spraying equipment, and their coatings are easy to apply. They must also be resistant to everyday use, e.g. scratches caused by cleaning, accidental moving of objects or abrasions. One of the properties that canContinue reading “Troubleshooting surface scratches with additives in DIY 1K WB acrylic clear wood varnishes”

What is coatings mar resistance

In many applications, coatings require resistance to accidental damage, such as scratches or dents caused by moving objects on them. One of such applications are coatings of furniture paints, which, in addition to a number of properties such as blocking resistance or resistance to household chemicals, also need resistance to accidental scratches caused by movingContinue reading “What is coatings mar resistance”