ASTM D4213 – when the 1st class of EN 13300 is not enough for quality of latex paint

IntroductionThe standard adopted since 2001 to classify the scrub resistance of wall paint coatings in Europe is EN 13300. It defines 5 classes depending on the thickness loss of coatings after 40 or 200 cycles, determined in accordance with ISO 11998. Thanks to this method, many paints on the European market can be well characterizedContinue reading “ASTM D4213 – when the 1st class of EN 13300 is not enough for quality of latex paint”

Why HMIS and NFPA 704 labeling are better than GHS?

In Europe, the labels of chemical substances, including paints and paint raw materials, contain GHS (Global Harmonized System) markings. This system was developed by the United Nations and is used throughout the European Union. In the SPEKTROCHEM paint laboratory located in Poland, however, we use slightly different systems for marking hazardous substances and associated hazards.Continue reading “Why HMIS and NFPA 704 labeling are better than GHS?”

Anti-Sag Index according to ASTM D4400. How to properly use this standard?

Paint runoff from vertical surfaces is an undesirable feature which, if present, causes not only unsightly drops or curtains. It is also heterogeneous thickness of the coating, which causes local less thickness, as well as local thickening, which, due to uneven drying and its thickness after drying, causes inhomogeneous strength of the coating. In orderContinue reading “Anti-Sag Index according to ASTM D4400. How to properly use this standard?”

Drying time tests and open-time tests of latex paints

Latex paints dry as a result of the coalescence process of polymer dispersion particles that bind all paint components to form a coating. This process occurs under certain conditions correctly, with appropriate selection of raw materials. To this end, raw materials such as dispersion binder and additives are selected appropriately – in order to reduceContinue reading “Drying time tests and open-time tests of latex paints”

Foodstuff and household chemicals resistance tests of kitchen coatings

Kitchen surfaces are exposed to food contact, accidental splashes. Coatings of paints used in kitchens, both on the walls and on cabinets or furniture tops, must be resistant to a number of food products, both in terms of temporary and slightly longer contact. The varied temperature of food products, chemical aggressiveness and solid or liquidContinue reading “Foodstuff and household chemicals resistance tests of kitchen coatings”

What does creating formulations for clients look like from the inside

The process of creating a formulation is a series of operations that follow one another and are mutually dependent on each other. Many of our clients ask what such a process looks like. I thought that a good idea would be not a technical and substantive article, long but a light to read during lunchContinue reading “What does creating formulations for clients look like from the inside”

Laboratory tests of viscosity and application parameters of latex paints

Proper application of the paint on the wall or ceiling guarantees not only its aesthetic appearance, but also ensuring the formation of a coating with appropriate properties. Application with a spreading rate, leveling, consistency, brush marks, … these are only some of the parameters that we test in our laboratory when selecting raw materials andContinue reading “Laboratory tests of viscosity and application parameters of latex paints”

European standard for latex paint classification EN 13300

In 2001 CEN (European Committee for Standardization) adopted the European standard EN 13300 ‘Paints and varnishes – Water-borne coating material and coating systems for interior walls and ceilings – Classification’. The purpose of this move was to classify selected parameters of coatings obtained from dispersion paints for painting walls and ceilings inside buildings. This standardContinue reading “European standard for latex paint classification EN 13300”

Freeze-thaw additives in latex paints on the Canadian market

Latex paints are generally not resistant to freezing temperatures. As a result of ice formation, polymer dispersions present in paints are destroyed. The need for heated transport, storage in heated warehouses is standard during periods of intense winter in countries such as Canada. However, there remains the problem of paint handling and heating failure inContinue reading “Freeze-thaw additives in latex paints on the Canadian market”

Challenges in the film forming of latex architectural paints

Polymer dispersions used as binders in dispersion paints form a film at specific temperatures characterized by MFFT (Minimum Film Forming Temperature). This is a property given by all latex binders manufacturers in technical data sheets. To reduce the temperature of film formation to the real environment, additives are used to make the polymer particles stickContinue reading “Challenges in the film forming of latex architectural paints”