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For the first time, the Fraunhofer Process Engineering and Packaging IVV team identified the odor of acrylic coatings and identified harmful odorous substances.
unpleasant odors often emitted by acrylic coatings are due to volatile organic compounds. They are organic, carbon-containing substances that evaporate easily even at low room temperatures and are gaseous
the
. Today's acrylic coatings are made up of water-soluble dispersions compared to earlier products. As a result, they have lower levels of volatile compounds and are considered very safe. However, despite their reduction, volatile organic compounds and the resulting odorous substances have not been completely eliminated. Therefore, exposure can have an impact.
acrylic paint can be traced back to the odor of benzene derivatives
Fraunhofer IVV now examines the odor active ingredients of acrylic coatings in more detail. For analysis, six acrylic coatings are regularly available to meet the needs of artists. The sample is characterized by a trained sensor panel in fraunhofer IVV. Odors are mainly due to various benzene derivatives. The main odor substances identified were styrene, ethyl benzene, isopropylene, butyl benzene and propylene. They make coatings smell like plastics and solvents. Polycyclic aromatic hydrocarbons also play a decisive role, , radon, manchu and tetrogen derivatives, as well as a variety of acrylics.
acrylic coatings - from analysis to low-risk products
Using her analytical methods based on aromatic research techniques, Professor Andrea Büttner identifies odorous substances in a variety of products. "Through our work, we have made a decisive foundation for avoiding it," said Fraunhofer IVV's deputy director and head of analytical sensor technology. Her team's Patrick Bauer is responsible for the study of odorous substances in acrylic coatings released at the end of November 2018. "Proven benzene derivatives, polycyclic aromatic hydrocarbons and odor acrylics that are harmful to health should be avoided in acrylic coatings," explains Patrick Bauer. "This reduces odors and potential health risks from the substances found. The selection of added solvents and softened ingredients plays an important role.
