3. Nov 2021 | Coatings Technologies
Wall paint eliminates corona viruses with silver technology
A few years ago, together with the Fraunhofer Institute for Chemical Technology, Bioni CS developed wall and facade paints that could be protected against mould and bacterial infestation with the help of nano-silver technology. In the course of further research, an interior paint has now been developed that, in addition to multi-resistant bacteria, also reduces corona viruses on the paint surface by more than 99.9%.
It is not only since the Corona pandemic that building-related, technical measures to prevent the spread of pathogens in public buildings have increasingly come into focus. Risk reduction measures are particularly important in places where sensitive or immunocompromised people spend long periods of time, such as schools, nursing homes for the elderly or hospitals. In addition to regular cleaning and (contact) surface disinfection as well as modern air filtration systems, antibacterial light switches and door handles, for example, are therefore increasingly being used there. The interior paint, which is sold under the product name "Bioni Hygenic Pro", can also be used here.
Silver system technology and biopolymer provide protective mechanism
The new interior paint achieves its anti-viral surface properties and its effective protection against gram-positive and gram-negative bacteria with the help of a special combination of active ingredients. The raw materials, based on a silver-doped poly-silicate, silicate light fillers and a special biopolymer, enable a uniform bioavailability of silver ions on the surface.
Corona viruses on the surface of the paint were reduced by 99.92% (3 log levels) within 24 hours, methicillin-resistant Staphylococcus aureus (MRSA) even by more than 99.99% (4 log levels).
Waterbased Acrylates for Decorative Coatings
Aqueous polyacrylates, as binders, dispersing resins and thickening polymers, are nowadays impossible to do without as raw materials in the paints and coatings industry. Since their introduction in the 1950s and 60s, straight acrylic and styrene acrylic dispersions have established themselves as environment-friendly, high-performace alternatives to the solvent-borne, air-drying alkyd resin binders used principally before. The particularly wide performance spectrum and high level of variability of the polyacrylates has enabled the propagation and consistent ongoing development of this product class as binders for coating materials. This book gives an overall view of the preparation and properties of aqueous acrylic dispersions and also the special features pertaining to their use in the architectural coatings sector. Following a general introduction to dispersions and emulsion paints manufacture at the beginning of the book, specialized chapters give a deeper insight into the diverse products such as primers, masonry paints, interior paints, plasters, wood coatings and gloss emulsion paints. The book presents an picture of the preparation of acrylic binders and the formulation of architectural paints. It is aimed both at students and newcomers to the paints and coatings field as well as at experienced dispersion users and practitioners in the paints and coatings industry.
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