Are you interested in the bio-based preservation of paint systems?

Stricter regulations are limiting the use of classic biocides and lowering their permitted concentrations. As a result, the paint industry faces major challenges in ensuring the durability and storage life of water-based paint systems. At Techniline we offer an overview of possible technological alternatives for preserving paints. Bio-based antimicrobials are certainly suitable for this purpose.

Water-based paint systems meet the need for more sustainable paints by needing less chemicals and having a lower concentration of volatile organic compounds (VOCs). However, the aqueous environment increases the chance that micro-organisms such as bacteria and fungi will be present and will grow. The reduced paint quality due to microbial degradation is seen as a change in colour, a strong odour, instability of the mixed components, pH fluctuations and a decrease in viscosity. This requires paint systems to be better protected against microbial action, both in the wet phase (PT-6: 'in-can' preservation) and in the dried film (PT-7: ‘dry film' preservation).

Traditional antimicrobial chemicals added to paint mixes include the isothiazolinones, but their use will soon be banned following initial restrictions on certain types of these products. Because they will not be effective at the proposed minimum concentrations, alternatives must be found that can be implemented in the long or short term. In the short term, this can be done by mixing existing biocides or adding nanomaterials. This will give off-the-shelf materials a synergistic effect that will offer protection at relatively low concentrations. In the longer term, new systems must be developed using bio-based agents with antibacterial properties.

Read the article about this on Techniline.

Accelerated transition to bio-based coatings

Within the VLAIO COOCK-project BioCoat Sirris is researching the implementation of industrially-available bio-based building blocks in coatings in order to support the transition from traditional fossil-based to bio-based systems. This is to supply knowledge on the formulation, application, performance and applications of bio-based coatings.

A particular aim of the project is to pool common challenges and provide solutions for the entire commercialisation chain. It also provides the opportunity to conduct exploratory research into implementing new paint systems in collaboration with various partners.

Read more about this on the project page.   

A new initiative to develop alternative preservation systems

The development of alternative conservation systems will be a common challenge for the paint industry in the coming years. For this, a multidisciplinary framework needs to be created with various actors in the field of regularisation, chemical synthesis, process technology and microbiology, with a direct link to application specialists. The implementation of bio-based components in paint systems naturally requires some changes and must be guided by research. Sirris wants to play a role in this as a partner in multidisciplinary research and development for the transfer of antimicrobial technologies from other sectors, such as cosmetics, food and the textile industry.

Sirris will be a partner in the European CORNET project, BIOCoCo for demonstrating antimicrobial techniques. This will be done in collaboration with Materia Nova, Fraunhofer IFAM and Fraunhofer IPA. This project proposal is in preparation and is open to your company's participation in the steering committee, which would allow you to integrate your challenges into the research and to propose sample cases. The project will give you a first-hand insight into the results and enable networking with companies from the value chain.

You can read more about this project in our blog.

Are you interested in taking part or would like more information about modalities? Contact us by 15 March 2022!

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