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European Coatings Show Pre vie w December 20 14 www european coatings show com Focus Lonza offers a comprehensive product suite to meet a wide range of application needs for dry film and in can preservation Omadine Technology Color Stable preservation based on Zinc Pyrithione chemistry Long lasting broad spectrum dry film protection Proxel Technology Innovative in can protection for long term performance Effective against bacteria fungi and yeasts in a wide range of industrial aqueous based products Next Generation Dry Film and In Can Preservation www lonza com T 41 61 316 81 11 E industrial solutions lonza com Use biocides safely Always read the label and product information before use European Coatings Show 2015 Visit Us at Booth 7 758 Omadine Proxel Ad indd 1 11 6 14 3 34 PM Early development of film barrier is critical Corrosion protection with waterborne coatings still needs a lot of research Although many drivers push the development of low VOC coatings there are factors that are impeding the transi tion from solventborne sys tems according to Mark Wubbels of Michelman Waterborne coatings normally require the use of additives and or co solvents Is the aim to develop a real zero VOC waterborne coating therefore too optimistic Mark Wubbels We don t believe that this is too op timistic The movement to low VOC coatings has oc curred gradually over the last hundred years If you only look at how much has been achieved over the past dec ades through the substitution of waterborne replacements for solventborne coatings for interior decorative paints you can see that this substi tution has been accompanied by a true paradigm shift whereas in the past most experts thought that water borne coatings could only get close to the end properties of solventborne incumbents in areas where there has been a true driver to find solvent free substitutes waterbornes have not only met these requirements but actually surpassed them What do you consider to be the most remarkable development for waterborne coatings in the past Wubbels Now while there are many drivers pushing fur ther development of low VOC coatings such as consumer awareness of indoor air qual ity and health increased regulatory pressure on sol vent emissions and the aspi rational drive of companies to build an environmentally more sustainable portfolio and image there are factors that are impeding the transi tion Examples are raw mate Mark Wubbels Michelman rial costs and the fact that drivers and standards differ around the globe making im provements in VOC reduction less attractive and scalable In the end everybody makes an economic assessment of what s required and eco nomically justifiable versus what are essentially costly nice to have s This besides technical challenges partly explains why the momentum to further replace VOC con taining coatings has slowed in markets where low VOC is not an absolute requirement However we believe that those companies which are the most creative and broadly adept at both resin and ad ditive design that promotes good film formation without the need for coalescents will advance the VOC free paint market beyond its current incremental pace Waterborne formulations for corrosion protection is still a field with high demand on research what needs to be done Wubbels In particular for coatings for corrosion pro tection the challenge of striking the right balance be tween technical performance requirements processability and economics can be daunt ing when trying to replace solventborne systems Wa terborne resins have so far only been able to gain entry to less demanding coating applications for corrosion prevention because of their technical performance A further development drive aimed at early development of film barrier properties adhesion control over the electrochemistry of corro sion and the compatibility of resins additives and pig ments is critical for a break through Raw material suppli ers who can bring a complete formulator friendly solution to coating companies and formulators who can develop these into direct to metal coatings that save costs in the value chain by eliminating the need for primers will be at the forefront of this success xz 9 Waterborne technology still needs improvements to fulfil the high perfor mance level of protective coatings