In addition to this VOC directive, there are also several market-specific
requirements and eco-labels that will set even stricter limits, not just for
VOCs, but for several other raw materials such as biocides and formaldehyde as
well. One example of a local eco label is Blaue Engel in Germany.
In
some cases, universality is seen as a compromise; colorants can have an effect
on paint properties, especially if the paint is not well adjusted to the
colorants. These changes in paint properties are mainly seen in the
solventborne paints, where colorants can prolong the drying time of the paint and
change the gloss level or film hardness. In addition, some other product
groups, such as masonry paints, may also require special colorants due to the
requirements for water repellence, for example. Product-specific technologies
are also preferred if the paint producer has decided to focus on certain paint
products (e.g., only waterborne paint).