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Coatings Ingredients
The material selection platform
Coatings Ingredients
Article

Calculating VOCs

SpecialChem / Dec 16, 2009

Water is the number-one enemy of any structure, especially those made from concrete, natural stone or masonry. Penetrating water repellents have been a mainstay of the protective coating and sealant market for years due to their ability to protect the aesthetic properties of structures and provide protection against the damaging effects of water. Like most coatings and maintenance products, water repellents are expected to comply with increasingly stringent VOC regulations, i.e., any volatile carbon compounds that engage in atmospheric photochemical reactions. The simplest example of a VOC would be a solvent or drying aid. Common examples include alcohols (such as IPA), mineral spirits, kerosene, toluene or xylene. The only compounds that have been exempt from regulations are those that have shown negligible photochemical reactivity, such as volatile methyl siloxanes, acetone and tertiary butyl acetate. Conflicts between application specifications that require higher VOC products and tightening regulation standards pose a challenge to the market.

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