1940: Solvent-borne paints
Alkyd resin paints with very high solvent contents were the industrial norm many years ago.
1950: Latex paints
Although the launch of latex paints based on synthetic, organic polymers brought about a reduction in solvent content, the VOC level nonetheless remained high.
1970: Clean Air Act
The Clean Air Act put pressure on manufacturers. Many switched to formulations containing lower VOC levels.
1990: Extension of the Clean Air Act
The extension of the Clean Air Act pushed threshold values down even further. This helped establish vinyl acetate-ethylene (VAE) technology from WACKER on the market.
2007: Californian standard
Environmentally-aware California tightened the regulations on VOCs even further. This impacted the entire USA.
2016: Nearly VOC-free
Nowadays, environmentally sound paints sold in the USA are virtually VOC-free. Water-based paints based on VAE dispersions from WACKER contain so little volatile organic compounds (< 5 g/l) that they are called "Zero-VOC Paints" in many quarters.