Korea.net, August 23, 2007
Korean researchers have developed an eco-friendly paint using cashew shells that does not use formaldehyde, a state-run chemical technology institute said Thursday (Aug. 23).
The team, led by Song Bong-geun of the Korea Research Institute of Chemical Technology, said cashew shells and biocatalysts such as peroxidase and hydrogen peroxides were used in manufacturing the paint. Cashew nuts are commonly found in countries with warm climates like Brazil and India.
Paint is usually manufactured by mixing phenol and formaldehyde.
Such substances, which have been blamed for causing cancer in humans, are also the main cause of the so-called sick house syndrome.
"The new paint is not only ecologically friendly, but has excellent chemical, heat and smoke resistant qualities," said Song.
The researcher said the new paint uses 50 percent less energy to make and has good stain resistant properties.
"For the immediate future the paint will be used on wood products, although efforts are underway for wider industrial applications," he said. He said the paint could be used on such products as mobile phones and heavy duty coating for large structures.
The expert also said full-scale production should start next year, with domestic sales reaching 40 billion won ($42.4 million) annually within five years. He said with foreign countries placing stricter guidelines for harmful chemicals, the paint has good export potential
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