MOSCOW (MRC) -- Clariant, a world leader in specialty chemicals, confirms that in its draft Alternatives Assessment report on flame retardants in flexible foam released in June, the US Environmental Protection Agency (EPA) identified Clariant’s oligomeric phosphonate polyol (OPP) flame retardant - marketed under the trade name Exolit OP 560 - as a safer alternative to pentabromo diphenylether (pentaBDE), traditionally used for giving fire protection to foam, reported the company on its site.
This is good news for the upholstery industry and other sectors looking for safer, environmentally more compatible flame retardants that meet internationally accepted flammability standards for flexible polyurethane foam.
The report is part of the EPA’s Design for the Environment program, which helps industries choose safer chemicals, and offers a basis for future decision-making by providing a detailed comparison of the potential public health and environmental impacts of chemical alternatives.
Exolit OP 560 is a reactive flame retardant that eliminates unwanted emissions since it becomes chemically bonded within the polymeric polyurethane foam structure. As a result, the Exolit OP 560 cannot leave the foam during use. Exolit OP is also halogen-free, and has a more favorable toxicological and environmental profile. In particular, it cannot bioaccumulate in humans and other organisms since it is "locked" into the foam. Further benefits for PU applications include excellent ageing stability, as well as low smoke density and smoke gas corrosivity in case of a fire. The phosphonate’s high effectiveness and good compatibility with natural polymers allow it to be used at low dosages in the foam matrix, which also adds to the foam’s excellent sustainability profile.
"Exolit OP 560 is not only halogen-free but becomes an integral part of the PU foam, creating possibilities to produce flexible foams with locked-in fire protection without the environmental and health concerns of traditional flame retardants," comments Adrian Beard, Head of Marketing Flame Retardants, Clariant. "The US-EPA report is a step forward in easing the identification of safer alternatives by PU foam producers and end-users."
Clariant is looking to expand capacity to meet increasing demand in the move toward more environmentally friendly and sustainable PU foams.
As MRC informed before, in June 2014, CB&I and Clariant announced that their new Ziegler-Natta (ZN) polypropylene catalyst plant in Louisville, Kentucky, is on schedule to begin production in 2015. The plant is part of a long-term strategic partnership between Clariant’s catalysts business and CB&I’s Lummus Novolen Technology business. Based at Clariant’s largest US production hub, the new facility will combine innovative catalysts jointly developed by both companies with high-capacity output.
Clariant AG is a Swiss chemical company and a world leader in the production of specialty chemicals for the textile, printing, mining and metallurgical industries. It is engaged in processing crude oil products in pigments, plastics and paints.
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