12 September 2007 23:08 [Source: ICIS news]
HOUSTON (ICIS news)--BASF will introduce advances in colourants and light stabilisers, including ultraviolet (UV) absorbers, for polyethylene terephthalate (PET) at a trade fair, the company said on Wednesday.
The German chemical major said that Uvinul S-Pack UV absorbers will be commercially available following the 17th K 2007 International Trade Fair for Plastics and Rubber, to be held 24-31 October in Dusseldorf, Germany.
Traditional UV absorbers collect UV light along with some visible light, dissipating the energy in the form of heat.
According to BASF, the new chemistry absorbs in the UV region, but avoids most visible light.
"High loadings of UV absorbers are required to protect certain ingredients and can lead to yellowish discoloration of PET - something that will not happen with Uvinul S-Pack," said Thierry Chevrier, BASF's director for performance-chemicals pigments and additives in North America.
Instead, Uvinul S-Pack will avoid most visible light while fluorescing, releasing blue light and thereby eliminating the need for coloured bottles.
"This may allow formulators to select PET for packaging for some products that formerly required glass or a different resin," Chevrier said.
By offering both aesthetic and functional benefits, BASF hopes that Uvinul S-Pack will fill a need in the market for packaging that can outlast its contents, both functionally and aesthetically.
"It is a very exciting development," one source said. "A UV absorber that fluoresces blue and protects contents is somewhat of a breakthrough."
The German chemical major said potential applications include packaging cosmetics, juices, vitamins, vitamin beverages, soda, beer, sauces and other food items.
Chevrier added that "this is something that could open the door for similar technology to be developed for a range of other resins and applications."
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