In recent years emphasis has been placed on environmental issues in the PVC stabihzer industry. The industry has focused on the reduction of heavy metals such as cadmium and lead, and reduction of volatile organic compounds (VOC's) such as phenol. Various PVC stabilizers have been designed to meet these needs. Organophosphites play an important role in hquid mixed metal stabilizers, and there are a variety of phosphites that are commercially available. The most widely used phosphites are esters that are based on the use of phenol and isodecyl alcohol. This paper examines a new class of cost-effective phenol free phosphites, patent pending, and measures their performance in flexible PVC apphcations. These new phosphites can be used to replace traditional phosphites in mixed metals stabilizers without the loss of thermal stability and with improvements in ancillary properties.
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