The invention describes methods of preparation and compositions of plasticizers. The plasticizers include at least 2 alkyl ketal ester moieties and have a molecular weight of greater than 300. In one aspect, the alkyl ketal ester moieties are levulinic ester ketals. Certain compositions contain at least one of an antioxidant, a UV stabilizer, a thermal stabilizer or mixtures thereof, present in the composition from about 0.01 to about 5.0 percent by weight of the total composition.
这项发明描述了制备方法和
塑化剂组合物。这些
塑化剂包括至少2个烷基酮
缩醛酯基团,并且具有大于300的分子量。在一个方面,这些烷基酮
缩醛酯基团是
乙酰丙酮酯
缩醛酯。某些组合物包含至少一种
抗氧化剂、紫外线稳定剂、热稳定剂或它们的混合物,其在总组合物中的重量百分比约为0.01至约5.0。