A process for reducing the odor of isotactic polypropylene containinq an odor producing unsubstituted or substituted benzoic acid ester by admixing molten isotactic polypropylene with a compound capable of undergoing transesterification with the odor producing ester, said transesterification compound being (i) a partially esterified glycerol; (ii) an epoxide; (iii) a monofunctional or polyfunctional alcohol; (iv) an aliphatic acid ester; or (v) mixtures thereof wherein the transesterification compound is of such functionality and/or of sufficient molecular weight to yield an ester of a molecular weight of at least about 300 upon undergoing ester interchange with said odor causing benzoic acid ester.
一种减少含有产生异味的未取代或取代
苯甲酸酯的异构聚
丙烯异味的工艺,方法是将熔融异构聚
丙烯与一种能与产生异味的酯发生酯交换反应的化合物混合,所述酯交换反应化合物为:(i) 部分酯化
甘油;(ii)
环氧化物;(iii) 单官能度或多官能度醇; (iv)
脂肪酸酯;或 (v) 它们的混合物,其中所述酯交换化合物具有这样的官能度和/或足够的分子量,以便在与所述产生气味的
苯甲酸酯发生酯交换反应时生成分子量至少约为 300 的酯。