RECENT DEVELOPMENTS IN NUCLEATION OF POLYPROPYLENE

摘要

RiKA International Limited presents an update on their three newest clarifiersucleators for polypropylene. These three innovative products are as follows: (1) RiKAFAST, with its free aldehyde suppression technology, is an effective clarifier with extremely low organoleptic properties. (2) For the first time, a non-acetal sorbitol product namely NJ Star PC-100 has become the new benchmark in clarified polypropylene. Haze values in random copolymer are extremely low and the stiffness-impact balance is vastly improved at very low addition levels. Based on new technology, this new product has no taste and odour issues. This new chemical is also an extremely effective nucleator in non-clear applications. Data presented demonstrates that when NJ Star PC-100 in block polypropylene, high stiffness values are achieved, as well as high impact strength at both ambient and zero degrees temperatures. Moreover, an aging study carried out showed that NJ Star PC-100 is the best long-term clarifier in the market even in controlled rheology grades. (3) NJ Star NU-100 crystalline type and content can be controlled by processing conditions which can lead to excellent i.e., impact strength or stiffness with superior impact-stiffness balance.