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US-based additives maker Riverdale Global has introduced a series of liquid antimicrobial agents for use with polyolefins and engineering thermoplastics, which it claims gives more effective product protection at lower letdowns than masterbatches.
The company says its Plus Clean (styled ‘+Clean’) additives can be used at letdown ratios of only 0.2 to 0.5% and disperse more readily in polymer than pellet concentrates. The company claims this offers greater antimicrobial protection at a lower cost.
Plus Clean antimicrobials are inorganic silver-based formulations that prevent discolouration, odours and product degradation caused by the growth of bacteria, mould, and yeast. They have been optimised for colour retention in both indoor and outdoor applications.
Plus Clean AM-139 liquid additive is for use with PE or PP at 0.2 to 0.4% letdowns; and Plus Clean AM-150 liquid additive is for use with engineering resins at letdowns of 0.3 to 0.5%.
“The liquid form of Riverdale Global’s Plus Clean antimicrobials ensures low and precise metering rates and improved mixing and dispersion,” said Charles Irish, Riverdale’s vice president of product development. “Enhanced dispersion is particularly important for product protection because it promotes an even distribution of the agent at the surface.”
Plus Clean antimicrobials are designated for use in housewares, consumer electronics, healthcare devices and other products in applications susceptible to microbial attack.
