Biocide Concentrates for a Wide Range of Plastics

Two companies recently introduced new portfolios of antimicrobial masterbatches for a wide range of resins and applications, including medical devices, consumer goods, kitchen and bath appliances, furniture, and films.

Two companies recently introduced new portfolios of antimicrobial masterbatches for a wide range of resins and applications, including medical devices, consumer goods, kitchen and bath appliances, furniture, and films. PolyChem Alloy, Inc., Lenoir, N.C., is now offering customized PolySept masterbatches, which typically contain 10% to 50% active agent in PE, PP, PS, ABS, nylon, PBT, or PC. Versions are said to be heat stable up to more than 400 C (752 F). Products are sold as 100%-active liquids or powders as well as pellet masterbatches. Active ingredients include an organic type that continually migrates to the surface of the finished product. Clariant Additive Masterbatches, Winchester, Va., now offers the CESA line of antimicrobial Masterbatches, which are said to dramatically slow the growth of bacteria and fungi on the surface of a wide variety of plastic components used in hospitals and other healthcare environments, and to reduce the incidence of odor and discoloration. They incorporate Milliken Chemical’s inorganic AlphaSan antimicrobial, a zirconium phosphate-based ceramic ion-exchange resin containing silver. These non-toxic, non-corrosive biocides reportedly have no negative impact on plastics processing and have excellent heat stability. As a result, they can be used with a wide range of resins from polyolefins and styrenics to nylon, PET, PBT, acetal, polysulfone, and PP-based TPVs.