Zinc Stearate NB-60 Zinc stearate Crompton Plasticizers >> Metallic stearates Rubber - Elastomer (Chloroprene, Butyl …) ADHESIVE SEALANT ZINC STEARATES Additives for Plastics and Coatings Zinc stearate is the zinc salt of distilled, hydrogenated fatty acids. Products vary in final form to accommodate end-user processing variations. Zinc Stearate ED-HS (powder or pastille) is used as a processing lubricant in polyethylene where heat stability is important. The pastille form avoids dust generation. Zinc Stearate #42, having a very fine particle size, is used for uniform cell nucleation in expandable polystyrene. Zinc Stearate #42 is also used as a lubricant with urea- and melamine-formaldehyde resins. Lubrazinc ® W (zinc stearate) or Zinc Stearate #11 is used as a lubricant in fiber-reinforced polyesters. Zinc salt of distilled, hydrogenated fatty acids.