Pioneer 4319 Magnesium silicate 14807-96-6 Zemex Industrial Minerals Extenders / Fillers >> Talc or Magnesium Silicate ADHESIVE SEALANT Pioneer 4319 is a platy Texas talc that finds wide use in industrial primers and exterior finishes. Pioneer 4319 is used in exterior oil and water emulsion paints, including traffic paint where it offers medium oil demand, higher solids loadings, and barrier protection. Pioneer 4319 can be used in filled rubber systems to significantly increase reinforcing properties, but also can be used in dry or aqueous systems on rubber surfaces as a parting agent. Pioneer 4319 can be used in a wide range of caulks, sealants, lubricants and adhesives, improving pre-cure modulus, strength and surface texture. It can also be used in textile applications due to its soft nonabrasive morphology, where it improves bulk and stiffness. Zemex’s Applications and Technical Service Group would be pleased to discuss your particular use and how the Pioneer Products and our other quality mineral products can solve your formulation and performance problems. Stable platy Texas talc (magnesium silicate). Used in caulks, sealants and adhesives. Improves pre-cure modulus, strength and surface texture.