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Nepheline syenite as the smart alternative to crystalline silica fillers in silicone elastomers

by S.P. Van Remortel and K.W. King, Covia Holdings LLC

Nepheline syenite is a silica deficient functional filler and additive widely employed in a variety of polymers, adhesives, coatings, inks and colorant applications. Micronized sizes are valued for purity of color, gloss control, antiblocking in polyolefin films and coatings, and ease of dispersion, with low viscosity build, abrasion and superior weather resistance.

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