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WACKER Develops New Dispersible Polymer Powder for Challenging Tile Adhesives

May 21, 2014

WACKER has developed a novel
dispersible polymer powder for modifying cementitious and
gypsum-based dry-mix mortars. VINNAPAS 8620 E is based on
a terpolymer of vinyl chloride, vinyl acetate and ethylene, and is
ideal for the formulation of high-quality, low-emission tile
adhesives. In the end product, the new dispersible polymer
powder ensures a long open time and enhanced flexibility
combined with excellent tensile adhesion strength, even after
water or freeze/thaw conditions. With VINNAPAS® 8620 E in the
formulation, it is thus even possible to reliably bond modern
large-format or very thin tiles, and porcelain or natural-stone

The new VINNAPAS 8620 E is a dispersible polymer powder based
on a novel vinyl chloride-vinyl acetate-ethylene-terpolymer for
modifying modern cementitious and gypsum-based dry-mix mortars,
particularly for tile adhesives. VINNAPAS 8620 E ensures that tile
adhesives adhere excellently to a broad range of different surfaces,
including difficult ones such as fired tiles with high densities and
natural-stone products – even after heat, water or freeze/thaw
conditions. The dispersible polymer powder was specifically
developed for the formulation of sophisticated tile adhesives of
categories C2E or C2ES1 and C2ES2 as per EN 12004 that feature
an extended open time and high flexibility. It thus offers users
additional formulation reliability.

Alongside exceptional product and processing properties,
VINNAPAS 8620 E also exhibits good environmental compatibility,
because the product is free of plasticizing additives and thus makes it
possible to formulate low-emission tile adhesives.

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