VINNAPAS® 5023 L (VINNAPAS® RE 523 Z) is a copolymer powder of vinyl acetate and ethylene. It is dispersible in water and has good saponification resistance.
Compounds modified with VINNAPAS® 5023 L (VINNAPAS® RE 523 Z) exhibit improved adhesion, flexural strength in bending, deformability and abrasion resistance and are easier to process. VINNAPAS® 5023 L (VINNAPAS® RE 523 Z) can be combined to improve casein or synthetic plasticizing admixtures to produce self-leveling flooring compounds and screeds. VINNAPAS® 5023 L (VINNAPAS® RE 523 Z) produces very smooth surfaces that are free of surface voids. VINNAPAS® 5023 L (VINNAPAS® RE 523 Z) contains a fine mineral filler as an antiblocking agent. It is free of solvents, plasticizers and film-forming agents.
VINNAPAS® 5023 L (VINNAPAS® RE 523 Z) is a dispersible polymer powder in the medium Tg range, greatly enhances leveling, and generates very little emissions.
Typical applications for VINNAPAS® 5023 L (VINNAPAS® RE 523 Z) not only for blending with inorganic binders, such as cement, anhydrite, gypsum plaster and hydrated lime for the manufacture of self-leveling flooring compounds, wall troweling compounds, structural adhesives and repair mortars, but also as the exclusive binder for synthetic-resin-bound systems.
For the production of ready-mixed powders, such as dry mortars, adhesives and troweling compounds, blend VINNAPAS® 5023 L (VINNAPAS® RE 523 Z) with the other dry ingredients in appropriate equipment. Temperatures should not be allowed to rise excessively during mixing because otherwise the dispersible polymer powder could agglomerate and lead to the formation of small lumps of resin. The mortar or troweling compound is prepared for use by adding the recommended amount of water and mixing by hand or machine. Since hand mixing generates little shear force, we recommend allowing the fresh mortar to slake for 5 minutes and then stirring it again. This is usually unnecessary where mechanical mixers are employed.