Ultra fine calcium carbonate Omyabond 120

Redispersable Powder Tile Mortar

Adhesives Formulation

Applicable Type

Waterborne Adhesives

Applicable Base Polymer

Vinyl Acetate Ethylene Copolymers (VAE) , Ethylene Co-terpolymers - Solids (EVA, EMA)

Applicable Industrial Sectors

Buildings & constructions

Applicable Base Polymer Properties

Dow Construction Chemical Latex Powder (DLP) 212 is a free flowing, redispersible white powder obtained by spray drying of an aqueous vinyl acetate-ethylene-VeoVa-copolymer dispersion. It offers all the advantages of a free-flowing powder additive such as ease of transportation, storage and handling. DLP 212 Redispersible Latex Powder can be used in a variety of applications in the construction industry to improve key properties of cement and gypsum based formulations.

Both polyvinyl alcohol and vinyl acetate-based (VA) are subjected to hydrolyze in the presence of water. To protect these organic bonds, they are copolymerized with hydrophobic polymer usually with ethylene or vinyl versatate (VeoVa).

Typical Formulation Ingredients

Phase

Ingredient

Parts by weight

Portland cement, Type II-V

xxxx

Filler (silica sand 50-100 mesh, 150-300µm)

xxxx

Calcium carbonate

xxxx

Calcium formate

xxx

Hydroxyethyl methyl cellulose (viscosity of 15,000 mPa·s)

xxxx

Water demand

Processing

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Resulting Properties

Polymer latexes are generally added to mortar or concrete materials before or during mixing for the purpose of improving workability or physical properties once the mixture sets. Cured mortars modified with polymeric emulsion have excellent adhesion to various substrates. The polymer is particularly beneficial in cementitious applications where flexibility is needed, such as in ceramic tile adhesives over flexible substrates and cementitious mortars applied in a thin section.

Economical cement based tile adhesive
No sagging was observed on mortars prepared with VA/VeoVa or EVA-based RDF.
The measured viscosities were 76,000 and 70,000 mPa s, indicating that workability does not change with different types of polymeric powdered resin.

Tips and Tricks

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