Air Products and Chemicals, Inc.

Randall P Bright

Richard Henry Bott

E Chris Hornaman

Christopher Thomas Hable

Jayson C Vassallo

Thomas E Zeller

Mark T Phillips

Mortar formulations comprising a hydraulic cement and a PVOH stabilized acrylic latex or a spray dried redispersible powder made from the PVOH stabilized acrylic latex are disclosed. These include formulations suitable for use as tile mortars, patching mortars, EIFS base coats and grouts. An acrylic latex that, when formulated with hydraulic cement, has performance advantages over other latex resins in mortar, patch and exterior insulation and finishing systems. The spray dried, redispersible acrylic emulsion polymer that, when formulated with hydraulic cement, has comparable or better performance than a liquid latex in mortars and patches.

Poly(vinyl alcohol) stabilized acrylic polymer modified hydraulic cement

A process for making a spray dried redispersible polymer powder, especially a VAE copolymer powder, by spray drying a polymer emulsion containing a polyvinyl alcohol redispersant. A sufficient amount of the total polyvinyl alcohol redispersant is added to the polymer emulsion prior to spray drying and the remaining amount of polyvinyl alcohol redispersant is added as a dry powder to the spray dried polymer powder.

Redispersible polymer powders by redistribution of polyvinyl alcohol

A method for preparing a polymer powder which is redispersible in water by atomizing an aqueous non-polyvinyl alcohol stabilized polymer dispersion containing a dispersing aid consisting of vinyl pyrrolidone homopolymer.

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Allentown, PA, United States of America

Randall P Bright