RayFlex® 791

Self-Crosslinking Acrylic Emulsion

RayFlex 791 is an APEO-free, self-crosslinking acrylic emulsion designed to provide excellent alkali resistance on cementitious substrates. Coatings formulated with RayFlex 791 have very good tensile properties, efflorescence resistance, and low-temperature flexibility.

Key Features
  • Excellent alkali resistance
  • Well balanced tensile properties
  • Outstanding efflorescense resistance
  • APEO-free
  • MPI 113 capable
RayFlex® 791 Typical Physical Properties
Polymer Type Acrylic Emulsion
Weight Solids 60%
Viscosity (Brookfield Model RVT) 1160 cps, #4/100 rpm
pH 8.3
Tg (MDSC) -25°C
MFFT (ASTM D-2354) <0°C
Particle size (Mean) 0.26 microns
Surfactant charge Anionic
Weight per gallon 8.7 lbs./gal
Freeze thaw stability Do Not Freeze
Download Technical Data Sheet


If any product is defective in workmanship or materials, Specialty Polymers, Inc. will replace the product. The information contained in this Technical Bulletin is intended to be a guideline. It is offered in good faith, but without guarantee. We recommend users of the product perform their own testing to determine the suitability of the product in their application.