RayRez 256

Styrene Acrylic Emulsion

RayRez 256 is a non-film forming polymer ideal for use as a flexographic and rotogravure printing ink vehicle. It is a cost effective, large particle size polymer, ideal for use with kraft paper or paperboard. Inks formulated from RayRez 256 have high opacity, good pH stability, fast dry and excellent transfer for paper and paperboard applications.

Key Features
  • High opacity
  • Good pH stability
  • Fast dry and is cost effective
RayRez 256 Typical Physical Properties
Polymer Type Styrene Acrylic Emulsion Polymer
Weight Solids 45 – 47%
Viscosity (Brookfield Model RVT) 1200 – 1800 cps, #3/100 rpm
pH 9.0 – 9.5
Tg (MDSC) 108°C
MFFT (ASTM D-2354) 90°C
Particle size (Mean) 0.16 – 0.50 microns
Weight per gallon 8.72 lbs/gal
Freeze thaw stability Do Not Freeze
RayRez 256 Typical Performance Properties

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.