Rohm&Haas has removed  Primal AC 33 since 2002 As the successor product , the manufacturer recommends SF-016 This product has greatly improved UV resistance and flexibility
Primal SF-016 is a pure acrylic dispersion , which has excellent weather resistance and excellent resistance to chalking and pigment -binding capacity. Primal SF-016 contains no solvents , formaldehyde and ammonia free, therefore odor and environmentally friendly.
Low viscosity and high solids content SF-016ER is exellent mortar and polychrome consolidant  pure or thinned with water / alcohol, also used as exceptional pigment  binder or acrylic medium

Minimum film temperature : 1 ° C
Solid content : 50 - 51%
pH: 8-9
Viscosity < 500 mPas