Dilute RWL-201 Latex with water and adjust to a pH of 7.0 to 7.5 with 28% ammonium hydroxide (Precaution: do not raise pH of highsolids RWL-201 latex above 7.5). Add other ingredients and stir for 1/2 hr. The pH is adjusted to 8.0 to 8.5 with 28% ammonium hydroxide.