Mercolan RA-40 preparations are ideal dispersing agents for a wide range of water-based coatings. They can be used as supplied.
The neutralizing alkali used in conjunction with the acrylic polymer can significantly impact the properties of the final coating. Mercolan RA-40 releases ammonia during the drying process and therefore has little impact on the resistances to water and alkali of dry film.The use of Mercolan RN- 40 should be limited to pH 5 – 10.5 and temperatures lower than 70 °C due to potential loss of volatile ammonia.
Recommended dosage for this product is generally advised as 0.5–2.0 % on total pigment weight but it is strongly recommended to run trials before final usage.