Dispex GA40 Ammonium salt of an acrylic copolymer Ciba Colloidal stabilizers / Dispersing agents Polyolefins (PE, PP…) ADHESIVE >> Water-based DISPEX GA40 is derivative of a family of highly effective, low viscosity dispersing agents for water-borne coating systems. The products are especially suited for the dispersion of inorganic pigments. Compared with other dispersing agents DISPEX GA40 allows formulation of high-gloss / low pigment volume concentration coatings in addition to standard matt formulations. DISPEX GA40 is solution of a ammonium salt of an acrylic copolymer in water. It belongs to a family of products which are based on an acrylic copolymer. The copolymer is manufactured to a relatively narrow molecular weight distribution thus resulting in a consistent product quality with maximum effectiveness. DISPEX GA40 is ideal dispersing agents for a wide range of water-borne coatings. The special copolymer backbone is designed for complete compatibility with polypropylene and hexylene glycols used in high proportions in water-borne high gloss coatings to promote wet edge time. Use of DISPEX GA40 is especially recommended when high-gloss / low pigment volume concentration coatings are formulated. The neutralising alkali used in conjunction with the acrylic polymer can significantly impact the properties of the final coating. DISPEX GA40 releases ammonia during the drying process and therefore has little impact on water and alkaline resistance of the dry film. Use of DISPEX GA40 should be limited to pH 5-10.5 and temperatures lower than 70°C due to potential loss of volatile ammonia. Compared with inorganic dispersing agents, e.g. polyphosphate products, the organic polymer based DISPEX GA40 provides improved storage stability of both, the pigment dispersion and the formulated paint. There is little or no adverse reaction to high temperatures or pH changes as indicated in the graphs below, which are examples showing the accelerated effects in laboratory formulations. Solution of an ammonium salt of an acrylic copolymer in water. Used as a highly effective, low viscosity dispersing agent for water-borne systems. Possesses complete compatibility with polypropylene and hexylene glycols and little impact on water and alkaline resistance of the dry film. Provides improved storage stability of both, the pigment dispersion and the formulated adhesive, and little or no adverse reaction to high temperatures or pH.