Cymel 615 N-butoxymethyl methylol melamine resin Cytec Crosslinking / Coupling / Curing Agents >> Amine >> Melamine-formaldehyde Acrylic/Acrylate Resins Alkyd Resins Polyester n-Butanol Soluble in alcohols, esters, ketones and aromatic hydrocarbons Slightly soluble in aliphatic hydrocarbons Insoluble in water CYMEL 615 resin is a butylated melamine formaldehyde resin with a medium degree of alkylation and a relatively high molecular weight. It has good compatibility with a range of backbone polymer resins and is widely used, mainly in combination with alkyd resins in general industrial stoving formulations. CYMEL 615 resin does not require the addition of an acid catalyst to the formulation to obtain effective cure at normal baking conditions. The acidity on the primary film former is usually sufficient to initiate the curing process. The cure can be additionally catalyzed by weak organic or inorganic acids, such as CYCAT 296-9 catalyst, which has proved to be very effective for these systems. Recommend levels are 1.0-2.0% on total resin solids for baking schedules of 110°C -150°C for 15 to 20 minutes. CYMEL 615 resin is a very effective crosslinking agent for backbone polymer resins containing hydroxyl, amide and, to some extent, carboxyl functional groups, such as alkyd, polyester or acrylic resins. CYMEL 615 resin has a medium reactivity and a high tendency for self-condensation. Although the optimum level of CYMEL 615 resin in a given formulation should be determined experimentally, ratios between 25% to 35%, based on resin solids, often are most effective in a range of polymer backbone resins. Butylated melamine formaldehyde resin. Used as a very effective crosslinking agent for backbone polymer resins containing hydroxyl, amide and, to some extent, carboxyl functional groups, such as alkyd, polyester or acrylic resins. Offers medium degree of alkylation, relatively high molecular weight, good compatibility with a range of backbone polymer resins, medium reactivity and a high tendency for self-condensation.