Cymel 1133 Methoxymethyl, butoxymethyl melamine-formaldehyde resin Cytec Crosslinking / Coupling / Curing Agents >> Amine >> Melamine-formaldehyde Acrylic/Acrylate Resins Alkyd Resins Cellulosic Resins Epoxy Resins Polyester Vinyl Coatings >> Solvent-Free/ High-Solids Automotive OEM >> Top coats Automotive refinishing >> Enamels Metal Soluble in alcohols, esters, ketones, glycols and glycol ethers Insoluble in water CYMEL 1133 resin is a high-solids methoxymethyl, butoxymethyl melamine-formaldehyde resin recommend-ed as a crosslinking agent for polymers and resins con-taining hydroxyl,carboxyl or amide functionalities. CYMEL 1133 resin is especially recommended for auto-motive top-coat finishes and general metal finishes requiring improved durability and resistance properties. CYMEL 1133 resin is a versatile crosslinking agent for a wide range of polymeric materials containing carboxyl, hydroxyl or amide groups such as epoxy resins, alkyd and polyester resins, certain types of acrylic and vinyl resins and cellulosics. Highly alkylated, CYMEL 1133 resin is an efficient crosslinking agent for hydroxyl, carboxyl and amide func-tional polymers. The crosslinking reaction follows the reaction pathway for specific acid catalysis and requires an acid catalyst with pKa value of <1. Strong acids, which include the mineral acids and the organic sulfonic acids such as CYCAT ® 2 4040 catalyst, CYCAT ® 600 cat-alyst and CYCAT ® 500 catalyst, are the most widely used catalysts for systems using CYMEL 1133 resin. Highly alkylated, high-solids methoxymethyl, butoxymethyl melamine-formaldehyde resin. Used as a versatile crosslinking agent for polymers and resins containing hydroxyl, carboxyl or amide functionalities in automotive topcoat finishes and general metal finishes. Provides improved durability and resistance properties. Gives compatibility with epoxy resins, alkyd and polyester resins, certain types of acrylic and vinyl resins and cellulosics.