The new nomenclature classifies the Bayhydrol range according to the chemical-physical base properties to maximize transparency and clarity. In this system:
• U stands for hydroxyfunctional polyurethane dispersions (PUD);
• UH stands for high-molecular-weight polyurethane dispersions (PUD);
• UV stands for radiation-curing polyurethane dispersions;
• A stands for hydroxyfunctional polyacrylate dispersions (PAC);
• AH stands for high-molecular-weight polyacrylate dispersions (PAC);
• UA stands for polyurethane/polyacrylate hybrid dispersions (PUR/PAC);
• E stands for polyester dispersions (PES); and
• B stands for polybutadiene-based copolymer dispersions.
UH-grade polyurethane dispersions can be used nearly universally for the formulation of all common coating systems. OH-functional PUR (grade U) and PAC dispersions (grade A) are also commonly used in combination with hydrophilic or hydrophobic polyisocyanates for the production of waterborne, two-component coating systems. Corresponding one-component systems can be formulated using the AH range of new high-molecular-weight primary dispersions and the innovative PUR/PAC hybrid systems bearing the UA labeling. Finally, the E-grade polyester dispersions join the polyurethane dispersions in playing an important role in one-component stoving coatings.