BAYHYDUR ULTRA 304

BAYHYDUR ULTRA 304 is a hydrophilically modified, aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI). It is used as a hardener/binder component for high-quality waterborne polymer dispersions and as an additive to improve the property level of waterborne systems. BAYHYDUR ULTRA 304 has good compatibility with commonly used solvents and can be easily emulsified in the aqueous phase. It is mainly used as the crosslinking partner for waterborne polyol binders and as a crosslinker for largely pH-neutral waterborne polymer dispersions. The addition of 3 - 10 % BAYHYDUR ULTRA 304 is recommended to crosslink adhesive dispersions containing 40 - 60 % polymer. BAYHYDUR ULTRA 304 provides benefits such as improved mechanical strength, flexibility and adhesion when used to formulate durable and long lasting waterborne coatings and adhesives suitable for construction applications.