AQUEOUS POLYURETHANE HYBRID COMPOSITIONS

摘要

Waterborne aromatic urethane-acrylic hybrid or composite compositions are disclosed that are low or free from N-methyl pyrrolidone and generally free of volatile organic solvents in their preparation are disclosed. The use of ethylene glycol monoalkyl ether or propylene glycol monoalkyl ethers in preparing the dispersion is taught. The use of ketone functional oligomers to improve the final dispersion quality is taught. The use of acrylate monomer(s) to reduce the viscosity of the prepolymer is taught.