If polymer precipitation (turbidity) is found during unloading, does the supplier provide on-site technical diagnosis and emergency buyback services? What is the chemical structure of hydroxypropyl acrylate (HPA)? How does it provide crosslinking activity for polymer systems?

In high-performance automotive coatings, how does HPA improve the scratch resistance and chemical resistance of the coating film compared to other monomers?

What is the typical isomer ratio of 2-hydroxypropyl and 1-hydroxypropyl isomers in HPA? Does this ratio affect reactivity?

What is the glass transition temperature ($T_g$) of HPA? What kind of flexibility does it exhibit during film formation?

What is the skin irritation rating of HPA? Is it a restricted substance under the Montreal Protocol or any specific environmental list?

Besides coatings, what role does HPA play in the manufacture of hydrophilic contact lens materials?

How significant is the risk of self-polymerization of HPA at room temperature? Why do light and moisture accelerate its deterioration?

What are the specific differences in hydrolysis resistance and hydrophobicity between hydroxypropyl acrylate (HPA) and hydroxyethyl acrylate (HEA)?