Preparation of acrylic polyols

摘要

A method for making a low-yellowing acrylic polyol is disclosed. The acrylic polyol has an APHA color increase less than 100% when it is mixed with 1.5 wt % of an UV light stabilizer. The method comprises free radically copolymerizing an allylic alcohol, an alkyl acrylate or methacrylate, and optionally a vinyl comonomer selected from the group consisting of vinyl aromatic, vinyl ethers, and vinyl esters in an initiator concentration less than or equal to 0.8 wt % of the total amount of monomers.