A method of synthesis of esters of 3-hydroxy-4-benzoylphenoxyacetic acid is suggested.
A series of compounds are synthesized which effectively absorb UV light.
The compounds obtained show practically no antagonism in their combined use with antioxidants for the stabilization of polypropylene.
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Bugakova, L.P., Levin, P.I., Rozantsev, E.G. et al. Synthesis and properties of certain photostabilizers in the 2,4-dihydroxybenzophenone series. Russ Chem Bull 16, 1974–1976 (1967). https://doi.org/10.1007/BF00909594