| 摘要 |
This invention relates to acetoxyalkyl cyanoacetate intermediates in the manufacture of copolymerizable, ultraviolet light absorber compounds, said intermediates having the formula: <IMAGE> where X is alkylene, C2-C17, unsubstituted or substituted with halo, cyano, alkyl, C1-C6, alkoxy, C1-C6 alkoxyalkyl, C1-C6 or alkoxyalkyleneoxy, C1-C6. The intermediates of this invention are used to make (2-cyano-3,3-diphenylacryloxy) alkylene acrylic acid esters and (2-cyano-3,3-diphenylacryloxy) alkylene ethylenic ethers in high yield.
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