| 摘要 |
This invention relates to a method of making in high yield light absorber compounds which are (2-cyano-3,3-diphenylacryloxy) alkylene acrylic acid esters having the formula: <IMAGE> where (Ar)1 and (Ar)2 are aromatic carbocyclic nuclei of the benzene and naphthalene series and are independently selected from phenyl or phenyl substituted with alkyl, halo, alkoxy, carboxy, carbalkoxy, cyano, acetyl, benzoyl, phenyl, alkyl phenyl, phenoxy phenyl, alkyl substituted phenoxy, or alkoxy phenyl substituted phenyl and naphthyl; X is alkylene, C2-C17, unsubstituted or substituted with halo, cyano, alkyl C1-C6 alkoxy C1-C6, alkoxyalkyl C1-C6, or alkoxyalkyleneoxy C1-C6; and Y is copolymerizable radical selected from acryloyl C3-C12 alkylacryloyl C3-C12, acryloxyalkyl C3-C12, acryloxyhydroxyalkyl and alkylacryloxyhydroxyalkyl C3-C12. The method comprises: (a) esterifying a hydroxyalkylene cyanoacetate with an acryloylhalide or acrylic acid to form a (2-acryloxyalkyl) 2-cyanoacetate intermediate, and, (b) condensing the intermediate directly with a benzophenone to provide the desired product.
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