prov:value
| - Examples of suitable macromolecular organic materials which can be colored with the compounds of the formula (I) according to the invention are vinyl polymers, for example polystyrene, poly-??-methylstyrene, poly-p-methylstyrene, poly-p-hydroxystyrene, poly-p-hydroxyphenylstyrene, polymethyl acrylate, polyacrylamide, as well as the corresponding methacrylic compounds, polymethyl maleate, polyacryl
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