Perylenetetracarboxylic acid diimides having long-chain radicals containing carbonyl groups
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United States of America Patent
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Apr 14, 1992
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app pub date -
Sep 24, 1990
filing date -
Mar 13, 1987
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Abstract
Perylene-3,4,9,10-tetracarboxylic acid diimides of the formula I ##STR1## in which R is a linear or branched alkylene, alkylenecycloalkylene or cycloalkylenealkylene radical which has at least 15 C atoms and which is interrupted by one or two --COO--, --OOC--, --CONH-- and/or --NHCO--groups, and Z is hydrogen, hydroxyl or a --COOH group. Perylene diimides of this type are excellently suitable for coloring polyolefins. In this regard, they are particularly distinguished by their low tendency to bloom. They are also very suitable for coloring engineering plastics, in which they produce fluorescent colorations having a high fluorescence and excellent fastness to heat, light and weathering.
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