发明授权
US5387264A Method for dyeing or coloring organic macromolecular substance by using coumarin compound or coloring material 失效
使用香豆素化合物或着色材料对有机高分子物质进行染色或着色的方法

Method for dyeing or coloring organic macromolecular substance by using
coumarin compound or coloring material
摘要:
The invention discloses a method for dyeing a hydrophobic fiber, in particular, a polyester fiber in an extremely brilliant yellow or orange with fluorescence, a method for coloring, for example, a polystyrene resin or a polyacrylate resin in a brilliant yellow or orange, and a coloring material therefore.A method for dyeing a hydrophobic fiber and a method for coloring an organic macromolecular substance characterized by using a coumarin compound represented by the general formula: ##STR1## wherein R.sub.1 and R.sub.2 independently represent each a hydrogen atom or an alkyl group having 1 to 4 carbon atoms;and a coloring material containing the coumarin compound are disclosed.
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