有机颜料和染料有什么区别?
有机颜料与染料的不同之处在于,它们与被染物体之间缺乏亲和力。只有通过粘合剂或成膜物质将有机颜料附着在物体表面或融入物体内部,才能着色。生产有机颜料所需的中间体、设备和合成工艺与染料生产相似,因此有机颜料通常是在染料行业内生产的。
有机颜料用于何处?
与无机颜料相比,有机颜料通常着色力强,更容易研磨和分散,不易沉淀。它们还能产生更鲜艳的色彩。不过,它们的耐光性、耐热性和耐候性往往较低。有机颜料常用于油墨、涂料、化妆品、橡胶制品、塑料、文具和建筑材料等材料的着色。
按结构分类:
(1) Azo pigments account for 59%
(2) Phthalocyanine pigments account for 24%
(3) Triarylmethane pigments account for 8%
(4) Special pigments account for 6%
(5) Polycyclic pigments account for 3%
如何识别有机颜料?
Organic pigments offer vibrant colors and strong tinting power. They also have low density and are non-toxic. However, some varieties are often less resistant to light, heat, solvents, and migration than inorganic pigments. While the variety of colors is endless and vibrant, there are inherent connections between them. Each color can be defined by three parameters: hue, value, and saturation. Hue is the characteristic that distinguishes one color from another. It is determined by the chromatographic composition of the light source and the perception of the wavelengths emitted by the surface of an object to the human eye. It distinguishes between red, yellow, green, blue, and violet. Value, also known as brightness, is a characteristic value that indicates the degree of lightness or darkness of an object’s surface. By comparing the value of various colors, we can distinguish between bright and dark colors.
Organic pigments encompass a variety of chemical families and cover a wide range of properties. Generally speaking, organic pigments are primarily used for applications requiring high tinting strength and vibrant hues, while inorganic pigments are primarily used for applications requiring high opacity.
We can distinguish three main categories of organic pigments: polycyclic; azo (monoazo and disazo); and metal complexes. Within each category, both general-purpose and high-performance pigments are available.
不同有机颜料颜色的特点:
黄色






I hope reading this article will help you understand pigments more easily!
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Related product references: For formulation review or sourcing comparison, see CHLUMIUV 360 和 CHLUMIUV UV-1577.