Safe and environmentally friendly pigment Yellow 139

In today's field of chemical pigments, the safety and performance of pigments have always been important aspects that attract much attention. Take C.I. Pigment Yellow 139 for example. It is also simply and directly called Pigment Yellow 139 and is also known as Red Light Yellow 139.

We know that previously there was a dye made from 3,3 '-dichlorobenzidine (DCB), which has been banned by the European Union due to some safety or other issues. This incident has sounded the alarm for the entire pigment industry, as DCB, a substance, has certain correlations in pigment manufacturing. Benzidine yellow pigments produced by DCB, due to their similarity to banned dyes and potential risks, are very likely to be banned in the near future as well.

Against such a backdrop, seeking alternative varieties has become an important task within the industry. And yellow organic pigments of the isoindolinoline type have come into people's view. This type of pigment has many extremely excellent application properties. Its colors are as bright as the delicate flowers blooming in the early morning, and the brightness is just like sunlight penetrating clear crystal. Moreover, the coloring intensity is very high, as if a small amount of pigment can release tremendous color energy. With these advantages, it is very likely to become an alternative variety to benzidine yellow pigments.

Next, let's elaborate on the technical indicators of pigment Yellow 139.

First, let's take a look at its appearance. It presents a red and yellow color, which has a unique visual impact, like the most intense red in a burning flame blending with the bright yellow.

In terms of color light, it is similar to the standard product, which means it has a very good performance in color accuracy and can meet various application scenarios with strict color requirements.

The tinting strength reaches 100±5% (compared with the standard product), which indicates that it is very stable and reliable in its ability to endow objects with color. Whether in large-scale production or small-batch customization, it can stably perform its coloring function.

Heat resistance ≥250°C, which is a rather excellent indicator. In many high-temperature environments, such as the surface coating of heating equipment in some industrial production processes, or the coating of components near car engines that need to withstand high temperatures, it can maintain its color stability and will not change color or fade due to high temperatures.

The lightfastness reaches level 8, which means that it can maintain the vividness of the color very well under long-term direct sunlight. Just like outdoor billboards, even after being exposed to wind and sun, they can still maintain their original color and will not lose their luster due to the ultraviolet rays of the sun.

Its weather resistance is between 4 and 5 levels. Whether facing the invasion of wind and rain or the erosion of various complex chemical components in the atmosphere, it has a strong resistance capacity. For instance, the coating on the exterior walls of buildings by the seaside or the coloring of outdoor facilities in areas with relatively severe industrial pollution can all maintain a good color state for a long time.

It can resist acid and alkali up to level 5. In some environments where it may come into contact with acid and alkali substances, such as the coloring of instrument casings in chemical laboratories, or in some special industrial production environments, although it cannot completely resist the corrosion of strong acids and alkalis, it can still maintain its own color integrity to a certain extent.

Overall, in terms of performance, it has bright colors and strong tinting power. This powerful tinting power is like a magic key to colors, capable of easily dyeing objects with vivid hues. It has excellent sun resistance, which further emphasizes its advantages in outdoor applications. Moreover, it has good solvent resistance and no migration, which means that its color will not migrate or spread in different chemical solvent environments, ensuring the accuracy and stability of the color.

Let's take a look at its uses again. The range is quite extensive. It can be used in ink. Whether it is book printing or packaging printing, it can provide bright colors for text and patterns. In terms of paint, whether it is the wall paint for interior decoration or the protective paint for outdoor buildings, it can play a role. For plastic resins, whether it is common plastic products or some special-purpose engineering plastics, it can add color to them. In the field of coating printing, it can make the printed colors more lasting and vivid. In terms of coloring plastic products, whether it is toys or some industrial plastic parts, they can all become rich in color because of it.

In terms of packaging, a variety of options are provided, including 10KG and 25KG packages, and packaging can also be customized according to the special requirements of users. This reflects respect and satisfaction for user demands. Whether it is the small-batch demands of small enterprises or the large-scale production demands of large enterprises, they can all be properly arranged.

Pigment Yellow 139 is particularly suitable for red and yellow applications in coatings, plastics and inks. Its particle size distribution is different, which will show different color characteristics. The hue Angle can be 78, 71 or 66 degrees depending on the average particle size. The non-transparent type presents a stronger red light. For example, when the specific surface area of Paliotol Yellow 1970 is 22m2/g and that of L2140HD is 25m2/g, a more intense red light effect can be presented. Moreover, increasing the concentration does not affect the glossiness. This feature makes it very suitable for some application scenarios that require high color concentration but cannot sacrifice glossiness. It also has excellent light and weather fastness, which is very important for products that are used outdoors for a long time. It can also be combined with inorganic pigments to replace chrome yellow. Due to some environmental or performance limitations of chrome yellow, the substitutive ability of pigment Yellow 139 is particularly valuable. In the field of high-end coatings, such as automotive repair paint, which has extremely high requirements for color and good lightfastness, the lightfastness in alkyd melamine resin can reach grade 7-8 (1/3SD). Color resistance in soft PVC is of great significance for the color stability of soft PVC products. HDPE (1/3SD) can withstand a temperature of 250℃ and still maintain color stability in such a high-temperature environment. It is suitable for coloring the original slurry of polypropylene, unsaturated polyester and PUR. In terms of high-end inks, lightfastness level 7 (1/3SD) can ensure that the inks maintain good color effects during long-term use or display.