High-performance ink pigments

In recent years, the vast majority of the pigment industry has faced unprecedented low profit margins and fierce competition. One of the outstanding parts is the high-performance pigment (HPP), a more expensive member of the pigment, with better tolerance properties.

HPP is an important part of the entire paint industry. It is estimated that the market for high-performance pigments will reach approximately 19,000 tons, or about 9% of the total organic pigment market. The sales of such pigments will reach US$1.2 billion, and the overall pigment market sales will reach US$4.2 billion. The HPP market is continuously growing.

Although the overall growth rate of the organic pigment market has matured to a certain degree, with an annual growth rate of 2%; it is still widely believed that the growth rate of high-performance pigments will be in the range of 4-5%. The market situation of HPP has been very optimistic. Lower interest rates in the past few years have increased the performance requirements of the automotive and construction industries, leading to an increase in HPP production.

What is HPP?

As mentioned earlier, HPP can give special properties to the final product.

David Dugan, Sales/Key Account Manager at Clariant Corporation, said, “High-performance pigments have high performance in the final application. This definition includes inorganic and organic pigments. As for performance considerations, three basic E: efficacy must be noted ( Technical performance); economical (the benefits to the customer); and ecological (environmental and non-toxic safety)."

Edwin Faulkner, director of high-performance pigments communications and regulatory affairs at Sun Chemical Corporation, said, “The three fundamental elements of HPP are performance excellence, application persistence, and high value-added economics for all parts of the supply chain. HPP is Those pigments that have excellent long-lasting properties. That is, they have good light, heat, humidity, organic solvents, water and detergent resistance."

Christopher Bridge, regional marketing manager for Imaging and Ink, Americas, Ciba Specialty Coatings Applications Division, said, “High-performance pigments are characterized by their high level of durability in end applications, and despite the relatively high price per unit weight, they are still due to product safety. It is accepted by people because of its high environmental value and user friendliness.” Typical properties of HPP include: high light resistance and weather resistance, chemical resistance in the final application, high thermal stability, Low solubility and low color shift in construction systems.

Dugan said, "Because HPP has high tinting strength, insolubility, thermal stability, and particularly excellent light and weather resistance, solvent resistance and bleed resistance, and low color shift, they are always applied preferentially. All applications where excellent lightfastness and weatherability are required, such as all outdoor applications such as automotive coatings, exterior coatings for homes, and outdoor signage, etc.. He pointed out that some of HPP's other notable performance characteristics include: fluorescence, luminescence, Thermochromic, photochromic and other 'effect' pigments. In some electro-optical colorants, functional colorants like controllable electrostatic properties pigments are needed.

HPP includes many kinds of pigments, including special phthalocyanines (blue and green), indanthrone, quinacridone, perylene, DPP (diketopyrrolopyrrole), special naphthol, carbazole violet, benzo Imidazolone, condensing azo pigments, metal complex pigments and isoindolinones.

Chris Whiston, pigment product manager for Toyo Color America, LLC, said, “High-performance pigments can be defined in terms of the reverse negation of non-azo pigments. With a few notable exceptions, they are polycyclic pigments, and the most common and famous are phthalocyanine pigments. A few notable exceptions are azo pigments including azomethine pigments, azo metal complexes, condensation azo pigments, and benzimidazolone pigments. High-performance pigments are often used in comparison with azo pigments. Has more light resistance, heat resistance, weather resistance, solvent resistance and color shift resistance."

Most high-performance pigments are polycyclic organic pigments, but this name can also cover some environmentally friendly inorganic pigments, such as bismuth vanadate type pigments. The types of organic pigments mainly include isoindolinones, condensed azo pigments, quinacridones, dioxazine pigments, diketopyrrolopyrroles, perylenes, and some higher grade naphthol and benzimidazole pigments. Benzimidazolone pigments mark the starting point for entry into high-performance pigments. Bisazobenzimidazolone pigments such as Pigment Yellow 180 and Pigment Orange 72 (benzimidazolone orange H4GL) have been actually developed for use in plastics. Pigment Yellow 180 is the choice of toner in digital printing and some special packaging ink pigments.

Another striking example of HPP is Pigment Violet 23, also known as carbazole violet, second only to phthalocyanine blue or phthalocyanine green pigment, which may be the most important high performance for almost any application in the world. One of the pigments. Pigment Violet 23 is a reddish color characterized by a very high coloring power, an unsurpassed bright color, and good light and heat resistance in almost all plastics.

Among the orange and red luster regions, the most famous and popular high-performance pigments are quinacridine, perylene, solansenine, and diketopyrrolopyrrole pigments, which have excellent light resistance and weather resistance. , High thermal stability and satisfactory color shift resistance. An outstanding class of high performance pigments are phthalocyanine blue and phthalocyanine green, which have excellent overall resistance properties as well as thermal stability and color shift stability.

HPP's main customers

Due to the improved performance of HPP, its cost is higher than traditional pigments. To a large extent, the classic lower-cost azo pigments can meet the needs of printing inks, so the use of HPP in this area is very limited. HPP is therefore used in applications where there are few cost factors, such as automotive, plastic, and inkjet printing.

Although the automotive industry is the main consumer of HPP, about 50% of HPP is used in the automotive sector, but the demand for HPP in the printing industry continues to grow. Dugan said, “The main customers of HPP pigments are the automotive coatings industry, the plastics industry, the non-pressure printing industry, and companies that produce packaging inks for high-quality demand.”

For printing, the need to improve the use of performance makes the use of HPP necessary. Bridge said, "All ink manufacturers have some relatively high unit price applications, where one or more key features must be improved. The main uses include outdoor use (traffic signs, decoration, fertilizer bags, gas station facilities) Or some indoor applications that require the necessary light performance, such as wall and floor coatings."

The printing ink industry uses HPP when it needs its properties. The most common uses are Red 122 (used as a substitute for Pigment Red 57 with insufficient light stability), Pigment Blue 16 and Blue 79 (used as a substitute for Pigment Blue 15 when copper content needs to be reduced), and various HPP yellows (used for resistance Chemical solvent-based inks; various HPP red and yellow (for laminated inks, especially flooring)
Various HPP red and yellow (specially used for metal decoration, screen printing, outdoor advertising and other light resistance and moisture resistance are very important occasions.)

Printing ink applications include, but are not limited to, packaging printing for vacuum packaging, outdoor printing such as signage, and products typically stored outdoors. Other uses of HPP include security inks, metal decorative inks, and electro-optical toners. An important application is the color filter of liquid crystal displays.

Bridge pointed out that HPP is more for printing on non-paper substrates. All printing processes use more or less high-performance pigments, but compared to the entire printing process, the offset printing process uses much less HPP because the usual substrate for printing is paper, which is very restrictive in the final application. Screen inks are used in signage and decorative layers and are now replaced by wide solvent-based inkjet inks that also use such pigments. Flexo printing is used for fertilizer bag printing. Gravure printing is more commonly used in wall and floor coatings. Offset is used for special high-end applications that require chemical resistance or small color shifts, mainly in label printing, or where the substrate is non-paper, such as certain credit cards or metal decorations.

HPP new products

Clariant has developed HPP Hostaperm H5G and Hostaperm Blue R5R for automotive coatings, and Novoperm THI Red 4G70 for industrial paints. According to Dugan, they can also be used for certain special ink applications.

Clariant's recent development has a thiazine (THI) pigment that is similar in molecular structure to the diketopyrrolopyrrole pigment and is yet another example of a high performance pigment with excellent properties. The company also developed Novoperm THI Red 4G70, a red pigment with clear opaque scarlet and excellent heat resistance, chemical resistance and lightfastness, and inkjet yellow 4G and inkjet magenta for inkjet ink coloring E02. In terms of toner, toner yellow 3G and toner magenta E02 have recently been developed.

Ciba's newly developed Ciba Croft Yellow LA has extremely high lightfastness and its main use is for decorative laminate floor coatings, especially for long-term exposure to sunlight. Ciba Cromfox Yellow 2RT is a yellowish isoindolinone pigment with a reddish color that is used in highly resistant solvent-based inks with high strength, gloss and rheological properties. Ciba also introduced a dimethyl quinacridone pigment, Ciba Croft Pink PT (SA), with improved strength and dispersibility. Sun Chemical introduced three R122 products with excellent dispersion, flow and light resistance: 228-6488/228-6832 for metal decorative and solvent-based packaging inks, and 228-8655 for water-based packaging inks. The company also added 279-5700 for laminated inks for its Y139 series.

Toyo introduced new indanthrone products (Lionogen Blue 6500 and Lionogen Blue 6510) surface-treated with PB 60s with excellent color matching, and introduced a phthalocyanine pigment (Lionol Green 6Y-600) which is very yellow Color saturation PG36 and quinophthalone (Catulia Magenta D), which is a kind of yellow PR122 that is easy to disperse, clean and bright. Two new dioxazine pigments are also introduced: VC for offset printing inks
6100 and VC 6195 for packaging inks, and Toyo PV23, the original technology of the above products.

in conclusion

The rising trend of high-performance pigment plates is greater than the overall organic pigment market, and its more reasonable prices reflect better investment returns and more advanced research and development. As a result, new products presented to the market will help ink manufacturers develop special ink products that benefit customers in the printing industry. As market demand for product performance and environmental protection increases, the market for these types of pigments will grow steadily so that users can find solutions with a wider range of applications.

Information Source: Coatings & Inks