Violet Pigments
When asked on the Facebook group what choices of violet pigments Virgil would use, he answered: cobalt violet, manganese violet, ultramarine violet, or mixtures of cobalt blue or ultramarine blue and a lightfast purple-red like PV 19 or Mars violet, depending on the desired chroma. Lower chroma violets can be made with red and black plus white.
A Facebook user asked how Virgil would mix an opaque light purple. His answer: “Without adding a white, you won’t be able to get a light purple opaquely, so the only other way would be to apply a transparent purple thinly over a white underlayer. That creates a different optical effect that works better for some things than for others, so it might not be as good an option as adding lead white or ceruse, depending on what you’re trying to do.”
From Natural Pigments’s article, “Color Notes: Ultramarine Violet in Painting“: “Works of art rarely contained the color violet until the Impressionists in the mid-19th century. A study of the color violet has shown it to be present in only 2% to 4% of the artworks created before the early 1860s. It quickly became very popular soon after that date, rising from 36.5% to 47.9%. What explains the steep increase in the use of violet in paintings in the early 1860s? While the introduction of cheap purple and so-called violet pigments in the 1860s made its use more economical for artists, this alone does not explain the trends. According to the same study of the color violet, an increased sensitivity to violet colors due to the continuous evolution of the human visual system offers an alternative explanation. In addition, the contemporary developments in color theory and their adoption by Impressionist painters may almost naturally have led to an increase in the use of violet from 1863 onwards.”
Mars Violet
Pigment Number: PR101
Mars violet is a synthetic red iron oxide described as being a subtle, deep bluish-red that makes lavender tints. It is similar to Indian Red and is often called that name or Caput Mortuum (“dead head”).
Here’s a historical note from Natural Pigments: “Mars pigments with a violet hue were first produced by making mars yellow. This compound was then calcined and oxidized to form red shades of iron oxide(III). It is believed that the first pigments offered as mars violet were the natural mineral hematite, which is a red iron oxide earth pigment. This was then calcined and oxidized to produce deeper shades and ground more coarsely than the brighter red shades. Synthetic iron oxide pigments of deep red and violet hues are produced today by the Penniman-Zoph process. When synthetic iron oxide pigments are produced at larger particle sizes, 1–5 microns, they appear closer to violet hues of red. Smaller particle sizes, 0.1 to 0.2 microns, produce brighter yellow shades of red.
The Latin caput mortuum (meaning “dead head,” and variously spelled caput mortum or caput mortem) is the name given to a purple variety of hematite iron oxide pigment. This name may have come from alchemical usage since iron oxide is the oxidized residue (caput mortuum) or rust. It was initially a byproduct of sulfuric acid manufacture during the seventeenth and eighteenth centuries. It was possibly an early form of the copperas process used to manufacture Venetian red and copperas red.”
Virgil’s Assessment
Virgil uses Natural Pigments version of Mars Violet under the Rublev brand called “Mars Crimson”.
Technical Links
From CAMEO: Synthetically prepared violet color iron oxide pigment. Mars violet is a permanent pigment with good tinting strength and good oil-drying properties.
Fluorescent Purple
Fluorescent pigment is a type of colourant that produces intense, bright colours that glow under ultraviolet (UV) light however also exhibit a bright day glow effect. It is commonly used in a variety of applications, including safety equipment, signage, artwork, and fashion.
Fluorescent pigment is made up of particles that contain special fluorescent dyes or pigments. These dyes or pigments are designed to absorb energy from UV light and then emit it in the form of visible light, creating a glowing effect. This effect is sometimes referred to as “black light” or “neon” because the colours are so bright and vivid.
Fluorescent pigment is available in a wide range of colours, including pink, green, orange, yellow, and blue. It is often used to create high-visibility signs and markers, such as safety cones, traffic signs, and emergency exit signs. In the fashion industry, fluorescent pigment is often used in clothing and accessories to create bold, eye-catching designs.
One of the key benefits of fluorescent pigment is its ability to stand out even in low-light conditions. This makes it ideal for use in high impact design work and safety equipment, as it can help to increase visibility and reduce the risk of accidents. However, it’s important to note that fluorescent pigment can fade over time when exposed to sunlight or other sources of UV radiation. To maintain its brightness and intensity, it should be stored and used in a way that minimizes exposure to UV light.
Fluorescent Pigments have the following properties:-
Medium Hiding Power
Excellent Chemical Resistance
Medium Light Fastness
Excellent Physical Stability
Fluorescent Effect
Excellent Brightness
Non Toxic
Fluorescent Pigments can be used in the following applications:-
Coatings including Spray Paints and removable Coatings
Cosmetics
Graphic Arts
Plastics
Industry
PURPLE PIGMENT
Purple pigment is a chemical preparation that is compressed into a powder from the purple colorants from iron oxide or from different organic chemical elements to mix the purple color for the product.
I. PIGMENT
Purple pigment is a typical pigment.
Industrial pigments are chemical preparations, compressed into a powder from colorants. They have high dispersibility and insolubility in the dispersing medium, and are used by mixing with solutions such as paints, resins . to color the product.
Currently, there are many types of industrial colors produced in different forms: powder, wax, water . but the powder form is still preferred because it has many outstanding advantages such as:
– Ease of use : Because it is in powder form, when using it, it is only necessary to mix it with the coloring product without complicated preparation, without too much expertise to perform this step.
– Easy to store and transport : Just store the pigments in plastic and glass containers, keep in a dry place, protected from light. The product is very difficult to contaminate impurities when compared to other types such as wax or water.
– Cheap price: Among industrial colors, pigment has the cheapest price.
II. PURPLE PIGMENT
Purple pigment is a chemical preparation that is compressed into a powder from the purple colorants from iron oxide or from different organic chemical elements to mix the purple color for the product.
III. CHARACTERISTICS OF PURPLE PIGMENT
Purple pigment has many specific characteristics:
– Can be mixed to make purple color with different weights and color gamut
– Create and preserve color for long-term products
– Save costs for the production process
– Create quality products thanks to the chemical purity of the pigments
– Durable to light
– Increase the transparency of the product
IV. APPLICATION OF PURPLE PIGMENT
Purple pigment has many applications in plastic industry.
Typical industrial pigments in the plastics industry are used in the manufacture of plastic products, typically:
+ Producing plastic bags, foam bags, glossy bags
+ Belt production: PP, PET,
+ Producing HDPE water pipes
+ Production of imitation rattan HDPE, LDPE
+ Manufacture of injection molding products: PS, PC, ABS
Sunrise Colors Vietnam is proud to provide customers with the highest quality masterbatch, additives with outstanding physical and chemical properties suitable for use in various plastic production technologies. With many years of experience in the plasticization industry, and a team of highly specialized staff and engineers, modern machinery and equipment system, high quality input materials, we are always a trustful choice of customers and a reputable partner in the domestic and international market.
