Isabella Flores
Paint tubes have come a long way since the days of pig bladders and tacks. The invention of the tin paint tube in 1841 by John G. Rand revolutionised the art world, particularly for Impressionists like Monet, Pissarro, and Renoir, who could now paint en plein air. Today, paint tubes contain not just pigment but also a combination of binders, solvents, and additives. Paint manufacturers indicate the degree of transparency/opacity of their colours in various ways, from using a simple lettering system to employing icons like squares or wheels. Understanding these labels can help artists select and apply colours more effectively and give better long-term structural stability to their paintings.
| Characteristics | Values |
|---|---|
| Pigments | Cadmium red, ultramarine blue, cobalt, lead white, titanium dioxide |
| Opacity | Opaque, semi-opaque, semi-transparent, transparent |
| Lightfastness | Fade-resistant, non-fade-resistant |
| Permanence | Extremely permanent, permanent, moderately durable, fugitive |
| Additives | Defoamers, thickeners, surfactants |
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What You'll Learn
- Paint tube labels can be misleading, so it's important to understand the various codes and labels
- Paint tubes contain pigments, binders, solvents, and additives
- The paint tube was invented by John Goffe Rand, revolutionising the way artists work
- Paint tubes have different ways of indicating opacity, such as boxes, wheels, or lettering
- Lightfastness and permanence are important factors in paint tubes, affecting the durability of the paint
Paint tube labels can be misleading, so it's important to understand the various codes and labels
To understand this, we need to be aware of the difference between the terms 'paint' and 'pigment'. The pigment is what gives the paint its colour. It will derive either from a ground organic substance or a synthetic substance that is chemically produced.
There are several different types of information on a paint tube label. The brand or manufacturer's name will be printed on the label, and while the colour might be similar, there are usually some differences when it comes to the paint quality, properties, and characteristics. The colour name will give you an idea about the colour and what it will look like.
Another thing you might notice on a tube of paint is a series number. When a paint brand has paints separated into series, they are priced from cheapest at series 1 and get progressively more expensive. However, just because a paint is series 1, doesn’t mean that it’s low-quality paint. It means that the pigment in the paint is easier to acquire or manufacture than paints with a higher series number.
Some other things to look out for on a paint tube label include the Pigment Colour Index Number, which can help you decide whether to buy that tube of paint, and health and safety warning labels. True cadmium paints, for example, are carcinogenic and will have a warning label on them. While they are generally fine to paint with, they could have ill effects on your health if accidentally inhaled.
There are also various ways that paint manufacturers show the opacity of the paint inside the tube. Some brands, such as Amsterdam, have a square on the side of the tube. A black square denotes an opaque paint, a square with a diagonal line through it and the bottom half black means semi-transparent paint, and a clear square means it will be transparent.
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Paint tubes contain pigments, binders, solvents, and additives
Pigments are the colourful particles that give paint its hue. Different pigments have varying levels of transparency and opacity, which can affect the final appearance of the paint. For example, cadmium red and cadmium red hue may look similar in the tube, but they differ in intensity, mass tone, and opacity.
Binders are substances that help hold the pigments together and adhere them to a surface. Examples of binders include acrylic resin and vinyl resin, with the former being more common in higher-quality paints. The stability of the binder contributes to the overall permanence of the paint.
Solvents are liquids that carry the pigments and binders, allowing the paint to flow smoothly. Solvents are usually the most abundant component in paint tubes. They can also affect the drying time of the paint, with oil-based solvents taking longer to dry than water-based ones.
Additives are substances added to the paint to modify its properties. Some common additives include defoamers, which remove foam, and thickeners, which change the application and feel of the paint. Additives can also be used to improve the lightfastness of the paint, which is its resistance to fading caused by UV light.
The invention of the paint tube by John Goffe Rand in 1841 revolutionized the art world by providing a portable and long-lasting way to store paint. This allowed artists, particularly Impressionists, to paint outdoors and capture the beauty of natural light and the world around them.
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The paint tube was invented by John Goffe Rand, revolutionising the way artists work
The paint tube was invented by John Goffe Rand, revolutionising the art world and changing the way artists work forever. Rand was an American portrait painter and inventor, born in 1801 in Bedford, New Hampshire. He lived and worked in several bustling cities, including Boston, London, and New York.
Before Rand's invention, artists stored their oil paints in animal bladders, usually a pig's bladder sealed with string. This method was not only inconvenient but also caused the paint to dry out quickly. Rand's genius idea was to create a collapsible paint tube made of tin and sealed with a screw cap. This invention, patented on September 11, 1841, gave paint a longer shelf life, prevented leaks, and could be opened and closed multiple times.
The paint tube's portability allowed artists to leave their studios and paint en plein air, a practice embraced by the French Impressionists. For the first time, artists could easily transport their paints and work on finished oil paintings outside the confines of their studios, capturing the effects of natural light and the world around them. This freedom to paint outdoors and the convenience of being able to return to their work later without worrying about paint drying out enabled artists to create masterpieces that might not have been possible without Rand's invention.
While some argue that Impressionism cannot be solely attributed to the portability of paint tubes, the invention undoubtedly played a pivotal role in the movement's emergence. Jean Renoir, the son of Impressionist painter Pierre-Auguste Renoir, even stated that without paints in tubes, there would have been no Cézanne, Monet, Sisley, or Pissarro, highlighting the significant impact of Rand's invention on the artistic world.
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Paint tubes have different ways of indicating opacity, such as boxes, wheels, or lettering
Other manufacturers employ a lettering system, where transparent colours are marked with a 'T' and semi-transparent with an 'ST', while opaque colours are marked with an 'O' and semi-opaque with an 'SO'. Some brands may simply write out 'Opaque', 'Transparent', or 'Semi-Opaque' on their labels.
Additionally, a "lightfastness" rating system is used to indicate a paint's resistance to changing when exposed to light. This can impact the longevity of a painting, as colours can lighten, fade, darken, or turn grey over time. Different countries and manufacturers have their own systems for indicating lightfastness, such as the ASTM and Blue Wool systems.
It's important to note that not all manufacturers indicate opacity or transparency on their paint tube labels, and artists may need to refer to the manufacturer's website or charts to fully understand their specific system.
Furthermore, paint tubes may also contain other important information such as health warnings, the pigment colour index number, and series numbers which indicate the price band of the paint. The pigment colour index number helps identify the specific pigment used, and series numbers indicate the difficulty and cost of acquiring the pigment, with higher numbers typically indicating higher prices.
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Lightfastness and permanence are important factors in paint tubes, affecting the durability of the paint
When purchasing paint, it is important to consider the various terms and labels on the tube. Lightfastness and permanence are two such factors that affect the durability of the paint. Lightfastness refers to a paint's resistance to fading when exposed to sunlight and other forms of ultraviolet (UV) light. Paint that is lightfast will last longer without fading or changing. ASTM International (originally ASTM or American Society for Testing and Materials) provides a standard for lightfastness, rating paints as I (excellent), II (good), or III (poor). However, some companies use their own systems, such as a star rating system or a series of noughts and crosses. Therefore, it is important to consult the manufacturer's website to understand their specific system.
Permanence, on the other hand, is a more general category that encompasses not only lightfastness but also the paint's resistance to other atmospheric conditions and the chemical stability of the binder and pigment. While there is no universal standard for permanence ratings, companies like Winsor and Newton use a letter rating system, with AA indicating extremely permanent paint and C indicating fugitive paint.
The opacity of the paint is another factor that affects the durability of the paint. Opaque paints, denoted by a black square or the letter "O", will provide better coverage and hide underlying colours, while transparent paints, marked with a clear square or the letter "T", will allow underlying colours to show through.
When selecting paint, it is crucial to consider the lightfastness, permanence, and opacity ratings to ensure the paint meets your specific needs and will withstand the desired conditions. Some paints, like the Cadmiums, are known for their permanence and lightfastness, while others, like Quinacridone Magenta and Phthalo Green, are undergoing retesting to determine their lightfastness.
By understanding the various labels and ratings on a paint tube, artists can make informed decisions about the durability and longevity of their artwork, ensuring their creations stand the test of time.
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Frequently asked questions
Paint is made up of many components, but the three main ones are pigments, binders, and solvents.
Pigments are what give paint its colour. They can be made from a variety of materials, including minerals, earth, and synthetic chemicals.
Binders are what hold the pigments together and attach them to the surface being painted. Common binders include acrylic resin and vinyl resin.
Solvents are liquids that are used to dissolve the solids in the paint and adjust its consistency. They can be made from a variety of materials, including water and oil.
Other additives in paint include surfactants, defoamers, and thickeners, which are used to adjust the application and feel of the paint.
