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Acrylic paint

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A blob of red acrylic paint shaped like a slug glistens as it rests against a white surface with a small blob to its upper left.
Red acrylic paint squeezed from a tube
Red paint tube is squeezed by hand over previous line of paint on dark border.
Example of acrylics applied over another color
Two paintings (portrait orientation) are side by side with the only marks being thick lines that terminate with a sizeable dot of blue, yellow, or red. The left one has lines vertical/horizontal, and the right one has lines diagonally.
Experimental pictures with "floating"[1]acrylic paint

Acrylic paintis a fast-dryingpaintmade ofpigmentsuspended inacrylicpolymeremulsionand plasticizers, silicone oils, defoamers, stabilizers, or metal soaps.[2]Most acrylic paints are water-based, but becomewater-resistantwhen dry. Depending on how much the paint is diluted with water, or modified with acrylic gels, mediums, or pastes, the finished acrylic painting can resemble awatercolor,agouache,or anoil painting,or it may have its own unique characteristics not attainable with other media.

Water-based acrylic paints are used aslatexhouse paints, as latex is the technical term for a suspension of polymer microparticles in water. Interior latex house paints tend to be a combination ofbinder(sometimes acrylic,vinyl,PVA,and others),filler,pigment,andwater.Exterior latex house paints may also be aco-polymerblend, but the best exterior water-based paints are 100% acrylic, because of its elasticity and other factors. Vinyl, however, costs half of what 100% acrylic resins cost, andpolyvinyl acetate(PVA) is even cheaper, so paint companies make many different combinations of them to match the market.[3]

History

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Otto Röhminventedacrylic resin,which was quickly transformed into acrylic paint. As early as 1934, the first usable acrylic resin dispersion was developed by German chemical companyBASF,and patented byRohm and Haas.The synthetic paint was first used in the 1940s, combining some of the properties of oil and watercolor.[4]Between 1946 and 1949,Leonard BocourandSam Goldeninvented a solution acrylic paint under the brandMagna paint.These weremineral spirit-based paints.

Water-based acrylic paints were subsequently sold aslatexhouse paints.[3]

Soon after the water-based acrylic binders were introduced as house paints, artists and companies alike began to explore the potential of the new binders.Diego Rivera,David Alfaro Siqueiros,andJosé Clemente Orozcowere the first ones who experimented with acrylic paint. This is because they were very impressed with the durability of the acrylic paint. Because of this, artists and companies alike began to produce Politec Acrylic Artists' Colors in Mexico in 1953.[5]According toThe Timesnewspaper,Lancelot Ribeiropioneered the use of acrylic paints in the UK because of his "increasing impatience" by the 1960s over the time it took for oil paints to dry, as also its "lack of brilliance in its colour potential." He took to the new synthetic plastic bases that commercial paints were beginning to use and soon got help from manufacturers likeICI,Courtaulds,andGeigy.The companies supplied him samples of their latest paints in quantities that he was using three decades later, according to the paper. Initially, the firms thought the PVA compounds would not be needed in commercially viable quantities. But they quickly recognised the potential demand and "so Ribeiro became the godfather of generations of artists using acrylics as an alternative to oils."[6]

In 1956,José L. GutiérrezproducedPolitec Acrylic Artists' Colorsin Mexico,[7][8]and Henry Levison of Cincinnati-based Permanent Pigments Co. producedLiquitexcolors.[9][10]These two product lines were the first acrylic emulsion artists' paints,[11]with modern high-viscosity paints becoming available in the early 1960s. Meanwhile, on the other side of the globe, 1958 saw the inception of Vynol Paints Pty Ltd (now Derivan) in Australia, who started producing a water-based artist acrylic called Vynol Colour, followed by Matisse Acrylics in the 1960s.[12]Following that development,Goldencame up with a waterborne acrylic paint called "Aquatec".[13]In 1963, George Rowney (part ofDaler-Rowneysince 1983) was the first manufacturer to introduce artists' acrylic paints in Europe, under the brand name "Cryla".[14]

Painting with acrylics

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Acrylic painters can modify the appearance, hardness, flexibility, texture, and other characteristics of the paint surface by using acrylic mediums[15]or simply by adding water. Watercolor and oil painters also use various mediums, but the range of acrylic mediums is much greater. Acrylics have the ability to bond to many different surfaces, and mediums can be used to modify their binding characteristics. Acrylics can be used on paper, canvas, and a range of other materials; however, their use on engineered woods such asmedium-density fiberboardcan be problematic because of the porous nature of those surfaces.[16]In these cases, it is recommended that the surface first be sealed with an appropriate sealer.[17]The process of sealing acrylic painting is called varnishing.[18]Artists use removablevarnishesover isolation coat[19]to protect paintings from dust, UV, scratches, etc. This process is similar to varnishing an oil painting.

Acrylics can be applied in thin layers or washes to create effects that resemble watercolors and other water-based mediums. They can also be used to build thick layers of paint — gel and molding paste are sometimes used to create paintings with relief features. Acrylic paints are also used in hobbies such as trains, cars, houses, DIY projects, and human models. People who make such models use acrylic paint to build facial features on dolls[20]or raised details on other types of models. Wet acrylic paint is easily removed from paintbrushes and skin with water, whereas oil paints require the use of a hydrocarbon.

Acrylics are the most common paints used ingrattage,a surrealist technique that began to be used with the advent of this type of paint. Acrylics are used for this purpose because they easily scrape or peel from a surface.[21]

Painting techniques

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Main article:Acrylic painting techniques

Acrylic artists' paints may be thinned with water or acrylic medium and used aswashesin the manner of watercolor paints, but unlike watercolor the washes are not rehydratable once dry. For this reason, acrylics do not lend themselves to the color lifting techniques ofgum arabic-based watercolor paints. Instead, the paint is applied in layers, sometimes diluting with water or acrylic medium to allow layers underneath to partially show through. Using an acrylic medium gives the paint more of a rich and glossy appearance, whereas using water makes the paint look more like watercolor and have a matte finish.[22]

A person in silhouette stands gazing down at a piece of art on the floor. Paintings on the wall behind the person are glowing from the UV light.
Fluorescent acrylic paints lit by UV light. Paintings by Beo Beyond.

Acrylic paints withgloss or mattefinishes are common, although a satin (semi-matte) sheen is most common. Some brands exhibit a range of finishes (e.g. heavy-body paints fromGolden,Liquitex,Winsor & NewtonandDaler-Rowney); Politec acrylics are fully matte.[23]As with oils, pigment amounts and particle size or shape can affect the paint sheen. Matting agents can also be added during manufacture to dull the finish. If desired, the artist can mix different media with their paints and use topcoats or varnishes to alter or unify sheen.

When dry, acrylic paint is generally non-removable from a solid surface if it adheres to the surface. Water or mild solvents do not re-solubilize it, althoughisopropyl alcoholcan lift some fresh paint films off.Tolueneandacetonecan remove paint films, but they do not lift paint stains very well and are not selective. The use of a solvent to remove paint may result in removal of all of the paint layers (acrylicgesso,et cetera). Oils and warm, soapy water can remove acrylic paint from skin. Acrylic paint can be removed from nonporous plastic surfaces such as miniatures or models using cleaning products such as Dettol (containing chloroxylenol 4.8% v/w).[24]

An acrylic sizing should be used to prime canvas in preparation for painting with acrylic paints, to prevent Support Induced Discoloration (SID). Acrylic paint contains surfactants that can pull up discoloration from a raw canvas, especially in transparent glazed or translucent gelled areas. Gesso alone will not stop SID; a sizing must be applied before using a gesso.[25][26]

The viscosity of acrylic can be successfully reduced by using suitable extenders that maintain the integrity of the paint film. There areretardersto slow drying and extendworkabilitytime, andflow releasesto increase color-blending ability.

Properties

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Grades

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Commercial acrylic paints come in two grades by manufacturers:

  • Artist acrylics(professional acrylics) are created and designed to resist chemical reactions from exposure to water,ultraviolet light,and oxygen.[27]Professional-grade acrylics have the most pigment, which allows for more medium manipulation and limits the color shift when mixed with other colors or after drying.[28][29]
  • Student acrylicshave working characteristics similar to artist acrylics, but with lower pigment concentrations, less-expensive formulas, and fewer available colors. More expensive pigments are generally replicated by hues. Colors are designed to be mixed even though color strength is lower. Hues may not have exactly the same mixing characteristics as full-strength colors.[28][29]

Varieties

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  • Heavy body acrylicsare typically found in the Artist and Student Grade paints. "Heavy Body" refers to the viscosity or thickness of the paint. They are the best choice for impasto or heavier paint applications and will hold a brush or knife stroke and even a medium stiff peak. Gel Mediums ( "pigment-less paints" ) are also available in various viscosities and used to thicken or thin paints, as well as extend paints and add transparency.[30]
  • Medium viscosity acrylics– Fluid acrylics, Soft body acrylics, or High Flow acrylics – have a lower viscosity but generally the same pigmentation as the Heavy Body acrylics. Available in either Artist quality or Craft quality, the cost and quality vary accordingly. These paints are good for watercolor techniques, airbrush application, or when smooth coverage is desired. Fluid acrylics can be mixed with any medium to thicken them for impasto work, or to thin them for glazing applications.[31]
  • Open acrylicswere created to address the one major difference between oil and acrylic paints: the shortened time it takes acrylic paints to dry. Designed by Golden Artist Colors, Inc. with a hydrophilic acrylic resin, these paints can take anywhere from a few hours to a few days, or even weeks, to dry completely, depending on paint thickness, support characteristics, temperature, and humidity.[32]
  • Iridescent, pearlandinterference acrylic colorscombine conventional pigments with powdered mica (aluminium silicate) or powdered bronze to achieve complex visual effects. Colors have shimmering or reflective characteristics, depending on the coarseness or fineness of the powder. Iridescent colors are used in fine arts and crafts.
  • Acrylic gouacheis like traditionalgouachebecause it dries to a matte, opaque finish. However, unlike traditional gouache, the acrylic binder makes it water-resistant once it dries.[33]Like craft paint, it will adhere to a variety of surfaces, not only canvas and paper. This paint is typically used by water-colorists, cartoonists, or illustrators, and for decorative orfolk artapplications.
    • Examples of acrylic gouache are Lascaux Gouache and Turner Acryl Gouache.
  • Craft acrylicscan be used on surfaces besides canvas, such as wood, metal, fabrics,[34]and ceramics. They are used in decorative painting techniques andfaux finishesto decorate objects of ordinary life. Although colors can be mixed, pigments are often not specified. Each color line is formulated instead to achieve a wide range of premixed colors. Craft paints usually employ vinyl or PVA resins to increase adhesion and lower cost.[35]
  • Interactive acrylicsare all-purpose acrylic artists' colors which have the characteristic fast-drying nature of artists' acrylics, but are formulated to allow artists to delay drying when they need more working time, or re-wet their work when they want to do more wet blending.
  • Exterior acrylicsare paints that can withstand outdoor conditions. Like craft acrylics, they adhere to many surfaces. They are more resistant to both water and ultraviolet light. This makes them the acrylic of choice for architectural murals, outdoor signs, and manyfaux-finishing techniques.
  • Acrylic glass paintis water-based and semi-permanent, making it a suitable paint for temporary displays on glass windows.[36]
  • Acrylic enamel paintcreates a smooth, hard shell. It can be oven-baked or air dried. It can be permanent if kept away from harsh conditions such as dishwashing.[36]

Differences between acrylic and oil paint

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Opaque red/orange square in the upper-right corner looks opaque like oil paint. The textured grey/black area looks like watercolor.
Detail of acrylic painting showing finishes that resemble both oil and watercolor

The vehicle and binder ofoil paintsislinseed oil(or anotherdrying oil), whereas acrylic paint has water as the vehicle for anemulsion(suspension) of acrylic polymer, which serves as the binder. Thus, oil paint is said to be "oil-based", whereas acrylic paint is "water-based" (or sometimes "water-borne" ).

Example of blending technique with acrylics. Painting on wooden panel.
An acrylic painting of a red and blue face in profile lies on top of a tray on a table. Below the painting, on the table, are a palette and various sizes and colors of paint.
A demonstration of blending with acrylic paint. No retarders were used.

The main practical difference between most acrylics and oil paints is the inherent drying time. Oils allow for more time to blend colors and apply even glazes overunderpaintings.This slow-drying aspect of oil can be seen as an advantage for certain techniques, but it impedes an artist trying to work quickly. The fast evaporation of water from regular acrylic paint films can be slowed with the use ofacrylic retarders.Retarders are generally glycol or glycerin-based additives. The addition of a retarder slows the evaporation rate of the water.

Oil paints may require the use of solvents such as mineral spirits orturpentineto thin the paint and clean up. These solvents generally have some level of toxicity and can be found objectionable. Relatively recently, water-miscible oil paints have been developed for artists' use. Oil paint films can gradually yellow and lose their flexibility over time creating cracks in the paint film; the "fat over lean"rule must be observed to ensure its durability.

Oil paint has a higher pigment load than acrylic paint. As linseed oil contains a smaller molecule than acrylic paint, oil paint is able to absorb substantially more pigment. Oil provides arefractive indexthat is less clear than acrylic dispersions, which imparts a unique "look and feel" to the resultant paint film. Not all the pigments of oil paints are available in acrylics and vice versa, as each medium has different chemical sensitivities. Some historical pigments are alkali sensitive, and therefore cannot be made in an acrylic emulsion; others are just too difficult to formulate.[37]Approximate "hue" color formulations, that do not contain the historical pigments, are typically offered as substitutes.[38][39]

Because of acrylic paint's more flexible nature and more consistent drying time between layers, an artist does not have to follow the same rules of oil painting, where more medium must be applied to each layer to avoid cracking. It usually takes 10–20 minutes for one to two layers of acrylic paint to dry, depending on the brand, quality, and humidity levels of the surrounding environment.[40]Some professional grades of acrylic paint can take 20–30 minutes or even more than an hour.[40]Although canvas needs to be properly primed before painting with oils to prevent the paint medium from eventually rotting the canvas, acrylic can be safely applied straight to the canvas. The rapid drying of acrylic paint tends to discourage blending of color and use ofwet-in-wettechnique as in oil painting. Even though acrylic retarders can slow drying time to several hours, it remains a relatively fast-drying medium and adding too much acrylic retarder can prevent the paint from ever drying properly.

Meanwhile, acrylic paint is very elastic, which prevents cracking from occurring. Acrylic paint's binder is acrylic polymer emulsion – as this binder dries, the paint remains flexible.[41]

Another difference between oil and acrylic paints is the versatility offered by acrylic paints. Acrylics are very useful in mixed media, allowing the use of pastel (oil and chalk), charcoal and pen (among others) on top of the dried acrylic painted surface. Mixing other bodies into the acrylic is possible—sand, rice, and even pasta may be incorporated in the artwork. Mixing artist or student grade acrylic paint with household acrylic emulsions is possible, allowing the use of premixed tints straight from the tube or tin, and thereby presenting the painter with a vast color range at their disposal. This versatility is also illustrated by the variety of additional artistic uses for acrylics. Specialized acrylics have been manufactured and used forlinoblock printing(acrylicblock printingink has been produced by Derivan since the early 1980s),face painting,airbrushing,watercolor-like techniques, andfabric screen printing.

Another difference between oil and acrylic paint is the cleanup. Acrylic paint can be cleaned out of a brush with any soap, while oil paint needs a specific type to be sure to get all the oil out of the brushes. Also, it is easier to let a palette with oil paint dry and then scrape the paint off, whereas one can easily clean wet acrylic paint with water.[42]

Difference between acrylic and watercolor paint

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The biggest difference is that acrylic paint is opaque, whereaswatercolorpaint is translucent in nature. Watercolors take about 5 to 15 minutes to dry while acrylics take about 10 to 20 minutes. In order to change the tone or shade of a watercolor pigment, you change the percentage of water mixed in to the color. For brighter colors, add more water. For darker colors, add less water. In order to create lighter or darker colors with acrylic paints, you add white or black.[43]

Another difference is that watercolors must be painted onto a porous surface, primarily watercolor paper. Acrylic paints can be used on many different surfaces.[43]

Both acrylic and watercolor are easy to clean up with water. Acrylic paint should be cleaned with soap and water immediately following use. Watercolor paint can be cleaned with just water.[44][45][46]

See also

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Notes and references

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  1. ^Here, the word describes a technique that allows more time before the paint dries.[citation needed]
  2. ^Izzo, Francesca Caterina; Balliana, Eleonora; Pinton, Federica; Zendri, Elisabetta (2014-12-20)."A preliminary study of the composition of commercial oil, acrylic and vinyl paints and their behaviour after accelerated ageing conditions".Conservation Science in Cultural Heritage.14:353–369 Paginazione.doi:10.6092/ISSN.1973-9494/4753.Archivedfrom the original on 2021-11-07.Retrieved2021-11-05.
  3. ^abSickler, Dean (Spring 2002)."Water-based Alchemy by Dean Sickler".Dundean.com.Archived fromthe originalon August 29, 2012.RetrievedAugust 11,2012.
  4. ^Phaidon Press (2001).The 20th-Century Art Book(Reprinted. ed.). London: Phaidon Press.ISBN0714835420.
  5. ^"Acrylic Paint: Origin And Making".stationers.pk.Archivedfrom the original on 2021-11-18.Retrieved2021-11-18.
  6. ^"Lance Ribeiro".The Times.2011-01-24.Archivedfrom the original on 2021-04-11.Retrieved11 March2017.
  7. ^Zetina, Sandra et al. (2020).Painting with Acrylics: José Gutiérrez, Gunther Gerzso and the Material Innovation in Mexican Contemporary PaintingArchived2023-08-19 at theWayback Machine,in:Science and Art: The Contemporary Painted Surface,Antonio Sgamellotti et al. (eds.), Royal Society of Chemistry. Retrieved 8 June 2021.
  8. ^Acerca de PolitecArchived2021-06-07 at theWayback Machine,Politec. Retrieved 8 June 2021.
  9. ^Thomas, J. S., Learner (2007). "Modern Paints: Uncovering the Choices". In Learner, Thomas J. S.; Smithen, Patricia; Krueger, Jay W.; Schilling, Michael R. (eds.).Modern Paints Uncovered(PDF).Los Angeles: Getty Conservation Institute. p. 6.ISBN9780892369065.Archived(PDF)from the original on 2022-10-09.
  10. ^Rivenc, Rachel (2016-04-01).Made in Los Angeles: Materials, Processes, and the Birth of West Coast Minimalism.Getty Publications. p. 57.ISBN978-1-60606-465-8.Archivedfrom the original on 2023-12-13.Retrieved2021-11-05.
  11. ^Painting With Acrylics (Watson-Guptill publications)
  12. ^"History of Derivan Artist Acrylics".Archivedfrom the original on 2023-01-05.Retrieved2023-01-05.
  13. ^"A History of GOLDEN Artist Colors, Inc".Golden Artist Colors, Inc.Archivedfrom the original on 2016-04-16.Retrieved2015-10-08.
  14. ^"Art Materials".Daler Rowney. 2012-02-15.Archivedfrom the original on 2018-12-08.Retrieved2013-02-05.
  15. ^"How to Modify Acrylic Paint with Mediums".My Blue Print.7 April 2019.Archivedfrom the original on 31 August 2019.Retrieved31 August2019.
  16. ^Sealing, Staining, and Filling[1]Archived2010-08-03 at theWayback MachineWood Finishing and Refinishing accessed December 08, 2010,
  17. ^Yu, Ziniu (March 2023)."Sustainable and High Performance: New Biobased Acrylic Dispersion to Prevent Knot Staining for Wood Coatings".CoatingsTech:40–47.Archivedfrom the original on 2023-12-13.Retrieved2023-03-02– via American Coatings Association.
  18. ^Eretnova, Maria (February 3, 2021)."How to varnish an acrylic painting".AcrylicPaintingSchool.Archivedfrom the original on February 2, 2023.RetrievedFebruary 2,2023.
  19. ^Eretnova, Maria (January 19, 2021)."Is Isolation coat necessary for acrylic painting?".AcrylicPaintingSchool.Archivedfrom the original on February 2, 2023.RetrievedFebruary 2,2023.
  20. ^Medaris Culea, Patti (2005).Creative Cloth Doll Faces: Using Paints, Pastels, Fibers, Beading, Collage.Quarry Books. p. 64.ISBN159253144X.
  21. ^Grattage[2]Archived2010-09-04 at theWayback MachineArt Techniques accessed December 08, 2010
  22. ^Staff, Artists Network (2016-10-11)."2 Ways to Thin Acrylic Paint | Painting with Acrylics for Beginners".Artists Network.Archivedfrom the original on 2020-02-03.Retrieved2020-02-03.
  23. ^"Val Green's Art Space – Acrylic Painting".www.valgreen.com.Archivedfrom the original on 2016-04-25.Retrieved2016-03-31.
  24. ^Removing Acrylic Paint From Skin[3]Archived2010-09-14 at theWayback MachineInstructions accessed December 08, 2010
  25. ^Preparing A Painting Support[4]Archived2017-12-31 at theWayback Machineaccessed December 17, 2017
  26. ^OPEN Acrylics, Shellac, and SID[5]Archived2017-09-23 at theWayback Machineaccessed December 17, 2017
  27. ^Brady, Patti (December 29, 2008).rethinking acrylic.Cincinnati, Ohio: North Light Books. p. 16.ISBN978-1600610134.
  28. ^abKemp, Will (22 September 2011)."The 8 key differences between Artist quality vs Student grade acrylic paints".willkempartschool.com/.Archivedfrom the original on 18 April 2015.Retrieved21 April2015.
  29. ^abGlover, David Lloyd (2014).Color Mixing in Acrylic.Walter Foster Publishing.ISBN9781600583889.Archivedfrom the original on 13 December 2023.Retrieved16 November2015.
  30. ^"Heavy Body Acrylic Paint".liquitex.com/.Archived fromthe originalon 19 May 2015.Retrieved21 April2015.
  31. ^"Fluid".goldenpaints.com/.Archivedfrom the original on 5 May 2015.Retrieved21 April2015.
  32. ^Brady, Patti (2008).rethinking acrylic.North Light Books. p. 14.ISBN978-1600610134.
  33. ^Walsh, Sarah (August 2018).Playful Painting: People: Whimsical projects and clever techniques.Walter Foster Publishing.ISBN978-1633224698.
  34. ^"How Can You Use Acrylic Paint On Fabric? Our Top 5 Picks - PaintHack.com".2022-09-21.Archivedfrom the original on 2022-10-03.Retrieved2022-10-03.
  35. ^Glover, David Lloyd (August 2014).Color Mixing in Acrylic: Learn to Mix Fresh, Vibrant Colors for Still Lifes.Walter Foster Publishing. p. 10.ISBN978-1600583889.
  36. ^abLee, Debbie (2022-04-02)."The 8 Best Paints For Glass Painting".Bustle.Archivedfrom the original on 2022-04-03.Retrieved2022-04-04.
  37. ^Some Historical Pigments and Their ReplacementsArchived2019-05-14 at theWayback Machineaccessed December 18, 2017
  38. ^Prussian Blue Hue (Fluid)Archived2017-11-13 at theWayback Machineaccessed December 18, 2017
  39. ^Viridian Green Hue (Heavy Body)Archived2019-05-14 at theWayback Machineaccessed December 18, 2017
  40. ^ab"Understanding drying times for acrylic paints".Winsor & Newton - ROW.Archivedfrom the original on 2022-05-26.Retrieved2022-06-28.
  41. ^Acrylic Paint Common Questions[6]Technical Summary of Acrylic Paint accessed December 06, 2010ArchivedJanuary 1, 2011, at theWayback Machine
  42. ^Wendon Blake (1997).Acrylic Painting: A Complete Guide.Courier Corporation. pp. 59–.ISBN978-0-486-29589-3.Archivedfrom the original on 2023-12-13.Retrieved2018-04-07.
  43. ^abartincontext (2021-08-22)."Watercolor vs. Acrylic - The Difference Between Watercolor and Acrylic".artincontext.org.Archivedfrom the original on 2022-08-15.Retrieved2022-06-28.
  44. ^Watercolor vs Acrylic[7]Archived2020-09-23 at theWayback Machineaccessed August 21, 2020
  45. ^Appellof, M.E. (1992).Everything You Ever Wanted to Know About Watercolor.Watson-Guptill Publications. pp. 399–.ISBN978-0-823-05649-1.Archivedfrom the original on 2023-12-13.Retrieved2020-08-23.
  46. ^Why WaterColor[8]Archived2020-08-05 at theWayback Machineaccessed August 21, 2020
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