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Soy oil was an early runner to replace linseed oil in paint products but did not transition fully, in part as it was attractive as a food product. [2] In 1933 Robert Boyer developed an enamel soy paint which was used on Ford automobiles. [1] [3] Soy oil was attractive to manufacturers because of its very good drying quantities. [4]
Soybean oil (British English: soyabean oil) is a vegetable oil extracted from the seeds of the soybean (Glycine max). It is one of the most widely consumed cooking oils and the second most consumed vegetable oil. [2] As a drying oil, processed soybean oil is also used as a base for printing inks and oil paints.
Oils with an iodine number greater than 130 are considered drying, those with an iodine number of 115–130 are semi-drying, and those with an iodine number of less than 115 are non-drying. Linseed oil, the most prevalent vehicle for artists' oil paints, is a drying oil. When exposed to air, oils do not undergo an evaporation process like water ...
Drying oils are a key component of oil paint and some varnishes. Some commonly used drying oils include linseed oil, tung oil, poppy seed oil, perilla oil, castor oil and walnut oil. The use of natural drying oils has declined over the past several decades, as they have been replaced by alkyd resins and other binders.
Such oils are used as the basis of oil paints, and in other paint and wood finishing applications. In addition to the oils listed here, walnut, sunflower and safflower oil are also considered to be drying oils. [176] Dammar oil, from the Canarium strictum, used in paint as an oil drying agent. [177] Can also be used as a lamp oil. [178]
Typical sources of drying oils for alkyd coatings are tung oil, linseed oil, sunflower oil, safflower oil, walnut oil, soybean oil, fish oil, corn oil, dehydrated castor oil (in which dehydration transforms certain of its fatty acids’ single bonds into double bonds, some of them conjugated, creating a semi-drying oil) and tall oil (resinous ...
It can also be used as a painting medium, making oil paints more fluid, transparent and glossy. It is available in varieties such as cold-pressed, alkali-refined, sun-bleached, sun-thickened, and polymerised (stand oil). The introduction of linseed oil was a significant advance in the technology of oil painting. [citation needed]
An oil drying agent, also known as siccative, is a coordination compound that accelerates the hardening of drying oils, often as they are used in oil-based paints.This so-called "drying" (actually a chemical reaction that produces an organic plastic) occurs through free-radical chemical crosslinking of the oils.
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