Oil drying agent

Oil drying agent

An oil drying agent is a coordination compound that accelerates (catalyzes) the hardening of drying oils through chemical crosslinking. The catalysts affect the autoxidation of the oils with air. Typical oil drying agents are derived from cobalt, manganese, and iron and lipophilic carboxylic acids such as naphthenic acids to make them oil-soluble.[1]

Varieties of drying agents

Oil drying agents are often called salts, but they are probably non-ionic coordination complexes akin to basic zinc acetate. These catalysts were traditionally carboxylates of lead, but cobalt and other driers such as zirconium, zinc, calcium, and iron have become popular. Most driers are colorless but cobalt is a deep blue purple color and iron driers are reddish orange. Thus the colored driers are compatible only with certain paints.

Japan drier is a common lay term and generic product name for any oil drying agent that can be mixed with drying oils such as boiled linseed oil and alkyd resin paints to speed up "drying".


Premature hardening of paint, called skinning, can be inhibited by the addition of volatile ligands that bind to the oil drying agents. One such inhibitor is methylethyl ketone oxime (MEKO), which is called an "antiskinning agent."


  1. ^ Ulrich Poth, "Drying Oils and Related Products" in Ullmann's Encyclopedia of Industrial Chemistry Wiley-VCH, Weinheim, 2002. doi:10.1002/14356007.a09_055

Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Drying agent — The term drying agent has different meanings: Desiccant for materials that absorb moisture and water Oil drying agents for compounds that speed up the hardening of oils, often used in painting This disambiguation page lists articles associated… …   Wikipedia

  • oil — An inflammable liquid, of fatty consistency and unctuous feel, which is insoluble in water, soluble or insoluble in alcohol, and freely soluble in ether. Oils are variously classified as animal …   Medical dictionary

  • Oil painting — Mona Lisa, Leonardo da Vinci, c. 1503–06 Oil painting is the process of painting with pigments that are bound with a medium of drying oil especially in early modern Europe, linseed oil. Often an oil such as linseed was boiled w …   Wikipedia

  • Drying — For the food conservation method, see drying (food). Drying is a mass transfer process consisting of the removal of water or another solvent [1] by evaporation from a solid, semi solid or liquid. This process is often used as a final production… …   Wikipedia

  • tung oil — noun a yellow oil obtained from the seeds of the tung tree • Syn: ↑Chinese wood oil • Hypernyms: ↑oil * * * noun Etymology: part translation of Chinese (Pekingese) yu2 t ung2 tung tree oil, from …   Useful english dictionary

  • Stillingia oil — is obtained by solvent from the seeds of Sapium sebiferum (Chinese tallow tree). [Duke Handbook sectionurl=Sapium sebiferum.html sectiontitle=Sapium sebiferum (L.) Roxb.] It is used as a drying agent in paints and varnishes. [cite book… …   Wikipedia

  • linseed oil — noun An oil, extracted from flax seeds, used as a drying agent in paints, varnishes etc …   Wiktionary

  • tung oil — noun an oil obtained from the seeds of a SE Asian tree (genus Aleurites), used as a drying agent in inks, paints, and varnishes. Origin C19: from Chin …   English new terms dictionary

  • tung oil — /tung/ a yellow drying oil derived from the seeds of a tung tree, Aleurites fordii, used in varnishes, linoleum, etc. [1880 85; tung < Chin tóng tung tree] * * * also called  wood oil , or  china wood oil        pale yellow, pungent drying oil… …   Universalium

  • Mineral oil — For crude oil found in geological deposits, see Petroleum. Bottle of mineral oil as sold in the U.S. A mineral oil is any of various colorless, odorless, light mixtures of alkanes in the C15 to C40 range from a non vegetable (mineral) source,… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”