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Stabilizer (chemistry)

In industrial chemistry, a stabilizer is a chemical that is used to prevent degradation. Heat and light stabilizers are added to plastics and elastomers because they ensure safe processing and protect products against aging and weathering. The trend is towards fluid systems, s, and increased use of masterbatches. There are monofunctional, bifunctional, and polyfunctional stabilizers. In economic terms the most important product groups on the market for stabilizers are compounds based on calcium (calcium-zinc and organo-calcium), lead, and tin stabilizers as well as liquid and light stabilizers (HALS, benzophenone, benzotriazole). Cadmium-based stabilizers largely vanished in the last years due to health and environmental concerns.Ceresana, Market Study Stabilizers, March 2014, http://www.ceresana.com/en/market-studies/additives/stabilizers/ File:BigPhosphite31570-04-4.png| Tris(2,4-di-tert-butylphenyl)phosphite is a widely used stabilizer in polymers. File:HALSgeneric.png|Partial structure of typical hindered amine light stabilizers, widely used to protect automotive paints from degradation by UV-light. File:Salpn.png|Salpn is a typical metal deactivator used as a fuel additive to suppress oxidation processes that lead to gums and solids. Metal deactivators like salpn form stable complexes with the metals, suppressing their catalytic activity.

Polymers

Some kinds of stabilizers are:

Paints

Food

In foods, prevent spoilage. Classes of food stabilizers include " emulsifiers, thickeners and gelling agents, foam stabilizers, humectants, anticaking agents, and coating agents."Erich Lück, Gert-Wolfhard von Rymon Lipinski "Foods, 3. Food Additives" in Ullmann's Encyclopedia of Industrial Chemistry, 2002, Wiley-VCH, Weinheim.

See also

References

"green air" © 2007 - Ingo Malchow, Webdesign Neustrelitz
This article based upon the http://en.wikipedia.org/wiki/Stabilizer_(chemistry), the free encyclopaedia Wikipedia and is licensed under the GNU Free Documentation License.
Further informations available on the list of authors and history: http://en.wikipedia.org/w/index.php?title=Stabilizer_(chemistry)&action=history
presented by: Ingo Malchow, Mirower Bogen 22, 17235 Neustrelitz, Germany