Nonstaining antioxidants may be used. Staining antioxidants are preferred for the manufacture of tires. Gasoline and jet engine fuels contain unsaturated compounds that oxidize on storage, darken, and form gums and deposits. Radical scanvengers and alkylated paraphenylene diamines are used as stabilizers.
Lubricants for gasoline engines are required to withstand harsh conditions. Relatively high concentrations of primary antioxidants and synergists are used to stabilize lubricating oils. The oxidation of food containing fats and oils results in a loss of sensory appeal and eventually rancidness. The U.
Food and Drug Administration FDA regulations covering the use of direct food additives are stringent and few new materials have been regulated. A number of antioxidants have been accepted by the FDA as indirect additives for polymers used in food applications.
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Continued exposure to heat and shear as well as environmental exposure consumes the protective additives in the polymer. Once additives are consumed polymer properties decline rapidly. The secondary addition of additives is common practice in the polymer processing industry and until recently, polymer additive master batch was the preferred method of addition. Additive addition has advantages for converters who process virgin resin or use reprocessed materials.
The proper additives can improve the finished polymer product quality as well as increase processing efficiency. Customer area Welcome back. Search form Search.
Antioxidant Blends. Phenolic Antioxidants. Phosphite Antioxidants. Sulfur Synergists. Antistatic agents. Acid neutralizers. Flame retardants.
Light stabilisers. Liquid HALS.
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UV - Absorbers.