Due to their low volatility and high antioxidant activities, Wingstay^® antioxidants are widely used in latex based products, such as natural rubber latex, polychloroprene latex, carboxylated SBR latex and SBR latex etc.

Wingstay^® L is one of the most widely used phenolic antioxidants worldwide when a non-staining and non-discoloring antioxidant is required. Wingstay^® 29 is used when ultimate high temperature protection is needed, such as engine gasket, and color properties are not important.

Some major applications are :

1. Elastic Threads

Whether the elastic threads are made of natural rubber latex or solid natural rubber, they are used extensively as part of garments or garment accessories such as socks etc. They require an antioxidant that protects them from the following stringent performance requirements :

• their high surface area to weight ratio requires good protection from oxygen in the air to maintain elasticity for prolonged periods,

• continued extraction by detergent and water during washing cycles,

• an antioxidant that is safe for contact with skin, especially when the garment article is in direct contact with human bodies, such as socks, underwear etc.

Wingstay^® L, being a polymeric phenolic, has high resistance to extraction by water and detergents during washing cycles. It also has very low volatility and thus stays in the rubber thread longer than most other antioxidant. It also provides more consistent protection to the natural rubber over time.
Wingstay^® L has wide regulatory compliances worldwide.
Coupled with its high antioxidant properties, there is no wonder that it is one of the most widely used antioxidants in this market in the world.

2. Dipped Rubber Goods

Wingstay^® L is widely used in dipped rubber goods, such as medical and industrial rubber latex gloves, condoms, sporting goods and balloons etc.

Most of these products have very thin walls , leading to a large surface area exposure to air oxidation or solvent / detergent extraction, shortening their useful product lives.

Due to the polymeric nature of Wingstay^® L, it has very low volatility, high resistance to extraction and high antioxidant potency. Thus it is eminently suitable to provide the very stringent protection needed in dipped goods application where non-staining and non-discoloring properties are required.

Wingstay^® 29 provides the ultimate in high temperature protection, and is thus widely used in non-white industrial application where color is not an important property.

In polychloroprene dipped goods, both Wingstay^® L and Wingstay^® 29 provide the additional benefit of reducing scorch risk of the compounds.

3. Foam Products

Irrespective whether the foam product is made of solid rubber or rubber latex, the foam structure creates a very high ratio of weight to surface area. Thus it is highly susceptible to air oxidation and losing its physical properties rapidly if it is not protected with a potent antioxidant.

Wingstay^® L is a polymer hindered phenol which has very low volatility and high antioxidant potency. This is eminently suitable to offer the high degree of protection needed in foam products, particularly if non-staining and non-discoloring performance is needed.

If color is not an important performance criteria, then Wingstay^® 29 offers an alternative if a diphenylamine antioxidant is preferred.