Antioxidants of phenols

1. Aromatic amine antioxidants

Aromatic amine antioxidants, also known as rubber antioxidants, are the most widely produced category. These antioxidants are inexpensive and have significant antioxidant effects. However, discoloration of the products limits their use in light-colored and white products. The applications of this kind are mainly used in plastics, synthetic fibers, latex, petroleum products, foods, drugs and cosmetics. Important aromatic amine antioxidants include diphenylamine, p-phenylenediamine and dihydroquinoline compounds and their derivatives or polymers. They can be used in natural rubber, styrene-butadiene rubber, neoprene and isoprene rubber and other products. in.

2. Hindered phenolic antioxidants

Hindered phenolic antioxidants are some phenolic compounds that have steric hindrance, their thermal oxidation resistance is significant, they will not contaminate the product and develop rapidly. There are many varieties of antioxidants. Important products include 2,6-tributyl-4-methylphenol, bis(3,5-tributyl-4-hydroxyphenyl) sulfide, and four. [Peta-(3,5-tri-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester and the like. These antioxidants are mainly used in plastics, synthetic fibers, latex, petroleum products, foods, drugs and cosmetics. (Right figure shows the structure of hindered phenolic antioxidants)

3, auxiliary antioxidant

Thiodipropionate is a type of auxiliary antioxidant, often combined with hindered phenolic antioxidants. The effect is significant, such as: thiodipropionic acid diester, often combined with hindered phenolic antioxidants. , The main products are: double dodecanol ester, double tetradecyl alcohol ester and double octadecyl alcohol ester.

Phosphites are also auxiliary antioxidants. The main products are trioctyl ester, triterpene ester, tri(dodecanol) ester and tri(hexadecyl) alcohol ester.

Nantong Xinchang Chemical Co., Ltd. specializes in producing antioxidants. Welcome customers to consult.