Antioxidant 250-SVA
2,5’-Di(tertamyl)hydroquinone
79-74-3
Akrochem
抗氧化剂
Antioxidant
涂层
Coatings
Soluble in acetone, ethanol and diethylether
Insoluble in water
Antioxidant 250-SVA is a non-discoloring, non-staining antioxidant [chemically, 2,5’-Di(tertamyl)
hydroquinone]. It provides the unique function of extending tack in uncured rubber, adhesive films for tape
applications and hot melt adhesives. Antioxidant 250-SVA slows the drying out or “skinning” of adhesive
coatings and paint resins. Antioxidant 250-SVA also reduces cold flow in rubber compounds. CAS No. : 79-
74-3.
A major use of Antioxidant 250-SVA is to prevent loss of tack in uncured adhesive films. It can be used in a
wide variety of adhesives, tapes, coatings and friction stocks at a 0.5 to 4.0 phr level. Antioxidant 250-SVA
also has clearance under FDA regulation 177.2600 for rubber and Section 175.105 for adhesives. Antioxidant
250-SVA is very aggressive against the effects of oxygen and sunlight. This prevents the uptake of oxygen at the
compound surface and thus prevents loss of tack. Because of the fast acting radical-accepting characteristic, it is
suggested that a lower volatility antioxidant (such as Antioxidant 358-SWC) be used in combination with
Antioxidant 250-SVA to insure long lasting antioxidant protection.
Non-discoloring, non-staining antioxidant. Used in a wide variety of coatings. Slows drying out or "skinning" of paint resins. Offers fast acting radical-accepting characteristic. Can be used in combination with a lower volatility antioxidant to insure long lasting antioxidant protection. <br>
Use level: 0.5-4.0 phr.