Speedblock AO2

Speedblock AO2 by Lambson (Sartomer) is octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate. Acts as a sterically hindered antioxidant. This antioxidant hinders thermally induced oxidation of polymers in coatings. It works by trapping free radicals formed upon heating in the presence of oxygen and prevents the discoloration or change of the resins mechanical properties. It is non-polluting, non-toxic with good heat and water resisting performance. It can be used in combination with other additives such as co-stabilizers, light stabilizers and other functional stabilizers. Speedblock AO2 is compatible with polyethylene, polypropylene, polybutene-1, styrene homo- and copolymers, polyurethane, elastomers. Recommended dosage is 500-2,000 ppm. For polyoelfins, it is 0.1-0.4% depending on substrate. It has a shelf life of 2 years.