Applications

TINUVIN P provides ultraviolet protection in a wide variety of polymers including styrene homo- and copolymers, engineering plastics such as polyesters and acrylic resins, polyvinyl chloride, and other halogen containing polymers and copolymers (e. g. vinylidenes), acetals and cellulose esters. Elastomers, adhesives, polycarbonate blends, polyurethanes, and epoxy materials also benefit from the use of TINUVIN P.

Features and Benefits

TINUVIN P features a strong absorption of ultraviolet radiation in the 300 – 400 nm region. It also has a high degree of photostability over long periods of light exposure. The high absorbance combined with photostability and the ability to release absorbed energy in non sensitizing ways make TINUVIN P an effective stabilizer against the effects of ultraviolet light.

Guidelines for use

The use levels of TINUVIN P range between 0.1 % and 0.5 %, depending on substrate and performance requirements of the final application. TINUVIN P can be used alone or in combination with other functional additives such as antioxidants (hindered phenols, phosphites) and HALS light stabilizers, where
often a synergistic performance is observed.

TINUVIN P may react with various heavy metal ions to form salts or complexes. For example, if TINUVIN P comes into contact with iron or cobalt ions, colored complexes are formed. Reducing and oxidizing agents used in
polymerization and curing processes have no effect on the stability of TINUVIN P.