Tinuvin 1577 is an ultraviolet light absorber (UVA) of the hydroxyphenyl triazine class exhibiting very low volatility and good compatibility with a variety of polymers, co-additives and resin compositions. Tinuvin 1577 allows polycarbonates and polyesters to achieve a higher resistance to weathering than conventional benzotriazole UV absorbers.

Applications

Tinuvin 1577 applications include polyalkene terephthalates and naphthalates, linear and branched polycarbonates, modified polyphenylene ether compounds, and various high performance plastics.

The use of this ingredient is indicated in polymer blends & alloys, such as PC/ ABS, PC/PBT, PPE/IPS, PPE/PA and copolymers as well as in reinforced, filled and/or flame retarded compounds, which can be transparent, translucent and/or pigmented. Its very low tendency to chelate allows Tinuvin 1577 formulations in polymers containing catalyst residues.

Features & Benefits

Tinuvin 1577 is particularly suitable for processing and aging conditions where high loadings, low volatility and good compatibility are required. Such requirements are especially critical for complex moldings, fibers, plain and corrugated sheets, thin films, co-injected or co-extruded semi-finished parts.

Depending on equipment, processing conditions, and polymer types, this product allows direct two-layer co-extrusion of sheets without the use of a neutral third top layer to prevent sublimation and/or deposits generated by the thin, highly UVA loaded cap layer. Moreover, its very high UV screen actitivity allows the use of lower concentrations than with traditional UV absorbers. This may be of particular importance when using Tinuvin 1577 in high concentration applications.

Properties

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