UV absorbers-UV-1164

Chemical Name: 2-(4, 6-Bis-(2,4-dimethylphenyl)-1,3,5-triazin-2-yl)-5-(octyloxy)-phenol

Commercial Name: UV 1164; UV 1164

CAS NO.: 2725-22-6

UV 1164 is one of the most powerful and durable UV absorbers, it derives from a hydroxyphenyl-S-triazine. Its absorbance ability is higher in the B region of UV radiation where the absorbance goes from 290 to 350 nm, with maximum absorbance at 342 nm. This is the wavelength where the most of ethylene polymers start to decompose.

UV-1164 has a very low volatility and is very compatible with polymers and other additives.This product is suitable for polyoxymethylene, polyamide, polycarbonate, polyethylene, polyether amine, ABS resin and polymethyl methacrylate. Especially suitable for nylon and engineering plastics.

Benefits of UV 1164

High light stability, minimum contribution to the final colour, the low interaction with metallic ions (like catalysis residues) and very low volatility that limits processing problems like plate out, surface imperfections and die lip building for the entire service life.

UV 1164 is the UV absorber of choice for greenhouses PE films used in very sunny areas. Moreover, UV 1164 is the most used UV absorber to increase the light fastness of many organic pigments and dyes, in the synthetic fibres (PP, PA, PET) mass dyeing.

Characterization

High inherent UV stability

Minimal color contribution

Low interaction with metals

High permanence

Excellent compatibility with other stabilizer chemistries

Health and safety

EFFECTS OF OVEREXPOSURE:

Acute oral (rat) and dermal (rabbit) LD50 values are >5.0g/kg and >2.0 g/kg, respectively. The 4-hour LC50 (rat)value was greater than 377 mg/m3 which was the maximum attainable concentration. No skin irritation (rabbit) or dermal sensitization (guinea pigs) was seen with this material.

This material was not mutagenic in the Ames Assay.

Direct contact with this material may cause mild eye and minimal skin irritation

Application:

Thanks to its UV-B absorption and its low volatility and the tendency to sublimate, UV 1164 is highly recommended to be used in engineering resins like PA, PC, PET, PBT, PMMA, POM, PE, PP, TPO, ASA, ABS and polymer blends and in general in all applications that require a wide surface area like fibres, laminating films, PE/EVA  films for the greenhouses that must resist for 36-48 month of intensive exposition in very sunny areas, and for PC roof sheeting.

UV 1164 is also a UV absorber of choice for powder coating (for the automotive and for coils) cured at high temperature over 185 °C and exposed to environmental attack.

In the other freilds, UV 1164 also cold be suitable for PU, Poly Keton.

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