top of page

 

Thorb® 1577

 

Thorb® 1577 is a special UV absorber with low volatility, high molecular weight, high temperature resistance and low volatility. It has good   compatibility with most polymers, additives and formula resins.

Compared with the traditional benzotriazole UV absorber, the polycarbonate(PC) and polyester (PET,PBT) which have added Thorb® 1577 have better weathering resistance, better UV absorbency and no effect on transparency. It is especially suitable for the processing and application of UV absorber for large amount, low volatilization and good compatibility, such as complex moulding products, flat /corrugated panels, double panels, thin films, co-injection molding or co-extrusion semi-finished products. It allows double-layer direct co-extrusion without the usual sublimation or precipitation problems of UV absorbers that may have been encountered in the past.

​

Chemical Name ：2-(4,6-Diphenyl-1,3,5-triazin-2-yl)-5-[(hexyl)oxy]- phenol

 

CAS NO: 147315-50-2
 

Physical Properties:

  • Appearance: Light yellow powder

  • Density (25°C): 1.19 g/mL

  • Melting point: 147-151°C

  • Solubility: Soluble in chloroform, diphenyl methane, toluene, ethyl acetate; slightly soluble in n-hexanol, ethanol

 

CHEMICAL STRUCTURES:
 

 

 

 

 

 

​

​

Application:

As a triazine series UV absorber, Thorb® 1577 has very low volatility and is highly compatible with polymers and other additives. It is especially suitable for polymers that require high concentration, low volatility processing and good    conditions. It can be used with acrylate, PVC, polyester, polycarbonate, styrene, and other high performance polymers. It can make polycarbonate and polyester achieve better weather resistance than traditional UV absorbers. Low chelating trend enables it to be used in polymer formulations containing residual catalysts.

Thorb® 1577 is suitable for all kinds of high performance polymers and alloys, such as PET、PBT、PC(linear and branched), polyether ester, PMMA, acrylic copolymers, PA、PS、SAN、ASA, polyolefin, etc., reinforced or not reinforced, filled or unfilled, flame-retardant or non-flame-retardant, transparent, translucent, etc.

Thorb® 1577 especially suitable for:

  • Polycarbonate (PC) films, sheets, and plates: Excellent compatibility with PC, extremely low volatility during high-temperature melt processing, minimal precipitation, and no need for frequent cleaning of flow channels and molds.

  • Nylon (PA) films and sheets.

  • Polyester (PET, PBT) films, sheets, and plates.

  • Polymethyl methacrylate (PMMA) films, sheets, and plates.

  • Other application areas that require exceptional long-term light stability.

bottom of page