LOTSORB UV 1577 (CAS:147315-50-2 )

Characterization

Lotsorb UV 1577 represents a new class of UV absorber exhibiting very low volatility and good compatibility with a variety of polymers, co-additives and resin compositions. It allows polycarbonates and polyesters to achieve a higher resistance to weathering than conventional benzotriazole UV absorbers.

Chemical name

 2-(4,6-Diphenyl-1,3,5-triazin-2-yl)-5-hexyloxy-phenol

CAS number 147315-50-2 

Structure 

Molecular weight

 425 g/mol

Applications

 Lotsorb UV 1577 applications include polyalkene terephthalates and naphthalates, linear and  branched polycarbonates, modified polyphenylene ether compounds, and various high  performance plastics. The use of Lotsorb UV 1577 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 Lotsorb  UV 1577 formulations in polymers containing catalyst residues.

Features/benefits 

Lotsorb UV 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, Lotsorb UV 1577 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 UVscreen actitivity allows the use of lower concentrations than with traditional UV absorbers. This may  be of particular importance when using Lotsorb UV 1577 in high concentration applications.

Product form

Code:Lotsorb UV 1577 

 Appearance: Yellowish, free-flowing powder or granular

Guidelines for use

Lotsorb UV 1577 (0.2 - 6% by weight) can be readily incorporated into the polymer by using conventional techniques, e.g. powder, solution, or melt blending. Lotsorb UV 1577 can be used alone or in a  variety of blends.

Physical Properties

 Melting Point                          148 - 150℃  

Flashpoint                                not applicable

 Vapor Pressure (25℃  )         9 E-10 Pa

 Solubility (20℃  g/l 

n-Hexane                                 0.7

 Acetone                                 3.1 

Methylene chloride                169

 Chloroform                           254 

Toluene                                  51 

Ethanol                                  0.2 

Ethylacetate                           6.6 

Methylmethacrylate              1.5 

Volatility Pure substance; TGA, heating rate 20 °C/min in air 

Weight Loss (%)      Temparature ℃ 

1.0                               300 

5.0                               335 

10.0                             353

Absorption Spectrum (10 mg/l, Chloroform)

Lotsorb UV 1577 exhibits strong absorbance in  the 300-400 nm region and minimal absorbance in the visible region (> 400 nm) of the spectrum. The absorption maxima are at  274 nm and 341 nm (e = 22’000 l/mol·cm)  in chloroform solution.

Packaging and handling 

Packaging: 20 or 25Kg/Carton       

Store the product in a cool, dry, well-ventilated area away from incompatible materials. Unless stated, proper storage will permit usage of the product for 12 months from the manufacture date. For additional handling and toxicological information, consult the Material Safety Data Sheet.