LOTSORB UV 400 (CAS:153519 – 44 – 9 )

Product Description

Lotsorb UV 400 is a liquid hydroxyphenyl-triazine (HPT) UV absorber designed to fulfill the high  performance and durability needs of waterborne, solventborne, and 100% solids automotive  and industrial finishes. Its low color and stability make it an excellent choice for all coatings  where low color characteristics are ideal for use in combination with the newest generation  photoinitiators to provide durable UV clear coats.

Key Features & Benefits

- Hydroxyphenyl-triazine with high absorbance in the UV-B region  

- Low color, low migration  

- Minimal interaction with metal catalysts and amine crosslinkers  

- Excellent photo-permanence

Chemical Structure

Lotsorb UV 400 is a mixture of: 2-[4-[(2-Hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6- bis(2,4-dimethylphenyl)-1,3,5-triazine & 2-[4-[(2-Hydroxy-3-tridecyloxypropyl)oxy]-2- hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine   

Lotsorb UV  400 is an 85% solution of the active substance in 1-methoxy-2-propanol

Typical Characteristics

Properties 

CAS No: Active Substance                                153519 – 44 – 9   

              1-Methoxy-2-propanol                      107 – 98 – 2  

              Appearance                                        yellow to light amber viscous liquid 

              Molecular weight                               ~ 647 avg.  Density 1.07 g/cm³ 

              Miscibility                                          Miscible with most customary organic solvents; practically  immiscible with water 

 These typical values should not be interpreted as specifications.

Transmittance Spectrum 

(in chloroform, cell thickness = 1  cm)

Top Line: 0.001%Lotsorb UV 400, corresponds to 0.25% in a 40 µ film  

Second Line: 0.002% Lotsorb UV 400, corresponds to 0.50% in a 40 µ film  

Third Line: 0.004% Lotsorb UV 400, corresponds to 1.00% in a 40 µ film  

Bottom Line: 0.006% Lotsorb UV 400, corresponds to 1.50% in a 40 µ film

Applications

Lotsorb UV 400 a liquid hydroxyphenyl-triazine (HPT) UV absorber that provides excellent performance  in coatings due to:  

• very high thermal stability and performance for coatings exposed to high bake cycles and/or  extreme environmental conditions  

• hydroxy functionality to minimize migration  

• high photo-stability for long life performance  high concentration for maximum efficiency 

Lotsorb UV 400 has been developed as an interaction-free UV absorber for use in amine and/or metal  catalyzed coating systems and coatings applied on base-coats or substrates containing such  catalysts.  

Lotsorb UV 400 is recommended for both solvent- and waterborne automotive OEM and refinish coating  systems, UV cured coatings, and industrial coatings where long life performance is essential.  

The protective effects of Lotsorb  UV 400 can be enhanced when used in combinations with a HALS such  as Lotsorb  LS 123 or Lotsorb LS 292. These combinations improve the durability of clear coats by  retarding gloss reduction, delamination, cracking, and blistering.  

The amount of Lotsorb 400 required for optimum performance should be determined in trials  covering a concentration range.

Recommend Concentrations

1.0 – 3.0 %                                            Lotsorb UV 400

400   +  0.5 – 2.0 %                              Lotsorb  LS 123, Lotsorb LS 144, or Lotsorb LS 292 

 (concentrations are based on weight percent binder solids)

Safety

The usual safety precautions when handling chemicals must be observed. These include the  measures described in Federal, State and Local health and safety regulations, thorough ventilation of  the workplace, good skin care and wearing of protective goggles. 

Packaging

Packaging: 20Kg/Drum

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.