1.      421-photosensitive unsaturated para-phenylene polyester resin

 

Chemical Name: para-phenylene polyester

Shortened form: photosensitive resin, para-phenylene resin

   Application: In the help of the light intensifying agent and the effect of close ultraviolet light 300-400nm, it can polymerize with vinyl or bi-vinyl cross-linking agent through its free radicals, and produce reticular high polymer, which is used in the making of liquid resin printing plates.

 

   Quality Index:

   Appearance: light brown, transparent, thick liquid,

without mechanical admixture     Color <= type 8

   Viscosity: 20-40 second per 20C   

   Acid Value: 30-50mg  KOH/g     

   Capacity: 100Mt per year  

   Packing: 3kg, 5kg, 10kg per drum

   Storage and prevention: store in dry shady ventilated place, away from heat and fied sources. In room temperature, away from the light, the storage life is 12 months.