Light Stabilizer 622

1. light stabilizer 622
2. Cas no.: 65447-77-0
3. Appearance and behaviour White to slightly yellow powder, odorless

                Light Stabilizer 622
Chemical Name  Butanedioic acid, dimethylester, polymer with 4-hydroxy -2,2,6,6-tetramethyl-1-piperidine ethanol.
CAS Number 65447-77-0
Applications YS 622 areas of application include polyolefins (PP, PE), olefin copolymers such as EVA as well as blends of polypropylene with elastomers.
Features / Benefits The effectiveness of YS 622 surpasses significantly that of UV Absorbers, particularly in pigmented systems. Combinations of YS 622 with UV absorbers.
Guidelines for use   
Thick sections  UV stabilization of HDPE, LLDPE, LDPE and PP 0.15-0.5%
Films  UV stabilization of LDPE and LLDPE   0.1-1.2%
Tapes  Ustabilization of HDPE and PP     0.2-0.8%
Fibers  UV stabilization of PP fibers          0.1-1.0%
Physical and Chemical Properties
Appearance and behaviour White to slightly yellow powder, odorless
PH-value (1% suspension in water 20~25oC)  6.3
Melting / freezing temperature  50~70 (softening range)
Boiling point/ range  not applicable
Density (20oC) ca  1.22g/cm3
Flash point >250
Ignition temperature 370
Oxidizing properties not tested
Self-ignition temperature not tested
Water solubility (20oC) ca  1.6mg/L
Vapor pressure (20oC)  2.5 E-6 Pa
Partition coefficient (Log Pow, 20~25oC)  5.2
Explosive properties  not tested

Update Date:2011-2-24 20:58:20