Light stabilizer UV622

الوصف

Chemical Name : Butanedioic acid, polymer with *-hydroxy*2,2,6,*-tetramethyl**-piperidine ethanol
Struture :
Molecular Formular : C*5n*1H*5n*4O4n*1N n
Molecular Weight : Mn=***0~***0
CAS NO :  *********0
The sale code name : YS **2
Physical and Chemical Properties:
Appearance and behavior : white to slightly yellow powder , odorless
Loss on drying(%) : ≤0.5
Transmittance : **5nm    ≥*5.0 ;   **0nm    ≥*8.0
Clarity : transparent solution
PH-Value (1% suspension in water *0~*5℃) : 6.3
Melting/Freezing temperature : *0~*0℃(softening range)
Density(*0℃) : ca 1.*2g/cm3
Flash Point : >**0℃
Ignition temperature : **0℃
Ash : ≤0.1%
Softening point : *5~*0℃
Water solubility (*0℃) : ca 1.6mg/L
Vapor pressure (*0℃) : 2.5E*6 Pa
Partition coefficient (Log Pow, *0~*5℃) : 5.2
Introduction :
YS **2 is the low volatility and minimal migration , because of its oligomeric structure with high molecular weight. Furthermore YS **2 is effective as antioxidant and contributes significantly to the long term heat stability of polyolefins and tackifier resins.
Application :
YS **2 areas of application include polyolefins(PP , PE) , olefin copolymers such as EVA as well as blends of polypropylene with elastomers. In addition YS **2 is highly effective in polyacetals , polyamides and polyurethane applications.
The effectiveness of YS **2 surpasses significantly that of UV absorbers , particularly in pigmented systems.
Guidelines for use :
Thick sections UV stabilization of HDPE , LLDPE , LDPE and PP 0.*5~0.5%
Films            UV stabilization of LLDPE and LDPE          0.1~1.2%
Tapes            UV stabilization of HDPE and PP             0.2~0.8%
Fibers           UV stabilization of PP fibers              0.1~1.0%
Handling and Safety :
In accordance with good industrial practice , handle care and prevent contamination of the environment. Avoid dust formation and ignition sources .For more detailed information please refer to the material safety data sheet.