Chemical Name : Butanedioic acid, polymer with4-hydroxy-2,2,6,6-tetramethyl-1-piperidine ethanol
Struture :
Molecular Formular : C15n+1H25n+4O4n+1N n
Molecular Weight : Mn=3100~4000
CAS NO : 65447-77-0
The sale code name : YS 622
Physical and Chemical Properties:
Appearance and behavior : white to slightly yellow powder ,odorless
Loss on drying(%) : ≤0.5
Transmittance : 425nm ≥95.0 ; 500nm ≥98.0
Clarity : transparent solution
PH-Value (1% suspension in water 20~25℃) : 6.3
Melting/Freezing temperature : 50~70℃(softening range)
Density(20℃) : ca 1.22g/cm3
Flash Point : >250℃
Ignition temperature : 370℃
Ash : ≤0.1%
Softening point : 55~70℃
Water solubility (20℃) : ca 1.6mg/L
Vapor pressure (20℃) : 2.5E-6 Pa
Partition coefficient (Log Pow, 20~25℃) : 5.2

Introduction :
YS 622 is the low volatility and minimal migration , because of itsoligomeric structure with high molecular weight. Furthermore YS 622is effective as antioxidant and contributes significantly to thelong term heat stability of polyolefins and tackifier resins.

Application :
YS 622 areas of application include polyolefins(PP , PE) , olefincopolymers such as EVA as well as blends of polypropylene withelastomers. In addition YS 622 is highly effective in polyacetals ,polyamides and polyurethane applications.
The effectiveness of YS 622 surpasses significantly that of UVabsorbers , particularly in pigmented systems.

Guidelines for use :
Thick sections UV stabilization of HDPE , LLDPE , LDPE and PP0.15~0.5%
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 andprevent contamination of the environment. Avoid dust formation andignition sources .For more detailed information please refer to thematerial safety data sheet.