CAS No . 31570 - 04 – 4 Phosphite Antioxidant irgafos 168 for PE /
Quick Detail :
ANTIOXIDANT168 is a trisarylphosphite processing stabiliser . It is
a highly effective , low - volatile and hydrolysis resistant
antioxidant for coating resins . It protects the resin polymer
against oxidation during resin synthesis , manufacturing of the
paint , processing ( thermal curing and overbaking ) and the
designed life - time of the final coating . ANTIOXIDANT168 provides
excellent protection against discolouration and change of physical
properties caused by excessive heat exposure .
Name : ANTIOXIDANT 168
CAS No . : 31570 - 04 - 4
Chemical name : THIODIPROPIONIC ACID DISTEARYL ESTER
Use:stabilize polyesters , polycarbonates , polyamides ,
polystyrene , and elastomers . Use levels can range from 0 . 10 to
0 . 80 % based on the polymer .
ANTIOXIDANT 168 provides outstanding thermal and colour stability
to a variety of coating resins upon exposure to high temperatures
during synthesis and subsequent processing . It is particularly
suited to stabilise alkyd and polyester resin based coating systems
that are used in applications such as
• industrial powder coatings ( electrical and gas oven heating )
• coil coatings
• other industrial high bake coatings
A special feature of the ANTIOXIDANT 168 phosphite stabiliser is
its efficiency in presence of NOx gases and thus its potential to
function in critical gas oven curing conditions .
In electrical ovens and gas fired ovens where the coated substrates
being exposed to only very low NOx concentrations , a combination
ANTIOXIDANT168 with hindered phenolic antioxidants such as
ANTIOXIDANT1076 or ANTIOXIDANT1010 typically leads to a synergistic
performance improvement . In this case phenol - free synergistic
antioxidant systems can be obtained by using ANTIOXIDANT 168 in
combination with hindered amine light stabilisers ( HALS ) such
aUV292 or UV622 .
The amount of ANTIOXIDANT168 required for optimum performance
should be determined in trials covering a concentration range .
|Assay ( GC )||99 % min|
|Melting Point||183 - 187 ℃|
|Volatile||0 . 3 % max|
|Transmittance||425nm 97 . 0 % min|
|500nm 98 . 0 % min|
Competitive Advantage :
Protects organic polymers as well as pigments from UV light ,
improving and preserving the technical and visual performance .
Hongkun is one of the biggest manufacturers of UV Absorber in China
with the same quality of BASF , and the application effect has been
proved by many customers .