TINUVIN® 384  Light Stabiliser

TINUVIN 384-2 is a liquid UV absorber of the hydroxyphenylbenzotriazole class developed for coatings. Its very high thermal stability and environmental permanence makes it suitable for coatings exposed to high bake cycles and/or extreme environmental conditions.It has been designed to fulfill the high performance and durability requirements of automotive and industrial high quality finishes. Its broad UV absorption allows efficient protection of light sensitive base coats or substrates such as wood and plastics.

Chemical Composition
    95% Benzenepropanoic acid, 3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxy-, C7-9-branched and linear  alkyl esters
    5% 1-methoxy-2-propyl acetate
Molecular weight: 451.6  CAS No. 127519-17-9

Physical Properties Appearance: pale yellow liquid
Dynamic Viscosity at 20°C: 3200 mPa.s
Density at 20°C: 1.0718 g/cm3
Miscibility (g/100 g solution) at 20°C:
butanol > 30
butylcarbitol > 30
Ethyl glycol acetate > 30
Butyl glycol acetate > 30
Methyl ethyl ketone > 30
1-methoxypropylacetate-2 > 30
Solvesso 1001) > 30 1) Trade Mark of Esso
Solvesso 1501) > 30
n-hexane > 30
water < 0.1
Application TINUVIN 384-2 is recommended for:
·  automotive coatings
·  general industrial applications, i.e. coil coatings, wood coatings.
The liquid form of TINUVIN 384-2 provides easy incorporation into water borne systems.
The performance provided by TINUVIN 384-2 can be enhanced when used in combination with a HALS stabilizer such as TINUVIN 292 or TINUVIN 123. These combinations improve the durability of clear coats by inhibiting or retarding the occurrence of failures such as gloss reduction, cracking, color change, blistering and delamination.
The amount of TINUVIN 384-2 required for optimum performance should be determined in trials covering a concentration range.
Recommended concentrations :
1.0 - 3.0 % TINUVIN 384-2
+ 0.5 - 2.0 % TINUVIN 123, TINUVIN 144 or TINUVIN 292
Concentration of stabilizer based on % weight of binder solid