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Benzotriazole Based Ultraviolet Absorbers

PowerSorb™ 384-2

3-(2H-Benzotriazolyl)-5-(1,1-di-methylethyl)-4-hydroxy-benzenepropanoic acid octyl esters.

Chemical Structure
Introduction / Features
PowerSorb™ 384-2 is a liquid UV absorber of the hydroxyphenylbenzotriazole class developed for coatings.
Physical Properties
Chemical Name: 3-(2H-Benzotriazolyl)-5-(1,1-di-methylethyl)-4-hydroxy-benzenepropanoic acid octyl esters
CAS No.: 127519-17-9
EINECS No.: 407-000-3
Formula: C27H37N3O3
Molecular Weight: 452
Dynamic Viscosity [20°C]: 3200 mPa.s
Density[20°C]: 1.0718 g/cm3
Garnder(%): Max.7
Color of Solution 460nm(%): Min.95
Color of Solution 500nm(%): Min.97
Appearance: Pale Yellow Liquid
Min. Purity: 93%

Solubility (20°C) % w/w
butanol: >30
butylcarbitol: >30
Ethyl glycol acetate: >30
Butyl glycol acetate: >30
Methyl ethyl ketone: >30
1-methoxypropylacetate-2: >30
Solvesso 1001): >30
Solvesso 1001): >30
n-hexane: >30
Water: <0.1

Applications
PowerSorb™ 384-2 is recommended for: automotive coatings, general industrial applications, i.e. coil coatings, wood coatings. The liquid form of PowerSorb™ 384-2 provides easy incorporation into water borne systems. The performance provided by PowerSorb™ 384-2 can be enhanced when used in combination with a HALS stabilizer. 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 PowerSorb™ 384-2 required for optimum performance should be determined in trials covering a concentration range.
Packings
PowerSorb™ 384-2 is supplied in 25 kg drum.
Technical Library
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