2-(2H-Benzotriazol-2-yl)-6-(1-methyl-1-phenylethyl)-4-(1,1,3,3-tetramethylbutyl)phenol

• CAS: 73936-91-1
• Catalog Number: ACM73936911-2
• Category: Main Products
• Molecular Weight: 442
• Molecular Formula: C29H35N3O
• Synonyms: TINUVIN 928
• IUPAC Name: 2-(benzotriazol-2-yl)-6-(2-phenylpropan-2-yl)-4-(2,4,4-trimethylpentan...
• Melting Point: 108.0-112.0 °C
• Density: 1.07
• Appearance: Yellow powder
• Application: 2-(2H-Benzotriazol-2-yl)-6-(1-methyl-1-phenylethyl)-4-(1,1,3,3-tetramethylbutyl)phenol is a sophisticated UV absorber specially formulated for high-performance coatings. Its broad absorption capabilities are designed to effectively protect coatings and other photosensitive materials. The compound's high solubility, combined with its resistance to high temperatures and exceptional environmental durability, make it particularly well-suited for applications subject to high temperature curing processes, such as powder and coil coatings, as well as industrial and automotive coatings. Furthermore, its protective properties are further enhanced when used with a HALS stabilizer like UV-292 or UV-123, making it an indispensable component for ensuring longevity and performance in demanding environments.
• Exact Mass: 441.27800
• Physical State: Pale yellow crystalline powder

Case Study

UV Absorber UV-928 Enhances Asphalt UV Aging Resistance in Composite Modification

Liu, Zhisheng, et al. Applied Sciences 14.22 (2024): 10250.

This case study evaluated the UV absorber UV-928 used in a composite modifier (ULDHs, combining UV-928 with Layered Double Hydroxides - LDHs) to improve the UV aging resistance of 70# base asphalt. The performance of asphalt modified with this composite (ULMA) was compared against base asphalt (OMA) and asphalt modified solely with LDHs (LMA) after UV aging, focusing on physical, rheological, and chemical properties.
· Key Findings:
Analysis of functional group changes (Carbonyl Index - CI and Sulfoxide Index - SI) via FTIR showed the lowest rate of increase for ULMA (OMA > LMA > ULMA), demonstrating ULMA's superior UV aging resistance. Molecular dynamics modeling revealed that the UV-928/LDHs composite reduced the asphalt's free volume fraction by 2.81% and significantly increased its diffusion coefficient by approximately 65.13% compared to base asphalt.
· Mechanism of Improvement:
Evaluation of solubility parameters indicated UV-928 had the best compatibility and thermal stability with asphalt. Its inclusion in the composite modifier (ULDHs) improved compatibility compared to LDHs alone, reducing the solubility difference and enhancing system thermal stability. The composite effect of UV-928 and LDHs densified the asphalt structure (reduced free volume) and increased molecular mobility (higher diffusion coefficient), mitigating UV damage during aging.

Custom Q&A

What is the IUPAC name of the keyword?

The IUPAC name of the keyword is 2-(benzotriazol-2-yl)-6-(2-phenylpropan-2-yl)-4-(2,4,4-trimethylpentan-2-yl)phenol.

What is the molecular formula of the keyword?

The molecular formula of the keyword is C29H35N3O.

What is the molecular weight of the keyword?

The molecular weight of the keyword is 441.6 g/mol.

What are the synonyms of the keyword?

The synonyms of the keyword are 73936-91-1, UV absorber-928, Phenol, 2-(2H-benzotriazol-2-yl)-6-(1-methyl-1-phenylethyl)-4-(1,1,3,3-tetramethylbutyl)-.

What is the CAS number of the keyword?

The CAS number of the keyword is 73936-91-1.

How many hydrogen bond donor counts does the keyword have?

The keyword has 1 hydrogen bond donor count.

How many hydrogen bond acceptor counts does the keyword have?

The keyword has 3 hydrogen bond acceptor counts.

How many rotatable bond counts does the keyword have?

The keyword has 6 rotatable bond counts.

What is the XLogP3-AA value of the keyword?

The XLogP3-AA value of the keyword is 9.2.

What is the topological polar surface area of the keyword?

The topological polar surface area of the keyword is 50.9Ų.