Light stabilizer 292

• CAS: 82919-37-7
• Catalog Number: ACM82919377
• Category: Main Products
• Molecular Weight: 369.54
• Molecular Formula: C21H39NO4
• Appearance: Liquid

Case Study

Comparison of HALSs Such as Methyl 1,2,2,6,6-Pentamethyl-4-Piperidyl Sebacate on the Properties of Refined Oriental Lacquer

Chang, Chia-Wei, et al. Polymers 12.4 (2020): 990.

The research assessed how refined oriental lacquers (RL) performance improved with various hindered amine light stabilizers (HALS) at a concentration of 2 phr while monitoring their influence on coating and film properties.
Sample Preparation:
The following HALS compounds were used:
· H95: Bis(1-octyloxy-2,2,6-tetramethyl-4-piperidyl) sebacate (Mw 737 g/mol, pH 5.3)
· H60: Bis(1,2,2,6,6-pentamethyl-4-piperidinyl)-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl] butylmalonate (Mw 685 g/mol, pH 7.1)
· H90: Bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate (Mw 480 g/mol, pH 9.1)
· H93: Mixture of methyl 1,2,2,6,6-pentamethyl-4-piperidyl sebacate and bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate (1:3 mole ratio, Mw 404 g/mol, pH 9.1)
The HALS samples dissolved in ultrasonic dispersion were mixed with 10 mL of xylene. The solution mixed with RL material followed by stirring for 10 minutes.
Key Findings:
The addition of 2 parts per hundred resin (phr) of H90 containing -NH or H60 containing -NCH3 led to substantial improvements in RL film lightfastness. The introduction of HALS to RL resulted in a pH increase which boosted the activity of laccase-catalyzed reactions. The concurrent action of HALS radical scavenging function blocked the oxidative polymerization of RL side chains. The modifications affected both the duration of curing alongside the film characteristics. The HALS H90 demonstrated superior lightfastness while maintaining RL's properties and reducing drying time when tested at 2 phr levels proving to be the best additive choice.

Custom Q&A

What is the molecular formula of Methyl 1,2,2,6,6-pentamethyl-4-piperidyl sebacate?

The molecular formula is C21H39NO4.

What is the molecular weight of Methyl 1,2,2,6,6-pentamethyl-4-piperidyl sebacate?

The molecular weight is 369.5 g/mol.

What is the IUPAC name of Methyl 1,2,2,6,6-pentamethyl-4-piperidyl sebacate?

The IUPAC name is 1-O-methyl 10-O-(1,2,2,6,6-pentamethylpiperidin-4-yl) decanedioate.

What is the InChIKey of Methyl 1,2,2,6,6-pentamethyl-4-piperidyl sebacate?

The InChIKey is OTCWVYFQGYOYJO-UHFFFAOYSA-N.

What is the Canonical SMILES of Methyl 1,2,2,6,6-pentamethyl-4-piperidyl sebacate?

The Canonical SMILES is CC1(CC(CC(N1C)(C)C)OC(=O)CCCCCCCCC(=O)OC)C.

What is the CAS number of Methyl 1,2,2,6,6-pentamethyl-4-piperidyl sebacate?

The CAS number is 82919-37-7.

What is the XLogP3-AA value of Methyl 1,2,2,6,6-pentamethyl-4-piperidyl sebacate?

The XLogP3-AA value is 4.6.

How many hydrogen bond acceptor count does Methyl 1,2,2,6,6-pentamethyl-4-piperidyl sebacate have?

It has 5 hydrogen bond acceptor count.

What is the topological polar surface area of Methyl 1,2,2,6,6-pentamethyl-4-piperidyl sebacate?

The topological polar surface area is 55.8 Ų.

How many rotatable bond counts does Methyl 1,2,2,6,6-pentamethyl-4-piperidyl sebacate have?

It has 12 rotatable bond counts.