- CAS NO: 70624-18-9
- Appearance: white powder or granules
- Transmittance: ≥93% (425nm)
- ≥95% (500nm)
- Volatile content: ≤1.0%
- Ash content: ≤0.1%
- Molecular weight (MN): >2500 (relative to polystyrene)
- Physical and chemical properties: Softening point: 110℃-130℃
- Bulk density: 548-646 (g/L)
- Relative density: 1.01 (20℃)
- Starting weight loss temperature: >270℃
- Usage amount is 0.2%
- Common packaging specifications: 25KG paper drum
- Solubility: Soluble in acetone, toluene, xylene, benzene, ethyl acetate, hexane, chloroform and other organic solvents, slightly soluble in methanol, insoluble in water
Product introduction:
Light stabilizer 944 is a polymerized high molecular weight hindered amine light stabilizer for plastic products. It can be used in polyolefin plastics (such as PP, PE), olefin copolymers (such as EVA and mixtures of propylene and rubber, etc.), and its excellent effect can be shown in cross-linked polyethylene.
In addition to polyolefin plastics, it can also be used in polyphenylene ether compounds (PPE), polyacetals, polyamides, polyurethanes, soft and hard PVC and PVC blends, etc. In addition, light stabilizer 944 also has good effects on styrenes, rubbers and adhesives
Light stabilizer 944 has a coordinated effect when used in combination with ultraviolet absorbers. Due to the special structure of the polymer, its average molecular weight can reach 3000. It can be used in systems that require low volatility and a small amount of migration, especially in films and fibers. Light stabilizer 944 has the effect of an antioxidant and has a long-term thermal stabilization effect on polymers. The recommended usage in greenhouse film production is 0.2%
Note:
Sulfur or halogen-containing compounds may affect the effect of light stabilizer 944. Some stabilizers, pesticides and flame retardants may produce side reactions with light stabilizer 944. If you need to use it with such substances, it is recommended to conduct a small test first to ensure the effect.
Storage and packaging: Light stabilizer 944' is stable in nature and has no special storage requirements. Avoid high temperature and humidity during storage.
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