1. Basic Product Information
表格
| Item |
Parameter Details |
| Product Name |
Antioxidant UV-225 |
| Product Form |
White crystalline powder |
2. Core Quality Specifications
表格
| Test Item |
Standard Specification |
Test Method |
| Appearance |
White or off-white crystalline powder |
Visual inspection |
| Volatile Matter |
≤0.5% |
Gravimetric method, 105 ℃ / 2 h |
| Ash Content |
≤0.1% |
High-temperature ignition method |
| Light Transmittance @425 nm |
≥96% |
10 g/100 mL solution |
| Light Transmittance @500 nm |
≥98% |
10 g/100 mL solution |
| Melting Point |
≥110 ℃ |
— |
3. Physical and Chemical Properties
This product is a composite high-efficiency antioxidant with excellent thermal stability. It does not decompose and features low volatility within the processing temperature range of 200–280 ℃. It is readily soluble in organic solvents such as xylene, ethyl acetate and cyclohexane, as well as PVC ester and alkane stabilizer systems; completely insoluble in water. It exhibits excellent hydrolysis resistance and extraction resistance with outstanding compatibility. It remains stable under ambient storage conditions, is non-toxic and low-odor, suitable for processing light-colored and transparent polymer articles.
Synergistic Effect: Classic blend of hindered phenol and phosphite. It addresses both thermal-oxidative aging during processing and long-term storage aging, delivering much higher antioxidant efficiency than single-component antioxidants.
Low Discoloration: High purity and low impurity content. Minimal color variation during processing and service, without affecting the whiteness and transparency of finished products. Ideal for high-whiteness PVC and polyolefin articles.
Stabilized Melt Performance: Effectively inhibits polymer degradation and crosslinking, stabilizes melt flow rate, and prevents cracking, yellowing and performance deterioration of products.
Wide Compatibility: It can be perfectly compounded with fluorescent whitening agents (FP-127, OB), UV absorbers (UV326/328/400), hindered amine light stabilizers, and various PVC liquid/powder stabilizers without antagonistic reactions.
Long-lasting Weather Resistance: Effectively retards thermal-oxidative aging of materials and greatly extends service life under outdoor and high-temperature conditions.
Scope of Application
Widely used in various polymer materials and additive systems. Core applicable scenarios are as follows:
- Polyolefin materials: PP, PE, EVA, polybutene, etc.
- Engineering plastics: ABS, PS, AS, PC, PBT, TPU, elastomers
- Additive systems: PVC liquid/powder composite stabilizers, synthetic rubbers, adhesives, industrial oils
- High-end light-colored products: High-whiteness PVC profiles, pipes, films and artificial leather; effectively inhibits reversion yellowing
6. Recommended Dosage
表格
| Application System |
Addition Ratio |
| Polyolefin resins |
0.1%～0.3% |
| ABS/PS/AS engineering plastics |
0.2%～0.4% |
| Elastomers / high-end engineering plastics |
0.2%～0.5% |
| PVC liquid composite stabilizers |
0.15%～0.3% |
7. Application Method
Powder Processing: Directly high-speed mixed uniformly with resins and various additives, then subject to extrusion, granulation and molding.
Special for PVC Liquid Stabilizers: Pre-dissolve in white oil, alkane and ester solvents by heating at 70–80 ℃. Stir until clear, then incorporate alcohols, polyethers, metal soaps and other components. The system remains stable without precipitation.
Synergistic Combination: Recommended to be compounded with UV absorbers and fluorescent whitening agents to achieve multiple effects including anti-aging, anti-reversion yellowing and high whiteness.
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