NOVARON Inorganic Antibacterial Agent for Plastics Processing
Features
• High heat resistance; can be compounded directly into resins
• Excellent resistance to discoloration
• Application-specific grades available
Metal ions act on enzymes inside bacterial cells,
inhibiting their metabolic activity
Grade
| Grade | Characteristics | Average Particle Size (μm) | Specific Gravity | Refractive Index |
|---|---|---|---|---|
| VZ100 | General-purpose, zinc glass-based | 5 | 3.6 | − |
| AGZ330 | General-purpose, silver-based | 1 | 4.2 | − |
| VZN300 | For ABS resin | 2 | 4.3 | − |
| VZ600 | For transparent ABS resin | 9 | 3.1 | 1.54 |
| VZ900 | For transparent GPPS and PC resins | 9 | 3.4 | 1.58 |
Includes products registered with SIAA (Society of International Sustaining Growth for Antibacterial Articles)
Antibacterial Performance
Minimum Inhibitory Concentration (MIC)
* Minimum concentration of antibacterial agent required to inhibit cell proliferation (μg/mL)
| Microorganism | Characteristics | VZ100 | VZN300 |
|---|---|---|---|
| Escherichia coli | Indicator organism for food and drinking-water contamination | 800 | 800 |
| Escherichia coli O157:H7 | Vero toxin-producing bacterium that can cause food poisoning | 800 | 800 |
| Methicillin-resistant Staphylococcus aureus (MRSA) | Pathogen associated with healthcare-acquired infections | 800 | 400 |
| Salmonella | Bacterium that can cause typhoid fever and food poisoning | 800 | 1600 |
| Staphylococcus aureus | Bacterium that can cause suppuration, sepsis, and food poisoning | 200 | 200 |
| Klebsiella pneumoniae | Bacterium that can cause pneumonia, urinary tract infections, and sepsis | 800 | 800 |
Processing Examples
PP (Polypropylene) Processing Example — Addition Rate: 0.3%
* Compared with conventional antibacterial agents:
• Antibacterial performance is maintained after the water-resistance test.
• Minimal color difference after weathering (low susceptibility to discoloration).
JIS Z 2801
• Water-resistance test: 50 ± 5°C for 16 hours (SIAA antibacterial durability test, water-resistance level 2).
• Weathering test: 8 hours of sunshine carbon-arc lamp exposure.
Transparent ABS Resin Processing Example — Addition Rate: 0.5%
* Compared with conventional antibacterial agents:
• Equivalent antibacterial performance is maintained both initially and after weathering.
• High antibacterial performance is maintained after the water-resistance test.
• Minimal impact on resin transparency.
JIS Z 2801
• Water-resistance test: 50 ± 5°C for 16 hours (SIAA antibacterial durability test, water-resistance level 2).
• Weathering test: 8 hours of sunshine carbon-arc lamp exposure.
Safety
| Test Item | Test Conditions | Result |
|---|---|---|
| Acute Oral Toxicity | OECD423 | Rat LD50 > 5,000 mg/kg |
| Mutagenicity | OECD471 | Ames test: Negative |
| Primary Skin Irritation | OECD404 | P.I.I=0.0 |
| Skin Sensitization | OECD406 | GPMT: Negative |
The above data apply to VZ100.