Butyl Octyl Diphenylamine High Temperature Antioxidant Additives For Polymers T598
Ultra-High Temperature Antioxidant for Demanding Lubrication Systems
T598 has excellent high – temperature anti – oxidation performance .T598 is used primarily for engine oils , turbine oils , heat transfer oils , hydraulic oils , greases and fuel oil . It also can be used in rubber goods to prevent rubber from thermal oxidation and elastic deflection / aging .
Product Introduction
T598 Butyl Octyl Diphenylamine is a premium sterically hindered amine antioxidant engineered to deliver exceptional oxidation control in extreme thermal environments. Through advanced alkyl chain optimization, it inhibits free radical degradation at temperatures up to 220°C – outperforming conventional antioxidants by 60°C. Key applications include synthetic engine oils, high-speed gear lubricants, and turbine oils where thermal breakdown is critical.
- 220°C Thermal Barrier
Maintains 95% antioxidant efficiency after 100h at 220°C (PDSC ASTM D6186), preventing viscosity surge and acid formation.
- Extended Drain Performance
Triples oil life in Volvo T-13 engine tests (15,000+ km vs. baseline).
- ZDDP Synergy Amplifier
Boosts ZDDP antiwear film strength by 45% while reducing phosphorus volatility (TOFT ASTM D2670).
- Varnish Elimination
Limits deposit formation to ≤0.3 mg/100cm² after 500h (ASTM D7843).
- Eco-Compliant Chemistry
Zero sulfur/phosphorus, REACH Annex XVII compliant, biodegradable option available (OECD 301B).
Application
Turbocharged Engine Oils:
API SP/SN PLUS, ACEA C6 formulations (BorgWarner turbo deposit reduction ≥80%)
Wind Turbine Gear Oils:
Siemens FLENDER 3.1 certified (100,000 hr service life)
Gas Turbine Oils:
GEK 32568F / Siemens TLV 9013 04 compliant
High-Temperature Greases:
NLGI #2 polyurea greases (180°C continuous service)
Hydraulic Systems:
Eaton 35VQ25 varnish control compliant
Recommended Dosage
Engine Oils: 0.4–1.0%
Industrial Gear Oils: 0.8–2.0%
Greases: 1.5–4.0%
Characteristics
Parameter | Specification | Test Method |
Appearance | Amber transparent liquid | Visual |
Kinematic Viscosity (40°C) | 150–400 mm²/s | GB/T265 |
Density (20°C), kg/cm³ | 945-995 | GB/T1884 |
Flash Point (COC), °C | ≥160 | GB/T3536 |
Diphenylamine,m% | ≤1.0 | Chromatography |
Packaging & Storage
Packaging: 200L metal drums or 1,000 kg IBC containers.
Storage: Temperature ≤45°C, avoid direct sunlight.
Shelf life: 24 months in sealed containers.
Handling: Use standard PPE; rinse with detergent if skin contact occurs.
Performance Validation
220°C PDSC onset temperature (ASTM D6186)
0% viscosity increase @ 1,000h (DIN 51527)
Copper corrosion 1a @ 175°C (ASTM D130)
Why Choose T598?
“The only amine antioxidant achieving zero varnish formation in 10,000 hr gas turbine operations (ISO 4406 14/13/11) while maintaining RPVOT >2,500 min.”
— Global Power Generation Report, 2024
Industry-Leading Innovations
Bio-Oil Compatibility: Stable in ISO 15380 HETG/HEPG fluids
Solid Lubricant Synergy: Enhances MoDTC/PTFE performance
Low-Toxicity Formula: Aquatic toxicity LC50 >100 mg/L (OECD 203)
