UV Green 018 for coatings and plastics
UV Green 018® is a high-performance hydroxyphenyl-triazine (HPT) UV absorber in a yellowish to light brownish viscous liquid form, developed for long-term UV protection in coatings, plastics and films that are exposed to demanding outdoor and high-temperature conditions. It is chemically equivalent to Tinuvin® 477, the well-known BASF reference for HPT UV absorbers, making it a reliable alternative for applications requiring proven performance.
With strong absorption in both the UV-A and UV-B range, combined with excellent thermal stability and low volatility, UV Green 018 (or Tinuvin 477) is particularly suited for transparent and durable polymer systems.
As an advanced UV absorber for plastics and coatings, UV Green 018 helps protect materials against discoloration, surface degradation, and loss of mechanical properties, while preserving optical clarity and gloss. Because it remains stable at high temperatures, it helps materials maintain their strength and appearance for years, just like Tinuvin 477.
Technical background
UV Green 018 functions as a hydroxyphenyl-triazine UV absorber, converting harmful ultraviolet radiation into low-energy heat before it can damage polymer chains. This mechanism prevents photo-oxidative degradation, cracking, chalking and colour fading.
Compared to traditional UV absorber technologies such as benzotriazoles or benzophenones, HPT-based UV absorbers like UV Green 018 (Tinuvin 477) offer:
- higher thermal stability
- significantly lower volatility
- improved long-term retention in the polymer matrix
This makes UV Green 018 suitable for high-temperature processing in coatings, films and plastics. That’s why it’s commonly used in high-performance coatings and compatible plastic systems, where both long-lasting durability and clear, transparent appearance are important.
Chemical identity of UV Green 018
UV Green 018 is a high-molecular-weight hydroxyphenyl-triazine UV absorber, designed for demanding industrial formulations. The chemical name of UV Green 018 is 2,4,6-Tris[4-(1-octyloxycarbonyl)ethyloxy)-2-hydroxyphenyl]-1,3,5-triazine.
CAS number: 348144-63-8
Molecular formula: C₆₅H₉₅N₃O₁₄
Molecular weight: 1142.47 g/mol
Product synonyms: Tinuvin® 477 (BASF reference), UV Green 018, Hydroxyphenyl-triazine UV absorber, HPT UV absorber
Because of its molecular structure, UV Green 018 (Tinuvin 477), a yellowish to light brownish viscous liquid, blends easily into transparent coatings, plastics and films. It remains stable even during high-temperature processing or long-term exposure to sunlight, providing durable UV protection in demanding applications
Performance advantages
By capturing both UV-A and UV-B radiation, UV Green 018 (Tinuvin 477) helps prevent yellowing and weakening of materials. This protects polymers and coatings from sunlight-induced degradation, reducing yellowing, embrittlement, and surface damage in outdoor or sun-exposed applications.
The product is made for clear and transparent materials. It keeps light passing through and preserves visual clarity, making it a good choice for applications where look, gloss and consistent colour matter.
UV Green 018 stays stable during extrusion, moulding and baking, maintaining consistent UV protection throughout the product’s lifetime.
UV Green 018 is non-migrating in coatings and films, contributing to long-term surface quality and durability. This is particularly important for coatings, films and plastics used in outdoor or high-end applications.
UV Green 018 performs exceptionally well in combination with HALS stabilisers (Hindered Amine Light Stabilisers), resulting in enhanced resistance to UV degradation, improved colour stability and extended service life.
UV Green 018 is suitable for a wide range of applications requiring durable UV resistance and high transparency.
Coatings
- Automotive clear and pigmented coatings
- Industrial topcoats
- Architectural and decorative coatings
Plastics
- Polycarbonate (PC)
- PMMA and polyesters
- PVC and polyolefins
- Engineering plastics requiring high clarity
Films, adhesives & sealants
- Optical films and sheets
- Outdoor-exposed thin films
- Adhesives and sealants where UV protection is important
Technical specifications
| Property | Specification | Notes / Significance |
|---|---|---|
| CAS Number | 348144-63-8 | Unique identifier for Tinuvin 477 in chemical databases |
| Chemical Name | Hydroxyphenyl-triazine derivative | HPT class UV absorber |
| Molecular Formula | C₆₅H₉₅N₃O₁₄ | Defines chemical composition |
| Molecular Weight | 1142.47 g/mol | High molecular weight, low migration |
| Appearance | Yellowish to light brownish viscous liquid | Suitable for clear systems |
| UV Absorption | UV-A & UV-B | Broad-spectrum protection |
| Volatility | Low | Stable during high-temperature processing |
| Thermal Stability | Excellent | Suitable for extrusion and baking |
| Dangerous Goods | No | Standard storage and transport |
Notes
Values are based on standard production batches of UV Green 018 and intended for general guidance. Testing in the specific formulation is recommended.
Storage conditions
- Store in a cool, dry and well-ventilated area
- Keep containers tightly closed
- Avoid direct sunlight and heat sources
- Recommended storage temperature: below 25 °C
Handling guidelines
- Follow standard industrial hygiene practices
- Avoid contact with skin or eyes and inhalation of vapours if mist/aerosol is formed
- Ensure proper ventilation during handling
UV Green 018 around you
UV Green 018 protects coatings against loss of gloss, colour fading and surface degradation.
Examples in everyday life
- Automotive clear coats with long-lasting shine
- Outdoor architectural coatings
- Industrial protective finishes
The UV absorber keeps materials clear while protecting them from UV damage.
Examples in everyday life
- Clear plastic panels and sheets
- Optical and decorative films
- Transparent protective covers
UV Green 018 ensures durability in applications exposed to sunlight and weathering.
Examples in everyday life
- Exterior building components
- Outdoor signage and panels
- Protective layers in construction materials
Disclaimer
The information provided on this page is based on current knowledge and intended for general guidance. UV Green 018 should be tested in the intended application to confirm suitability, performance and compliance with regulatory requirements. Partners in Green Chemicals makes no warranties regarding completeness or applicability for specific uses.