Liquid, easy to add
No milling; blends directly into the coating.
UV-384-2 Liquid UV Absorber Supplier for Coatings
SUNSORB® 384-2 is a liquid benzotriazole UV absorber for solvent-borne and waterborne coatings. It is easy to incorporate and is usually combined with a liquid HALS such as 292 for durable automotive, industrial and wood coatings.
CAS 127519-17-9 · Benzotriazole · Liquid UV absorber
Product Overview
UV-384-2 (C7–C9 branched and linear alkyl esters of 3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxybenzenepropanoic acid) is a liquid, so it blends directly into coatings without milling. It protects both the coating and the substrate underneath, especially wood.
Typical specification. Every shipment is supplied with a batch COA; the limits that apply to your order are confirmed in the quotation and contract.
Key Benefits
Coating durability
Protects gloss and color of the coating and the substrate.
Works with liquid HALS
Typically combined with 292 or 123.
Technical Specifications
Typical specification. Every shipment is supplied with a batch COA; the limits that apply to your order are confirmed in the quotation and contract.
| Parameter | Typical value |
|---|---|
| Product Name | UV Absorber UV-384-2 |
| Brand | SUNSORB® 384-2 |
| CAS No. | 127519-17-9 |
| Chemical Name | Benzenepropanoic acid, 3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxy-, C7–C9 branched and linear alkyl esters |
| Appearance | Light-yellow viscous liquid |
Applications by Material
Pick an application to see how 384-2 is normally used and what to confirm before your trial.
Automotive & Industrial Coatings
Typically 1–3% on binder solids with a liquid HALS.
What to confirm for your application
- Coating type and binder
- Cure conditions
- Durability target
Wood Coatings
Protects wood from UV darkening under clear coats.
What to confirm for your application
- Waterborne or solvent-borne
- Wood species
- Exterior or interior
Inks, Adhesives & Other Coatings
UV absorber for other liquid systems.
What to confirm for your application
- System type
- Compatibility
- Exposure
Packaging & Storage
Packaging
Typically 25 kg pails or 200 kg drums; IBC on request. Confirm the pack in the quotation.
Storage
Keep containers closed, away from heat and direct sun. Warm gently and mix before use if the liquid has thickened in cold weather. See the SDS.
Lead time & terms
Typically 3–15 business days from order confirmation, depending on quantity. FOB, CIF or DAP to major ports.
Technical & Buying Information
UV Absorber UV-384-2 Buyer Guide
Define the exposure
Indoor light behind glass, outdoor temperate climate and desert or tropical exposure need very different packages. Note the target service life and the weathering test you use (xenon or QUV, hours, ΔE or gloss retention).
Match absorber to process and thickness
A UV absorber works by filtering, so it needs enough path length: thick parts need less, thin films and fibers need more and need a low-volatility grade. Check the absorber survives your processing temperature.
Combine with a HALS
For outdoor use the standard approach is UV absorber plus HALS. Send your current package and pigment system and we suggest a starting combination for the trial.
Check regulations before you buy
Some benzotriazoles are restricted in the EU and other markets. Tell us the destination and end use, and we confirm the REACH and food-contact position of the grade before you order.
Request a Quotation for UV Absorber UV-384-2
Start with your material, part thickness, quantity and destination. Add your current UV package and we will quote against it.
| Information | Example |
|---|---|
| Polymer / Material | PP, PE, ABS, compound, masterbatch |
| Application | Injection molding, extrusion, film, fiber |
| Current additive | Grade or supplier you use today |
| Required specification | Your TDS, COA or key limits |
| Quantity | Trial order / monthly / annual volume |
| Packaging | Standard 25 kg or specific requirement |
| Destination | Country and port |
| Documents needed | COA, SDS, REACH, food-contact statement |
Related UV Absorbers & Stabilizers
SUNSORB® 400
Hydroxyphenyl-triazine liquid UV absorber for durable automotive and industrial coatings.
View product →SUNSORB® 1130
Liquid benzotriazole UV absorber for coatings, often paired with liquid HALS.
View product →UV Absorber UV-384-2 FAQ
Is 384-2 suitable for waterborne coatings?
Yes, it is used in both solvent-borne and waterborne systems. Check incorporation method with your formulation.
What dosage is typical?
1–3% on binder solids, usually with 0.5–2% of a liquid HALS.
Can it replace UV-328 in coatings?
It is a common replacement. Re-test durability after switching.
Can I get a sample before ordering?
Yes. Tell us the polymer, the test you plan to run and the quantity you need. Samples ship with a COA so you can compare the lot against your current material.
What if a COA does not match our agreed specification?
Send us the agreed specification and the COA showing the difference (parameter, unit and test method). We check it with the production batch record before you accept the material, and replace or re-test where the lot is out of specification.
Discuss Your UV Absorber UV-384-2 Requirements
Send your application, specification and quantity to request a quotation or supporting documents.