Liquide, easy to add
No milling; blends directly into the coating.
SUNSORB® 384-2
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
- Lot de COA avec chaque expédition
- Des échantillons pour vos essais
- Support technique pour votre essai
Présentation du produit & avantages clés
UV-384-2 (C7–C9 branched and linear alkyl esters of 3-(2H-benzotriazole-2-yl)-5-(1,1-diméthyléthyl)-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.
Coating durability
Protects gloss and color of the coating and the substrate.
Works with liquid HALS
Typically combined with 292 ou 123.
Spécifications techniques
| Parameter | Typical value |
|---|---|
| Nom du produit | UV Absorber UV-384-2 |
| Marque | SUNSORB® 384-2 |
| Numéro CAS. | 127519-17-9 |
| Nom chimique | Benzenepropanoic acid, 3-(2H-benzotriazole-2-yl)-5-(1,1-diméthyléthyl)-4-hydroxy-, C7–C9 branched and linear alkyl esters |
| Apparence | Light-yellow viscous liquid |
Typical specification. Every shipment is supplied with a batch COA; the limits that apply to your order are confirmed in the quotation and contract.
Applications by Material
Pick an application to see how 384-2 is normally used and what to confirm before your trial.
Automobile & Industrial Coatings
Typically 1–3% on binder solids with a liquid HALS.
Check before trial
- Coating type and binder
- Cure conditions
- Durability target
Wood Coatings
Protects wood from UV darkening under clear coats.
Check before trial
- Waterborne or solvent-borne
- Wood species
- Exterior or interior
Inks, Adhésifs & Other Coatings
UV absorber for other liquid systems.
Check before trial
- System type
- Compatibilité
- Exposure
Selection & comparaison
Selecting a UV Absorber
| Your requirement | What usually works |
|---|---|
| Clear or light-colored polyolefin parts and film | Benzophenone (531) or benzotriazole (326) at low loading |
| High processing temperature (PC, ANIMAUX, Pennsylvanie) | Low-volatility grades: 234, 360 or 1577-type triazines |
| Thin films and fibers | Higher-MW, low-volatility grades so the absorber is not lost in processing |
| Solvent-borne and waterborne coatings | Liquid benzotriazoles (384-2, 1130) or triazine (400), paired with a HALS |
| Outdoor service longer than one season | UV absorber plus a HALS; the absorber filters, the HALS stops radical chains |
| Exports to the EU | Check REACH status first; some benzotriazoles (327, 328) are restricted |
| Replacing an existing grade | Send your current TDS or COA; we match on chemistry and the parameters you approve |
UV Absorber Comparison
Swipe or scroll horizontally to see all columns →
| Produit | Chemistry | Mol. weight | Point de fusion / form | Best fit | Typical starting level* |
|---|---|---|---|---|---|
| SUNSORB® 384-2 | Benzotriazole, liquide | — | Liquide | Revêtements | 1–3% on binder solids |
| SUNSORB® 400 | Hydroxyphenyl-triazine, liquide | — | Liquide | Automotive and industrial coatings | 1–3% on binder solids |
| LUMIÈRE DU SOLEIL® 292 | Liquid HALS | — | Light-yellow liquid | Revêtements | 0.5–2% on binder solids |
| LUMIÈRE DU SOLEIL® 123 | NOR HALS, liquide | — | Light-yellow liquid | Acid-catalyzed coatings | 0.5–2% on binder solids |
| SUNSORB® 1130 | Benzotriazole, liquide | — | Liquide | Revêtements | 1–3% on binder solids |
*Starting points for trials, not fixed recommendations. Loading depends on part thickness, pigment, target service life and the HALS used alongside. UV absorbers and HALS work by different mechanisms and are usually combined.
Emballage & stockage
Emballage
Typiquement 25 kg pails or 200 fûts de kg; 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.
Délai de mise en œuvre & terms
Typically 3–15 business days from order confirmation, depending on quantity. GOUSSET, CIF or DAP to major ports.
Du premier e-mail à la fourniture approuvée
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, heures, 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.
Dites-nous votre besoin. Nous correspondons à la note.
Start with your material, part thickness, quantité et destination. Add your current UV package and we will quote against it.
| Information | Example |
|---|---|
| Polymer / Material | PP, PE, abdos, composé, mélange maître |
| Application | Injection molding, extrusion, film, fibre |
| Current additive | Grade or supplier you use today |
| Required specification | Your TDS, COA or key limits |
| Quantity | Trial order / monthly / annual volume |
| Emballage | Standard 25 kg or specific requirement |
| Destination | Country and port |
| Documents needed | COA, FDS, ATTEINDRE, food-contact statement |
Related products
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?
Oui, 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?
Oui. 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.
