Coil coating buyers usually should not start by asking for a generic “leveling agent.” The better first question is which job is actually failing first: broad surface balance across wetting, gloss, anti-blocking, and smoothness; compatibility-first anti-cratering work in a more sensitive formulation; or cured-film scratch resistance with recoatability still intact. That split is more useful than treating all silicone-type surface additives as interchangeable.
For many practical screening jobs, CHLUMIFE® 3166, CHLUMIAG® 3467, En CHLUMIFE® 3307X create three different starting routes. 3166 is the earlier shortlist when the team wants a broad surface-control package across substrate wettability, surface smoothness, gloss, anti-blocking, and scratch balance. 3467 deserves earlier review when system compatibility and anti-cratering matter more, or when the team may use the additive during resin modification. 3307X belongs earlier when the shortlist is being built around cured-film abrasion and scratch resistance plus recoatability in non-water-based work.
Quick shortlist for coil coating additive selection
| Product | Best starting fit | System boundary | Hoofdobservatiepunt |
|---|---|---|---|
| CHLUMIFE® 3166 | Broad surface balance, dry feel, gloss, anti-blocking, smoothness, scratch support | UV-, oplosmiddel- en watergebaseerde systemen | Can raise pinhole, whitening, or foam-stabilization risk, so defoamer review may be needed |
| CHLUMIAG® 3467 | Compatibility-first route with leveling, anti-cratering, wetting, anti-sticking, and scratch support | UV, solvent, and water-based systems; can also be used during polyurethane resin modification | Feel is not its main strength when compared with more feel-led alternatives |
| CHLUMIFE® 3307X | Cured-film abrasion and scratch resistance with surface smoothness and recoatability priority | Non-water-based route | Compatibility and dilution planning should be checked early during solvent-side screening |
When CHLUMIFE® 3166 is usually the better first screen
CHLUMIFE® 3166 is the practical earlier route when the coil coating team is not solving one narrow defect only, but needs a broader surface package. Longchang supports it for UV, solvent, and water-based systems, with dosage guidance around 0.05% to 1.0% of total formulation and any-stage addition, including optional solvent pre-dilution for easier incorporation.
The company-supported performance framing around 3166 is why it fits this first-screen role. It is positioned around excellent dry feel, substrate wettability, surface smoothness, scratch resistance, anti-blocking, leveling, and gloss improvement. That makes it commercially useful when the line is screening for a more balanced surface result instead of only chasing one crater or one slip complaint.
The tradeoff is also clear. Longchang explicitly flags possible pinholes, whitening, and a foam-stabilizing effect. In practice, that means 3166 should move down the shortlist if the formulation is already pinhole-sensitive or if the foam window is tight and the defoamer package is not yet stable. When those risks can be managed, it is often the cleanest broad coil-coating starting point.
When CHLUMIAG® 3467 should move ahead of a broader additive
CHLUMIAG® 3467 is the better route when the buyer problem is more compatibility-led and crater-sensitive. Longchang supports it for UV, solvent, and water-based systems and also gives two execution paths: direct coating modification or polyurethane-related resin modification, where it can be added with the polyol during prepolymerization or added later.
Its supported performance profile is broader than a simple leveling claim. Longchang positions 3467 around leveling, anti-cratering, substrate wetting, anti-sticking and peeling, scratch resistance, and abrasion resistance. That makes it useful for coil coating programs where the film must lay down cleanly but the team also wants a route that stays commercially realistic when compatibility is the first constraint.
The caution is that Longchang explicitly says this product prioritizes compatibility, so feel is slightly less refined. If the project is being judged more by hand feel than by compatibility or crater control, 3467 should not be treated as the automatic winner. For coil lines where defect control and formulation tolerance come first, it can be the more reliable shortlist entry.
When CHLUMIFE® 3307X deserves earlier review
CHLUMIFE® 3307X belongs earlier when the main commercial pressure is cured-film durability rather than only wet-stage flow. Longchang supports it as a non-water-based route with dosage guidance around 0.1% to 1.0%, plus the practical note that a 12.5% solvent solution can be used to simplify handling.
The supported reason to choose 3307X is its positioning around abrasion resistance and scratch resistance after film formation, along with surface smoothness, leveling, and recoatability priority. That combination matters in coil-coating work where the finished film will be handled, processed, or overcoated and the team cannot trade away downstream repair or recoat flexibility too early.
3307X is not the best universal answer when the project may need a water-based route or when the job is mostly about broader wetting and anti-blocking balance. It is the stronger candidate when the shortlist is being built around the final film, not only the wet film.
Hoe kopers moeten kiezen tussen deze drie routes
Start with the dominant failure mode and system boundary, then narrow from there.
- Choose CHLUMIFE® 3166 first when you need a broader package across wetting, smoothness, gloss, anti-blocking, and scratch balance, and your system can tolerate careful pinhole and foam review.
- Choose CHLUMIAG® 3467 first when compatibility and crater control are driving the decision, or when resin-modification flexibility matters during development.
- Choose CHLUMIFE® 3307X first when cured-film abrasion and scratch resistance plus recoatability are carrying more weight than a broad all-around surface package.
If the team is still earlier in additive-family selection, it helps to read the broader cluster pages on CHLUMICRYL® coating- en inktadditieven, nivellerende additieven, En bevochtigingsmiddelen before locking the final shortlist.
Aanbevolen Longchang productpaden
- CHLUMIFE® 3166 for broad surface balance across UV, solvent, and water-based routes
- CHLUMIAG® 3467 for compatibility-first anti-cratering and direct-add or resin-modification screening
- CHLUMIFE® 3307X for non-water-based cured-film scratch resistance and recoatability work
FAQ
Are these three additives interchangeable in coil coatings?
No. They overlap at the surface-control level, but Longchang supports them with different decision priorities. 3166 is the broader balance route, 3467 is the compatibility and anti-cratering route, and 3307X is the cured-film scratch plus recoat route.
Which route fits water-based coil coating work better?
From this shortlist, 3166 and 3467 both sit inside Longchang’s supported water-based applicability. 3307X should not be the default first route for water-based screening because its supported system boundary is non-water-based.
What if crater control is more urgent than hand feel?
3467 usually deserves earlier review in that case because Longchang supports it around anti-cratering and compatibility-first use. 3166 is still commercially useful, but it is better treated as the broader package rather than the automatic crater-first answer.
What if the final film will be handled hard after cure?
That is where 3307X becomes more attractive. Longchang positions it around abrasion and scratch resistance after film formation while keeping surface smoothness, leveling, and recoatability in view.
Volgende stap
If you are building a coil coating shortlist, send Longchang the system type, the main defect or performance target, and whether the project priority is broad surface balance, compatibility-led crater control, or cured-film scratch durability. That makes it much easier to narrow the CHLUMICRYL® route quickly and link you to the most relevant product page.