Risposta rapida: buyers dealing with coating fisheyes usually waste time when they treat every crater-like defect as the same additive problem. In Longchang’s current CHLUMICRYL® branch, CHLUMICRYL® WD-D547 is the cleaner first route when the film still has a broad wetting and surface-tension problem, especially in water-borne work where spread and first-contact coverage still look weak. CHLUMIAG® 3467 deserves the earlier screen when the defect behaves more like a compatibility-sensitive anti-cratering problem inside a broader coating package. CHLUMIFS® D9013R belongs earlier when ordinary silicone-style wetting or leveling routes still leave stubborn fisheyes, anti-shrinkage pressure, or UV-primer crater defects that need a stronger fluorine-surfactant path.
That is the commercially useful split. This page is non another broad additive-family overview. Longchang already has the wider coating defect additive selection page for choosing between wetting additives, leveling additives, defoamers, and fluorine surfactants at a high level. This new page narrows the buyer question further: if the complaint is already fisheye or crater-like surface breakup, which additive route should move first?
Why coating fisheyes deserve their own buyer-selection page
A fisheye complaint sits in a narrower decision window than a general defect page. By the time the lab or coating buyer calls the defect a fisheye, the real question usually is no longer whether the line needs a defoamer or a leveling additive in the abstract. The question is whether the crater-like defect starts with insufficient wetting, UN compatibility-sensitive anti-cratering issue, o un more stubborn surface-tension conflict where a fluorine route becomes more realistic.
That is why this page can sit cleanly inside the CHLUMICRYL® branch without overlapping too heavily with broader live pages like CHLUMICRYL® Additivi per vernici e inchiostri, the general additivi bagnanti e fluorine surfactants pages, or the wider coating-defect router. Those pages explain the families. This page answers the tighter B2B question that comes after that: which supported route deserves the first sample round when the panel is already showing fisheyes or crater rings?
General industry practice also supports this narrower framing. Fisheye defects are often screened by asking whether the coating is failing at broad substrate wetting, at a more formulation-sensitive crater-control stage, or at a stronger low-surface-energy control stage. That outside framing is used here only conservatively. The product facts below stay tied to Longchang-supported product pages.
What the current company-supported evidence already separates
- CHLUMICRYL® WD-D547 is supported by Longchang as a polyether modified polydimethyl siloxane per water-borne paint, solvent and solvent-free paint, and UV cure paint. Longchang states that it can most effectively reduce surface tension in water system, offers wetting and spreading, and also supports anti-cratering, re-coating, defoaming, and leveling. Il dosaggio consigliato è Da 0,1% a 0,5%.
- CHLUMIAG® 3467 is supported by Longchang as a polisilossano modificato multicomponente with a more compatibility-first anti-cratering and reactive leveling route. The supported dosage guidance is Da 0,05% a 1,0% of total formulation for solvent systems, Da 0,5% a 5% of resin amount for resin modification, and Da 0,5% a 5% of total formulation for water-based systems. Longchang also states that it can be used across Sistemi a base di raggi UV, solventi e acqua, and notes that it dà priorità alla compatibilità del sistema, even if the feel is slightly less refined.
- CHLUMIFS® D9013R is supported by Longchang as a fluorocarbon copolymer solution per solvent-based and UV-cure systems. Longchang supports good long-wave leveling, excellent anti-cratering, fast leveling speed, and says it is often used as an anti-shrinkage additive in systems where silicone additives cannot be used. The product page also states that it shows an excellent anti-cratering effect in common UV primer, does not affect re-coating there, but should not be used in UV vacuum electroplating primer because it will affect re-coating. The suggested dosage is Da 0,1% a 1,0%.
That is enough company-supported separation to build a real buyer page without inventing mechanism claims that the current evidence does not support.
Tabella comparativa rapida: quale percorso merita di essere visualizzato per primo?
| Observed fisheye situation | Il miglior primo percorso | Perché appartiene al primo posto | Punto di osservazione principale |
|---|---|---|---|
| The film still shows broad spread loss, weak first-contact coverage, or a water-borne surface-tension problem before the team can even judge finer crater behavior | CHLUMICRYL® WD-D547 | Longchang supports it directly around reduced surface tension in water systems plus wetting, spreading, and anti-cratering support | It is the better first move when the issue is still broad wetting, not when the panel already needs a stronger special-case fluorine rescue |
| The defect behaves like a compatibility-sensitive crater or fisheye problem inside a broader coating package | CHLUMIAG® 3467 | Longchang positions it around anti-cratering, substrate wetting, reactive leveling logic, and system compatibility across UV, solvent, and water-based systems | Its supported logic prioritizes compatibility more than final feel, so it is best screened when crater stability comes before tactile refinement |
| Ordinary silicone-style routes still leave stubborn fisheyes, anti-shrinkage pressure, or a common UV-primer crater problem | CHLUMIFS® D9013R | Longchang supports it directly as a fluorine-surfactant route with excellent anti-cratering and anti-shrinkage value in solvent-based and UV-cure systems | Do not over-extend it into UV vacuum electroplating primer, because Longchang says it will affect re-coating there |
When CHLUMICRYL® WD-D547 is the better first move
WD-D547 should move first when the fisheye complaint still starts with a broader wetting failure. This is the stronger first route when the coating does not spread onto the substrate cleanly enough, still shows first-contact retreat, or looks as if the team is trying to judge crater behavior before the film has even entered the surface window correctly.
That supported logic is commercially useful because Longchang does not position WD-D547 only as a vague silicone additive. The current product page keeps together riduzione della tensione superficiale, especially in water systems, più wetting, spreading, anti-cratering, re-coating, defoaming, and leveling.
WD-D547 is usually the better first route when:
- the coating still beads, retracts, or leaves obvious unsteady spread before a more refined crater judgment is even possible,
- the project is water-borne and the first visible failure still looks like a surface-tension and wetting problem,
- the buyer wants one first screen that covers wetting and anti-cratering together, or
- the line still needs a more conventional surface-entry correction before a stronger rescue additive becomes justified.
If the panel still is not spreading correctly, jumping too early to a fluorine route can create noise instead of clarity.
Quando CHLUMIAG® 3467 è la scelta migliore come prima opzione
3467 deserves the earlier screen when the fisheye complaint feels more like a compatibility-sensitive crater problem than a simple wetting failure. This is the better first route when the team already suspects that the crater rings are tied to broader formulation sensitivity, resin-package behavior, or a need for a more compatibility-first anti-cratering route rather than only lower surface tension.
The current Longchang-supported page is useful here because 3467 keeps together anti-cratere, bagnatura del substratoe un reactive leveling path, while also staying open across Sistemi a base di raggi UV, solventi e acqua. Longchang additionally supports resin-modification use and states that the product dà priorità alla compatibilità del sistema.
3467 is usually the better first route when:
- the fisheye sits inside a broader compatibility-sensitive coating package,
- ordinary wetting correction alone has not created a stable enough film,
- the team wants to screen a route that can address anti-cratering plus formulation compatibility together, or
- the project needs a crater-control route that still stays open across multiple system types.
The watchpoint should stay visible. Longchang says this route prioritizes compatibility, so it is a cleaner first move for crater stability than for final hand-feel tuning.
When CHLUMIFS® D9013R is the better first move
D9013R should move earlier when the fisheye is already behaving like a stubborn special-case defect. This is the stronger route when a more ordinary silicone-style wetting or anti-cratering screen has not fully solved the crater rings, when the system has anti-shrinkage pressure, or when the work is specifically in a common UV primer window where Longchang already supports its anti-cratering value.
The current product page keeps this commercially clean. Longchang supports D9013R for solvent-based and UV-cure systems, highlights good long-wave leveling, fast leveling speede excellent anti-cratering, and says it is often used as an anti-shrinkage additive in systems where silicone additives cannot be used.
D9013R is usually the better first route when:
- the fisheye remains after more conventional silicone-style routes,
- the project needs a stronger fluorine-surfactant rescue path,
- the coating system is solvent-based or UV-cure rather than water-borne, or
- the buyer is screening a common UV primer crater problem and needs a route that still preserves re-coating in that supported window.
The boundary matters. Longchang also says it is not applicable in UV vacuum electroplating primer because it will affect re-coating, so buyers should not blur that exception.
Come dovrebbero scegliere gli acquirenti prima del primo giro di campioni
1. Decide whether the fisheye is still a broad wetting problem
If the coating still cannot spread or enter the substrate surface cleanly, start with WD-D547.
2. Separate compatibility-sensitive craters from ordinary wetting loss
If the panel already looks more like a broader formulation-sensitivity issue, move 3467 earlier than another simple wetting-agent trial.
3. Use the fluorine route deliberately, not by reflex
D9013R is not the first answer to every fisheye. It is the more realistic early route when the defect is stubborn, silicone-restricted, or sitting inside a common UV-primer / anti-shrinkage window.
4. Keep process and contamination discipline honest
Not every fisheye is additive-only. Surface contamination, poor cleaning, or substrate inconsistency can still distort the read. The cleaner first trial plan is to fix obvious process contamination first, then test the additive lane that matches the remaining defect behavior.
5. Keep the first sample set small
For many coating fisheye projects, a practical first plan is one WD-D547 wetting route, uno 3467 compatibility-first anti-cratering routee uno D9013R fluorine rescue route. That usually teaches more than screening a wide stack of near-neighbor additives at once.
Percorso consigliato per Longchange da questa pagina
- Broad wetting correction: CHLUMICRYL® WD-D547
- Compatibility-first anti-cratering: CHLUMIAG® 3467
- Fluorine-surfactant rescue: CHLUMIFS® D9013R
- Panoramica del cluster: CHLUMICRYL® Additivi per vernici e inchiostri
- Related defect router: Additivo bagnante vs additivo livellante vs antischiuma vs tensioattivo fluorurato in rivestimenti e inchiostri
- Pagina relativa all'applicazione: How to Fix Anti-Cratering Problems in UV Primers
- Pagina relativa all'applicazione: How to Choose Additives for Waterborne Plastic Clearcoats
- Pagina relativa all'applicazione: How to Choose Surface Additives for 2K Polyurethane Clearcoats
FAQ
What is the best first additive if the fisheye still looks like a broad wetting failure?
Usually WD-D547, especially when the system is water-borne and the film still is not spreading cleanly enough for a more refined crater judgment.
When should I test 3467 before another wetting additive?
Test 3467 earlier when the fisheye looks tied to broader formulation compatibility or crater-sensitive package behavior, not just lower surface tension.
When does D9013R deserve the earlier screen?
It deserves earlier review when more ordinary silicone-style routes still leave stubborn fisheyes, when anti-shrinkage pressure remains, or when the problem sits in a supported common UV-primer window.
Can D9013R be used in every UV primer?
No. Longchang supports it in common UV primer but also states that it is not applicable in UV vacuum electroplating primer because it will affect re-coating.
Is every fisheye defect an additive problem?
No. Surface contamination and process issues can still dominate. This page helps buyers choose the right additive lane after the obvious process-side causes are checked.
Hai bisogno di una lista di candidati più ristretta?
If your coating panel still shows fisheyes or crater rings, stop treating that as one generic additive request. First decide whether the defect still starts with broad wetting loss, UN compatibility-sensitive crater problem, o un stubborn fluorine-route case. That usually makes the next CHLUMICRYL® sample decision much faster.