Quick answer: for waterborne epoxy coatings, the cleanest first shortlist usually starts with CHLUMIAG® 3512 when the job is explicitly anti-sticking in a waterborne epoxy route, CHLUMIAG® 5000 when the team wants a water-based-only emulsion route and accepts a higher loading window, and CHLUMIAG® 3565 when water dispersibility matters but the lab can control addition before the curing agent and screen its stated pinhole risk early.
That is the useful buyer split. The real decision is not just “which additive reduces sticking,” but whether the formulation needs an epoxy-specific anti-sticking route, a water-based-only emulsion path, or a more reactive water-dispersible route with tighter defect discipline.
Why this page deserves its own place in the CHLUMICRYL® branch
Longchang already has broader pages for CHLUMICRYL® coating and ink additives, anti-blocking additives, and defect-driven additive selection. Those pages answer the bigger question of which additive family belongs in the conversation.
This page answers the narrower B2B question that comes later: if the formulation is waterborne epoxy and the finished film is sticking after contact, which additive route should be screened first?
That narrower page type is worth publishing because waterborne epoxy buyers are usually balancing surface separation after cure, handling during stacking or packaging, system fit, and defect risk, not just chasing a generic slip or leveling effect.
What buyers are actually trying to fix in waterborne epoxy systems
In practical coating programs, anti-sticking or blocking complaints in waterborne epoxy work usually show up as one of these downstream problems:
- coated parts or sheets stick together after drying or curing
- surface tack remains too high for packing, stacking, or handling
- the film separates poorly after contact pressure or storage
- a water-based system needs cleaner release behavior without losing process control
General industry guidance commonly treats blocking resistance and surface separation after contact as finished-film handling problems, not only liquid-stage wetting or flow problems. That is why a dedicated waterborne epoxy anti-sticking page is commercially stronger than hiding the topic inside a broad additive overview.
Quick comparison table: CHLUMIAG® 3512 vs 5000 vs 3565
| Buying factor | CHLUMIAG® 3512 | CHLUMIAG® 5000 | CHLUMIAG® 3565 |
|---|---|---|---|
| Main role on current Longchang page | Modified silicone oil positioned as a waterborne epoxy anti-sticking agent | Water-based-only anti-graffiti and leveling additive emulsion | Water-dispersible polyether-modified polysiloxane leveling route |
| Supported system window | UV, solvent, and water-based | Water-based only | UV, solvent, and water-based |
| Recommended dosage | 0.1% to 1.0% of total formulation | 0.5% to 5% of total formulation | 0.05% to 1% of total formulation |
| Addition logic | Can be added directly or diluted | Can be added at any stage of production | Add before the curing agent and stir thoroughly |
| Important watchpoint | Avoid mixing with other additives without care | Water-based only, 50% active emulsion, 6-month shelf life | May cause pinholes and should be screened before industrial production |
| Why buyers choose it first | They want the shortest route into a waterborne epoxy anti-sticking trial | They want a true water-based-only emulsion path | They want water dispersibility with a broader reactive-style handling option |
When CHLUMIAG® 3512 is the better first screen
CHLUMIAG® 3512 should move first when the buyer wants the most direct fit to the problem statement itself. Longchang positions it by name as a waterborne epoxy anti-sticking agent, recommends 0.1% to 1.0% of total formulation, and says it can be added directly or diluted. The page also states that alkanes and aromatics can be used for dilution in any ratio.
That makes 3512 the cleanest first sample route when the project brief is already narrow: the resin family is known, the main complaint is surface sticking or poor separation, and the lab wants a lower-dose anti-sticking screen before broadening the package.
- Best fit: waterborne epoxy programs that need an additive route explicitly framed around anti-sticking
- Main strength: direct problem-to-product match with a modest first-screen dosage range
- Main watchpoint: the page says to avoid mixing casually with other additives, so compatibility checks should stay visible
If the buyer’s biggest question is “what should I test first for waterborne epoxy anti-sticking,” 3512 is usually the most commercially disciplined answer.
When CHLUMIAG® 5000 is the better fit
CHLUMIAG® 5000 deserves earlier review when the plant wants a route that is strictly water-based and does not need to bridge into solvent-side logic. Longchang states clearly that 5000 is for water-based systems only, describes it as a multi-component modified polysiloxane emulsion, and notes an active ingredient content of 50%.
Its recommended dosage is 0.5% to 5% of total formulation, which is a different screening posture from 3512 and 3565. The page also gives a stability note of no separation after 15 minutes at 3000 rpm.
- Best fit: teams that want a water-based-only route and are comfortable screening an emulsion additive at a higher loading window
- Main strength: the product does not pretend to be cross-system, so selection stays cleaner
- Main watchpoint: Longchang says it is only for water-based systems and lists a shorter 6-month shelf life
In other words, 5000 is not the best answer when the customer may later shift to solvent or UV work, but it is often a strong answer when the project is firmly staying inside a water-based process lane.
When CHLUMIAG® 3565 is the better fit
CHLUMIAG® 3565 belongs earlier when waterborne epoxy buyers still want a route that is explicitly dispersible in water and also oil-soluble, while keeping open a broader cross-system handling logic. Longchang supports it in UV, solvent, and water-based systems, recommends 0.05% to 1%, and says it should be added before the curing agent with thorough stirring.
The key reason 3565 cannot be treated as a casual substitute is the stated defect watchpoint. Longchang explicitly warns that the product may cause pinholes and says testing or inspection should be completed before industrial production.
- Best fit: waterborne epoxy programs that value water dispersibility but can manage a stricter addition sequence and defect screen
- Main strength: broader handling flexibility than a water-based-only emulsion route
- Main watchpoint: pinhole risk needs to be screened early, not after the scale-up decision
3565 is a better first screen when the team can live with more process discipline in exchange for a broader route.
How buyers should choose before requesting samples
1. Decide whether the project is truly waterborne epoxy specific
If yes, and anti-sticking is the direct complaint, start with 3512 earlier. It is the shortest supported path from the problem statement to the sample plan.
2. Ask whether the formulation must stay water-based only
If the answer is yes, 5000 becomes easier to justify because Longchang is explicit that it is for water-based systems only. That clean boundary can be useful in production communication.
3. Check whether the team can control addition before the curing agent
If not, 3565 may be a less comfortable first screen. Its supported route is still commercially useful, but only if the process discipline is realistic.
4. Treat pinhole risk as a first-round decision factor
Do not wait until scale-up to think about 3565’s stated pinhole watchpoint. If the coating program is already sensitive to crater or pinhole risk, screen that route carefully and early.
5. Keep loading windows realistic
3512, 5000, and 3565 do not ask buyers to begin at the same dosage logic. That matters because a plant that wants a smaller initial dosing window may not shortlist the same route as a plant that is comfortable with a higher loading screen.
Recommended Longchang path from this page
- Waterborne epoxy anti-sticking route: CHLUMIAG® 3512
- Water-based-only emulsion route: CHLUMIAG® 5000
- Water-dispersible route with defect-risk discipline: CHLUMIAG® 3565
- Related function page: How to Choose Anti-Blocking Additives for Coatings and Inks
- Related diagnostic page: Wetting Additive vs Leveling Additive vs Defoamer vs Fluorine Surfactant
- Cluster overview: CHLUMICRYL® Coating and Ink Additives
FAQ
Which product is the most direct first screen for waterborne epoxy anti-sticking?
Usually CHLUMIAG® 3512, because the current Longchang product page is explicitly positioned around waterborne epoxy anti-sticking and gives a practical 0.1% to 1.0% dosage window.
When should buyers choose CHLUMIAG® 5000 before 3512?
Choose 5000 earlier when the formulation is definitely staying water-based, the team accepts an emulsion route, and a higher loading window is acceptable in the first sample round.
What makes CHLUMIAG® 3565 different in a waterborne epoxy program?
Longchang makes its water dispersibility, oil solubility, addition before curing agent, and pinhole-risk watchpoint much more explicit. That gives it a different role from the other two routes.
Are 3512, 5000, and 3565 interchangeable in waterborne epoxy coatings?
No. Their supported dosage logic, system boundary, and process watchpoints are different enough that buyers should not treat them as drop-in substitutes.
Need a tighter shortlist for your waterborne epoxy project?
If your coating is blocking after contact, staying too tacky for handling, or separating poorly after storage, define the real first-screen job before requesting samples. In most waterborne epoxy programs, that quickly narrows the first round to 3512 for the most direct anti-sticking route, 5000 for a water-based-only emulsion path, or 3565 for a broader water-dispersible route with more defect-risk discipline.