3000 vs 5000 vs D9000 starts with coating system and reaction evidence. CHLUMIAG® 3000 is a UV/solvent reactive-OH surface route. CHLUMIAG® 5000 is a 50%-active water-only emulsion. CHLUMICRYL® AG-D9000 is a 100%-active solvent-only hydroxyl silicone with a published OH value of 45–60 mg KOH/g.
They are not drop-in alternatives at equal product percentage. Compare active level, reaction demand, dilution, cure and resin compatibility before cleanability.
System-and-reaction decision map
| Formulation | Evidence gate | First route |
|---|---|---|
| UV or solvent coating; no water compatibility required | Reactive resin, cure and 3000 TDS functional data | 3000 |
| Water-based formulation committed to an emulsion route | Emulsion stability, pH, 50% active conversion and cure | 5000 |
| Solvent 2K/bake system needs quantified hydroxyl input | OH value, NCO/OH or crosslink balance, bake and varnish compatibility | AG-D9000 |
| System crosses these boundaries | No candidate is a justified direct substitute | Rebuild shortlist |
| 제품 | System | Published guidance | Evidence boundary |
|---|---|---|---|
| 3000 | UV and solvent; not water-based | 0.5–5% total; 100% active; any stage; hydrocarbon/ether/ester dilution | Reactive OH claim is qualitative; obtain current OH/equivalent data |
| 5000 | 수성 제품만 해당 | 0.5–5% total; 50% active emulsion; any stage; six-month shelf life | Do not use in oil/solvent systems; OH/equivalent value not published |
| AG-D9000 | Solvent-based only | 0.5–3% total; 100% active; OH 45–60; pre-dilute to 10–20% with xylene | Varnish compatibility and low-temperature bake/resin balance required |
Use 3000 for UV or solvent reactive screening
The 3000 page describes reactive OH groups that chemically bond with suitable resins and supports 2K, high-temperature-dry and UV systems. Its system table explicitly excludes water-based use.
The public page does not give an OH value or equivalent weight. Obtain current TDS data before calculating NCO/OH or other crosslink demand. Measure pot life, cure, adhesion, recoat, cleanability, blocking, water resistance and weathering.
Use 5000 only in water-based systems
5000 is a semi-transparent modified-polysiloxane emulsion with 50% active content, 0.5–5% use and a six-month shelf life. Its page marks oil and solvent systems as not applicable.
Convert product dose to active dose before comparing with 100%-active 3000 or D9000. Check pH, shear, freeze/heat stability, viscosity, foam, film clarity, cure, water whitening and storage. A stable neat emulsion can still destabilize a coating.
Use D9000 when quantified OH data matters
D9000 publishes polydimethylsiloxane with hydroxyl groups, 100% active content and OH value 45–60 mg KOH/g. It is solvent-only and should be diluted to 10–20% with xylene before addition.
The page recommends high-OH acrylic resin and longer bake time for low-temperature two-pack use, and asks users to evaluate varnish compatibility first. Include xylene, hydroxyl demand, resin balance and bake schedule in the trial.
Normalize active addition
A 1% product dose contributes about 1% active for 3000 or D9000 but about 0.5% active for 5000. This arithmetic does not make the chemistries equivalent; it only prevents a misleading product-on-product comparison.
Report both supplied-product percentage and calculated active percentage. For reactive routes, also report functional-group contribution using the current batch COA/TDS.
When the crosslinker is isocyanate, convert the verified OH value or equivalent weight into hydroxyl equivalents and include it in the NCO/OH calculation. When cure is UV or another chemistry, obtain the supplier’s documented reaction mechanism instead of transferring the 2K calculation. Record every assumption in the batch sheet.
Test cleanability with defined soil
Define marker/soil, color, dwell, temperature, cleaning agent, cloth, load, strokes and rating. Record residual stain, gloss/color change, coating removal and repeat cycles. Contact angle alone is not cleanability or anti-graffiti durability.
Test both initial and aged films. Heat, humidity, detergent cycling, abrasion and outdoor exposure can change surface enrichment or damage the coating. Repeat the same stain and cleaning sequence after each exposure, and reject candidates that clean by sacrificing film thickness, gloss or adhesion.
ASTM D1308 compares coating changes after defined household-chemical exposure, including discoloration, gloss change, softening and adhesion loss. ASTM D5402 can compare solvent resistance during cure but does not prove full cure. ASTM D3359 provides a limited adhesion rating.
Build three separate trial plans
- 3000: UV/solvent blank and ladder with current reactive data.
- 5000: waterborne blank and ladder with emulsion/storage checks.
- D9000: solvent 2K/bake ladder with OH and xylene accounting.
- Hold film, cure, conditioning and stain method constant within each system.
- Do not compare scores across different resin/cure platforms as if equivalent.
Include a resin-only blank and, where practical, a current production control. The blank shows additive effect; the production control shows whether the new route actually improves the commercial baseline.
Common comparison errors
Putting 5000 into solvent coating
The public system table explicitly makes 5000 water-only.
Ignoring D9000 hydroxyl demand
Its published OH value makes reaction accounting possible and necessary.
Calling equal product dose an equal trial
5000 is 50% active while 3000 and D9000 are 100% active.
Request a system-matched comparison
Send resin/crosslinker, system, solids, OH/NCO or cure balance, pigments, current additives, film/cure, bake or UV data, varnish clarity, and defined marker/soil, cleaning, block, adhesion and durability limits. Ask Longchang Chemical for current 3000, 5000 and D9000 TDS guidance.