3000 vs 3170 vs 5000 begins with the carrier system and active-content basis. CHLUMIAG® 3000 is a 100%-active UV/solvent route and is explicitly unsuitable for water. CHLUMIAG® 3170 is a 100%-active UV/solvent route that can enter aqueous work only after hydrophilic-solvent predilution. CHLUMIAG® 5000 is a 50%-active water-only emulsion.
Anti-graffiti, easy-clean and anti-sticking are not proven by water contact angle alone. Define marker, cleaner, cycles, dwell, substrate texture, weathering and damage limits.
3000/3170/5000 decision map
| System evidence | First route | Mandatory gate |
|---|---|---|
| Solvent or UV reactive coating can use a broad 0.5–5% route | 3000 | Obtain quantitative OH data; check cure and adhesion |
| UV/solvent or carefully prediluted aqueous system needs a lower-dose screen | 3170 | Hydrophilic predilution and batch OH data |
| Waterborne system needs a supplied emulsion | 5000 | Calculate 50% active basis and request OH evidence |
| Solvent system requires a published OH range | Consider AG-D9000 as a separate comparator | Compatibility and full graffiti protocol |
| Produk | Published data | System route | Evidence limit |
|---|---|---|---|
| 3000 | Multi-component modified polysiloxane; 100% active; 0.5–5% | UV and solvent; not waterborne | Reactive OH claim but no public hydroxyl value/equivalent |
| 3170 | 100% active; 0.05–1%; hydroxyl value ≤70 mg KOH/g | UV/solvent; aqueous requires hydrophilic-solvent predilution | A maximum OH value is not a precise batch stoichiometry value |
| 5000 | Modified-polysiloxane emulsion; 50% active; 0.5–5%; six-month shelf life | Water only | No public hydroxyl value/equivalent |
Choose by system before performance
3000 must not enter a waterborne shortlist. 5000 must not enter a solvent or oil-based shortlist. 3170 requires a defined hydrophilic predilution procedure for aqueous use, including solvent type, ratio, addition order and compatibility.
Record resin, crosslinker, pigments, solvent/water, pH where relevant, substrate and cure. A product that separates or changes cure is not rescued by an attractive wipe result.
Compare supplied and active dosage
3000 and 3170 are published as 100% active. 5000 is a 50%-active emulsion, so its 0.5–5% supplied range corresponds to 0.25–2.5% active material. Equal supplied percentages do not create an equal-active comparison.
Keep added water or predilution solvent equal in the blank. Record viscosity, solids, film build, cure and dry time at every dose.
Separate easy-clean endpoints
Water contact angle, initial marker beading and cleanability answer different questions. Measure the first mark before cleaning, the number of wipes needed with a defined cleaner, residual stain, gloss/color change and visible film damage. Include permanent marker, paint marker or other customer contaminants separately because one result cannot represent all graffiti media.
Define whether the goal is anti-graffiti, low dirt pickup, anti-sticking or easier routine cleaning. A formulation can improve one while worsening another. Use the untreated blank and current production coating as controls, and randomize coded panels so appearance expectations do not bias the rating.
Do not invent reaction stoichiometry
3000 and 5000 describe reactive hydroxyl behavior but publish no hydroxyl value or equivalent. 3170 publishes only an upper limit of ≤70 mg KOH/g. Request current batch data before adjusting NCO/OH or another crosslink ratio.
If a solvent project requires a more quantitative starting point, AG-D9000 publishes 100% active content, 45–60 mg KOH/g hydroxyl value, 0.5–3% dosage and a solvent-only boundary. It remains a separate product trial, not proof for the three products above.
Run a repeatable graffiti protocol
- Apply equal dry-film thickness and complete the specified cure.
- Condition and, if required, weather panels before marking.
- Define marker types, colors, dwell and cleaning agents.
- Record removal cycles, residual stain, gloss/color change and film damage.
- Repeat marking/cleaning and test adhesion and recoat afterward.
Use a graffiti method and adhesion guardrail
ASTM D6578/D6578M provides defined markings and cleaning conditions for graffiti resistance and notes that smooth-surface results may not transfer to rough textures. ASTM D3359 supplies a metallic-substrate tape-adhesion rating with known sensitivity limits.
Pair wipe performance with gloss, color, hardness, chemical resistance, weathering, blocking, adhesion and recoat. A coating that removes marker but loses film or intercoat adhesion is not passing.
Age the surface effect before approval
Repeat the full marking and cleaning sequence after the customer-required water, chemical, heat, humidity or weathering exposure. Check repeated mark-clean cycles rather than one wipe. Surface migration can improve the first result yet reduce durability or recoat later, while incomplete reaction can change after additional cure.
For 5000, also monitor emulsion stability through its six-month published shelf life and after freeze/heat conditions approved by the customer. For 3170 aqueous trials, check whether the hydrophilic predilution remains clear and stable after storage.
Common anti-graffiti errors
Putting 3000 into water
Its page explicitly excludes water-based systems.
Comparing equal supplied percentages
5000 contains only 50% active material.
Calling ≤70 an exact OH value
Use current batch data for reaction calculations.
Request a system-specific trial
Send resin, crosslinker, water/solvent/UV system, pigments, substrate texture, cure, current additives, target contaminant, cleaner, dwell/cycles, weathering, gloss/color, adhesion and recoat requirements. Ask Longchang Chemical for the correct 3000, 3170 or 5000 system route and current reaction data.