Buyers choosing a dispersant for carbon black, matte powder, or pigment-heavy coating systems usually waste time when they compare products only by the word dispersant. The more useful first question is what the grind is actually struggling with: filler-rich primer viscosity, high-pigment grind efficiency and storage stability, 또는 thermoplastic-acrylic color strength and gloss development. That split is more commercially useful than treating every polymeric dispersant as interchangeable.
For many practical coating and ink projects, CHLUMICRYL® DP-D241R, CHLUMICRYL® DP-D2641R, 그리고 CHLUMICRYL® DP-D265R create three different starting routes. DP-D241R is the stronger early screen when the project is a primer system carrying carbon black, bentonite, or matting powder and needs obvious viscosity reduction. DP-D2641R deserves earlier review when the buyer wants fast fineness reduction plus storage-stable high-pigment handling, especially around carbon black, organic pigments, matte powder, or solvent-free epoxy-floor color systems. DP-D265R belongs earlier when the line is closer to coatings and inks that need strong color development, high gloss, and explicit fit for thermoplastic acrylic resin systems.
Quick shortlist for dispersant selection
| 제품 | Best starting fit | Supported pigment or system clues | 주요 감시 지점 |
|---|---|---|---|
| DP-D241R | Primer-side viscosity reduction and difficult filler handling | Carbon black, bentonite, and matting powder in primer systems | Use level changes sharply by pigment class, so buyers should not copy one dosage across all grinds |
| DP-D2641R | Fast fineness reduction with storage-stable high-pigment handling | High-pigment carbon black, organic pigments, matte powder, and solvent-free epoxy-floor color systems | It is a broader high-efficiency route, so buyers should still confirm the pigment family and target color system before scaling |
| DP-D265R | Thermoplastic-acrylic, high-gloss, and color-intensity-led grinding | Organic pigments, high-pigment carbon black, coatings, inks, and thermoplastic acrylic resin systems | Best fit is not the same as the primer-heavy filler route, so it should not be the automatic default for matte or bentonite-rich systems |
Why this page deserves its own place after the broader dispersant guide
Longchang already has a broader decision page on how to choose dispersants for pigmented coatings and inks. That page helps buyers decide when a dispersion problem belongs in the dispersant lane at all.
This page answers the narrower commercial question that comes after that: which specific Longchang dispersant should be screened first when the grind is driven by carbon-black viscosity pressure, matte-powder handling, storage-stable high-pigment color, or thermoplastic-acrylic color development? That is a distinct buyer decision, and it deserves a tighter comparison page instead of forcing users back into a broad family overview.
When DP-D241R is usually the better first screen
DP-D241R is the stronger early route when the formulation is a primer system and the grind is being limited by carbon black, bentonite, 또는 matting powder rather than only by ordinary pigment wetting. Longchang supports it as a polymer block copolymer solution and explicitly positions it with excellent viscosity reduction ability for primer systems containing those materials. The same company page also supports good stability, reduced floating color 및 flowering, and a lower need for organic solvent and thinner.
That makes DP-D241R commercially useful when the buyer is trying to keep a primer grind workable instead of only chasing maximum color strength. It is the page-supported route when filler burden and viscosity reduction are real decision drivers, not side details.
Its dosage logic also shows why it should not be treated casually. Longchang gives different supported addition windows based on pigment class: around 1% to 10% for inorganic pigments, 20% to 40% for carbon black, and 30% to 100% for organic bentonite. That alone is a good reason to use DP-D241R as a controlled first screen instead of assuming the same treat level as a more color-intensity-led dispersant.
When DP-D2641R should move ahead
DP-D2641R deserves earlier review when the buying problem is more about high-pigment grind efficiency 및 storage-stable dispersion across carbon black, organic pigments, or matte powder. Longchang supports it for the dispersion of high-pigment carbon black, organic pigment, 그리고 matte powder, with excellent dispersion efficiency 및 viscosity reduction ability. The company page also supports no stable foam, excellent storage stability, and application in solvent-free epoxy floor coating compound color paint systems.
That combination makes DP-D2641R the more defensible first route when the buyer needs one dispersant that helps the grind move quickly and still stay commercially usable after storage, especially in stronger pigment-loading work.
Longchang also supports a practical process benefit around fast fineness reduction, which matters when the mill or grind stage is a real cost and cycle-time issue. In short, DP-D2641R is the cleaner choice when the lab wants an efficiency-led and stability-led first screen rather than a primer-only route.
When DP-D265R belongs earlier
DP-D265R belongs earlier when the buyer is building a shortlist around high gloss, high color intensity, and explicit fit for thermoplastic acrylic resin systems. Longchang supports it for coatings and inks, and specifically highlights excellent dispersion and viscosity reduction for organic pigments together with high-pigment carbon black 및 excellent blackness. The company page also gives a direct system clue by saying it has a very good effect in thermoplastic acrylic resin systems.
That makes DP-D265R the better early route when the project is not mainly a filler-heavy primer problem, but a color-development and appearance problem where pigment strength and gloss matter more in the first sample round.
Commercially, this is the route that should move up when the buyer wants a cleaner bridge between pigment dispersion and final color impression. It is not the same starting logic as DP-D241R, and it is more specific than simply saying a dispersant works for coatings and inks.
구매자는 이 세 가지 경로 중에서 어떻게 선택해야 할까요?
Start with the grind bottleneck and system type, then narrow from there.
- Choose DP-D241R first when the system is primer-heavy and the main pressure is viscosity reduction with carbon black, bentonite, or matting powder.
- Choose DP-D2641R first when you want fast fineness reduction, high-pigment efficiency, low stable-foam risk, and stronger storage stability, especially for carbon black, organic pigments, matte powder, or solvent-free epoxy-floor color work.
- Choose DP-D265R first when the project is closer to coatings or inks that value strong color development, blackness, gloss, and thermoplastic-acrylic fit.
If the team is still earlier in branch selection, it helps to review the broader CHLUMICRYL® 코팅 및 잉크 첨가제 overview and the main dispersants guide before locking the final shortlist.
추천 롱창 제품 경로
- DP-D241R for primer systems carrying carbon black, bentonite, and matting powder with strong viscosity-reduction needs
- DP-D2641R for high-pigment carbon black, organic pigment, matte powder, and solvent-free epoxy-floor color systems
- DP-D265R for coatings and inks that need strong carbon-black color development and thermoplastic-acrylic fit
자주 묻는 질문
Are these three dispersants interchangeable?
No. They all sit inside pigment-dispersion work, but Longchang supports them with different first-screen roles. DP-D241R is the primer and filler-heavy viscosity-reduction route, DP-D2641R is the high-pigment efficiency and storage-stability route, and DP-D265R is the thermoplastic-acrylic color-strength and gloss route.
Which route is the better first screen for carbon-black primer systems with bentonite or matting powder?
DP-D241R is usually the cleaner first screen because Longchang explicitly ties it to primer systems containing carbon black, bentonite, and matting powder, with strong viscosity-reduction support.
Which dispersant should move up when storage stability matters more?
DP-D2641R deserves earlier attention because Longchang explicitly supports excellent storage stability while also connecting it to high-pigment carbon black, organic pigments, matte powder, and solvent-free epoxy-floor color systems.
When should DP-D265R move ahead of the other two?
DP-D265R should move ahead when the project is closer to coatings or inks where high gloss, strong color intensity, and thermoplastic-acrylic performance matter more than filler-heavy primer handling.
다음 단계
If your pigment-dispersion project is losing time between carbon-black viscosity pressure, matte-powder handling, storage-stable grind efficiency, and thermoplastic-acrylic color development, send Longchang the resin system, pigment package, and the actual grind bottleneck first. That usually narrows the right CHLUMICRYL® dispersant much faster than screening the whole dispersant shelf at once.