High loading · 40-50% carbon black

High-Load Carbon Black Masterbatch — 40–50% for UV & Deep Black

Made at our plant in Huizhou since 2016. When you need UV protection, full opacity or a true jet black at a low let-down ratio, the answer is a higher carbon loading — but only if it still disperses.

40-50% loadingStill dispersesISO 9001 / 14001 / 45001PE / PP carrierConsistent lots

Since 2016making black masterbatch

60,000 t/yrplant capacity

30+ countriesexport markets

1,000+ buyersserved worldwide

What we tune at high loading

Pushing carbon loading up is easy. The hard part is keeping it dispersed, because a high-loading grade that does not disperse costs you more in scrap than it saves in let-down.

Carrier resin	PE / PP / EVA — matched to your polymer
Carbon black content	40 – 50% (other loadings on request)
Standard grades	CM50 · N4066 · Y07B · SY-65 — see the full TDS chart
Dispersion	Controlled at high loading — the usual failure point
Melt flow (MFR)	Matched to your process so high loading stays workable
Typical use	UV protection, opacity at low let-down, jet black finish
Certifications	ISO 9001 / 14001 / 45001

Tell us the loading you need, your polymer and the process — we will confirm what disperses cleanly at that level.

Why buyers specify our high-load grades

Performance

UV and opacity that hold

Higher carbon loading is what protects outdoor products and blocks light at thin gauge.

Discipline

Dispersed, not just loaded

We will tell you when a loading stops dispersing well in your polymer rather than shipping it anyway.

Commercials

Direct from plant

No trading-company layer. A firm factory quote and a faster technical answer.

De-risk

Trial lot first

Run a trial on your own line before you commit. We keep your spec confidential.

Where it goes

Typical uses for high-loading carbon black masterbatch:

UV-protected pipe

Pressure pipe and conduit that need long outdoor life.

Geomembrane

Liners where carbon content is written into the standard.

Thin-gauge film

Mulch and cover film that must stay opaque.

Jet black parts

Molded and extruded parts needing a deep black finish.

40–50% carbon loading Free sample on request Your spec kept confidential 60,000 t/yr capacity

Carbon black is not one material

Two grades can both be described as “40% carbon black” and behave completely differently. What separates them is the type of carbon black, not only the loading.

Particle size sets colour strength. Finer grades give a deeper, bluer black at the same loading; coarser grades give a browner, flatter black. That is why matching a visual target is a conversation about grade, not only about percentage.
Structure sets viscosity and dispersion behaviour. High-structure carbon black builds a stronger network, which raises viscosity and makes dispersion harder; low-structure grades flow more easily but give less colour per kilogram. This is the trade-off behind most “why does my black behave differently” questions.
The carbon black industry classifies by N-number (N110, N220, N330, N550 and so on), where the number relates to particle size class and the letter to structure. If a supplier cannot tell you the carbon black type behind a grade, they are describing an outcome rather than a specification.

What you need	Loading direction	What to ask for
Deep black for visible parts	Higher loading or finer carbon	Jetness target plus a colour sample per lot
UV protection outdoors	2–2.5% carbon in the finished part	Confirmation the let-down delivers that in the part, not in the bag
Lowest cost with opacity	Higher loading, often with filler	Ash content, so carbon and total loading are separated
Thin film or high draw ratio	Loading set by dispersion limits	Filter pressure value with mesh size and test polymer

See our grade overview for the loadings we run across carriers, and the carbon black content testing note for how to verify a loading claim rather than trust it.

Questions buyers ask

Does higher loading always mean better protection?

Up to a point. UV protection improves with carbon loading and dispersion together, and past a certain level the masterbatch becomes hard to disperse, which creates defects. We help you find the point that works rather than maximising the number.

Will a 50% grade disperse in my polymer?

It depends on the polymer and your shear. Tell us what you run and we will confirm a loading that disperses cleanly, and say so if 50% is too much for your process.

What is the minimum quantity?

One ton per specification. High-load grades are worth proving on your own line before ordering in volume, so we quote the trial lot and the production lot separately.

How fast can we get a trial lot?

Typically 5–10 days to most markets. For high-load grades we also tell you the dispersion check to run when the lot arrives, so you can judge it on your own equipment.

Get a factory quote

Tell us what you are running and how much you need. We reply with a firm factory quote — and, if you want to test before committing, a free 1–5 kg sample compounded on your own carrier resin. No obligation.