High Concentration Carrier-Free Black Masterbatch

This high-concentration carrier-free black masterbatch is specifically designed for PP/PE black compounding. Formulated with high-pigment carbon black and calcium carbonate filler, the carbon black concentration is approximately 45%, achieving efficient and uniform coloring during the compounding process. Its carrier-free nature optimizes its dispersibility and compatibility, making it suitable for a wide range of polyolefin modification applications and ensuring stable material properties.
In practical applications, this masterbatch effectively enhances the compound's resistance to UV aging, thereby extending its service life in outdoor or high-light environments. It also improves its impact and heat resistance, ensuring excellent compatibility and reliability in injection molding, extrusion, and other processing techniques. The recommended usage level for this masterbatch is 1-3%, and its blending with raw materials can meet the performance requirements of different products.

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Parameter

# BLACK MASTERBATCH Y07B

Y07B is NO Carrier, carbon black with calcium carbonate filler. Carbon black concentration is around 45%. Applicable for compounding, no carrier.

Ingredients	Carbon Black: 45%±2
Ingredients	ASH: <10%
Usage	Mixed with materials.
Dosage	suggested 1-3%.
Technical Index	Density: <2.0g/cm3
	Melting Speed:>1g/10min(21.6kg/190℃)
	Moisture:<0.50%
Package	25kg per bag, KP bag or PE bag
Storage	Place in dry and cool warehouse, avoid sun shine and raining.
Note	The above index is based on the testing result for reference only, not as the specific index.

PP/PE Modified Series — Carrier-Free + CaCO₃

High Concentration Carrier-Free Black Masterbatch — Grade Y07B

Y07B combines two formulation characteristics that appear contradictory but are deliberately paired for PP/PE compounding: carrier-free design for maximum polymer compatibility, and calcium carbonate filler for structural and economic contribution. Most masterbatches choose one or the other — either clean (no carrier, no filler) or filled (carrier + CaCO₃). Y07B uses both simultaneously, targeting the specific requirements of polyolefin black compounding where structural enhancement and CB concentration efficiency are both relevant.

No carrier — but why pair it with filler?

Carrier-free means no foreign polymer phase in the PP/PE compound. CaCO₃ filler is inorganic — it doesn't introduce a polymer incompatibility. The combination delivers CB without a carrier phase, while the filler contributes nucleation and stiffness benefits that a fully clean (no-carrier, no-filler) grade cannot provide.

45% CB + filler — how does the ash stay below 10%?

The specification reads ash <10%, which bounds the total CaCO₃ content. The CaCO₃ loading is moderate — sufficient for the nucleating and cost-reduction effect, but not high enough to dominate the masterbatch composition or significantly reduce the effective CB delivery per gram of addition.

Grade Y07B sits at the intersection of three PP/PE compounding requirements: high CB concentration for color efficiency, absence of a polymer carrier for resin compatibility, and controlled mineral loading for structural benefit. This combination doesn't exist in E-LUCK's other grades — it is the unique characteristic of Y07B for PP/PE black compounding specifically.

45%

Carbon Black

None

Carrier Polymer

<10%

Ash (CaCO₃)

MFR g/10min

Technical Data Sheet

Y07B — Complete Parameter Reference

Parameter	Specification	Method / Notes
Grade Code	Y07B	PP/PE Modified Series — Carrier-Free + CaCO₃
Carrier Resin	None — Carrier-Free	No PE or PP carrier polymer; binder + filler system only
Carbon Black Content	45% ± 2%	High-pigment furnace grade; efficient coloring at 1–3% letdown
Filler	Calcium Carbonate (CaCO₃)	Controlled loading — contributes nucleation and minor stiffness; ash <10%
Ash Content	< 10%	ISO 3451 — combined CB ash + CaCO₃ content
Density	< 2.0 g/cm³	ISO 1183
Melt Flow Rate	> 1 g/10 min	190°C / 21.6 kg — lower MFR floor due to CaCO₃ viscosity effect
Moisture Content	< 0.50%	CaCO₃ filler is mildly hygroscopic; pre-dry if stored in high humidity
Recommended Dosage	1% – 3%	Blend directly with PP/PE base resin in hopper or compound feeder
Compatible Processes	PP/PE compounding, injection molding, extrusion	Primary application is polyolefin compounding on twin-screw lines
Packaging	25 kg / bag (KP or PE bag)	Sealed; dry warehouse away from moisture and UV

Grade Positioning

Y07B vs Other PP/PE Compounding Masterbatch Approaches

The matrix below positions Y07B against three alternative approaches for PP/PE black compounding. Each column represents a real formulation choice a compounder faces.

Criterion

Y07B — This Grade

PE-Carrier Filled Grade

CB Concentration

45% — high efficiency per gram

13–40% — varies by grade

Carrier Polymer

None — no foreign polymer phase

PE carrier present — minor immiscible phase in PP compounds

Mineral Filler

CaCO₃ present (<10% ash) — nucleating + minor stiffness benefit

Varies — 0% to 70%+ ash

PP Compounding Compatibility

No PE carrier phase to manage in PP compound

PE carrier introduces minor incompatible phase

Effective CB at 2% Dosage

0.90% CB in compound — strong coloring

0.26–0.80% depending on grade

Structural Contribution

CaCO₃ nucleation improves PP crystallinity and HDT

Depends on filler content; high-filler grades contribute more but may reduce impact

Best Application

PP/PE black compounding requiring polymer purity + CB efficiency

General coloring where carrier compatibility is acceptable

Applications

Where Y07B Is the Right Compounding Choice

PP Black Compounding — Multi-Additive Formulas

Compounders running PP with impact modifiers, flame retardants, or antistatic agents need a black masterbatch that doesn't introduce a competing PE polymer phase into the formula. Y07B's carrier-free design means the only non-PP polymer entering the compound from the masterbatch is the minimal wax/binder fraction at trace levels. For toughened PP and FR PP specifically, this matters because PE carrier can disrupt the carefully engineered modifier network.

PE Pipe & Fitting Compounding

Black HDPE/MDPE pipe compound requiring coloring plus a moderate structural contribution from CaCO₃ nucleation. For drainage pipe where ring stiffness matters and potable water purity requirements don't apply, Y07B's CaCO₃ content provides a nucleating benefit to the PE crystalline structure that slightly improves dimensional stability and heat deflection properties relative to a fully clean masterbatch at equivalent dosage.

Blow Molding — HDPE Containers & Drums

Black HDPE blow-molded containers (storage drums, industrial containers, chemical barrels) where the CB loading at 1.5–2% provides full wall opacity and UV protection for outdoor storage. Carrier-free addition means the HDPE compound's environmental stress crack resistance (ESCR) — critical for chemical container applications — is not compromised by a PE-carrier incompatibility effect that can appear in thin-wall blow molding at elevated stress-crack exposure conditions.

FAQ

Y07B Technical Questions

What is the difference between Y07B and SY-65, which is also carrier-free?+

Both Y07B and SY-65 are carrier-free, but they differ in three key respects. First, SY-65 contains no filler (ash <10% from CB only, no CaCO₃), while Y07B contains CaCO₃ filler contributing to the ash content. Second, SY-65 is formulated and validated specifically for ABS, PS, and PC engineering plastics, while Y07B is targeted at PP/PE polyolefin compounding. Third, SY-65 has a much higher CB concentration (65%) versus Y07B (45%), reflecting the higher CB loading needed for efficient coloring in the transparent/translucent engineering resins where SY-65 is used. The two grades serve different polymer systems and should not be interchanged: SY-65 for ABS/PS/PC modification, Y07B for PP/PE compounding.

Does the CaCO₃ in Y07B affect the compound's ESCR (environmental stress crack resistance) in HDPE applications?+

At 2% Y07B dosage, the CaCO₃ contribution to the HDPE compound is approximately 0.18% by weight (based on <10% ash at 2% addition). At this concentration, the CaCO₃ loading is too low to create the stress concentration sites that characterize the ESCR reduction seen in heavily filled HDPE compounds (typically above 5% direct CaCO₃ addition). ESCR in HDPE is highly sensitive to filler loading and particle size at the 5–20% range, but at sub-0.2% CaCO₃ introduction from the masterbatch, no measurable ESCR effect is expected in standard ESCR test methods (ASTM D1693, ISO 22088). For chemical container or pipe applications with documented ESCR specifications, confirm by testing the compound at your intended dosage before production qualification.

PP/PE Compounding — Y07B Trial Available

Specify your base resin grade, twin-screw configuration, and target compound ash content. We'll confirm Y07B compatibility and recommended dosage for your specific compounding formula.

About Us

E-LUCK .

As China High Concentration Carrier-Free Black Masterbatch Factory and China High Concentration Carrier-Free Black Masterbatch Suppliers, E-LUCK is a professional manufacturer and solution provider specializing in black masterbatch for industrial applications. Since our founding, we have remained committed to the core values of precision, consistency, and material intelligence, integrating advanced dispersion technology with rigorous quality systems to meet the increasingly complex demands of modern polymer processing. From pipes and fittings to automotive parts, from consumer electronics to packaging films, our black masterbatches play a quiet yet critical role in enhancing product appearance, performance, and lifecycle for a wide range of downstream industries.