Factory and Activities
Specifications
General Information
| Property | Value |
|---|---|
| Product Name | High Concentration Black and White Masterbatch |
| Product Type | Pigment concentrate (color masterbatch) |
| Compatible Polymers | PE, PP (primary); ABS, HIPS (secondary) |
| Manufacturer | Zhejiang Bastone Technology Co., Ltd |
| Production Site | Hangzhou, China |
| Appearance | Cylindrical or spherical particles |
Technical Properties
| Property | Value | Unit |
|---|---|---|
| Temperature Resistance | 220–280 | °C |
| Sun Resistance | 5–8 | Blue wool rating |
| Titanium Dioxide Content (white grade) | 50–70 | % |
| Carbon Black Content (black grade) | 30–50 | % |
| Appearance | Cylindrical or spherical particles | — |
Recommended Processing Conditions
| Parameter | Value |
|---|---|
| Let-Down Ratio | 1:1 to 1:100 (by end-product requirement) |
| Addition Method | Mix with base colorant at the specified ratio; ready to use once evenly coated |
| Pre-Drying | Not required |
| Processing Temperature Range | 220–280°C |
| Suitable Processes | Injection molding, extrusion, granulation, fiber processing, blow molding, blown film |
Applications
Injection molding takes the largest share of demand. Molders coloring PE and PP housings, closures, crates, and automotive interior parts benefit from the pellet geometry, which meters consistently through standard dosing units, and from the no-drying requirement, which removes a hopper-dryer step from changeovers. High pigment loading also means less masterbatch sits in the barrel, reducing the purge volume needed when switching from black to a light color.
Extrusion and pipe production rely on the black grade's carbon black content and its 5–8 sun resistance rating. Carbon black at 30–50% concentration gives extruders room to dial in the 2–2.5% finished carbon loading that outdoor pressure pipe typically requires, while the temperature resistance ceiling of 280°C tolerates the shear heat generated in high-output single-screw and twin-screw lines.
Blown film runs demand consistent dispersion at low addition rates, since undispersed pigment agglomerates show up immediately as gels and lens defects in thin gauges. Both grades pelletize on a polyolefin carrier that melts and disperses within the PE film window, and the 1:100 let-down capability lets film producers color at economical rates without overloading the extruder with carrier resin.
Granulation and fiber processing represent the more demanding end of the range. Fiber spinning tolerates almost no pigment agglomeration — a single oversized particle breaks the filament — so the dispersion quality behind the high loading matters more than the loading itself. Buyers spinning PP fiber should request a sample and run a filter pressure value test against their own spin pack before scaling up.
ABS and HIPS injection coloring is supported, with the caveat stated in the datasheet: mechanical strength can be affected depending on the proportion added. The 280°C upper temperature limit covers standard ABS and HIPS processing, but a polyolefin-carrier masterbatch in a styrenic matrix introduces carrier incompatibility that shows up as impact strength loss at higher addition rates. Keeping the let-down ratio conservative usually resolves the issue.
Why Choose BASTONE
BASTONE manufactures the masterbatch series directly rather than reselling another compounder's product. Formulation, pigment dispersion, pelletizing, and batch testing all happen under BASTONE's own quality control at the Hangzhou production facility, which means specification questions, non-standard loading requests, and batch consistency issues get answered by the people who made the material — not relayed through a supply chain.
The parent group runs 4 production sites and 1 R&D center, and the chemists behind the masterbatch formulation also support BASTONE's broader chemical portfolio. Buyers who need a carrier change for a specific base resin, a pigment loading between the standard bands, or a technical opinion on let-down ratios for an unusual application can get a formulation answer rather than a catalog answer.
Direct manufacturer supply removes the trading-house margin from the landed cost. BASTONE exports through Zhejiang Bastone Technology Co., Ltd, a platform built over 10+ years of export operations, and handles trade term flexibility, container loading planning, and export documentation in-house. Buyers sourcing masterbatch alongside polyolefin resins, additives, or other petrochemicals can consolidate multiple product categories into a single supplier relationship and a single shipment.
Sourcing & Logistics
| Item | Detail |
|---|---|
| Supply Origin | Manufactured by BASTONE, Hangzhou, China |
| Packaging | 25 kg kraft paper bags with polyethylene liner |
| Storage | Dry, ventilated conditions to maintain quality |
| Export Entity | Zhejiang Bastone Technology Co., Ltd |
| Documentation | COA, packing list, commercial invoice, certificate of origin, MSDS |
| Trade Terms | Flexible — FOB, CFR, CIF available |
| Sample Availability | Samples available on request for trial and dispersion testing |
Contact BASTONE at RM327, BLDG1, 291 Fucheng Road, Hangzhou 310018, China · Tel: 0571-86711106. Specify grade (black or white), target pigment loading, base resin, and process type when requesting a quotation, and BASTONE will confirm the matching formulation and let-down ratio.