Covestro Makrolon WB1239 PC
Material attribute: ·Food grade ·Branched polycarbonate
Package: 25KG/Bag
Melt index (MFI or MVR): 2.5g/10min (300℃ 1.2kg)
Package: 25KG/Bag
Melt index (MFI or MVR): 2.5g/10min (300℃ 1.2kg)
Covestro Makrolon WB1239 PC pellet Description
Makrolon WB1239 is a food grade polycarbonate resin pellet (PC material) manufactured by Covestro AG. It offers excellent transparency and impact resistance. Through branched modification, it effectively enhances the processability of PC material, providing advantages in thick-walled product manufacturing. WB1239 PC is suitable for producing water buckets of 20 liters and above.
Covestro Makrolon WB1239 PC Advantage
- Food grade PC material, Makrolon WB1239 PC meets food safety standards and complies with the relevant requirements of FDA 21 CFR 177.1580 and EU 10/2011.[1] It is particularly suitable for the production of large drinking water containers made by blow molding or extrusion, and offers excellent food safety performance.
- Excellent machinability, Makrolon WB1239 PC material employs a branched processing method, enhancing the material's moldability and improving processing conditions for thick-walled polycarbonate products. Under test conditions of 300°C and 1.2kg, this material exhibits a melt flow index (MFI or MVR) of 2.5g/10min, indicating slower flow characteristics. It is suitable for manufacturing thick-walled products.
- Excellent mechanical properties. Covestro WB1239 polycarbonate resin pellets achieve an impact strength of 75 kJ/m² in the notched Charpy test at 23°C and 3 mm. Even under extreme low-temperature conditions of -30°C, it maintains a strength of 20 kJ/m², making it suitable for applications demanding high impact resistance, such as drinking water containers.
Why choose Baiyou as Covestro Makrolon WB1239 PC pellets supplier?
- Leading food grade polycarbonate resin pellets supplier (PC material) , 20+ years of experience in plastic product manufacturing and chemical raw material import and export
- Fastest Arrival, with warehouses in multiple ports
- 1,000+ types of resins are available, and we have cooperated with large petrochemical groups for 30+ years
- Free Samples for production testing
- Wholesale price, even a piece of goods is based on the wholesale price
Key Attributes
| Covestro Makrolon WB1239 PC | |||
| Product information | |||
| Manufacturer | Covestro AG | ||
| Other Certificates | MSDS | ||
| Part Marking Code | >PC material< | ||
| Color | Transparent | ||
| Material Shape | PC Pellets | ||
| Process | ·Extrusion molding | ||
| Features | ·Food contact grade ·FDA | ||
| Application | Drinking water containers of 20 liters or more | ||
| Physical properties | Standard | Value | Unit |
| Density 23℃ | ISO 1183-1 | 1200 | kg/m³ |
| Gas transmission rate at 23℃, oxygen,100μm film | ISO 2556 | 740 | cm³/(㎡-24hr-bar) |
| Gas transmission rate at 23℃, nitrogen,100μm film | ISO 2556 | 140 | cm³/(㎡-24hr-bar) |
| Gas transmission rate at 23℃, carbon dioxide,100μm film | ISO 2556 | 4200 | cm³/(㎡-24hr-bar) |
| Linear mold shrinkage, flow at 60*60*2mm | ISO 294-4 | 0.75 | % |
| Linear mold shrinkage, normal at 60*60*2mm | ISO 294-4 | 0.8 | % |
Melt mass-flow rate at 300℃ 1.2kg (MFI or MFR = Melt flow index or MI =Melt index) | ISO 1133 | 2.5 | g/10min |
| Melt volume flow rate (MVR) | ISO 1133 | 2 | cm³/10min |
| Water absorption at saturation at 23℃,50% R.H. | ISO 62 | 0.12 | % |
| Water absorption at saturation at 23℃ | ISO 62 | 0.3 | % |
| Water vapor permeability at 23℃.85% RH, 100μm film | ISO 15106-1 | 15 | g/(㎡-24hr) |
| Hardness | Standard | Value | Unit |
| Hardness, ball indentation at 23℃, 50% R.H. | ISO 2039-1 | 108 | N/m㎡ |
| Optical properties | Standard | Value | Unit |
| Haze at 3mm, for transparent materials | ISO 14782 | ＜0.8% | |
| Refractive index | 1.587 | ||
| Transmission visible at 1mm, for clear transparent material | ISO 2368-2 | 88 | % |
| Transmission visible at 2mm, for clear transparent material | ISO 2368-2 | 87 | % |
| Transmission visible at 3mm, for clear transparent material | ISO 2368-2 | 84 | % |
| Mechanical behavior | Standard | Value | Unit |
| 3.5% flexural stress at 23℃, 50% R.H. 2mm/min | ISO 178 | 70 | MPa |
| Flexural modulus at 23℃,50% R.H. 2mm/min | ISO 178 | 23000 | MPa |
| Flexural strain at flexural strength at 23℃,50% R.H. 2mm/min | ISO 178 | 7.2 | % |
| Flexural strength at 23℃,50% R.H. 2mm/min | ISO 178 | 94 | MPa |
| Impact strength, Charpy at -30℃, 50% R.H. | ISO 179/1eU | No break | |
| Impact strength, Charpy at -60℃, 50% R.H. | ISO 179/1eU | No break | |
| Impact strength, Charpy at 23℃, 50% R.H. | ISO 179/1eU | No break | |
| Impact strength, notched charpy at -30℃ 50%,R.H. 3mm | ISO 179/1eA | 20 | kJ/㎡ |
| Impact strength, notched charpy at 23℃ 50%,R.H. 3mm | ISO 179/1eA | 75 | kJ/㎡ |
| Impact strength, notched Izod at -30℃ 50%,R.H. 3mm | ISO 180/1eA | 55 | kJ/㎡ |
| Impact strength, notched Izod at -30℃ 50%,R.H. 3mm | ISO 180/1eA | 65 | kJ/㎡ |
| Modulus of elasticity at 23℃, 50% R.H. 1mm/1min | ISO 527-1.-2 | 2300 | MPa |
| Nominal strain at break at 23℃, 50% R.H. 50mm/10min | ISO 527-1,-2 | ＞50 | % |
Puncture energy at 23℃, 50% R.H. | ISO 6603-2 | 55 | J |
| Puncture energy at -30℃, 50% R.H. | ISO 6603-2 | 60 | J |
| Puncture maximum force at -30℃, 50% R.H. | ISO 6603-2 | 6400 | N |
| Puncture maximum force at 23℃, 50% R.H. | ISO 6603-2 | 5500 | N |
| Strain at break at 23℃, 50 R.H. 50mm/min | ISO 527-1,-2 | 100 | % |
| Stress at break at 23℃, 50 R.H. 50mm/min | ISO 527-1,-2 | 65 | MPa |
| Yield strain at 23℃, 50 R.H. 50mm/min | ISO 527-1,-2 | 6.6 | % |
| Yield stress at 23℃, 50 R.H. 50mm/min | ISO 527-1,-2 | 64 | MPa |
| Thermal | Standard | Value | Unit |
| CTE,Linear at 23 to 55℃ | ISO 11359-1,-2 | 0.7*10⁻⁴ | 1/K |
| CTE,Linear at 23 to 55℃ | ISO 11359-1,-2 | 0.7*10⁻⁴ | 1/K |
| Deflection temperature at 0.46MPa (66 psi) | ISO 75-1,-2 | 145 | ℃ |
| Deflection temperature at 1.8MPa (264 psi) | ISO 75-1,-2 | 132 | ℃ |
| Glass transition temperature (Tg) at 10℃/min | ISO 11357-1,-2 | 152 | ℃ |
| Resistance to heat ball pressure test | IEC 60695-10-2 | 144 | ℃ |
| Thermal conductivity at 23℃, 50% R.H. | ISO 8302 | 0.2 | W/m-K |
| Vicat softening temperature at 50℃/hr, 50 N | ISO 306 | 150 | ℃ |
| Vicat softening temperature at 120℃/hr, 50 N | ISO 306 | 151 | ℃ |
| Flammability properties | Standard | Value | Unit |
| Auto-ignition temperature | ASTM D1929 | 550 | ℃ |
| Flash point | ASTM D1929 | 480 | ℃ |
| Glow wire flammability index (GWFI) at 3.0mm | IEC 60695-2-12 | 930 | ℃ |
| Glow wire flammability index (GWFI) at 0.75, 1.5mm | IEC 60695-2-12 | 900 | ℃ |
| Glow wire ignition temperature (GWIT) | IEC 60695-2-13 | 900 | ℃ |
| Limiting oxygen index (LOI) | ISO 4589-2A | 26 | % |
| Injection molding | Standard | Value | Unit |
| Drying temperature | 120 | ℃ | |
| Melt temperature | 310 | ℃ | |
| Moisture content | 200 | % | |
| Mold temperature | 80-120 | ℃ | |
| Barrel front temperature | 280-290 | ℃ | |
| Barrel middle temperature | 270-280 | ℃ | |
| Barrel nozzle temperature | 290-300 | ℃ | |
| Barrel rear temperature | 250-260 | ℃ | |
| Drying time | 2-3 | h | |
| Hold pressure | 50-75 | % | |
| Plastic back pressure | 50-150 | bar | |
| Screw speed, peripheral | 0.05-0.2 | m/s | |
| Shot-to-cylinder size | 30-70 | % | |
| Velocity | 200 | mm/s | |
| Vent depth | 0.025-0.075 | mm | |
⚠️The technical data sheet (TDS) of Covestro Makrolon WB1239 transparent polycarbonate material from Covestro AG, if there are differences, please refer to the official website of Covestro.
Partners
We have established long-term relationships with 80+ well-known companies around the world |
Warehouse And Shipping
20+ years' experience consultant with a supply chain of 1000+ plastic raw materials in China. |
Quantity (tonnes) | 1-100 | 100-300 | >300 |
Lead time (days) | 7-10 | 10-15 | To be negotiated |
References and Notes
- Covestro,"Makrolon WB1239 water in good shape", Covestreo AG, 17/06/2026
Best Selling Product
