what is pp copolymer？
PP copolymer is a type of polymer made by combining propylene with one or more other monomers. This combination modifies the properties of the resulting plastic, such as improving its flexibility, impact resistance, or clarity, depending on the specific monomers used and their arrangement in the polymer chain.
Types of PP Copolymer:
Random copolymer polypropylene (PP‑R) contains small amounts of ethylene randomly incorporated into the propylene chain. This structure lowers its melting point and enhances flexibility and low‑temperature impact resistance, while also improving clarity. PP‑R is therefore widely used in food containers, medical devices, PP‑R piping systems and packaging films.
Impact copolymer polypropylene (often called PP‑B or block copolymer) is produced by introducing 5–15 percent ethylene in distinct blocks throughout the polymer matrix. This block structure delivers excellent impact resistance and higher overall toughness and strength, at the expense of increased opacity and reduced stiffness. Common applications include automotive components, industrial containers, piping, and household appliances.
supply Various Grades of PP copolymer
Impact PP copolymer(PP-Impact) is a thermoplastic polymerized from propylene using a Ziegler-Natta catalyst system, offering enhanced toughness and impact resistance. View All
| Grade No. | Manufactuer | MFI | Properties | Application |
| BJ368MO | Borouge | 70 | DOWNLOAD | Articles for daily use |
| BD265MO | Borouge | 7 | DOWNLOAD | |
| BD950MO | Borouge | 7 | DOWNLOAD | Packaging tools, containers |
| BH975MO | Borouge | 38 | DOWNLOAD | Shells, cups, shield |
| BF970MO | Borouge | 20 | DOWNLOAD | Sealed appliances, toys |
| JM-350 | LOTTE | 10 | DOWNLOAD | Toys, containers, sporting goods |
| BE961MO | Borouge | 12 | DOWNLOAD | Furniture, daily supplies |
| 36MK10 | Sabic | 5.5 | DOWNLOAD | Household supplies, packaging, shield |
| RP2400 | Yuhwa | 0.25 | DOWNLOAD | Pallets, buckets |
PP-R (Polypropylene Random Copolymer) is produced by randomly copolymerizing propylene with a small amount of ethylene, enhancing flexibility and heat resistance. View All
| Grade No. | Manufactuer | MFI | Properties | Application |
| RD265CF | Borouge | 8 | DOWNLOAD | Metallisable cast film, Multilayer co-extrustioni film |
| RD208CF | Borouge | 8 | DOWNLOAD | Lamination film, Cast film, Stretch film, textile packaging,sealing layer for co-extrustion |
| RD239CF | Borouge | 8 | DOWNLOAD | Lamination tubes, Stationery film, textile packaging,tissue layer film |
| RE420MO | Borouge | 13 | DOWNLOAD | Pails, Food containers, lids, drinking water bottles |
| RG568MO | Borouge | 30 | DOWNLOAD | Hinged closures, pumps and closure assemblies, food container,media packags |
| RJ768MO | Borouge | 70 | DOWNLOAD | Household items, thin wall products, caps |
| RJ766MO | Borouge | 70 | DOWNLOAD | Household items, thin wall products, caps |
| RF825MO-12 | BOROUGE | 20 | DOWNLOAD | Disposable diagnostic equipment, medical needles, connecting catheters |
| RF830MO-12 | BOROUGE | 20 | DOWNLOAD | Medical needles, connecting catheters |
| RJ880MO-12 | BOROUGE | 45 | DOWNLOAD | Boxes, bottle caps, medical care supplies |
| R200P | HYOSUNG | 0.25 | DOWNLOAD | Hot and cold water pipe |
| RP2400 | YUHWA | 0.25 | DOWNLOAD | Pressure pipes, hot water and floor heating pipes |
| PPR3221 | Total | 1.8 | DOWNLOAD | Cosmetics packaging, daily necessities packaging, consumables |
| PPR7220 | Total | 10 | DOWNLOAD | Cosmetic bottle caps, household items |
| RC5003 | POLYMIRAE | 13 | DOWNLOAD | Household items, containers, vases |
| R3410 | LG | 7 | DOWNLOAD | |
| R680S | SK | 28 | DOWNLOAD | Transparent tape, laminate, food packaging applications |
| BH3820 | SK | 28 | DOWNLOAD | Industrial applications, automotive applications, electrical appliances |
| SM198 | LOTTE | 1.6 | DOWNLOAD | Containers, lids, plates, structural parts |
| SM488 | LOTTE | 20 | DOWNLOAD | Containers, storage containers, baby bottles, medical care products, household products |
| SM498 | LOTTE | 20 | DOWNLOAD | Containers, packaging, bottles, large products |
| SM598 | LOTTE | 30 | DOWNLOAD | Storage container, thin wall container |
| 9074ED | ExxonMobil | 24 | DOWNLOAD | Medical packaging, hypodermic syringe components, medical applications |
| 4935 | Sabic | 0.3 | DOWNLOAD | Industrial applications |
| QR6701K | Sabic | 10 | DOWNLOAD | Transparent Household items and package, caps,electrical appliance |
| QR6731K | Sabic | 25 | DOWNLOAD | Transparent Household items and package, caps,electrical appliance |
| QR6711K | Sabic | 45 | DOWNLOAD | Household items, thin wall products, caps |
| 3140NN | IRPC | 11 | DOWNLOAD | Baby bottles, microwave containers, injection stretch blow molding applications |
| 3342R | IRPC | 20 | DOWNLOAD | Food containers, storage boxes, household items |
| 3342M | IRPC | 9 | DOWNLOAD | Containers, bottles, storage boxes, household items, transparent parts |
| 3375RM | IRPC | 24 | DOWNLOAD | Waterproof canvas, BOPP film, paper coating, extrusion coating supplies |
| K4510 | IRPC | 10 | DOWNLOAD | Baby bottles, household items |
| K4510B | IRPC | 10 | DOWNLOAD | Food containers, household items |
| K4510ET | IRPC | 10 | DOWNLOAD | Disposable syringes, medical devices, household products |
| K4527 | IRPC | 27 | DOWNLOAD | Household items |
| K4527B | IRPC | 27 | DOWNLOAD | Household items |
| K4527ET | IRPC | 27 | DOWNLOAD | Disposable syringes, medical devices |
| K4527GR | IRPC | 27 | DOWNLOAD | Disposable syringes, medical devices, household products |
PP Copolymer: Tougher Than Your Monday Mornings!
PP copolymer FAQs
What is PP Copolymer and how is it different from PP Homopolymer
PP Copolymer is a type of polypropylene that includes small amounts of ethylene to enhance its impact resistance and flexibility. Compared to PP Homopolymer, which is more rigid and has higher heat resistance, PP Copolymer is tougher, less brittle at low temperatures, and better suited for applications requiring durability and resilience, such as automotive parts, industrial containers, and piping systems.
What industries commonly use PP Copolymer
PP Copolymer is used across multiple industries, including:
Automotive: Bumpers, battery cases, dashboards, interior trims
Packaging: Food containers, bottle caps, film wraps
Piping & Plumbing: Hot and cold water pipes (PP-R), industrial pipe systems
Household Products: Storage bins, furniture parts, appliances
Medical & Healthcare: Syringes, medical trays, IV components
What are the processing methods for PP Copolymer
PP Copolymer is versatile and can be processed using:
Injection Molding (for automotive parts, containers, household items)
Extrusion (for pipes, sheets, and profiles)
Blow Molding (for bottles and hollow containers)
Thermoforming (for packaging trays and food containers)
It has flow properties, making it easy to mold into complex shapes while maintaining strength.
How does PP Copolymer perform under extreme temperatures
PP Copolymer has a melting point of around 130-170°C (266-338°F) and can withstand cold temperatures better than PP Homopolymer. While it remains impact-resistant at low temperatures, excessive heat exposure may cause deformation, so it is not suitable for high-temperature applications like engineering plastics (e.g., PEEK or PPS).
How does PP Copolymer compare to ABS in terms of strength and flexibility
PP Copolymer is more flexible and chemical-resistant than ABS, making it better suited for applications requiring impact resistance and environmental durability.
ABS is stronger and stiffer, offering better dimensional stability and surface finish, which is why it is preferred in electronics and consumer products.
PP Copolymer is lighter and cheaper, making it more cost-effective for bulk applications in packaging and industrial uses.
How is PP Copolymer Made
PP Copolymer is produced through the polymerization of propylene (C₃H₆) with a controlled amount of ethylene (C₂H₄) in the presence of specialized Ziegler-Natta or metallocene catalysts.
Manufacturing Process:
Polymerization Reaction:
Propylene and a controlled amount of ethylene are fed into a reactor.
A Ziegler-Natta catalyst or a metallocene catalyst is used to initiate polymerization.
The reaction occurs under controlled temperature (50-80°C) and pressure (10-35 bar) to achieve the desired polymer structure.
Ethylene content is adjusted to create either random copolymer (PP-R) or impact copolymer (PP-B).
Polymer Formation:
In random copolymers, ethylene units are randomly distributed along the polymer chain, improving clarity and flexibility.
In impact copolymers, higher ethylene content forms rubbery phases within the material, enhancing toughness and low-temperature impact strength.
Separation & Drying:
The polymer slurry is separated from the catalyst and unreacted gases.
It is then washed, neutralized, and dried to remove impurities.
Pelletization:
The polymer is melted and extruded into strands.
The strands are cut into uniform pellets, which are then cooled and packaged for industrial use.