Polypropylene
The polypropylene resin supplied by Chelora Chemicals — a stereoregular polyolefin combining stiffness, chemical resistance and a high melting point — exported from Indonesia as virgin pellet with full batch documentation on every shipment.
What Polypropylene is, and why buyers source it
A working overview of the resin's stereoregular structure, how that structure governs its stiffness and heat resistance, and the grades Chelora Chemicals keeps in regular supply.
Polypropylene is a polyolefin built from the propylene monomer, whose methyl side-group, when the catalyst arranges every repeat unit in the same stereochemical orientation (isotactic), allows the chain to fold into a tightly ordered helical crystal structure. That high degree of order gives commercial, predominantly isotactic polypropylene a notably higher melting point, stiffness and chemical resistance than polyethylene, while still being lighter (lower density) than nearly every other commodity thermoplastic.
At room temperature it is supplied as a translucent to opaque white pellet. Besides the homopolymer, two further commercial families exist: random copolymer, where a small amount of ethylene is copolymerised at random points along the chain to improve clarity and lower the melting point slightly for applications needing a better seal, and impact copolymer, where a rubbery ethylene-propylene phase is incorporated to substantially raise low-temperature impact resistance at some cost to stiffness.
Where it fits in the value chain
Polypropylene's unusual combination of a high melting point, low density, good chemical resistance and a living-hinge-capable flexural fatigue resistance has made it one of the highest-volume commodity plastics in the world. Homopolymer grades dominate rigid packaging, fibres and injection-moulded durable goods; random copolymer grades are preferred for retortable food packaging and pipe fittings needing clarity and a lower sealing temperature; impact copolymer grades are specified wherever low-temperature impact resistance is critical, such as automotive bumpers and battery cases.
Grades we supply
Chelora Chemicals offers Polypropylene homopolymer, random copolymer and impact copolymer grades across standard melt-flow-rate ranges for injection moulding, fibre, film and blow-moulding applications. Each grade is supplied with a batch-wise certificate of analysis covering melt flow rate, density and additive package.
How Polypropylene is produced
An overview of the production route for orientation purposes. Our manufacturing partners' own process parameters and in-process controls are proprietary and are not disclosed beyond what is needed to interpret the certificate of analysis.
Polypropylene is produced by stereospecific polymerisation of propylene, using a Ziegler-Natta or metallocene catalyst system capable of controlling the orientation of each propylene unit's methyl group as it is added to the growing chain, in gas-phase or liquid (bulk) slurry reactor processes. Highly isotactic, highly crystalline homopolymer is the commercially dominant product; the catalyst's stereospecificity is what makes the resin's characteristic high melting point and stiffness possible in the first place, since a random (atactic) arrangement of methyl groups would prevent the ordered crystal packing entirely.
Random copolymer grades are made by introducing a small, controlled amount of ethylene comonomer at random points during the same polymerisation; impact copolymer grades are made in a two-stage reactor process, first polymerising the isotactic homopolymer matrix and then, in a second reactor stage, polymerising an ethylene-propylene rubber phase in situ within the still-active homopolymer particles, giving a finely dispersed rubber-toughened morphology that cannot be achieved by simple mechanical blending after the fact.
Industries and processes that use it
Polypropylene is consumed across rigid packaging, fibres, automotive parts and durable injection-moulded goods. The fields below account for most of the demand we see through our export desk.
Rigid Packaging & Caps/Closures
Injection- or blow-moulded into food containers, caps and closures, valued for its high melting point (microwave- and hot-fill-safe) and chemical resistance.
Fibres & Nonwovens
Melt-spun into fibres for carpet, rope, woven sacks and spunbond/meltblown nonwoven fabrics used in hygiene products and filtration media.
Automotive Parts
Impact copolymer grades injection-moulded into bumpers, interior trim, battery cases and under-the-hood components needing impact resistance and heat tolerance.
Pipe, Film & Durable Goods
Random copolymer used in pipe fittings and retort packaging; homopolymer used in biaxially oriented film (BOPP) and household durable goods.
How the resin is typically converted forward
The stereoregular, crystalline structure governs almost all of Polypropylene's further processing behaviour. The categories below account for most of the ways it is converted into a finished part.
Injection Moulding
Melted and injected into a mould cavity under pressure to form caps, containers, automotive parts and durable goods, exploiting PP's living-hinge flexural fatigue resistance.
Fibre Spinning
Melt-extruded through fine spinnerets and drawn to orient the polymer chains, producing fibres for carpet, rope and woven sack applications.
Nonwoven Formation (Spunbond/Meltblown)
Molten polymer is extruded into continuous or ultrafine fibres and laid directly into a web to form nonwoven fabric without a separate weaving step.
Biaxial Orientation (BOPP Film)
Cast film is stretched in both the machine and transverse directions, aligning the crystalline structure to give high-clarity, high-strength oriented film.
Polypropylene against related monomer and polyolefin products we supply
Buyers sourcing polypropylene resin often also need the propylene monomer itself, or a related polyolefin grade. A quick reference to what else is on our regular supply list.
| Product | CAS Number | Category | Notes |
|---|---|---|---|
| Polypropylene | 9003-07-0 | Stereoregular polyolefin | The product on this page — a stiff, chemically resistant, high-melting-point resin. |
| Propylene | 115-07-1 | Olefin monomer | The monomer this entire polymer is built from — see its product page. |
| Polyethylene (HDPE) | 9002-88-4 | Linear, high-density polyethylene | A related rigid polyolefin resin, often competing for the same packaging applications — see its product page. |
| Polystyrene | 9003-53-6 | Styrenic resin | A related commodity resin used in rigid and foamed packaging — see its product page. |
Exact physical constants and processing specifications are confirmed per batch on the certificate of analysis — treat the notes above as a sourcing guide, not a specification sheet, for products other than Polypropylene.
Safety classification at a glance
Based on GHS classification as commonly listed for this substance. This is a summary for orientation only — always work from the current safety data sheet supplied with your specific batch.
Not classified as hazardous under GHS in solid pellet form.
Combustible; pellets and especially fine dust can support combustion once ignited.
Minimise accumulation of polymer dust/fines, which present a greater ignition risk than pellets.
Processing equipment handles the resin molten; standard hot-surface and fume-extraction precautions apply at the extruder.
Standard gloves and eye protection are sufficient for routine handling of pellets.
May emit irritant fumes if processed well above normal processing temperature or involved in a fire.
Not classified; refer to the batch MSDS for grade-specific guidance.
This product has a low hazard profile in its solid pellet form and is not classified as hazardous under GHS. The principal handling precautions concern combustible-dust accumulation from fines generated during conveying and bagging, and standard hot-surface precautions during melt processing. Full first-aid, storage, spill and PPE guidance is in the MSDS issued with every shipment, and should be read in full before this material is handled.
Keeping it on spec between delivery and use
General storage guidance for this grade. Site-specific storage rules, segregation requirements and re-test intervals should follow your own EHS procedures and the MSDS issued with your batch.
Store in a dry, ambient-temperature warehouse, out of direct sunlight and away from heat sources, since prolonged UV and heat exposure can degrade the resin's additive package and processing behaviour. Keep bags sealed to prevent moisture pickup and contamination with other resin grades. Re-check melt flow rate and moisture content on material held past its retest date before processing.
How it ships from Indonesia
Standard packing and export terms for this product. Confirm exact figures against your order — they vary slightly by destination and quantity.
What travels with every batch
Specification is agreed before the purchase order, not discovered on arrival. Every shipment of Polypropylene leaves with a documented, checkable paper trail.
Certificate of Analysis
Batch-wise assay, colour and key physical constants, issued against the agreed specification so your QC team can check it, not just file it.
Safety Data Sheet
GHS-format SDS in English covering hazard classification, handling, storage, first-aid and spill response for the exact grade shipped.
Technical Data Sheet
Reference physical and chemical properties, recommended storage and typical applications, for internal circulation to your process or R&D teams.
Certificate of Origin
Confirms Indonesian origin for customs clearance and any preferential-duty claim at your destination port.
Dangerous Goods Declaration
UN packing group, classification and shipper's declaration prepared ahead of loading so documentation never holds up customs.
Third-Party Inspection
Independent pre-shipment inspection and re-sampling can be arranged on request, at your cost, for buyers who require it as a matter of policy.
Frequently asked questions
What buyers most often ask our sales desk about this grade.
01What is Polypropylene used for?+
02What is the difference between PP homopolymer, random copolymer and impact copolymer?+
03How is Polypropylene produced?+
04What grades does Chelora Chemicals supply?+
05Is Polypropylene hazardous?+
06Why does Polypropylene have such a high melting point for a commodity plastic?+
07What packing options are available?+
08How long does delivery take?+
09Can I get a sample before placing a bulk order?+
10Do you supply the propylene monomer as well?+
Need Polypropylene on spec, on time?
Send us your required grade (homo/random/impact copolymer), melt flow rate, application and destination port. Our desk quotes most enquiries within one working day.