| HS Code | 905165 |
| Density | 0.905 g/cm³ |
| Melt Flow Rate | 3.5 g/10min (230°C/2.16kg) |
| Tensile Strength | 35 MPa |
| Flexural Modulus | 1600 MPa |
| Izod Impact Strength | 3.5 kJ/m² |
| Heat Deflection Temperature | 105°C (0.45 MPa) |
| Melting Point | 165°C |
| Elongation At Break | 10% |
| Shore Hardness | D72 |
| Vicat Softening Point | 155°C |
As an accredited Propilven PP Homopolymer factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Propilven PP Homopolymer is supplied in 25 kg polyethylene-lined woven bags, palletized and stretch-wrapped for safe transport. |
| Container Loading (20′ FCL) | Propilven PP Homopolymer loaded in 20′ FCL: 25 kg bags on pallets, shrink-wrapped and secured for safe transport. |
| Shipping | Propilven PP Homopolymer ships as non-hazardous polypropylene pellets in sealed moisture-resistant bags or bulk containers. Avoid excessive heat, direct sunlight, and humidity during transit. Keep dry, handle gently to prevent bag damage, and store in a cool, ventilated area after delivery. Standard dry freight transport is suitable. |
| Storage | Store Propilven PP Homopolymer in a cool, dry, well-ventilated area, away from direct sunlight, heat, and ignition sources. Keep containers sealed and protected from moisture and physical damage. Avoid contact with strong oxidizers. No special storage requirements are needed under normal conditions, but maintain good housekeeping and proper labeling to preserve product quality. |
| Shelf Life | Propilven PP Homopolymer has a shelf life of 12 months when stored in sealed original packaging under dry, cool conditions. |
Injection moulding of thin-wall homopolymer containers from Propilven PP homopolymer with a nominal melt flow rate of 25–35 g/10 min under ISO 1133-1:2022 at 230 °C and 2.16 kg is executed on hydraulic toggle presses in the 1,500–3,000 kN clamp force range for multi-cavity tools with projected areas of 400–700 cm². Warpage in dairy containers and delicatessen tubs is reduced by a dimethylbenzylidene sorbitol nucleating agent dosed at 0.10–0.25 wt%, which raises crystallization onset temperature by 8–12 °C under ISO 11357-3:2018 and shortens cooling time before ejection. The formulation also includes calcium stearate at 0.05–0.10 wt% as acid scavenger, a primary phenolic antioxidant at 0.05–0.10 wt%, a secondary organophosphite at 0.05–0.10 wt%, and glycerol monostearate antistat at 0.10–0.20 wt% only where static discharge interferes with in-mould labelling or downstream conveying. Melt temperature at the nozzle is maintained at 220–250 °C, mould wall temperature at 10–30 °C, injection velocity at 100–200 mm/s, hold pressure at 40–70 MPa, and screw back pressure at 0.5–1.0 MPa. The terminal product envelope covers round and rectangular dairy cups, deli tubs, tamper-evident caps and closures, and non-sterile specimen containers. Food-contact status is established under FDA 21 CFR 177.1520(c)(1.1) and (c)(3.1), while EU food-contact compliance is evaluated under Regulation (EU) No 10/2011 Annex I overall migration limits of 10 mg/dm². The operational boundary for this application is low-temperature impact: unmodified homopolymer containers become brittle when stacked or dropped below 0 °C, and long-term frozen-food use requires either a random copolymer transition or impact modification.
| Standard or Regulation | Cited Clause or Test Method | Compliance Condition in Rigid Packaging |
|---|---|---|
| FDA 21 CFR 177.1520 | (c)(1.1), (c)(3.1) | PP homopolymer may contact aqueous, acidic, and fatty foods at room temperature; hot-fill conditions require migration validation at the intended fill temperature. |
| Regulation (EU) No 10/2011 | Annex I, Annex II | Overall migration ≤ 10 mg/dm²; specific migration of slip and antistat additives must remain within listed SML values. |
| REACH Annex XVII | Entries 50, 51, 52 | Phthalate restriction applies to plasticised formulations; homopolymer materials must not intentionally contain restricted phthalates above threshold values. |
| RoHS Directive 2011/65/EU | Annex II | Lead ≤ 0.1 wt%, cadmium ≤ 0.01 wt%, mercury ≤ 0.1 wt%, hexavalent chromium ≤ 0.1 wt% at homogeneous material level. |
| ISO 1133-1:2022 | Method A | Melt flow rate control for lot-to-lot consistency during thin-wall filling; target 25–35 g/10 min at 230 °C/2.16 kg. |
| ASTM D4101-17e1 | Cell class PP0100 | Base resin designation for injection-grade PP homopolymer without impact modification or flame retardant. |
Sequential biaxial orientation of a cast sheet produced from a 2.5–3.5 g/10 min Propilven PP homopolymer converts spherulitic monoclinic α-phase into fibrillar crystallites; the optical haze in an 18 µm film is governed less by base resin composition than by antiblock particle size, chill-roll replication, and draw uniformity. A BOPP tenter line running melt temperature at 240–260 °C and chill roll temperature at 15–25 °C produces a cast sheet with reduced β-phase content. The machine-direction orientation unit applies 4.5–5.5:1 at 120–135 °C, and the transverse-direction stenter imposes 8–10:1 at 155–170 °C. Heat setting at 140–160 °C reduces film shrinkage to ≤ 3% in both axes as measured by ASTM D1204-14 at 120 °C. Synthetic silica antiblock is added at 0.10–0.20 wt% with a median particle size of 2–4 µm; erucamide slip is dosed at 0.05–0.15 wt%, and a migratory antistatic additive at 0.05–0.15 wt% is used where static discharge affects winding or corona treatment. Slip concentrations above 0.25 wt% are avoided because of die lip plate-out and decay of corona-treated surface energy below 38–42 mN/m. The relevant food-contact standards are FDA 21 CFR 177.1520(c)(1.1) and Regulation (EU) No 10/2011 Annex I, with specific migration testing required for the slip and antistat package under Annex II restrictions. Tensile modulus in the machine direction is typically 2,000–2,500 MPa under ISO 527-3:2018. Terminal product types include metallized snack packages, bakery overwrap, clear label facestock, pressure-sensitive tape base film, and tobacco overwrap. The operational boundary is gas barrier: uncoated homopolymer film does not provide oxygen or aroma barrier, and vacuum metallization, acrylic coating, or PVdC coating is required before use in barrier laminations.
Compounding of a 35 wt% total filler system based on 20 wt% talc and 15 wt% chopped glass fibre in Propilven PP homopolymer with a base MFR of 11–13 g/10 min is carried out on a co-rotating twin-screw extruder with L/D 40:1 and side-feeding at barrel zone 5. Melt temperature is maintained at 190–230 °C, screw speed at 300–500 rpm, and specific mechanical energy input at 0.20–0.30 kWh/kg. Maleic anhydride grafted PP coupling agent is dosed at 0.5–1.0 wt% to reduce interfacial debonding at the glass fibre surface, while an antioxidant blend at 0.20–0.40 wt% and hindered amine light stabilizer at 0.10–0.30 wt% preserve long-term heat-ageing performance under ISO 188:2023 at 150 °C for 1,000 h. The injection-moulded door substrate is processed at melt temperature 210–250 °C, mould temperature 30–60 °C, holding pressure 60–80 MPa, and cooling time 20–35 s depending on rib thickness. Mechanical requirements are verified under ISO 527-2:2012, ISO 178:2019, ISO 75-2:2013 Method A, and ISO 180:2019. Interior emissions compliance is assessed under VDA 277:2019 for total VOC and VDA 270:2018 for odour, with typical acceptance at odour grade ≤ 3.0 and a VOC ceiling maintained by minimizing low-molecular-weight processing aid carryover. Terminal product types include door module substrates, instrument panel carriers, seat back panels, air duct housings, and parcel shelves. The limitation of unmodified homopolymer at low temperature is explicit: notched Izod impact at −20 °C drops below 2.5 kJ/m² without external elastomer modification, so applications requiring subzero ductility use 5–10 wt% ethylene-octene elastomer addition at the expense of HDT and modulus.
| Filler System | Tensile Modulus under ISO 527-2:2012 | Flexural Modulus under ISO 178:2019 | HDT at 1.8 MPa under ISO 75-2:2013 | Notched Izod at 23 °C under ISO 180:2019 |
|---|---|---|---|---|
| 20 wt% talc | 1,900 MPa | 2,400 MPa | 72 °C | 4.0 kJ/m² |
| 30 wt% talc | 2,700 MPa | 3,400 MPa | 90 °C | 3.5 kJ/m² |
| 20 wt% chopped glass fibre | 4,000 MPa | 4,500 MPa | 130 °C | 8.0 kJ/m² |
| 30 wt% chopped glass fibre | 5,500 MPa | 6,500 MPa | 150 °C | 10.0 kJ/m² |
In spunbond nonwoven production, controlled-rheology Propilven PP homopolymer with a post-reactor peroxide-visbroken melt flow rate of 35–45 g/10 min under ISO 1133-1:2022 is extruded through a spinneret with hole diameters of 0.3–0.5 mm at melt temperature 230–260 °C. The peroxide masterbatch used for visbreaking is dosed at 0.05–0.15 wt%, balanced against residual peroxide carryover that can increase extractables in hygiene-grade nonwovens. A phenolic primary antioxidant at 0.10–0.20 wt%, an organophosphite secondary antioxidant at 0.05–0.15 wt%, and an acid scavenger at 0.05–0.10 wt% maintain molecular weight stability during repeated residence time fluctuations at the spin beam. For hydrophilic acquisition layers, a melt-additive wetting agent is used at 0.20–0.40 wt%; improper dispersion creates strike-through defects and affects rewet performance. Quench air is supplied at 12–18 °C, drawing air pressure at 0.4–0.8 bar, and calender bonding at 135–155 °C with nip pressure 40–70 N/mm consolidates the web. Product uniformity is tested for basis weight under ISO 9073-1, tensile strength under ISO 9073-3, and air permeability under ISO 9237:1995. Medical face mask media is additionally evaluated for bacterial filtration efficiency under EN 14683:2019 Annex B. Terminal product types include melt-blown filter media, spunbond hygiene acquisition and distribution layers, surgical gown fabrics, and absorbent pad coverstock. The operational boundary is melt strength: as MFR exceeds 45 g/10 min, filament denier uniformity deteriorates and web tensile strength falls below process capability thresholds for low-basis-weight products below 12 g/m².
Ribbed and corrugated non-pressure drainage pipe extruded from a low-MFR Propilven PP homopolymer with 0.3–0.5 g/10 min at 230 °C/2.16 kg under ISO 1133-1:2022 is processed on a single-screw extruder with L/D 30:1 and a pipe die maintained at 190–210 °C. The corrugator mould blocks apply vacuum at 0.6–0.9 bar and water spray at 15–25 °C to set the outer profile before the inner wall is fused. Carbon black masterbatch at 2.0–2.5 wt% is added for UV stabilization, a hindered amine light stabilizer at 0.10–0.30 wt% extends outdoor weathering life under ISO 4892-2:2013, calcium carbonate at 5–10 wt% increases ring stiffness, and a phenolic antioxidant at 0.20–0.40 wt% protects against melt degradation during extended runs at back pressure 15–25 MPa. Ring stiffness is verified under ISO 9969:2016; SN8 classification requires ring stiffness ≥ 8 kN/m². Falling-mass impact resistance under EN 1411:1996 is the limiting test for brittle failure at installation temperatures below 0 °C. The relevant product standard is EN 1451-1:2017 for PP structured-wall piping used in soil and waste discharge. Terminal product types include underground land drainage pipe, cable ducting, agricultural drainage pipe, and sewerage fittings. The operational boundary is clear: unmodified homopolymer does not meet the long-term hydrostatic strength requirements for pressurized hot and cold water systems covered by ISO 15874-2:2013, and subzero impact performance depends on profile geometry, wall thickness, and installation compaction rather than base resin toughness.
Syringe barrels injection-moulded from clarified Propilven PP homopolymer with MFR 12–20 g/10 min under ISO 1133-1:2022 are validated for terminal sterilization at 25–50 kGy gamma doses. The principal degradation mode is free-radical chain scission initiated by high-energy photons; its severity depends on the phenolic/phosphite stabilizer package, the post-irradiation storage temperature, and the residual stress history in the barrel wall. A sorbitol-based clarifier at 0.20–0.35 wt% improves light transmission to 84–88% at 1 mm under ASTM D1003-13, while a radiation-tolerant hindered amine stabilizer at 0.10–0.20 wt% and a primary antioxidant at 0.10–0.20 wt% reduce yellowing but do not eliminate post-dose oxidative embrittlement. Moulding is performed in an ISO Class 8 cleanroom with melt temperature 200–230 °C, hot-runner valve gates to reduce local shear, and mould temperature 10–20 °C. Compliance testing includes USP 661.1 and USP 661.2 for plastic packaging materials, USP 88 Class VI biological reactivity, FDA 21 CFR 177.1520(c)(1.1) for food-contact use, ISO 10993-5:2009 for cytotoxicity, ISO 10993-10:2021 for skin sensitization and irritation, and ISO 10993-18:2020 for chemical characterization. Terminal product types include syringe barrels without needle, pipette tips, diagnostic cuvettes, and specimen collection cups. At doses above 35 kGy, yellowness index increases beyond 10 under ASTM E313-20, and thin-wall tip cracking becomes more frequent; published data for this specific configuration is limited above 50 kGy, so ethylene oxide sterilization is preferred where post-dose colour stability and retained impact are non-negotiable.
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Propilven PP Homopolymer is an isotactic polypropylene supplied in pellet form under CAS registry number 9003-07-0. The polymer is produced over a fourth-generation Ziegler-Natta catalyst system and is controlled-rheology vis-broken to target melt mass-flow rate. Commercial designations include Propilven PP-H 3.0, PP-H 12, and PP-H 25, where the suffix corresponds to nominal melt mass-flow rate in g/10 min at 230 °C under 2.16 kg load in accordance with ISO 1133-1:2022. The product is specified for injection moulding, sheet extrusion, oriented tape, BOPP film, and spunbond nonwoven applications in which stiffness, heat resistance, and flow length are more important than low-temperature impact strength and optical clarity. The absence of ethylene comonomer distinguishes this grade from propylene random copolymer, increasing crystallinity and rigidity while reducing subambient toughness.
Release specifications for the 12 g/10 min grade control melt mass-flow rate between 10 g/10 min and 14 g/10 min, density between 0.900 g/cm³ and 0.910 g/cm³, tensile yield stress not less than 32 MPa, flexural modulus not less than 1,300 MPa, notched Charpy at 23 °C not less than 2.5 kJ/m², and ash not more than 0.05 wt%. The corresponding test methods are ISO 1133-1:2022, ISO 1183-1:2019, ISO 527-2:2012, ISO 178:2019, ISO 179-1:2010, and ISO 3451-1:2019. Water absorption after 24 h immersion in distilled water at 23 °C is below 0.05 wt% by ISO 62:2008. Natural unfilled homopolymer literature values include volume resistivity above 1016 Ω·cm and dielectric constant of 2.2 to 2.6 at 1 MHz; these electrical properties are supplier-independent approximations and should be re-verified on the finished grade.
Injection moulding of the 12 g/10 min grade has been characterized on a 1,200 kN hydraulic clamp machine using a 22:1 L/D general-purpose polyolefin screw. Barrel-zone settings from feed to nozzle are 180 °C, 210 °C, 230 °C, 240 °C, and 230 °C. Screw speed on a 50 mm injection unit is normally 80 rpm to 120 rpm, with melt cushion maintained at 3 mm to 5 mm. Decompression after recovery is set at 2 mm to 4 mm to reduce nozzle drool. Melt temperature at the nozzle should remain below 250 °C; above 260 °C, oxidative chain scission raises melt mass-flow rate and widens molecular-weight distribution, producing visible warp in unpigmented parts after 72 h post-mould aging. Injection pressure at transfer ranges from 70 MPa to 140 MPa. Hold pressure is applied at 60% to 80% of transfer pressure for wall stock between 2.0 mm and 4.0 mm. Back pressure of 0.5 MPa to 2.0 MPa is sufficient for homogenization without excessive shear heating. Mould surface temperature is controlled at 20 °C to 50 °C; the upper half of this range improves dimensional stability but lengthens cycle time. Mould shrinkage measured in accordance with ISO 294-4 is 1.0% to 1.5% parallel to flow and 1.1% to 1.6% perpendicular to flow in a 2.0 mm plaque. Dimensional inspection should be delayed for 24 h after ejection because post-mould crystallization continues at 23 °C. Cold edge-gate freeze time for a 2.0 mm wall is 2 s to 4 s, while valve-gated hot-runner systems seal in 1.5 s to 2.5 s. Clamp force demand is approximately 2.5 kN to 4.0 kN per square centimeter of projected area.
Sheet, tape, and BOPP conversion do not normally require twin-screw compounding. Single-screw extruders with 25:1 to 30:1 L/D, a compression ratio of 2.5:1 to 3.5:1, and melt filtration through 60/80/100 mesh screen packs are adequate for melt preparation. For oriented raffia tape, quench-bath temperature is maintained at 30 °C to 50 °C; lower settings freeze surface layers and reduce drawability, while higher settings coarsen crystal structure and lower tape tenacity. Oven draw ratio of 6:1 to 8:1 at 120 °C to 150 °C produces tape tenacity of 0.35 N/tex to 0.45 N/tex and elongation at break of 15% to 25%. In BOPP tenter lines, cast-sheet temperature is normally held at 40 °C to 55 °C, machine-direction orientation is carried out at 140 °C to 150 °C, and transverse-orientation ovens are set at 155 °C to 165 °C. Strain-induced orientation raises machine-direction tensile strength above cast-sheet values, but line speed, air-gap geometry, and tenter-clip temperature create site-specific variation; published data for a specific film line should be obtained before setting specification limits.
The melting peak of Propilven PP Homopolymer measured by differential scanning calorimetry under ISO 11357-3 is 162 °C to 168 °C. Vicat softening temperature under ISO 306/A50 is 150 °C to 156 °C, and heat deflection temperature under ISO 75-2/B at 0.45 MPa is 90 °C to 105 °C. These thermal values permit short-term hot-fill and microwave reheat exposure, but continuous load-bearing service above 90 °C is not recommended without creep data generated under ISO 899-1. Oxidative induction time at 200 °C by ISO 11357-6 depends on the antioxidant package and regrind fraction; for a standard processing-stabilized grade, OIT is normally above 20 min, but repeated heat histories from regrind fractions above 20 wt% shorten induction time. The resin is non-hygroscopic and drying is normally unnecessary, but surface condensation from high-humidity silo storage can be removed by 80 °C desiccant-air drying for 2 h. Copper, brass, and copper-containing pigments should be avoided in processing equipment because copper ions catalyze thermo-oxidative chain scission. Unstabilized or unpigmented parts are not suitable for outdoor exposure; carbon black at 2 wt% or an effective hindered-amine stabilizer package is required for ultraviolet resistance.
From a crystallization standpoint, the unmodified homopolymer solidifies as α-phase spherulites. In slow-cooled sections, spherulite diameter can reach 50 µm to 150 µm, while thin-wall injection moulded parts cooled at 20 °C to 50 °C display a finer skin-core morphology. Nucleating agents added at 0.05 wt% to 0.20 wt% reduce spherulite size and raise crystallization temperature by approximately 8 °C to 12 °C. This can shorten cooling time in thick sections but may also reduce flow length in high-cavitation moulds. Such modifications are grade-specific and should be validated on the actual tool because published data for this particular product configuration are limited.
The 3.0 g/10 min grade is selected for oriented tape and extrusion blow moulding where melt strength controls process stability. The 12 g/10 min grade is used in injection moulded caps, closures, thin-wall food containers, housewares, and appliance components. The 25 g/10 min grade is directed to high-cavitation moulds and spunbond nonwoven production where flow length is prioritized over impact. In spunbond lines operating at 200 °C to 240 °C die temperature, filament diameter is commonly held between 15 µm and 25 µm. Spinneret temperature variation above ±1.5 °C across the die has been associated with measurable basis-weight nonuniformity in the web. Closure torque and package drop resistance are finished-article properties and cannot be inferred from Charpy data alone; converter-specific application protocols remain the controlling requirement.
Replacing a random copolymer with Propilven PP Homopolymer in a rigid package increases stiffness and heat resistance but reduces low-temperature impact and see-through clarity. At an equivalent melt mass-flow rate of 12 g/10 min, the homopolymer exhibits tensile modulus of 1,450 MPa to 1,700 MPa by ISO 527-2, while a propylene random copolymer containing 2.0 wt% to 3.5 wt% ethylene typically exhibits 900 MPa to 1,200 MPa. Notched Charpy at 0 °C measured by ISO 179-1/1eA is 1.0 kJ/m² to 2.5 kJ/m² for the homopolymer, compared with 4.0 kJ/m² to 8.0 kJ/m² for random copolymer. Optical haze through a 1.0 mm plaque by ASTM D1003 is 30% to 60% for the homopolymer and 5% to 15% for random copolymer. The homopolymer should therefore be selected only when the package is opaque or tinted and when the service environment does not include subzero drop impact.
| Property | Propilven PP-H 12 | Propylene random copolymer | Propylene impact copolymer |
|---|---|---|---|
| Tensile modulus, ISO 527-2 | 1,450–1,700 MPa | 900–1,200 MPa | 1,000–1,400 MPa |
| Charpy notched impact, ISO 179-1/1eA at 23 °C | 2.0–4.5 kJ/m² | 6.0–12.0 kJ/m² | 10.0–30.0 kJ/m² |
| Charpy notched impact, ISO 179-1/1eA at 0 °C | 1.0–2.5 kJ/m² | 3.0–6.0 kJ/m² | 5.0–12.0 kJ/m² |
| Heat deflection temperature, ISO 75-2/B at 0.45 MPa | 90–105 °C | 70–85 °C | 75–95 °C |
| Haze, ASTM D1003 through 1.0 mm | 30–60% | 5–15% | opaque |
Relative to high-density polyethylene, Propilven PP Homopolymer has lower density and higher Vicat softening temperature, but lower resistance to environmental stress cracking in detergent and industrial chemical packaging. Conversion from HDPE should not proceed without stress-crack evaluation under ISO 22088-2 or ASTM D1693 and chemical compatibility testing under the intended service conditions. The material is also not a direct substitute for heterophasic impact copolymer in automotive battery cases, luggage shells, or freezer containers; those applications require the low-temperature impact levels shown in the comparative matrix.
Regulatory compliance is established on the finished article, not on the pellet alone. Propilven PP Homopolymer may satisfy food-contact requirements under FDA 21 CFR 177.1520(c) and under Commission Regulation (EU) No 10/2011 provided that overall migration does not exceed 10 mg/dm² under the intended food simulant and time/temperature conditions. The grade does not intentionally contain cadmium, lead, mercury, hexavalent chromium, PBB, or PBDE above the maximum concentration values of RoHS Directive 2011/65/EU. Under REACH Regulation (EC) No 1907/2006, propylene monomer and stabilizer components require registration; the absence of substances of very high concern above 0.1 wt% should be confirmed by the supplier for each lot intended for the specific commercial use. ISO 10993 biocompatibility and USP Class VI are not granted by the base resin alone; they require formulation control, sterilization validation, and extractables testing on the final device. The certificate of analysis lists melt mass-flow rate, density, tensile yield stress, flexural modulus, notched Charpy, and ash, with lot-to-lot MFR variability normally controlled to ±2.0 g/10 min around the nominal 12 g/10 min.
| Standard or regulation | Scope | Typical condition for Propilven PP-H |
|---|---|---|
| FDA 21 CFR 177.1520(c) | Olefin polymer food contact | Compliant when finished article migration tests pass |
| Commission Regulation (EU) No 10/2011 | Plastic food contact materials | Overall migration limit 10 mg/dm² |
| RoHS Directive 2011/65/EU | Restricted substances | Below maximum concentration values |
| REACH Regulation (EC) No 1907/2006 | Registration and SVHC declaration | No SVHC above 0.1 wt% |
| ISO 19069-1:2015 | Polypropylene designation system | PP-H injection/extrusion grade |
For components exposed to repeated steam sterilization at 121 °C, such as reusable trays or laboratory vessels, the homopolymer can undergo post-crystallization and warpage; nucleated grades with controlled shrinkage and heat-stabilizer packages are preferred. In continuous load-bearing applications above 80 °C, creep testing under ISO 899-1 is required before design acceptance. Electrical and electronic parts requiring a flame retardancy rating higher than UL 94 HB at 3.0 mm are outside the standard grade capability and require a compounded flame-retardant version.
