| HS Code | 615421 |
| Density | 0.98 g/cm³ |
| Melt Flow Rate 230 C 2 16kg | 20 g/10min |
| Tensile Stress At Yield | 19 MPa |
| Tensile Elongation At Break | 300 % |
| Flexural Modulus | 1400 MPa |
| Charpy Notched Impact 23 C | 55 kJ/m² |
| Charpy Notched Impact 30 C | 12 kJ/m² |
| Ball Indentation Hardness | 38 MPa |
| Vicat Softening Temperature 10n | 135 °C |
| Heat Deflection Temperature 0 45 Mpa | 95 °C |
As an accredited Hifax M2 U13 C11306 PP Copolymer factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Hifax M2 U13 C11306 PP Copolymer is packaged as 25 kg pellets in polyethylene-lined bags, palletized and shrink-wrapped for shipment. |
| Container Loading (20′ FCL) | 20′ FCL: Hifax M2 U13 C11306 PP Copolymer packed in 25kg bags on pallets, loaded, secured, and containerized for safe transport. |
| Shipping | Hifax M2 U13 C11306 PP Copolymer is a polypropylene copolymer supplied as solid pellets. Ship in clean, dry containers or lined bags, avoiding moisture and excessive heat. Non-hazardous under normal transport, but keep away from ignition sources and ensure proper labeling, handling, and ventilation. |
| Storage | Store Hifax M2 U13 C11306 PP Copolymer in a cool, dry, well-ventilated area, away from direct sunlight, heat, and ignition sources. Keep containers tightly sealed to prevent moisture absorption and contamination. Avoid stacking bags excessively high to prevent deformation. Maintain moderate temperatures and low humidity; product shelf life is optimal under these conditions. |
| Shelf Life | Hifax M2 U13 C11306 PP Copolymer has a shelf life of 5 years when stored in original, unopened packaging under dry, cool conditions. |
Across paintless exterior trim platforms, the specification for Hifax M2 U13 C11306 is evaluated against low-velocity multiaxial impact at sub-zero temperatures, retained surface appearance after filtered xenon weathering, and dimensional stability through thermal cycling from -40 °C to 80 °C. Outer trim applications on passenger vehicles and light commercial vehicles require compliance with OEM material standards that commonly reference ISO 179-1 Charpy notched impact, ISO 527-1 and ISO 527-2 tensile properties, ISO 6603-2 instrumented puncture, ISO 868 hardness, SAE J2527 or ISO 4892-2:2013 method A for exterior weathering, and EU ELV Directive 2000/53/EC for end-of-life vehicle recyclability. The converter-side formulation for a paintless wheel arch liner, rocker molding, or bumper lower skirt is typically 98.0–99.0 wt% Hifax M2 U13 C11306, 1.0–2.0 wt% OEM-approved exterior-grade color masterbatch where the C11306 variant is not pre-coloured, and 0.2–0.5 wt% hindered amine stabilizer masterbatch only when total UV exposure exceeds 3,000 kJ/m²; dried in-plant regrind of the same grade may be introduced up to 20 wt%, provided the melt flow rate measured under ISO 1133-1:2022 remains within ±1.5 g/10 min of the virgin lot and notched Charpy impact at -30 °C is re-tested after regrind addition. Production-scale processing on large exterior components uses a hot runner injection molding machine with clamp force between 1,500 t and 2,800 t, a 25:1–30:1 L/D general-purpose polyolefin screw, melt temperature at the nozzle of 220–250 °C, mold temperature of 20–50 °C, injection pressure of 70–110 MPa, holding pressure of 50–70 MPa, back pressure of 0.5–1.0 MPa, and screw speed of 40–80 min⁻¹. Moisture-related surface splay has been observed on production lines when material stored at relative humidity above 60% is processed without drying; the corrective control is 2–4 h dehumidified drying at 80 °C with a dew point below -20 °C. Terminal finished part types include unpainted wheel arch liners, rocker panel moldings, bumper lower skirts and valance panels, rear bumper step pads, and front grille lower trim inserts.
| Parameter | Window | Control basis |
|---|---|---|
| Melt temperature | 220–250 °C | Nozzle thermocouple |
| Mold temperature | 20–50 °C | Tool surface probe |
| Injection pressure | 70–110 MPa | Hydraulic pressure transducer |
| Holding pressure | 50–70 MPa | Switchover position |
| Back pressure | 0.5–1.0 MPa | Screw return |
| Screw speed | 40–80 min⁻¹ | Recovery time |
| Regrind limit | ≤20 wt% | ISO 1133-1:2022 and ISO 179-1 |
The instrument panel carrier segment imposes a different constraint set from exterior trim: low gloss retention, low volatile emission, and impact ductility after airbag deployment are considered against processing limits caused by the rubber phase distribution in the PP impact copolymer matrix. Interior material standards in global platforms typically require VDA 277 total carbon emissions below 50 µg C/g, VDA 278 VOC and fogging chromatographic limits, DIN 75201 fogging reflectance above 80% on a 100 °C bath, and ISO 3795 or FMVSS 302 burn rate below 100 mm/min. A representative low-emission interior formulation contains 96.5–97.5 wt% Hifax M2 U13 C11306, 2.0–3.0 wt% OEM-approved interior color concentrate, 0.3–0.5 wt% low-VOC antioxidant masterbatch, and 0.2–0.5 wt% amide-free scratch modifier; talc masterbatch is not added at the starting point unless flexural modulus above the neat impact copolymer range is specified, and any talc introduction is limited to 5–10 wt% with re-verification of ISO 179-1 notched impact. Injection molding lines for instrument panel carriers commonly use 800–2,000 t clamp force machines with sequential valve-gate control, melt temperature of 220–240 °C, mold temperature of 30–50 °C, injection velocity of 50–150 mm/s at the gate, and holding pressure of 45–65 MPa for 8–12 s. Early gate freeze at wall thickness below 1.8 mm has been reported as a recurring defect; the corrective approach is to raise mold temperature to 50 °C and increase holding time rather than increasing melt temperature, which can raise total carbon emissions. External silicone-based mold release agents are excluded from interior production because they migrate to the surface and raise fogging values. Finished products include instrument panel lower carriers, door panel inserts, center console side covers, pillar trim backing, and seat surround trims.
In horizontal-axis washing machine outer tubs, long-term creep under unbalanced spin loads and detergent solution attack at elevated temperature control the fitness for use of a high-impact PP copolymer. Household appliance plastic parts are assessed under IEC 60335-1:2020 clause 30 for resistance to heat and fire, UL 746B long-term thermal aging for relative thermal index, ASTM D543 for chemical resistance to detergent, bleach, and sodium hydroxide solutions, and IEC 60695-2-11 glow wire ignition; REACH 1907/2006 Annex XVII and RoHS 2011/65/EU apply to electrical and electronic appliances. The tub compound is formulated with 100 parts Hifax M2 U13 C11306, 0.2–0.5 phr nucleating masterbatch to stabilise shrinkage, 0.2–0.4 phr long-term heat stabilizer masterbatch, and 0.1–0.3 phr process lubricant; post-industrial regrind from the same tub line is held below 15 wt% because repeated heat exposure during drying and molding causes viscosity drift that weakens the weld line at the bearing insert. Production equipment for tub molding includes a two-platen injection molding machine with 1,200–2,400 t clamp force, a 24:1–28:1 L/D screw with a low-shear mixing tip, melt temperature of 230–250 °C, mold temperature of 40–70 °C, injection time of 3–8 s, holding pressure of 50–80 MPa, and cooling time of 25–45 s for wall sections between 3.0 mm and 4.5 mm. A documented production failure mode is weld-line splitting at the bearing insert during spin testing; this is corrected by moving the weld line away from the bearing boss with sequential valve gating and by increasing mold temperature to 60–70 °C. Detergent exposure tests are performed at 80 °C in 0.5% sodium hydroxide and 1.0% detergent solution for 200–500 h prior to impact testing, depending on the appliance platform. Finished article types include outer tubs, spinner housings, pump housings, base frames, and detergent drawer housings.
| Requirement | Standard | Test condition |
|---|---|---|
| Detergent chemical resistance | ASTM D543 | 80 °C, 0.5% NaOH, 200–500 h |
| Heat and fire resistance | IEC 60335-1:2020 clause 30 | Glow wire per IEC 60695-2-11 |
| Long-term thermal aging | UL 746B | RTI based on end-use wall thickness |
| Impact after aging | ISO 179-1 | -20 °C Charpy notched after detergent immersion |
Where UV-stabilized PP impact copolymer replaces coated steel or thermoset sheet in outdoor equipment housings, the material selection test cycle is shorter and less complex than automotive or appliance platforms. Hifax M2 U13 C11306 is processed in thick-section injection molding or gas-assisted injection molding at melt temperatures of 210–240 °C and mold temperatures of 20–40 °C; the formulation typically incorporates 1.0–2.0 wt% HALS-rich UV masterbatch, 0.2–0.4 wt% processing stabilizer, and 2.0–3.0 wt% outdoor-grade color concentrate. Weatherability is assessed by ISO 4892-2:2013 method A or ISO 4892-3 for UV-only exposure, with impact retention measured before and after weathering using ISO 179-1 Charpy notched specimens. Terminal products include injection-molded garden chair shells, table tops, lawn and garden equipment shrouds, and trimmer guards.
Monolithic logistics articles produced from Hifax M2 U13 C11306 are driven by stiffness under rack load, impact toughness at cold-storage temperatures, and process repeatability in thick rib junctions. Loaded pallet qualification follows ISO 8611-1 test methods for flat pallets, while container articles are checked for stackability and drop resistance under ISO 2234 stacking and ISO 2248 vertical drop procedures; general chemical compliance is documented under REACH 1907/2006 Annex XVII. The compounding addition ratio for a black logistics article uses 96.0–98.0 wt% Hifax M2 U13 C11306, 2.0–3.5 wt% carbon black masterbatch, 0.2–0.5 wt% processing aid, and up to 30 wt% closed-loop regrind from rejected articles, provided the notched Charpy impact value is verified to remain above 80% of the virgin reference under ISO 179-1. High-speed injection molding lines for pallet and collapsible container production operate with accumulator-assisted injection units, clamp forces of 1,000–2,500 t, melt temperature 220–250 °C, mold temperature 15–40 °C, injection pressure 80–120 MPa, and holding pressure 60–90 MPa. Rib-pull sink at intersections between deck ribs and feet is a recognised production defect in thick-section pallet molding; the countermeasure is gas-assisted molding or lower packing pressure for the first 3–5 s of holding, combined with mold temperature profiling. Finished articles include display pallets, collapsible bulk containers, ventilated crates, and dunnage trays.
Under-hood air management applications for a medium-flow PP impact copolymer include fan shrouds, air intake scoops, and washer fluid reservoirs where the operating window spans -40 °C cold start to 90 °C intermittent heat soak. The compliance framework for these components includes UL 94 HB flammability classification, ISO 75-1/ISO 75-2 heat deflection temperature, ISO 188 accelerated heat aging, and OEM-specific thermal cycling tests from -40 °C to 90 °C for 200–500 cycles. A representative formulation uses 96.5–97.5 wt% Hifax M2 U13 C11306, 2.0–4.0 wt% colour concentrate, 0.3–0.6 wt% long-term heat stabilizer masterbatch, and 0.1–0.3 wt% acid scavenger; regrind from under-hood parts is limited to 15 wt% because retained heat stabilizer concentration drops with each reheat. Injection molding on 600–1,200 t clamp force machines uses melt temperature 230–250 °C, mold temperature 30–60 °C, injection pressure 70–110 MPa, and holding pressure 45–70 MPa. Warpage at the fan shroud gasket seat is minimised by balancing the gate layout and using post-mold fixtures for 60–120 s; published tensile creep data for long-term under-hood coolant exposure in this specific grade configuration is limited, so prolonged reservoir validation should be conducted per the OEM time-temperature schedule. Terminal finished article types include engine cooling fan shrouds, air deflectors, washer fluid reservoirs, hood latch bracket covers, and acoustic covers.
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Hifax M2 U13 C11306 designates a reactor-grade polypropylene copolymer compound comprising a heterophasic PP matrix modified with an ethylene-propylene elastomer and a finely dispersed mineral filler—nominally 13% by weight of surface-treated talc, as inferred from the U13 designation in LyondellBasell’s Hifax nomenclature. The C11306 suffix encodes a pre-blended black pigmentation and a multi-component stabilization package formulated for exterior durability. Melt volume-flow rate measured at 230°C under 2.16 kg falls in the range 15–20 cm³/10 min (ISO 1133-1:2022), the density is 0.97–0.98 g/cm³ (ISO 1183-1), and the product is supplied in pellet form, bagged or octabin-packed, with a standard moisture content below 0.05% when correctly stored in sealed containers. Primary application segments include injection-moulded automotive exterior trim such as bumper fascias, side sill mouldings, wheel arch extensions, and body-side claddings, where the balance of low linear thermal expansion, impact tolerance across a broad temperature span, and consistently attainable Class-A painted surfaces defines the performance envelope.
| Property | Typical Value | Test Method | Specimen / Conditioning |
|---|---|---|---|
| Tensile yield stress | 18–20 MPa | ISO 527-1,-2 | Type 1A, 50 mm/min, 23°C |
| Tensile elongation at yield | 5–7% | ISO 527-1,-2 | Type 1A, 50 mm/min, 23°C |
| Flexural modulus | 1200–1500 MPa | ISO 178 | 2 mm/min, 23°C, 64 mm span |
| Notched Izod impact strength, 23°C | >50 kJ/m² (partial break) | ISO 180/A | Type 1, notch A, 4 mm thickness |
| Notched Izod impact strength, -30°C | 6–8 kJ/m² | ISO 180/A | Type 1, notch A, 4 mm thickness |
| Vicat softening temperature, VST/B50 | 65–70°C | ISO 306 | 50°C/h, load 50 N |
| Heat deflection temperature, HDT/B | 90–100°C | ISO 75-2 | 0.45 MPa, flatwise, 4 mm specimen |
| Mould shrinkage (parallel / perpendicular) | 1.1–1.4% / 1.3–1.6% | ISO 294-4 | 150×150×2 mm plaque, 200°C melt, 40°C mould |
The values above are not specification limits; they represent statistically typical data obtained from injection-moulded specimens conditioned at 23°C and 50% RH for 48 h unless otherwise noted. The pronounced ductile behaviour at ambient temperature, coupled with a marked loss in impact strength below -20°C, reflects the glass transition of the dispersed elastomer phase. This transition governs the cold-impact performance ceiling, a key differentiator from grades containing higher ethylene-propylene rubber content such as Hifax M4 U13, where notched Izod at -30°C frequently exceeds 12 kJ/m² at the expense of flexural modulus, which drops to approximately 1000–1100 MPa.
The elastomer phase in M2 U13 is produced in-reactor by sequential copolymerisation, yielding ethylene-propylene rubber domains with an ethylene content tuned to approximately 45–55 wt%. This composition depresses the glass transition temperature of the rubber phase to near -50°C, enabling cavitation and shear yielding in the PP matrix well below freezing. Morphological stabilisation during pelletisation and subsequent melt processing relies on controlled viscosity ratio between the PP continuous phase and the dispersed rubber; the melt-flow rate of the matrix is designed to maintain a viscosity ratio in the range 0.8–1.2 at typical shear rates of 10²–10³ s⁻¹. Deviation from this ratio—such as through excessive peroxide vis-breaking during recycling—coarsens the rubber domains, sharply reducing low-temperature ductility and converting a ductile failure mode to a brittle, low-energy fracture at -20°C. Manufacturing plants monitoring compound integrity can detect morphology shifts early through a drop in the melt strength measured on a Göttfert Rheotens at 190°C, with typical values for virgin M2 U13 in the range 0.12–0.18 N.
Exterior trim applications such as bumper fascias routinely require direct painting with two-component polyurethane or basecoat-clearcoat systems without an adhesion primer. Hifax M2 U13 C11306 exhibits a surface energy exceeding 42 mN/m after short exposure to an air-plasma or flame-treatment unit operating with a controlled fuel-air ratio of approximately 9:1 and a treatment speed of 15–25 m/min. The concentration of oxygen-containing functional groups on the surface rises to a carbonyl index exceeding 0.4—as measured by attenuated total reflectance FTIR—within 0.2–0.5 seconds of treatment. Cross-hatch adhesion tests following Volkswagen TL 211 or Daimler DBL 5416 protocol consistently yield ratings of Gt 0 or Gt 1 when paint application takes place within 2 h of surface activation. A manufacturing constraint imposed by this activation dependence is the sensitivity of the treated surface to airborne siloxane contamination; distance from silicone-based mould-release application points must exceed 12 m to prevent recontamination and adhesion failure at the paint–substrate interface.
During high-volume injection moulding of automotive exterior parts with a target cycle time of 45–55 s, the melt viscosity stability of Hifax M2 U13 C11306 at shear rates exceeding 10³ s⁻¹ is critical for filling thin-wall rib sections and flow leaders without short-shot defects. At a melt temperature of 210–230°C and injection pressures of 60–80 MPa (measured at the nozzle on a 1500-tonne clamp force machine), the spiral flow length in a 2 mm channel typically reaches 480–520 mm. This fluidity originates from the controlled molecular weight distribution of the PP matrix and the lubricating effect of the fine talc platelets, which reduce apparent melt viscosity by 8–12% compared to an unfilled heterophasic copolymer of equivalent rubber content. Operators must nevertheless monitor residence time: at 250°C barrel temperature, thermal degradation of the ethylene-propylene rubber phase manifests as a surface blush on moulded parts after 12 min of cumulative residence time, as determined by a colourimeter ΔL* shift exceeding 2.5 units (CIE L*a*b*, D65 illuminant, 10° observer).
Shrinkage anisotropy in the moulded part is governed by both the mineral filler orientation and the elastomer domain morphology. The talc platelets align predominantly parallel to the flow direction, producing a shrinkage differential between flow and transverse directions as high as 0.3–0.5% on a 150 mm plaque. Measured mould shrinkage (ISO 294-4) at 24 h after demoulding is direction-dependent; further post-shrinkage of up to 0.15% occurs over the subsequent 48–72 h. Dimensional stabilisation is accelerated by post-mould annealing at 80–90°C for 30 min, a practice adopted by tier-one suppliers to ensure geometric compliance with GD&T flatness tolerances of 0.5 mm over 1 m of bumper fascia length.
The C11306 stabilization system comprises a hindered amine light stabilizer (HALS) and a benzotriazole-type UV absorber, blended into the compound at a total addition level of approximately 0.4–0.6 wt%, alongside a milled carbon black dispersion with a primary particle size of 20–30 nm. Xenon-arc accelerated weathering according to SAE J2412, conducted with a 0.55 W/m² irradiance at 340 nm, black panel temperature 70±2°C, and light/dark cycle of 102 min/18 min with water spray, demonstrates ΔE colour shift below 3.0 units after 2500 kJ/m² of radiant exposure. Simultaneously, the retention of tensile elongation at yield remains above 70% of the unexposed value, confirming resistance to photo-oxidative chain scission. For applications in regions with extreme UV indices—such as Saudi Arabia or Australia—the absence of titanium dioxide in the pigmentation package avoids photocatalytic degradation hotspots, a design distinction from certain white and light-coloured TPO grades where chalking has been observed after 4–5 years of direct exposure.
The grade does not exhibit sufficient chemical resistance to aggressive automotive fluids containing high aromatic content, such as certain DOT-class brake fluids, without a protective clearcoat or a secondary chemical barrier layer. Immersion tests in a standard DOT 4 fluid at 23°C for 72 h have been shown to reduce flexural modulus by 18–25% and induce pronounced swelling, with mass uptake exceeding 3.5%. This limitation is shared by most ethylene-propylene rubber-modified PP compounds, as the elastomer phase is susceptible to swelling by aromatic hydrocarbons, and it dictates that unpainted interior trim exposed to such fluids—on instrument panel cowl areas, for instance—must be moulded from a grade with an alternative elastomer chemistry or a higher crystallinity PP homopolymer cap layer.
| Property / Grade | M2 U13 C11306 | M4 U13 | M2 U10 |
|---|---|---|---|
| MFR, 230°C/2.16 kg (ISO 1133-1) | 15–20 g/10 min | 25–30 g/10 min | 13–17 g/10 min |
| Mineral filler content, nominal | 13 wt% | 13 wt% | 10 wt% |
| Flexural modulus (ISO 178) | 1200–1500 MPa | 1000–1100 MPa | 900–1100 MPa |
| Notched Izod, -30°C (ISO 180/A) | 6–8 kJ/m² | 12–16 kJ/m² | 5–7 kJ/m² |
| Typical part wall thickness range | 2.5–3.5 mm | 2.0–3.0 mm | 3.0–4.0 mm |
| Primary application | Bumper fascia, side cladding | Large fascia, integrated carriers | Interior trims, under-hood covers |
The M4 U13 variant, with its elevated melt flow, is preferred for large-shot components where flow length-to-thickness ratios exceed 200:1 and clamping forces above 2000 tonnes are available. The cost of this rheological advantage is a measurable reduction in flexural modulus, which must be compensated by rib design or glass-fibre overmoulding. M2 U10, containing a lower mineral loading, offers a softer tactile response and improved scrap recovery compatibility for non-visible substrates, but the reduced dimensional stability—shrinkage values exceeding 1.5% in both directions—can lead to warpage in large, flat panels unless extensive cooling channel optimisation is performed. M2 U13 C11306 sits in a performance corridor where stiffness, impact down to -20°C, and surface aesthetics converge for medium-sized Class-A painted exterior parts, provided the processing window is held within the limits described above.
The Hifax M2 U13 C11306 compound is classified as compliant with the End-of-Life Vehicle Directive 2000/53/EC and REACH Regulation EC 1907/2006, with no substances of very high concern (SVHC) above the 0.1% w/w threshold. Parts produced from this grade and tested in accordance with ISO 14021 contain a minimum 25% post-industrial recyclate by weight when routed through a closed-loop system, without excursion beyond the flexural modulus and impact variability limits defined in the part approval documentation.
