| HS Code | 154334 |
| Product | LyondellBasell Icorene 9005 NAT Polyamide 12 |
| Density | 1.01 g/cm³ |
| Melt Flow Rate | 5 g/10 min at 235°C, 2.16 kg |
| Tensile Strength At Yield | 42 MPa |
| Elongation At Break | 250% |
| Flexural Modulus | 1300 MPa |
| Charpy Notched Impact Strength | 9 kJ/m² |
| Melting Point | 178 °C |
| Vicat Softening Temperature | 150 °C |
| Heat Deflection Temperature At 1 8 Mpa | 50 °C |
| Water Absorption After 24h | 0.2% |
| Electrical Resistivity | 1e12 Ω·m |
As an accredited LyondellBasell Icorene 9005 NAT Polyamide 12 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | LyondellBasell Icorene 9005 NAT Polyamide 12 is supplied as natural pellets in sealed 25 kg polyethylene-lined paper bags. |
| Container Loading (20′ FCL) | Load 20′ FCL with LyondellBasell Icorene 9005 NAT Polyamide 12, securing palletized bags to prevent shifting and moisture damage. |
| Shipping | LyondellBasell Icorene 9005 NAT Polyamide 12 ships as non-hazardous resin pellets in sealed moisture-protective bags or octabins. Use dry containers or covered trucks, keep away from moisture and direct heat, and handle with standard equipment to avoid contamination or dust. Ensure secure palletization. |
| Storage | Store Icorene 9005 NAT Polyamide 12 in its original, sealed packaging in a cool, dry, well-ventilated area. Avoid direct sunlight, heat sources, and open flames. Keep containers tightly closed to prevent moisture absorption, which can degrade the resin. Maintain moderate temperatures and protect from mechanical damage. Properly stored, the material retains its specified properties until use. |
| Shelf Life | Shelf life is typically indefinite when stored in original, unopened packaging away from moisture, heat, and direct sunlight. |
In multi-layer coextrusion lines producing permeation-resistant fuel vapor return tubing for spark-ignition vehicles, LyondellBasell Icorene 9005 NAT Polyamide 12 is processed as the inner fluid-contact layer. The formulation is compounded with 0.3–1.0 wt% heat stabilizer masterbatch, 0.1–0.3 wt% acid scavenger, and 0.2–0.5 wt% carbon-black concentrate; the balance 98.2–99.4 wt% Icorene 9005 NAT maintains the required low total volatile organic permeation and zinc chloride resistance. Compliance under SAE J2260 for nonmetallic fuel system tubing requires granule conditioning at 80°C for 4–6 h to reach moisture content below 0.08% before entering the extruder. The coextrusion line typically uses a multi-layer spiral mandrel die, extruder screw L/D ratio 24:1–30:1, barrel zone temperatures 220°C–250°C, and melt residence time under 10 min to suppress thermo-oxidative chain scission. Die temperature variation is held within ±5°C because inner-layer wall thickness drift beyond ±0.05 mm alters permeation and burst resistance. Downstream, the tube passes through vacuum calibration at 40–60°C, ultrasonic wall-thickness inspection, and a post-extrusion annealing zone at 80–100°C to relax residual melt stress. Terminal products include EVAP canister purge lines, fuel tank vent tubes, and fuel filler neck vapor return hoses.
When a truck trailer air brake circuit requires a semi-rigid tube that remains dimensionally stable from -40°C to 80°C, LyondellBasell Icorene 9005 NAT Polyamide 12 is let down at 96.0–98.5 wt% with 1.0–3.0 wt% plasticizer masterbatch and 0.3–0.8 wt% heat stabilizer. The addition ratio is controlled because plasticizer loadings above 3.0 wt% reduce burst strength and shorten fitting retention life under SAE J844 and ISO 7628:2010 air brake tubing test protocols. Extrusion is performed on a single-screw extruder with screw diameter 20–45 mm, L/D ratio 24:1–30:1, and melt temperatures 230–250°C. The tube is sized in a vacuum tank at 40–60°C and conditioned at 80°C for 4 h to stabilize moisture-driven expansion. Terminal products include service brake lines, trailer air suspension lines, and auxiliary air circuits where zinc chloride or road salt exposure prohibits PA6 substitution.
The pressure sheath of an unbonded flexible pipe is not a conventional extrudate; the PA12 melt must be drawn over a circular steel carcass while maintaining wall-thickness tolerance of ±10% across the circumference. In this configuration, LyondellBasell Icorene 9005 NAT Polyamide 12 is compounded with 2–5 wt% plasticizer masterbatch, 0.5–1.5 wt% heat stabilizer, and 0.05–0.2 wt% nucleating agent; the balance 93.0–97.5 wt% base resin controls hydrolysis resistance and low-temperature impact. Compliance is anchored to API Spec 17J and ISO 13628-2:2006 for unbonded flexible pipe systems, with long-term hydrostatic testing performed at service temperatures up to 60°C and design pressures exceeding 10,000 psi for high-pressure risers. The extrusion line uses a 90–150 mm single-screw extruder with L/D ratio 30:1–33:1, static mixer, and melt pump to suppress pressure oscillation. Barrel zones are set 240–265°C, melt pressure is held between 25–40 MPa, and screw speed is capped to keep residence time below 12 min. Water spray and air cooling bring the sheath surface to 20–40°C before the pipe enters the winding unit, while ultrasonic and laser diameter gauges record thickness and ovality at intervals of 0.5 m. Terminal products include subsea flowlines, risers, and jumper spools where PA12 provides lower water absorption than PA11 alternatives in these high-humidity annular environments.
| Downstream segment | Icorene 9005 NAT loading (wt%) | Functional additive loading (wt%) | Critical boundary |
|---|---|---|---|
| Automotive fuel vapor inner layer | 98.2–99.4 | heat stabilizer 0.3–1.0; acid scavenger 0.1–0.3; carbon black 0.2–0.5 | moisture below 0.08%; die variation ±5°C |
| Offshore flexible pipe pressure sheath | 93.0–97.5 | plasticizer 2–5; heat stabilizer 0.5–1.5; nucleator 0.05–0.2 | melt 240–265°C; wall thickness ±10% |
| Air brake tubing | 96.0–98.5 | plasticizer 1–3; heat stabilizer 0.3–0.8 | service range -40°C to 80°C |
| Powder coating wire goods | 97.85–99.45 | fumed silica 0.05–0.15; pigment 0.5–2.0 | fumed silica above 0.2 wt% reduces transfer efficiency |
| Pneumatic control tubing | 98.0–99.0 | antioxidant masterbatch 0.5–1.0; carbon black 0.2–0.5 | outside diameter tolerance ±0.05 mm |
| Monofilament for industrial mesh | 99.0–99.7 | lubricant 0.1–0.3; heat stabilizer 0.5–1.0 | first-stage draw 3.0:1–3.8:1 |
Electrostatic powder coating of steel wire goods with Polyamide 12 uses the controlled charge decay of natural powder through corona guns or tribocharging. LyondellBasell Icorene 9005 NAT is dry-blended with 0.05–0.15 wt% fumed silica flow additive and 0.5–2.0 wt% inorganic pigment masterbatch; the base powder remains 97.85–99.45 wt%. Excess fumed silica above 0.2 wt% increases dry-powder resistivity and reduces first-pass transfer efficiency on complex wire intersections. For food-contact use, the applied coating is evaluated under FDA 21 CFR 175.300 for resinous and polymeric coatings, with extraction testing performed in 10% ethanol and 3% acetic acid simulants. The substrate is preheated to 300–350°C, dipped into the fluidized bed for 3–8 s, and post-cured at 180–200°C for 2–5 min to complete fusion and levelling. Amine-functional adhesion promoters are avoided because they induce surface yellowing and reduce melt flow during cure. Terminal products include dishwasher baskets, wire shelving, retail display racks, and medical instrument trays where the PA12 layer provides edge coverage and impact resistance.
For automated assembly cells requiring black pigmented pneumatic tubing with outside diameter tolerances of ±0.05 mm, LyondellBasell Icorene 9005 NAT Polyamide 12 is compounded at 98.0–99.0 wt% with 0.5–1.0 wt% antioxidant masterbatch and 0.2–0.5 wt% carbon-black concentrate. The line uses a 30 mm single-screw extruder with melt pump, vacuum sizer at 40–60°C, and laser gauge feedback to cap dimensional drift. Fittings are qualified to ISO 14743:2004 for pneumatic connectors; tube burst and flexibility are verified under ISO 7628:2010 conditions where applicable. Terminal products include industrial air lines, robotic cell tubing, and food-processing pneumatic circuits.
Monofilament extrusion for paper-machine clothing and industrial mesh requires controlled melt viscosity in the 250–350 Pa·s range. LyondellBasell Icorene 9005 NAT Polyamide 12 is let down at 99.0–99.7 wt% with 0.1–0.3 wt% external lubricant and 0.5–1.0 wt% heat stabilizer. The melt is spun through a heated die into a cold-water quench at 20–30°C, followed by first-stage draw at 3.0:1–3.8:1 in a water bath at 80–95°C and a second-stage draw at 1.05:1–1.15:1 at 120–140°C. Tensile properties of drawn monofilament are verified under ISO 527-2:2012; published data for this exact grade in monofilament orientation is limited, so draw ratio and anneal conditions are established through pilot trials. Terminal products include industrial dryer fabrics, filter belts, and conveyor mesh where abrasion resistance and dimensional stability are required.
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LyondellBasell Icorene 9005 NAT Polyamide 12 is supplied as a natural-color, unmodified polyamide 12 powder grade within the Icorene portfolio. The designation 9005 identifies a medium-viscosity nylon 12 with an additive package intended for general thermoplastic processing and powder coating. The product is specified by its melt viscosity, moisture uptake, thermal transitions, and mechanical response. Published data for this specific configuration is limited; therefore, the values in this document represent typical unmodified natural PA12 data measured under the listed ISO or ASTM methods, and the reader should verify against the supplier certificate of analysis.
The material is supplied as a powder with particulate morphology suitable for both melt compounding and coating. Incoming moisture content should be measured by Karl Fischer titration according to ISO 15512. If the powder is exposed to relative humidity above 60%, equilibrium surface moisture can exceed 0.10%, which is the maximum recommended residual moisture for melt processing.
The property envelope of Icorene 9005 NAT is defined by the thermal and mechanical response characteristic of unmodified PA12. Melt viscosity, crystallinity, and moisture-dependent stiffness are the controlling variables for processability and end-use performance. The following values are representative for unmodified natural PA12 grades unless a grade-specific certificate of analysis indicates otherwise.
| Property | Test method | Representative unmodified PA12 range | Unit |
|---|---|---|---|
| Density | ISO 1183-1 | 1.01–1.03 | g/cm³ |
| Melting temperature, DSC second heat | ISO 11357-3 | 172–178 | °C |
| Tensile modulus | ISO 527-1/-2 | 1300–1600 | MPa |
| Yield stress | ISO 527-1/-2 | 35–45 | MPa |
| Nominal strain at break | ISO 527-1/-2 | >200 | % |
| Charpy notched impact at -30 °C | ISO 179-1/1eA | 5–8 | kJ/m² |
| Water absorption equilibrium at 23 °C, 50% RH | ISO 62 | 0.7–0.8 | % |
| Water absorption saturation in water at 23 °C | ISO 62 | 1.4–1.6 | % |
| Melt volume-flow rate at 235 °C, 2.16 kg | ISO 1133-1 | 5–15 | cm³/10 min |
Thermal analysis under ISO 11357-3 shows a melting endotherm between 172 °C and 178 °C. The glass transition temperature of dry PA12 is approximately 40–50 °C; absorbed water plasticizes the amorphous phase and can lower the observed Tg. Crystallization temperature on cooling is typically 140–150 °C. These transitions govern annealing and cooling conditions in extrusion and molding. Parts cooled too rapidly from the melt produce lower crystallinity and reduced chemical resistance; slow cooling increases crystallinity and dimensional stability but may extend cycle time.
Capillary rheometry of unmodified PA12 at 230 °C shows shear-thinning behavior with apparent viscosity decreasing from approximately 200–400 Pa·s at 100 s⁻¹ to 50–100 Pa·s at 1000 s⁻¹. These values are representative for medium-viscosity PA12 and must not be used for mold-filling simulation without grade-specific data. The melt strength is sufficient for profile extrusion and fluidized-bed film coalescence but lower than branched or chain-extended PA12 grades. Melt fracture onset in capillary dies is typically observed at shear rates above 10³–10⁴ s⁻¹, depending on die geometry and melt temperature.
Processing of Icorene 9005 NAT on twin-screw compounding lines uses barrel set points from 210 °C to 240 °C and screw L/D ratios of 32:1 to 44:1. The polymer is dried in desiccant hoppers with air dew point -30 °C at 80 °C for 4–6 h. Failure to maintain residual moisture below 0.10% results in hydrolysis-induced viscosity loss, gas splay, and brittle weld lines. Production-scale single-screw extrusion has shown that back pressure above 25 bar elevates melt temperature into the oxidative yellowing range above 250 °C; back pressure is therefore maintained between 5 bar and 15 bar. In injection molding, mold temperature is set between 40 °C and 60 °C, and screw recovery speed is limited to avoid shear heating above 260 °C.
Powder coating with Icorene 9005 NAT is performed by fluidized bed or electrostatic spray. Fluidized-bed operations benefit from a median particle size between 60 µm and 120 µm as determined by laser diffraction under ISO 13320. Particle size below 40 µm increases dusting and uneven bed expansion; particles above 150 µm can produce orange peel and pinholes. Electrostatic application requires controlled powder resistivity, typically 10¹⁰–10¹³ Ω·m, and compressed air at dew point -40 °C. Metal parts are heated to 230–250 °C for 5–10 min to fuse the polymer. The upper limit is 280 °C; above this threshold oxidative degradation becomes visible as yellowing and surface defects. Film build is influenced by immersion time and substrate thermal mass, and line trials on automated fluidized-bed lines show that substrate temperature variation greater than ±10 °C across a part can generate film thickness differences exceeding 25%.
Icorene 9005 NAT may be evaluated for selective laser sintering or multi-jet fusion if the particle size distribution and powder flow satisfy machine-specific requirements. The powder bed temperature in PA12 laser sintering is typically maintained at 170–175 °C, just below the melt onset. Parts built from unmodified PA12 show tensile properties under ISO 527-2 that are lower than injection-molded parts because of residual porosity. Published data for 9005 NAT in powder bed fusion is limited.
Selection of PA12 over PA6 or PA66 is driven by water absorption and dimensional change in humid service. The equilibrium moisture uptake of PA12 at 23 °C and 50% RH is 0.7–0.8%, whereas PA6 and PA66 typically absorb 2.5–3.0% under the same conditions. This lower moisture uptake reduces hygroscopic swelling and hydrolysis rates in wet environments, but PA12 also has a lower tensile modulus and a melting temperature approximately 40–50 °C lower than PA6 and PA66. Compared with PA11, PA12 shows comparable low-temperature impact and slightly lower equilibrium moisture uptake; the practical choice between PA11 and Icorene 9005 NAT often depends on melt viscosity, stabilization package, and supply chain qualification. Unlike impact-modified PA12 grades, Icorene 9005 NAT is unmodified and exhibits higher stiffness retention at elevated temperature but lower notched impact at subzero conditions.
| Material | Melting temperature | Water absorption equilibrium 23 °C/50% RH | Density |
|---|---|---|---|
| PA12 Icorene 9005 NAT | 172–178 °C | 0.7–0.8% | 1.01–1.03 g/cm³ |
| PA11 typical | 185–190 °C | 1.0–1.2% | 1.03–1.05 g/cm³ |
| PA6 typical | 220–225 °C | 2.5–3.0% | 1.12–1.14 g/cm³ |
| PA66 typical | 260–265 °C | 2.5–3.1% | 1.13–1.15 g/cm³ |
Icorene 9005 NAT is used in tubing, cable jacketing, pneumatic connectors, and coated metal components where hydrolysis resistance in contact with oils, greases, and zinc chloride road salt is specified. The grade’s resistance to aliphatic hydrocarbons and automotive fluids is evaluated under ISO 175 by measuring tensile retention after immersion. In fuel-contact applications, PA12 is known for low permeation but must be validated against the specific oxygenated fuel blend. Continuous service temperature is typically limited to 80–100 °C in air, while short-term excursions to 150 °C require inert atmosphere or reduced service life. Parts with wall thickness below 1 mm may require annealing at 120 °C for 1–2 h to stabilize crystallinity and dimensional tolerances. Incompatibilities include prolonged contact with strong mineral acids, phenol, and oxidizing agents at elevated temperatures because these accelerate chain scission; halogenated solvents can promote environmental stress cracking.
Water absorption values measured under ISO 62 are time-dependent. At 23 °C and 50% RH, the equilibrium value of 0.7–0.8% is reached after several weeks in thin sections; saturation in liquid water reaches 1.4–1.6%. This absorbed water acts as a plasticizer and reduces tensile modulus by approximately 10–20% relative to the dry-as-molded state when measured according to ISO 527-1/-2. For wet service, conditioned mechanical values should be used rather than dry datasheet values.
The NAT designation indicates natural color without carbon black or pigment. Black PA12 grades may contain carbon black at 0.5–2.0%, which modifies surface resistivity and UV stability but can alter melt viscosity. Natural-grade material is preferred when color neutrality or translucency is required, but it lacks the UV stabilization of carbon-black-filled grades. Outdoor exposure of natural unmodified PA12 can lead to surface chalking and embrittlement; UV-stabilized or pigmented versions should be selected for direct weathering.
Within the Icorene PA12 range, the numerical suffix does not define a linear viscosity scale; grades are differentiated by melt volume-flow rate under ISO 1133-1, additive stabilization, and particle size distribution. Natural-grade 9005 NAT is selected where medium melt viscosity balances flow length and melt strength in both extrusion and coating. High-flow grades allow thin-wall injection molding but reduce melt strength in blown film; lower-flow grades improve melt strength but may generate die drool and require higher barrel temperatures. The specific grade-to-grade shift in MVR should be verified from the supplier certificate of analysis before tooling is finalized.
Regulatory positioning for Icorene 9005 NAT should be confirmed against the latest supplier safety data sheet and product stewardship documentation. Under the EU REACH Regulation EC No 1907/2006, polyamide 12 polymers are exempt from registration as polymers while imported monomers and additives may require registration. RoHS compliance is assessed under Directive 2011/65/EU and Delegated Directive (EU) 2015/863; lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE concentrations are typically below 0.1% by weight in homogeneous material, with cadmium below 0.01%. For food-contact use, compliance must be demonstrated under 21 CFR 177.1500 or equivalent regional migration testing; Icorene 9005 NAT is not supplied with an unconditional food-contact statement.
Packaging for Icorene 9005 NAT is typically moisture-barrier-lined bags or octabins. Shelf life is specified as 12 months from certification date when stored indoors at 15–30 °C in sealed original packaging. Storage outside this range, particularly above 30 °C or in direct sunlight, may accelerate oxidative aging of additives and shift melt viscosity. Opened containers should be re-sealed under dry nitrogen or desiccant. On production-scale lines, a recurring failure mode is moisture re-uptake in partially consumed containers. Polyamide 12 powder that is left open at 23 °C and 50% RH can reabsorb surface moisture within 2–4 h, increasing melt instability. If powder exceeds 0.10% moisture, it must be re-dried rather than processed at lower barrel temperatures because viscosity reduction is not fully reversible.
