| HS Code | 750669 |
| Density | 1.04 g/cm³ |
| Melting Point | 168 °C |
| Vicat Softening Point | 100 °C |
| Water Absorption Over 24h | 1.2 % |
| Tensile Modulus | 600 MPa |
| Tensile Stress At Break | 35 MPa |
| Elongation At Break | 350 % |
| Flexural Modulus | 650 MPa |
| Charpy Notched Impact At 23 C | 15 kJ/m² |
| Shore D Hardness | 55 |
As an accredited Arkema Rilsamid AMNO P40 TLD PA12 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in 25 kg moisture-proof, polyethylene-lined bags, sealed to protect Arkema Rilsamid AMNO P40 TLD PA12 from humidity. |
| Container Loading (20′ FCL) | 20′ FCL: static-secured palletized PA12 resin bags, evenly distributed, ventilated container, protected from moisture and contamination. |
| Shipping | Rilsamid AMNO P40 TLD PA12 ships as solid polyamide 12 granules in sealed moisture-proof bags, boxes, or octabins. Keep dry, avoid direct sunlight, and store below 50°C. No dangerous goods classification applies. Protect packaging from damage and handle with standard industrial equipment to prevent contamination. |
| Storage | Store Arkema Rilsamid AMNO P40 TLD PA12 in its original, tightly sealed container in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and ignition sources. Keep container closed when not in use to prevent moisture absorption. Recommended storage temperature is below 25°C. Handle with care to avoid dust dispersion. Follow manufacturer’s guidelines for shelf life. |
| Shelf Life | Shelf life is typically 1 year when stored unopened in original packaging in a cool, dry place. |
In five-layer coextrusion of low-permeation fuel vapour return tubing for gasoline and alcohol-rich blends, the Rilsamid AMNO P40 TLD PA12 layer is combined with an ethylene vinyl alcohol barrier layer through maleic-anhydride-grafted polyolefin tie layers. For a 6 mm outside diameter tube with total wall thickness 1.5 mm, the inner PA12 layer is commonly specified at 0.4–0.6 mm, the EVOH barrier layer at 0.08–0.12 mm, and the outer PA12 layer at 0.7–0.9 mm. The inner PA12 layer resists fuel condensate attack and contributes burst resistance, while the EVOH layer reduces hydrocarbon permeation. Drying is performed in a desiccant hopper dryer with dew point not higher than -30°C and inlet air temperature 80°C for 4 h; residual moisture is confirmed by Karl Fischer coulometry below 0.10 wt%. Open hopper residence at 50% relative humidity should not exceed 2 h, because moisture regain above 0.12 wt% produces surface splay and variable die swell. The coextrusion line uses a five-layer spiral die, a vacuum sizing tank with first-chamber vacuum of -20 kPa, and a caterpillar puller with contact length of 900 mm. Melt temperature at the die entry is held between 230°C and 250°C; excursions above 260°C accelerate chain scission and increase gel accumulation at the die lip. Finished tube assemblies are evaluated under SAE J2260 for fuel system tubing construction and SAE J2044 for quick-connect coupling retention. Permeation testing is conducted with Fuel C and CE10 reference fluids. Terminal products include integrated EVOH/PA12 fuel vapour return lines for spark-ignition evaporative emission systems.
The limiting variable in high-speed air brake tube production is residual axial orientation introduced during vacuum sizing. A line producing 12 mm outside diameter by 1.5 mm wall PA12 tube at 60–80 m/min is typically run with melt temperature 235–255°C, first vacuum tank water temperature 20–35°C, and puller force below 220 N to prevent excessive drawing of the molten tube. Drying before extrusion is conducted at 80°C for 4–6 h to reach residual moisture below 0.10 wt%; moisture above 0.12 wt% produces discontinuous melt pressure and occasional surface bubbles. The preferred extruder is a single-screw machine with length/diameter ratio 24:1 to 30:1 and a barrier screw with compression ratio 2.5:1 to 3.0:1. Melt pressure before the breaker plate is maintained between 120 bar and 250 bar; cyclical fluctuation greater than ±5 bar indicates inconsistent feeding, screw wear, or partially gelled resin. After sizing, tube is conditioned at 23°C and 50% relative humidity for 24 h before cold impact testing at -40°C in accordance with SAE J844. Qualification includes burst pressure after 72 h at 100°C, boiling water immersion for 1 h, and cold impact at -40°C. Terminal products include heavy-duty truck brake lines, trailer air suspension tubing, and pneumatic control lines.
Where a multi-lumen braided catheter shaft is extruded in outer diameters of 1.0–2.7 mm, the PA12 phase is employed as the outer jacket over a wire braid and an inner PTFE liner. The extruder is typically a 20 mm single-flighted barrier screw with L/D 24:1, a melt pump, and a crosshead die with tip-to-die draw-down ratio of 1.05–1.15. Melt temperature at the die is restricted to 225–245°C to avoid char formation in the melt pump and die head. Drying to below 0.08 wt% moisture is completed in a vacuum dryer at 80°C for 4 h; the extrudate is cooled in a water trough at 18–30°C with minimal guide contact to preserve lumen concentricity. Biocompatibility evaluation follows ISO 10993-1, with cytotoxicity screened per ISO 10993-5 and haemocompatibility assessed per ISO 10993-4 when blood contact is indicated. North American lot qualification commonly requires USP Class VI biological reactivity testing. Finished catheter shafts are tested for leakage under 300 kPa internal pressure and for tensile force at 100 mm/min extension. Multi-lumen line scrap rates are sensitive to melt temperature variation exceeding ±5°C, which creates non-uniform wall thickness and lumen collapse. Terminal products include diagnostic cardiovascular catheters, steerable introducer shafts, and stiff proximal segments for neurovascular delivery devices.
In unbonded flexible pipe construction, the PA12 pressure sheath is extruded over a stainless steel interlocked carcass with outer diameters typically from 150 mm to 400 mm and wall thickness between 4 mm and 12 mm. The polymer layer must seal produced fluids, and any gel particle above 0.2 mm becomes a rapid gas decompression failure site when pressure is cycled. The extrusion line therefore includes continuous melt filtration through a 200 µm screen changer located between the gear pump and the crosshead die. Drying is conducted at 80°C for 6–8 h to below 0.08 wt% moisture, with dry-air conveying from the dryer to the hopper; moisture above 0.10 wt% causes viscosity loss and surface roughness on thick sections. Melt temperature at the die is maintained between 220°C and 240°C, and screw speed is adjusted to produce a uniform output without surging. A single-screw extruder with L/D 30:1 and a vented barrel is used for high-throughput lines, with barrel temperatures staged from 180°C at the feed throat to 235°C at the adapter. The cooling trough is staged from 50°C at entry to 20°C at exit to control crystallinity and minimise residual stress. Qualification is performed under API 17J and ISO 13628-2, including rapid gas decompression testing per NORSOK M-710 or equivalent operator specification. Continuous service temperature for PA12 pressure sheaths is limited to 70°C in hydrocarbon service; published data for this specific grade in sour service with H₂S partial pressure above 0.1 bar is limited, and qualification must include sour fluid ageing. Terminal products include dynamic risers, static flowlines, and jumper spools.
| Application segment | Standard or test method | Qualification parameter |
|---|---|---|
| Automotive multilayer fuel vapour tubing | SAE J2260, SAE J2044 | Permeation, coupling retention, thermal ageing |
| Heavy-duty air brake tube | SAE J844, ISO 7628 | Cold impact at -40°C, burst after heat ageing |
| Medical catheter shafts | ISO 10993-1, ISO 10993-5, ISO 10993-4, USP Class VI | Cytotoxicity, haemocompatibility, leakage |
| Unbonded flexible pipe pressure sheath | API 17J, ISO 13628-2, NORSOK M-710 | Rapid gas decompression, sour ageing, long-term creep |
| Tight buffer optical fibre | IEC 60794-1-2 | Dimensional stability, shrinkage, attenuation changes |
| Injection moulded electrical connectors | IEC 60112, IEC 62631-3-1, UL 94 | Tracking resistance, insulation resistance, flammability |
| Monofilament | ISO 527-1 | Tensile strength at draw ratio, elongation |
Polyamide 12 tight buffer is applied over 250 µm primary-coated optical fibre to obtain a 900 µm outer diameter using a 30 mm single-screw extruder with L/D 24:1 and a gear pump. The line speed is typically 150–400 m/min. Melt temperature is maintained at 230–250°C, and melt pump inlet pressure is held between 80 bar and 150 bar; pressure fluctuation must remain below ±2 bar, because larger variation directly affects outer diameter tolerance and fibre microbending loss. Drying is completed at 80°C for 4 h to below 0.08 wt% moisture. The extrudate passes through a water-filled trough at 20–35°C before diameter measurement and open-loop tension control. Post-extrusion shrinkage is measured on a 1 m sample conditioned at 23°C for 24 h; specified values are verified against IEC 60794-1-2 test methods. Terminal products include tight buffered optical fibre for indoor and outdoor cable constructions, microduct cables, and fibre-to-the-premises distribution assemblies.
In injection moulded sensor housings and cable ties produced in 8- and 16-cavity hot-runner tools, the PA12 melt is processed at 235–255°C with a mould temperature of 50–70°C. Pre-drying is conducted at 80°C for 4 h to below 0.10 wt% moisture; failure to maintain this limit produces splay on flat sealing surfaces and intermittent short shots in thin sections of cable ties. Holding pressure is set between 50 MPa and 80 MPa, and total cycle time for a 6 g connector housing is typically 25–40 s depending on wall thickness and hot-runner balance. Moisture uptake measured under ISO 62 is lower for PA12 than for PA6, which assists snap-fit retention force stability in underhood environments; long-term creep testing is conducted under ISO 899-1 at 23°C and 1000 h. Electrical safety evaluation includes insulation resistance per IEC 62631-3-1 and comparative tracking index per IEC 60112; flammability classification is typically HB per UL 94 when the grade is unfilled and unreinforced. Terminal products include battery management sensor housings, cable ties, speed sensor connectors, and pneumatic push-to-connect fittings.
In monofilament lines producing PA12 bristle and reinforcement filament, residual moisture must be held below 0.10 wt% before the melt enters the spinneret. Drying is conducted at 80°C for 4 h in a closed-loop desiccant dryer; moisture above 0.13 wt% causes measurable viscosity loss, bubble defects, and filament breakage under draw. The extruder is typically a 45 mm single screw with L/D 30:1, a melt pump, and a multiple-hole spinneret with hole diameter between 1.0 mm and 2.5 mm. Melt temperature at the die is maintained between 230°C and 250°C. The extruded filaments are quenched in a water bath at 30–60°C, then drawn in a heated oven at 100–140°C with a draw ratio of 3.5:1 to 4.5:1. A second relaxation stage applies 5–10% relaxation at 100–120°C to control post-process shrinkage. Final monofilament diameter is typically 0.15–0.80 mm. Tensile properties are measured according to ISO 527-1 at a gauge length of 250 mm and test speed of 200 mm/min. Terminal products include spiral hose reinforcement filament, industrial brush bristles, cable strength members, and woven filtration belts.
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Arkema Rilsamid AMNO P40 TLD is a plasticized polyamide 12 (PA12) extrusion-grade resin supplied by Arkema. The product designation combines the Rilsamid AMNO polyamide 12 base, a P40 plasticizer modification, and the TLD extrusion-controlled viscosity designation. Under ISO 1043-1, the material is categorized as PA12-P, where P denotes a plasticized grade. The base polymer is obtained from ω-aminododecanoic acid or laurolactam, producing a molecular backbone with a twelve-carbon repeat unit and a lower amide group density than PA6 or PA66. That structural difference reduces equilibrium moisture uptake and improves dimensional stability in humid environments. The plasticizer modification lowers flexural modulus and increases elongation at break, while the TLD designation marks the grade as a controlled-viscosity variant for extrusion processes producing small-diameter tubing, jacketing, and profiles.
Typical application fields for AMNO P40 TLD include pneumatic tubing, automotive vacuum and vapor lines, industrial fluid handling, cable sheathing, and coiled air-brake tubing. The selection of a plasticized PA12 grade rather than an unplasticized PA12 or PA11 is generally driven by requirements for low-temperature impact, cyclic flexural fatigue resistance, kink resistance, and controlled dimensional response in wet service. In these applications, processors evaluate the material against SAE J844, OEM pneumatic line specifications, or internal flexural fatigue protocols. The plasticized grade is specified when the component must withstand repetitive bending without kinking or cracking; an unplasticized PA12 would provide similar chemical exposure resistance but with higher flexural modulus, lower elongation at break, and reduced tolerance to strain during installation and service.
Because polyamide 12 has a longer methylene sequence than PA6 or PA66, moisture adsorption is lower and mechanical property changes under ambient humidity are less pronounced. ISO 62 saturated water absorption values for PA12 typically fall between 1.1 wt% and 1.6 wt%, compared with 6.5 wt% to 9.5 wt% for PA6 and PA66 at saturation. This lower uptake reduces the dimensional swing between dry-as-molded and conditioned service states. The plasticizer package in AMNO P40 TLD further modifies the mechanical response by increasing chain mobility and reducing stiffness, which improves low-temperature ductility and flexural fatigue resistance.
The plasticizer modification lowers the material’s ISO 178 flexural modulus into a class-typical band of 600 MPa to 900 MPa, compared with 1300 MPa to 1600 MPa for unplasticized PA12 extrusion grades. ISO 527-2 tensile stress at yield is similarly reduced; published class-typical values fall between 25 MPa and 35 MPa, while tensile elongation at break generally exceeds 250%. The resulting increase in ductility is accompanied by a Shore D hardness of 55 to 70 under ISO 868, whereas unplasticized PA12 typically falls in the 70 to 78 range. These are broad design envelopes; the Arkema technical datasheet for AMNO P40 TLD controls for release-based specification, and published data for this specific configuration is limited where proprietary formulation details are involved.
Compared with PA11, PA12 exhibits a lower amide concentration and marginally lower water absorption. ISO 62 saturation values for PA11 range from 1.6 wt% to 1.9 wt%, while PA12 saturation values range from 1.1 wt% to 1.6 wt%. The melting peak under ISO 11357-3 is approximately 168 °C to 178 °C for PA12 and 185 °C to 190 °C for PA11. This lower melting point does not directly reduce continuous service temperature; ISO 2578 long-term thermal aging indices for stabilized PA12 typically position it for intermittent service at 150 °C and continuous service at 80 °C to 120 °C, depending on antioxidant package, oxygen exposure, and mechanical load. In wet service, PA12 retains a higher proportion of its dry flexural modulus than PA6 or PA66, but the plasticized grade must be evaluated under the actual moisture condition because absorbed water plasticizes the matrix further.
| Property | Test method | Typical range |
|---|---|---|
| Density | ISO 1183-1 | 1.01–1.03 g/cm³ |
| Flexural modulus | ISO 178 | 600–900 MPa |
| Tensile stress at yield | ISO 527-2 | 25–35 MPa |
| Tensile elongation at break | ISO 527-2 | > 250% |
| Shore D hardness | ISO 868 | 55–70 |
| Melting peak temperature | ISO 11357-3 | 168–178 °C |
| Water absorption at saturation | ISO 62 | 1.1–1.6 wt% |
The ranges above are class-typical for a plasticized PA12 extrusion resin and are not lot-specific guarantees. The Arkema technical datasheet for AMNO P40 TLD is the controlling specification, and values may vary with pigment or additive modifications. The property envelope is nevertheless useful for comparing material families: plasticized PA12 occupies a lower-modulus, higher-elongation position than unplasticized PA12, while retaining lower water absorption than PA11 or short-chain aliphatic polyamides.
During single-screw extrusion of thin-wall tubing, the resin requires predrying. Because polyamide 12 undergoes hydrolytic degradation at melt temperature, moisture content above 0.1 wt% can cause viscosity loss, bubble formation, and surface defects. Desiccant drying at 80 °C for 4 h to 8 h to a dew point of −30 °C or drier is specified by equipment manufacturers. Hopper residence time should keep dried granules under a closed dry-air blanket; open air exposure beyond 30 min at relative humidity above 60% may require re-drying before extrusion.
Barrel temperature profiles for 24:1 to 30:1 single-screw extruders are typically set from 200 °C to 240 °C across zones, with die temperatures between 210 °C and 240 °C. Screw compression ratio of 2.5:1 to 3.5:1 and controlled shear improve melt homogeneity without degrading the plasticizer. Melt pressure at the breaker plate usually stays below 180 bar; pressures above this threshold may indicate screen pack plugging or insufficient melt temperature. 60/80 mesh screen packs are used to remove gel particles from the melt stream. Downstream, vacuum sizing at 20 °C to 40 °C controls outer diameter and ovality. Line speeds for 8 mm outside diameter tube may range from 20 m/min to 120 m/min depending on extruder throughput, die design, and cooling length; exact line speed must be established on the production line because published data for this specific configuration is limited.
Water absorption influences mechanical and electrical performance in PA12 parts. A 1.0 wt% increase in moisture content can reduce the glass transition temperature, increase impact toughness, and decrease tensile stress at yield by approximately 10% to 20%. Dimensional change in humid service remains lower than for PA6 or PA66; class-typical linear expansion at saturation is 0.5% to 1.0%. Components intended for wet environments should be designed with this range in mind, particularly when close-tolerance tubing connectors or press-fit geometries are involved.
Rilsamid AMNO P40 TLD exhibits resistance to aliphatic hydrocarbons, diesel fuel, greases, and neutral salt solutions. It is not recommended for prolonged exposure to strong mineral acids, phenols, or boiling water above 90 °C. Zinc chloride stress cracking resistance is a design variable in automotive applications; compared with PA6 and PA66, PA12 is less susceptible to chloride-induced environmental stress cracking under the test conditions of ISO 22088 or internal automotive protocols. However, plasticizer extraction can occur when P40 tubing is immersed in hot aggressive fuels or glycol mixtures. Compatibility testing under the specific fluid, temperature, and strain should be conducted before specification; compositional resistance cannot be inferred from PA12 base properties alone.
Pneumatic and air-brake lines produced from PA12 are frequently tested under SAE J844 or OEM-specific specifications. The plasticized P40 variant is selected where kink resistance, low-temperature impact, and cyclic flexural fatigue are primary requirements. ISO 179 Charpy notched impact values for PA12 at −40 °C typically remain above 8 kJ/m²; plasticized grades can exceed 15 kJ/m². The specific value for AMNO P40 TLD should be confirmed against the supplier technical datasheet, as published data for this specific configuration is limited.
In coiled air-brake tubing, repeated pressurization from 0 bar to 8 bar or 10 bar at 23 °C and −40 °C requires resistance to fatigue and stress cracking. PA12 has lower modulus and lower water absorption than PA6, which reduces dimensional distortion and maintains burst pressure margins in wet environments. The P40 plasticizer improves flexibility and reduces the minimum bend radius before kinking; however, it also lowers compressive hoop stiffness compared with unplasticized PA12. For applications requiring high collapse resistance, an unplasticized grade such as Rilsamid AMNO may be evaluated instead.
| Standard / regulation | Scope | Relevant property or condition |
|---|---|---|
| REACH Regulation (EC) No 1907/2006 | EU chemical registration | SVHC declaration status per supplier safety datasheet |
| RoHS Directive 2011/65/EU | Restricted substances | Pb, Hg, Cd, Cr6+, PBB, PBDE content |
| ISO 1043-1 | Plastics symbols | PA12-P designation |
| ISO 1133-1 | Melt flow rate | Melt volume-flow rate at 235 °C / 2.16 kg |
| ISO 527-2 | Tensile | Stress-at-yield and elongation at break |
| ISO 178 | Flexural | Flexural modulus |
| SAE J844 | Air brake tubing | Nylon tube construction, burst pressure, environmental conditioning |
Thermal processing stability in AMNO P40 TLD is influenced by the plasticizer and antioxidant package. Prolonged hold-up time above 240 °C should be avoided because plasticizer volatilization and oxidative degradation increase apparent viscosity and reduce impact properties. Purging with low-MFR polyethylene or a commercial purging compound is used between color changes and before shutdown. The resin should not be combined with amine-based additives or incompatible flame retardants unless specific compatibility data are available, because reactions with polyamide end groups can shift melt viscosity and reduce ductility.
For injection molding of thicker-wall fittings from this material, barrel temperatures of 220 °C to 260 °C and mold temperatures of 40 °C to 80 °C are typical from general PA12 processing guides. However, the TLD designation is optimized for extrusion, and mold filling behavior should be verified using ISO 1133-1 melt volume-flow rate data from the supplier technical datasheet before tooling is finalized. Drying remains mandatory at 0.1 wt% moisture or below. Material processed outside the stated moisture, melt temperature, or residence time boundaries is likely to show surface roughness, reduced burst pressure, or variable dimensional stability; deviations require requalification before production release.
