| HS Code | 227376 |
| Product Name | Arkema Rilsan Fine Powders 6170 PURPLE RDP 15-10 ES PA11 |
| Chemical Nature | Polyamide 11 (PA11) |
| Color | Purple |
| Physical Form | Fine powder |
| Particle Size D50 | 15 micrometers |
| Bulk Density | 0.45 g/cm³ |
| Specific Gravity | 1.04 |
| Melting Point | 186 °C |
| Glass Transition Temperature | 45 °C |
| Moisture Content | <0.5% |
| Water Absorption 24h | 0.3% |
| Tensile Strength | 55 MPa |
| Elongation At Break | 300% |
| Shore D Hardness | 72 |
| Chemical Resistance | Resistant to most solvents, dilute acids, and alkalis |
| Uv Resistance | Good |
As an accredited Arkema Rilsan Fine Powders 6170 PURPLE RDP 15-10 ES PA11 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in 25 kg sealed bags, this purple Rilsan PA11 fine powder ensures safe handling, storage, and consistent application. |
| Container Loading (20′ FCL) | 20' FCL container loading of Arkema Rilsan Fine Powders 6170 PURPLE RDP 15-10 ES PA11, securely packed for transport. |
| Shipping | Ship Arkema Rilsan Fine Powders 6170 PURPLE in sealed, moisture-proof, original packaging to prevent contamination and clumping. Keep dry, cool, and away from static, sparks, or ignition sources. Ensure proper labeling and ventilation. Generally non-dangerous goods, but follow the Safety Data Sheet and local transport regulations. Handle with care to preserve powder integrity. |
| Storage | Store in a cool, dry, well-ventilated area away from heat, sparks, open flames, and direct sunlight. Keep the original container tightly closed to prevent moisture absorption. Avoid contact with strong oxidizers. Maintain moderate temperatures and stable conditions to preserve powder flow properties. Keep out of reach of unauthorized personnel. |
| Shelf Life | Shelf life is typically 2 years from manufacture date when stored unopened, cool, dry, and away from direct sunlight. |
In dishwasher basket manufacturing, the conversion of cold-drawn steel wire into rack components demands a coating that withstands cyclic exposure to highly alkaline detergent liquors at pH 11–13, chloride-bearing rinse aids, and mechanical abrasion from ceramic and stainless tableware. Arkema Rilsan Fine Powders 6170 PURPLE RDP 15-10 ES PA11 is applied as a one-component, 100% solids thermoplastic powder; no solvent, water, or curative is introduced at the converter. The formula addition ratio is therefore 100 parts powder to 0 parts external additive in food-adjacent rack applications, because post-added dry-flow agents and charge-control additives may become extractable species under food-equipment migration testing. If ambient humidity exceeds 60% RH, the powder is pre-dried in a dehumidified hopper at 55–65°C for 4–6 h, and fluidization air is dried to a dew point below -20°C to prevent agglomeration in the porous polyethylene membrane of the fluid bed. Downstream production begins with alkaline degreasing at 60–70°C, hot-water rinse, phosphoric acid pickle, second rinse, and forced-air drying, followed by abrasive blast to Sa 2½ per ISO 8501-1 on heavy-gauge wire or mechanical descaling on bright wire. The cleaned racks are preheated in a forced-air oven to a metal temperature of 280–340°C; light-gauge wire takes the lower end to avoid distortion, while cast or collared junction points take the upper end. Preheated parts are immersed in the fluidized bed for 3–8 s, with fluidizing air pressure held at 0.3–0.7 bar depending on bed level, and excess non-sintered powder is removed by vibration to avoid wire-intersection bridging. Post-fusion is carried out at 190–210°C for 2–5 min to complete interparticle coalescence, after which water quenching is used on thin wire goods to limit thermal distortion. Achieved film thickness is typically 300–600 μm, measured by ISO 2178; rack aperture closure becomes a processing failure above 800 μm. Adhesion is verified by cross-cut tape test to ISO 2409 class 0–1, and corrosion resistance is evaluated under neutral salt spray per ISO 9227 for at least 1,000 h with no red rust and under-creep below 2 mm on scribed panels. Regulatory compliance for food equipment is validated against 21 CFR 177.1500 for the PA11 base resin; where the component enters the food zone, converter-specific finished-article testing under NSF/ANSI 51 and EU 10/2011 is required. End products include dishwasher cutlery baskets, upper and lower rack assemblies, wire shelving, commercial glasswasher baskets, and bottle-holding racks in institutional kitchens.
Exterior steel components such as park benches, bicycle racks, bus shelter frames, guardrails, and light-pole access doors are frequently hot-dip galvanized prior to powder coating, but zinc-oxide formation and entrapped moisture from the galvanizing bath produce early pinhole and delamination defects when the preheat sequence is neglected. Arkema Rilsan Fine Powders 6170 PURPLE RDP 15-10 ES PA11 functions in this sector as a 100% solids thermoplastic topcoat; the formula addition ratio is 100 parts powder to 0.2–0.4 wt% hydrophobic fumed silica when the converter requires dry-flow improvement for electrostatic spray fluidization. No solvent, no curing agent, and no additional pigment are required because the grade is predispersed purple. The substrate is first galvanized to ISO 1461, then sweep-blasted with fine alumina or garnet at 0.5–1.5 bar to remove zinc oxide without stripping the galvanizing; blast profile must be shallow enough to avoid exposing underlying zinc-iron alloy. After sweep blast, the parts are outgassed at 180°C for 20–30 min in a gas-fired convection oven to drive moisture from the galvanized layer. Electrostatic powder coating is performed with corona guns at 60–80 kV, powder feed 40–60 g/min, gun-to-part distance 150–250 mm, and part grounding below 1 MΩ. The metal surface temperature at powder application is controlled at 220–250°C so that the powder melts and flows on contact, followed by post-fusion at 200–210°C for 2–4 min. Film thickness is maintained at 250–350 μm, measured by ISO 2178, with thickness below 200 μm reducing impact robustness on edges and thickness above 400 μm producing minor orange peel and edge runoff. Mechanical acceptance is anchored to ISO 6272-2 falling-weight impact, ISO 2409 cross-cut adhesion class 0–1, ISO 9227 neutral salt spray for 1,000 h with under-creep below 2 mm, and ISO 4892-2 accelerated weathering for UV stability evaluation. For exterior service above atmospheric corrosivity C3 per ISO 12944-2, published data for this specific purple RDP 15-10 ES grade under 5-year Florida exposure is limited; where low colour fade is contractual, a UV-stabilized PA11 variant or an aliphatic polyurethane topcoat should be specified. End products include outdoor furniture, bicycle parking racks, handrail systems, bus shelter frames, streetlight access covers, and perimeter fencing hardware.
The edge-coverage failure mode on rectangular copper busbars is driven by the electrostatic Faraday effect: low air velocity and high voltage deposit powder on flat surfaces while starved corners and punched-hole edges remain below dielectric thickness. Arkema Rilsan Fine Powders 6170 PURPLE RDP 15-10 ES PA11 is applied as a 100% solids PA11 insulation coating for high-current conductors in electric vehicle battery packs and power distribution units; the formula addition ratio is 100 parts powder to 0.3–0.5 wt% corona charge-control additive when plant humidity or powder aging reduces charge uptake. Over-additivation above 0.8 wt% causes dry-spray and back ionization, visible as micro-craters and reduced edge build. Copper and aluminium busbar surfaces are degreased, acid-pickled, and rinsed; where long-term adhesion on bare copper is inconsistent due to oxide regeneration, a 20–40 μm solvent-free epoxy primer is applied and cured before PA11 deposition. The electrostatic process uses corona guns at 50–70 kV, gun distance 150–250 mm, atomizing air held at 1.0–1.5 bar, and powder feed 30–50 g/min per gun. Preheated part temperature is controlled at 200–240°C; lower temperatures produce insufficient film coalescence, while higher temperatures cause primer degradation and powder scorch on thin copper tabs. Flat conductor film thickness is built to 300–500 μm, while the minimum accepted coating thickness on punched-hole edges and radiused corners is 150 μm, measured by ISO 2178 with magnetic or eddy-current instrumentation. The film must withstand thermal shock cycling from -40°C to 125°C for 30 cycles per IEC 60068-2-14 without cracking or delamination; dielectric strength is tested at 20–25 kV/mm minimum per IEC 60243-1, and adhesion after thermal aging is verified to ISO 2409 class 0–1. Creepage and clearance coordination is evaluated under IEC 60664-1, while flammability classification of the finished insulating film is component-specific under UL 94, typically reported as V-2 at 3.0 mm thickness depending on substrate and primer. Regulatory compliance is handled through RoHS 2011/65/EU and REACH EC 1907/2006. End products include high-current busbars, cell interconnection plates, terminal insulating caps, power distribution bars, and busbar cover sleeves in automotive battery packs.
| Parameter | Test method | Industrial acceptance window |
|---|---|---|
| Dry film thickness | ISO 2178 | 300–500 μm flat conductor; ≥150 μm edge radius |
| Dielectric strength | IEC 60243-1 | 20–25 kV/mm minimum at 250 μm film thickness |
| Adhesion | ISO 2409 | Class 0–1 before and after thermal aging |
| Thermal shock resistance | IEC 60068-2-14 | -40°C to 125°C, 30 cycles, no crack or delamination |
| Flammability | UL 94 | V-2 at 3.0 mm thickness on representative substrate |
For offshore topside and marine atmospheric service, the coating on handrails, cable tray covers, grating clips, and junction-box shells must tolerate salt fog, frequent wetting, ultraviolet exposure, and repeated mechanical impact from dropped tools without cracking at low temperature. Arkema Rilsan Fine Powders 6170 PURPLE RDP 15-10 ES PA11 is used as a 100% solids PA11 powder topcoat in a two-coat system over a thin epoxy primer; the formula addition ratio is 100 parts PA11 powder to 0.2 wt% dry-flow additive when fluidized-bed application is used, with no solvent, no curing agent, and no post-blend pigment. The steel substrate is blast-cleaned to Sa 2½ per ISO 8501-1 with a surface profile of 50–85 μm, followed by application of a 40–60 μm epoxy primer to seal the blast profile and provide a uniform adhesion layer. The primed steel is preheated to 260–340°C, depending on section mass, then dipped in a fluidized bed or coated by electrostatic spray to build a topcoat of 400–600 μm. Post-fusion is performed at 200–210°C for 3–5 min, after which the parts are cooled to ambient without water quench when dimensional stability permits. Coating performance is qualified under NORSOK M-501 atmospheric exposure protocols and ISO 12944-9:2020 for offshore structures, with neutral salt spray resistance verified by ISO 9227 for 1,000 h and adhesion by ISO 2409 class 0–1. Published data for this specific purple RDP 15-10 ES grade under complete NORSOK M-501 system certification is limited; converter qualification of the full primer-topcoat assembly on the project substrate is therefore required before deployment. End products include offshore handrails, ladder rungs, grating clips, cable tray covers, valve extension stems, and junction-box shells in topside atmospheric service.
Fitness equipment frames present a specific mechanical requirement: dropped Olympic plates and dumbbells impose high localized impact energy that cracks thin thermoset epoxy films, while over-thick thermoplastic films reduce dimensional fit in telescoping tube assemblies. Arkema Rilsan Fine Powders 6170 PURPLE RDP 15-10 ES PA11 is applied at a formula addition ratio of 100 parts powder to 0 parts external additive; the predispersed purple pigmentation eliminates post-blend pigment dispersion risk. Steel tube is laser-cut, MIG-welded, and passed through a phosphate or zirconium pretreatment tunnel at 3–5 bar spray pressure for coating adhesion; preheat is controlled at 210–230°C before electrostatic spray or small-part fluidized-bed dipping. Powder film thickness is built to 300–500 μm, measured by ISO 2178, because below 250 μm impact toughness on welded corners declines, while above 500 μm no measurable improvement in drop-impact resistance is observed in converter-side impact trials. Post-fusion is performed at 190–210°C for 2–4 min, followed by forced-air cooling. Conformity is evaluated under EN 957-2:2019 for stationary fitness equipment safety, with coating mechanicals tested by ISO 6272-2 falling-weight impact and ISO 1519 cylindrical bend; RoHS compliance is maintained under 2011/65/EU. End products include squat rack frames, dumbbell racks, cable machine shrouds, bumper-plate storage posts, and institutional exercise equipment frame members.
Carbon steel valve bodies, flanges, and pump casings in chemical process plants frequently require an internal lining that prevents substrate contact with aqueous acids, salts, and process solvents without the brittleness of glass-flake or phenolic linings. Arkema Rilsan Fine Powders 6170 PURPLE RDP 15-10 ES PA11 is applied as a 100% solids PA11 topcoat over a solvent-free epoxy primer; the formula addition ratio is 100 parts PA11 powder to 0 parts external additive, while the primer is mixed at 2:1 base-to-hardener by volume and applied at 40–80 μm dry film thickness. Cast surfaces are first heated in a gas-fired burn-off oven at 350°C to remove impregnated oil and organic contamination, then blast-cleaned to Sa 2½ per ISO 8501-1 with a 50–75 μm profile. Sharp edges are radiused to 2–3 mm before priming, because thinner edge profiles produce pinholes in the PA11 layer during thermal contraction. The primed parts are preheated to 250–300°C and immersed in a fluidized bed or coated by electrostatic spray to build a lining thickness of 300–500 μm, followed by post-fusion at 190–210°C for 3–5 min. A high-voltage pinhole test at 8–10 kV is used to detect defects before service. Chemical resistance is evaluated by immersion testing per ISO 2812-1 and ASTM G20; corrosion resistance is verified by ISO 9227 neutral salt spray for 1,000 h, and adhesion by ISO 2409 class 0–1. The coating is suitable for ambient-temperature contact with dilute sulfuric acid up to 10% concentration, but continuous immersion in concentrated acetic acid above 10% at 50°C or in hot methanol should be avoided, and published data for this specific purple RDP 15-10 ES formulation under those aggressive media is limited. End products include valve bodies, pump casings, flanges, instrument housings, strainer baskets, and process fluid manifold sections.
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Arkema Rilsan Fine Powders 6170 PURPLE RDP 15-10 ES PA11 is supplied as a pigmented polyamide 11 powder for electrostatic spray and fluidised-bed deposition. The base resin is classified as PA11 under ISO 1874-1. Published polymer-class data report a specific gravity of 1.04 under ISO 1183-1 and a crystalline melting peak near 186 °C under ISO 11357-3. The RDP 15-10 ES suffix denotes a fine particle-size cut and electrostatic-spray orientation; the 15-10 sequence is a supplier-specific descriptor and must be checked against the Arkema certificate of analysis for D10, D50, and D90 because it is not an ISO size designation. Purple pigmentation does not modify the amide repeat chemistry but can shift dielectric constant, volume resistivity, and hiding power relative to natural or black PA11 powder.
Relative to PA12, the PA11 repeat contains one fewer methylene unit between amide groups; relative to PA6, the PA11 repeat contains a substantially longer aliphatic sequence. That structure places the material above PA12 in melting temperature and below PA6 in equilibrium moisture uptake. Table 1 lists the property envelope commonly reported for unfilled PA11 and PA12 coating resins; it is not a substitute for lot-specific data on the pigmented purple powder. The addition of purple colorant can increase specific gravity by 0.01–0.03 g/cm³ and can alter melting enthalpy because the pigment participates as a nucleating or diluting phase depending on its surface treatment and volume fraction.
| Property | PA11 coating class | PA12 coating class | Test method |
|---|---|---|---|
| Specific gravity | 1.03–1.05 | 1.01–1.03 | ISO 1183-1 |
| Melting temperature | 185–190 °C | 175–180 °C | ISO 11357-3 |
| Equilibrium water absorption at 23 °C in water | 1.8–2.0 % | 1.3–1.6 % | ISO 62 |
| Tensile modulus | 1.2–1.5 GPa | 1.3–1.6 GPa | ISO 527-2 |
| Nominal elongation at break | >200 % | >200 % | ISO 527-2 |
| Shore durometer D | 65–70 | 65–72 | ISO 868 |
The practical conversion issue is that a lowering of melting point from 186 °C to 178 °C may appear modest, but the fluidised-bed preheat window above the melt and below oxidative or sag conditions closes by approximately 8 °C when moving from PA11 to PA12. Conversely, replacing PA6 with this grade removes the high equilibrium water absorption of 9.0–9.8 % under ISO 62 and reduces the coating’s tendency to plasticise in humid service. These differences are material-class properties; published data for this exact purple PA11 grade is limited.
Moisture at the powder surface and within the granule controls electrostatic transport. When residual moisture exceeds 0.2 % by ISO 15512 Method B, the powder bridges in venturi pumps, and charge decays before deposition, lowering transfer efficiency. Pre-drying at 80 °C for 4 h in a desiccant dryer with a supply-air dew point of −30 °C or lower, a bed depth of 25 mm or less, and a final powder temperature of 35 °C or lower before loading is typical handling practice for fine PA11 powders. Stock stored at relative humidity above 60 % must be re-dried before use. Vacuum drying at 60–70 °C for 6 h is an alternative when a desiccant dryer is unavailable. Direct heated air above 90 °C must be avoided because the fine fraction can sinter into agglomerates that then block the 125 µm sieve used before the hopper.
Corona application of RDP 15-10 ES is typically run at 40–80 kV with electrode current of 10–30 µA and powder flow of 50–200 g/min through a venturi nozzle. Triboelectric guns may be used where Faraday penetration is required; with triboelectric charging, charge-to-mass ratio must be monitored because the purple pigment can alter the work function of the powder surface and shift the charge level relative to natural PA11. Powder resistivity below 1010 Ω·cm leads to self-discharge and weak adhesion on the grounded part; resistivity above 1013 Ω·cm promotes back-ionisation and rough surface texture in the deposited film. The fine fraction below 10 µm increases moisture sensitivity and reduces fluidisation in the hopper. Typical practice for fine PA11 is to maintain 20–30 wt% virgin material in the reclaim stream, but the exact ratio for the 15-10 ES cut should be established by particle-size monitoring using laser diffraction under ISO 13320-1.
Fluidising air should be dried to a dew point of −30 °C or lower and regulated to 0.5–1.0 bar at the hopper inlet. A high-voltage field of 40–80 kV should be checked with a kV meter at the electrode, because gun-display voltage and actual potential can differ by 5–10 kV in production booths. Ground continuity of the workpiece must be maintained below 1 Ω to prevent charge accumulation and back-corona. For incoming quality control, particle-size distribution is determined by laser diffraction under ISO 13320-1. The D10, D50, and D90 values on the supplier CofA are not interchangeable with sieving results; a 125 µm sieve may pass agglomerates that would not be detected by laser diffraction unless dispersion is dry. A median-size shift of 5 µm toward fines can reduce transfer efficiency by more than 15 % in a corona booth due to increased air drag and lower charge per particle.
In fluidised-bed operation, steel parts are preheated to 280–350 °C as measured by a contact thermocouple at the thinnest section, then immersed for 2–10 s. Thickness is governed by substrate heat capacity: a 5 mm steel plate may deposit 300–400 µm, while a 20 mm plate may produce 150–250 µm under the same preheat and dip time. Cure is completed by residual heat. Thin sections below 3 mm may require a subsequent cure at 220–230 °C for 10 min to stabilise crystallinity. Parts should be rotated immediately after withdrawal to prevent lower-edge sagging. The powder cloud must be fluidised with dry compressed air at a dew point of −30 °C or lower; an air pressure of 0.5–1.0 bar is typical, with bed height controlled to avoid channelling.
Purple colour development is evaluated by spectrophotometry against a product-specific master standard; gloss and haze are measured under ISO 2813. A film thickness of 150–250 µm is often sufficient for opacity over blasted steel, but the required thickness must be determined by measuring L*a*b* values and contrast ratio. The pigment system may exhibit colour shift after sustained ultraviolet exposure; for exterior architectural use, weatherability should be assessed under ISO 16474-3 or ASTM G154 because unpigmented PA11 is naturally translucent and does not provide the same UV screening as the pigmented layer.
This PA11 product does not crosslink during bake; it melts, flows, and crystallises. Film thickness cannot be estimated from gel time because gelation does not occur. Abrasion resistance develops after crystallisation; handling before the substrate cools below the recrystallisation temperature of approximately 160 °C can create surface marking. Taber abrasion testing under ASTM D4060 with CS-17 wheels and a 1000 g load typically reports 10–20 mg/1000 cycles for this class of PA11 coating; published data for the purple variant is limited.
Corrosion testing on steel is commonly performed under ASTM B117 neutral salt spray. A defect-free 300–400 µm PA11 film over a surface prepared to ISO 8501-1 Sa 2.5 typically withstands 1000 h with less than 2 mm scribe creep. For underside automotive use, stone-chip resistance may be evaluated under ISO 20567-1; PA11 coatings of this class generally retain ductility at −40 °C, but the specific purple grade must be qualified on the intended substrate and film thickness because published data for this exact composition is limited.
Continuous air exposure at 100 °C initiates progressive oxidative embrittlement in unmodified PA11. The time to measurable loss of elongation under ISO 527-2 depends on antioxidant package, film thickness, and air exchange rate around the component. Short excursions to 140 °C during bake, post-mould assembly, or heat staking are generally tolerated if the residence time is limited. Low-temperature flexibility is commonly assessed by ASTM D2794 reverse impact or ISO 6272-1 indentation after conditioning at −40 °C. Published data for this exact purple grade is limited, so qualification at both the upper and lower service limits should be part of the purchasing specification.
Steel components are degreased in an alkaline cleaner at 60–70 °C, rinsed to pH 7, and blast-cleaned to Sa 2.5 under ISO 8501-1 with a surface profile of 40–75 µm. Adhesion of PA11 is primarily mechanical; a phosphate conversion coating is not required unless a parallel corrosion specification demands it. Pull-off adhesion under ISO 4624 typically exceeds 15 MPa on this coating class, with cohesive failure inside the PA11 film rather than at the metal–polymer interface. Adhesive failure is usually caused by condensed moisture, blast-profile contamination, or substrate outgassing. The purple grade should not be applied over zinc-rich primers without compatibility validation because zinc carboxylate formation can weaken the polymer–primer interface.
In exposure to aliphatic hydrocarbons, diesel, biodiesel blends, alkaline media, and neutral salt solutions, PA11 coatings of this class are specified for corrosion protection and mechanical durability. Strong acids, phenols, formic acid, cresols, and concentrated calcium or zinc chloride solutions at elevated temperature cause swelling or dissolution. The purple pigment may restrict food-contact and potable-water use; the bare PA11 chemistry is referenced under FDA 21 CFR 177.1500 and EU Regulation 10/2011, but the pigmented formulation requires separate compliance confirmation. Surface resistivity and electrostatic dissipation of the coating should be measured under IEC 62631-3-1 or ASTM D257 if the component enters an ATEX zone or functions as electrical insulation. REACH status for the polymer and additives should be confirmed with the supplier for the specific grade.
