| HS Code | 583099 |
| Polymer Base | Polyamide 11 (PA11) |
| Color | White |
| Specific Gravity | 1.04 g/cm³ |
| Bulk Density | 0.55 g/cm³ |
| Mean Particle Size D50 | 25 µm |
| Melting Point | 186 °C |
| Glass Transition Temperature | 45 °C |
| Water Absorption Saturation | 1.2% |
| Tensile Strength | 44 MPa |
| Elongation At Break | 300% |
| Shore Hardness D | 70 |
| Dielectric Strength | 16 kV/mm |
As an accredited Arkema Rilsan Fine Powders ES WHITE 1464 EC PA11 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in 20 kg sealed polyethylene-lined paper bags; fine PA11 powder should be stored dry and protected from moisture. |
| Container Loading (20′ FCL) | 20′ FCL securely loads Arkema Rilsan Fine Powders ES WHITE 1464 EC PA11 in palletized drums, ensuring safe transport. |
| Shipping | Arkema Rilsan Fine Powders ES WHITE 1464 EC PA11 ships as a non-hazardous thermoplastic powder in sealed, moisture-proof bags or drums. Keep dry, away from heat and ignition sources. Use grounded equipment, avoid dust accumulation, and ensure proper labeling and documentation for safe transport and storage. |
| Storage | Store in original, unopened containers in a cool, dry, well-ventilated area away from heat, sparks, and open flames. Keep containers tightly sealed to prevent moisture absorption. Avoid exposure to direct sunlight and incompatible materials. Maintain temperatures below 25°C (77°F) and use within manufacturer’s recommended shelf life to preserve powder flow and performance. |
| Shelf Life | Shelf life is typically 2 years from manufacture when stored unopened in a cool, dry place away from sunlight. |
In potable water and industrial valve production, ductile iron bodies are prepared by grit blasting to Sa 2½ under ISO 8501-1, heated in a forced-air convection oven to 320–340 °C, and immersed into a fluidised bed of Rilsan Fine Powders ES WHITE 1464 EC PA11. The powder is used as supplied; no external curing agent, accelerator, or solvent is required because polyamide 11 is a thermoplastic that forms a continuous film by melt fusion and cooling. Immersion time is normally controlled between 2 s and 6 s, after which residual heat in the metal initiates flow-out and densification. The coating line then maintains a post-fusion temperature of 180–200 °C for 5–10 min to reduce trapped air at the interface. Dry film thickness measured by ISO 2178 typically falls between 250 µm and 450 µm on valve flanges and spool interiors. Heavier build requires a second dip cycle because a single pass above 500 µm can trap volatiles at the blast profile and form subsurface microporosity. The powder must be stored below 60 % RH and, if exposed to higher humidity, pre-dried at 80 °C for 4 h before charging the fluidised bed; otherwise steam nucleation during fusion creates pinholes that reduce dielectric resistance and permit ionic transport through the film. Saturated moisture uptake of polyamide 11 is approximately 1.8–2.0 wt% under ISO 62, which limits dimensional swelling relative to PA6 and PA66, but moisture still acts as a bubble-forming contaminant during high-speed dip coating. Plant qualification for potable-water contact requires verification against NSF/ANSI 61 for the specific applicator’s process; published certification data for this particular grade is limited and should be confirmed per part number before production release. Terminal components in this segment include flanged cast iron valves, couplings, strainer bodies, and pipe spools for municipal water distribution and wastewater chemical feed lines.
Zinc-phosphated spring steel clips are preheated to 200–230 °C and then coated by electrostatic spray using a corona gun operated at 60–80 kV with a delivery rate of 100–150 g/min. The phosphate layer is the adhesion-critical variable: coating weight must remain low enough to prevent cohesive failure within the phosphate crystal structure, while excess residual oil or phosphate sludge on the part surface causes localised delamination under flex. Direct application onto descaled but unphosphated spring steel gives inferior wet adhesion after cyclic salt exposure; therefore a zinc phosphate conversion layer with a closed-crystal morphology is specified before powder deposition. Film thickness is controlled between 120 µm and 250 µm using ISO 2178. Curing proceeds at 180–200 °C for 8–10 min; temperatures above 220 °C risk oxidation-induced yellowing of the white film and reduce impact toughness. Cross-cut adhesion under ISO 2409 is commonly specified as class 0 on rigid substrates, while reverse impact resistance under ASTM D2794 is used to detect embrittlement near the phosphate interface. The powder’s dry particle size distribution is critical for this geometry: coating-grade PA11 powders are typically classified to a D50 between 60 µm and 120 µm, and published D10/D90 data for this specific designation is limited, so each production lot must be screened under ISO 8130-1 before use. Fine material below 10 µm tends to deposit on sharp edges but may create low-density films that fail under clip compression. End products include brake line clips, fuel tank strap isolators, seat spring retainers, and anti-rattle clips for chassis harness routing; these parts require a low-friction PA11 surface to prevent abrasive wear against nylon tubing and to resist road salt splash.
Welded AISI 304 wire racks for dishwashers and cutlery baskets are degreased in alkaline immersion, rinsed, and then coated with Rilsan Fine Powders ES WHITE 1464 EC PA11 by cold electrostatic spray. In this configuration the metal is sprayed at ambient temperature, typically 20–25 °C, followed by oven cure at 200–220 °C for 8–12 min. The white film builds to 150–250 µm and must survive repeated exposure to alkaline detergent, rinse aid, and food soil at 60–75 °C. Because the part is a wire grid, the Faraday cage effect reduces deposition at internal wire intersections and weld junctions; production lines compensate by reducing powder output to 60–100 g/min and increasing gun-to-part distance to 200–300 mm. Adhesion testing on stainless wire usually follows ISO 2409, while dishwasher durability is assessed via mechanical dishwashing cycles under EN 12875-1 or a customer-specific test protocol. The relevant food-contact framework is 21 CFR 175.300 for resinous and polymeric coatings, together with 21 CFR 177.1500 for the base polyamide resin; final coating formulators must verify extraction limits for the finished film because pigment and process aids contribute to overall migration behaviour. PA11’s low moisture absorption reduces film softening and staining in standing hot water, but the applicator must avoid excessive film build above 300 µm on wire contact points because thick deposits can crack when the wire rack flexes during loading. Terminal products include dishwasher baskets, cutlery holders, refrigerator wire shelves, and oven-side wire trivets where intermittent food contact and hot detergent resistance are required.
Architectural lighting housings and decorative aluminium profiles are coated with a controlled blend of virgin PA11 powder and reclaim collected from cyclone overspray. Overspray from electrostatic spray lines can be sieved through a 125 µm screen and reincorporated, but the blend ratio is restricted to 20 wt% reclaim in virgin powder. Above this level, fine particle enrichment reduces dry flowability under ISO 8130-5 and broadens the effective particle size distribution, producing uneven film build on recessed features such as heat-sink grooves and lens channels. Because the material is thermoplastic, reclaim does not lose latent crosslinking activity, but it does carry microcrystalline contamination from conveyor chain wear, substrate dust, and airborne lint. These impurities act as pinning points during melt fusion and create surface defects after curing. The sintering window narrows as reclaim content rises: flow-out becomes sluggish at 190 °C and localised overheating above 220 °C produces gloss variation and yellowing of the white grade. Coating lines therefore monitor melt flow rate under ISO 1133-1 and check film appearance on aluminium panels with a 60° glossmeter under ISO 2813. Film thickness for architectural lighting is maintained between 100 µm and 200 µm to preserve heat-dissipation geometry while providing electrical insulation and protection against oxidation. Terminal components include outdoor bollard housings, recessed ceiling light bezels, and linear profile extrusions that require a clean white finish with resistance to moisture and atmospheric pollutants.
Off-road chassis fasteners and flanged hex-head bolts are coated by preheating the zinc-nickel plated steel hardware to 250–280 °C and dipping the heads into a fluidised bed of PA11 powder. The applied film is thinner than on valve bodies, typically 80–150 µm, because excessive build on the hex profile interferes with socket fit and torque transmission. Coating is applied selectively to the head and washer-bearing area; the threaded portion is masked to avoid dimensional interference. The zinc-nickel underlayer supplies sacrificial corrosion protection, while the PA11 top layer insulates the head from galvanic contact with aluminium brackets and prevents mud accumulation on exposed faces. Neutral salt spray testing under ISO 9227 or ASTM B117 is used for batch qualification, but published corrosion data for this specific powder grade is limited; applicators typically run comparative tests against uncoated fasteners to establish the improvement under road salt and alkaline clay slurry. Film defects such as pinholes at the hex corners are detected by low-voltage pinhole inspection using a conductive electrolyte and by destructively cross-sectioning sample fasteners. The powder’s white colour also provides a visual wear indicator: if the bright zinc-nickel substrate becomes visible after abrasion, torque-related slip or stone impingement has breached the coating. Terminal products include engine bay clamps, suspension link screws, battery tray fasteners, and earth-bonding bolt heads used in agricultural and construction equipment.
In laser sintering applications, polyamide 11 powders require a particle size span typically tuned to a D10 near 35–45 µm and a D90 near 100–120 µm, with strict morphology control to permit uniform powder recoating at layer thicknesses from 100 µm to 150 µm. Rilsan Fine Powders ES WHITE 1464 EC PA11 is classified for electrostatic coating, not powder bed fusion, and published data for this specific grade in laser sintering is limited. Coating-grade powders may contain a broader fine fraction and lower apparent density than sintering grades, which can produce recoater drag lines, inconsistent bed density, and part porosity if substituted directly. The absence of a dedicated anti-aging additive system for long thermal cycles means that extended exposure at build chamber temperatures near 170–180 °C can lead to molecular weight reduction and discoloration, but this must be verified on customer equipment rather than assumed from coating data. The relevant powder characterisation methods are ISO 8130-1 for particle size distribution and ISO 3923-1 for apparent density, both of which should be measured before any trial. For production of functional PA11 parts by powder bed fusion, a dedicated sintering grade should be selected, while this electrostatic coating powder is retained for metal coating lines where its particle size and melt rheology are matched to fluidised-bed and spray deposition.
| Method | Substrate preheat | Film thickness | Post-fusion/cure | Dominant process risk |
|---|---|---|---|---|
| Fluidised bed dip, cast iron valves | 320–340 °C | 250–450 µm | 180–200 °C, 5–10 min | Steam pinholes from damp powder |
| Electrostatic spray, cold wire goods | 20–25 °C | 150–250 µm | 200–220 °C, 8–12 min | Faraday cage edge loss |
| Electrostatic spray, phosphated clips | 200–230 °C | 120–250 µm | 180–200 °C, 8–10 min | Phosphate cohesive failure |
| Fluidised bed dip, fastener heads | 250–280 °C | 80–150 µm | Residual heat only | Hex corner pinholes |
| Segment | Standard or specification | Measured property |
|---|---|---|
| Potable water valves | NSF/ANSI 61 | Extraction for water contact |
| Potable water valves | ISO 8501-1, ISO 2178 | Blast cleanliness, film thickness |
| Automotive clips | ISO 2409, ASTM D2794 | Cross-cut adhesion, reverse impact |
| Dishwasher wire racks | 21 CFR 175.300, 21 CFR 177.1500 | Food-contact coating and resin status |
| Architectural lighting | ISO 8130-5, ISO 2813 | Powder flowability, gloss |
| Off-road fasteners | ISO 9227, ASTM B117 | Neutral salt spray resistance |
| Powder bed fusion screening | ISO 8130-1, ISO 3923-1 | Particle size distribution, apparent density |
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Arkema Rilsan Fine Powders ES White 1464 EC PA11 is a polyamide 11-based coating powder formulated for electrostatic spray deposition and fluidized-bed immersion on pretreated metallic substrates. The product designation groups three functional identifiers: the ES series indicates an electrostatically sprayable particle-size distribution and charge-control package, White 1464 identifies the titanium-dioxide-pigmented color shade, and EC denotes the specific formulation revision within the Rilsan fine-powder range. As a PA11 material, the fused coating exhibits a semi-crystalline polyamide structure with low moisture uptake relative to short-chain polyamides, high impact toughness at sub-zero temperatures, and resistance to abrasive wear. Manufacturer-published data for PA11 fine powders place the specific gravity, measured by ISO 1183-1, between 1.03 g/cm³ and 1.05 g/cm³; the white-pigmented grade is expected to sit toward the upper end of that range because of the density contribution of the inorganic pigment. The melting endotherm peak determined by ISO 11357-3 is commonly reported between 184 °C and 189 °C for PA11-based powder coating formulations. Incoming lots are typically controlled by ISO 8130-1 for particle-size distribution, with a median particle size in the 80–120 µm span depending on the specific certificate of analysis.
| Parameter | Test method | Typical value or range |
|---|---|---|
| Base resin | — | Polyamide 11, white pigmentation |
| Specific gravity | ISO 1183-1 | 1.03–1.05 g/cm³ |
| Melting endotherm peak | ISO 11357-3 | 184–189 °C |
| Median particle size | ISO 8130-1 | 80–120 µm |
| Water absorption, 24 h, 23 °C | ISO 62 | ≤0.5 % |
| Shore D hardness, fused film | ISO 868 | 70–75 |
| Elongation at break, fused film | ISO 527-3 | >200 % |
On production-scale electrostatic spray lines, the ES White 1464 EC powder is metered from a fluidized hopper into a corona or tribo gun. For corona charging, generator settings are typically held between 60 kV and 100 kV, with part grounding maintained below 106 Ω resistance to avoid back-ionization. The white titanium-dioxide pigmentation alters charge-decay behavior relative to carbon-black-filled grades; therefore, powder feed, gun current, and relative humidity require closer monitoring when ambient humidity exceeds 60 %. In fluidized-bed coating, the powder is aerated to an apparent bulk density near 0.45–0.55 g/cm³, and pretreated metal parts are preheated to 250–350 °C depending on thermal mass. Immersion time is usually 3–8 s, followed by a flow-out oven dwell at 220–240 °C for 3–6 min to complete fusion. Coating thicknesses below 150 µm are generally not recommended because pinhole density increases in fused PA11 films; single-pass thicknesses above 500 µm can create internal stress cracking at sharp edges. Carbon steel should receive a zinc phosphate or equivalent conversion coating before powder application, while aluminum parts require a chromate-free conversion layer to control interfacial oxide growth and prevent adhesion loss during thermal cycling.
Fluidized-bed coating lines processing the white grade sometimes accumulate fine particles below 20 µm in the cyclone and filter media, which shifts the bed particle-size distribution during multi-shift runs. The observed consequence is a gradual reduction in coating thickness at constant immersion time, often approaching 10–15 % after 8 h of continuous production when reclaimed powder is not blended with fresh material in a controlled ratio. The control method is to maintain a fluidizing-air dew point below −40 °C and to monitor bed density by differential-pressure transducers or periodic sampling. If bed density drifts below 0.40 g/cm³, powder charging becomes erratic and back-ionization defects appear on upper surfaces of coated parts. In corona spray systems, gun voltage and powder feed rate interact with particle-size distribution: a D50 shift from 90 µm to 110 µm can require either a 10–20 % reduction in powder feed or an increase in gun current to maintain the same dry-film thickness on a conveyorized line.
Because the grade is formulated for electrostatic application, powder resistivity and particle-size distribution are more critical than for general-purpose extrusion compounds. The charge-control additives in ES White 1464 EC are selected to maintain a volume resistivity in the range of 1010–1013 Ω·m under dry conditions, which supports adequate charging without excessive self-discharge. If the powder is stored open at relative humidity above 60 %, surface moisture uptake lowers powder resistivity, causing poor fluidization, gun spitting, and orange peel. Pre-drying in a desiccant hopper or forced-air oven at 80 °C for 4 h is advised before long production runs in humid environments. Incoming powder should be checked for residual moisture by ISO 15512 or an equivalent Karl Fischer method, with a target below 0.2 % by mass. Powder fuse-out should be verified by differential scanning calorimetry and gel time by ISO 8130-6 when switching between pigment batches, because titanium-dioxide surface treatments can shift gelation kinetics by several seconds.
The polymer is supplied as a ready-to-use fine powder and is not intended for dry blending with other thermoplastic coating powders. Differences in particle-size distribution and charge-control chemistry can produce segregation, variable gloss, and inconsistent film build when mixed with PA12 or PA6 powders. For tribo gun application, the white grade may require different gun tube materials than black grades because frictional charging is sensitive to pigment hardness and particle surface chemistry. For corona application, the electrostatic field should be verified against a clean, grounded test panel before production start-up; a field strength probe reading that differs by more than 10 % from the baseline indicates powder buildup on electrodes or incorrect gun-to-part distance.
Relative to an unpigmented PA11 fine powder, the white formulation adds rutile titanium dioxide for hiding power and ultraviolet screening. The pigmentation increases opacity and reduces UV-induced yellowing in outdoor service, but it also affects melt-flow behavior and gloss stability. Published data for unpigmented PA11 fine powders show fused-film elongation at break above 200 % according to ISO 527-3; the titanium-dioxide-loaded white grade may exhibit moderately lower elongation values depending on pigment dispersion quality and film thickness. The white grade is also more sensitive to over-baking because thermo-oxidative yellowing is visible earlier than in natural or black grades. Oven residence above 240 °C should be minimized, and temperature uniformity across the oven should be verified by profiling equipment to avoid localized over-cure. Compared with PA12 coating powders, PA11 has lower saturated water absorption, typically around 1.9 % after immersion according to ISO 62, which contributes to better retention of mechanical properties in wet service. PA11 also retains impact flexibility at temperatures near −40 °C when the film is fully fused and free of porosity.
Compared with Rilsan Fine Powders ES Natural and ES Black, the white grade may require a slightly higher minimum fusion temperature because the pigment increases melt viscosity. In practice, oven settings are sometimes raised by 5–10 °C to obtain the same flow-out and gloss level as the unpigmented grade. The white shade also exposes surface dirt and pretreatment residue more visibly than black, which is relevant for reject sorting but not a direct mechanical property difference. The product is not a structural adhesive and should not be used to fill gaps exceeding 200 µm in fabricated assemblies, because molten PA11 does not bridge large clearances under normal oven dwell. For thicker conformal coverage, multiple passes are preferred over a single heavy pass, because single-pass films above 500 µm are prone to mud-cracking and delamination on cooling.
In multi-coat systems, ES White 1464 EC is applied as a topcoat over a primer or as a single-coat corrosion barrier after suitable substrate preparation. For outdoor exposure, the titanium dioxide provides ultraviolet screening, but PA11 coatings may still undergo gloss reduction and chalking after prolonged weathering. Accelerated weathering by ISO 4892-2 or ASTM G155 should be used to establish lot-specific performance. Salt spray resistance after 1,000 h of ISO 9227 depends on film thickness, edge coverage, and pretreatment, and no universal claim applies without substrate-specific testing. When the coated article is intended for food-contact use, compliance with FDA 21 CFR 177.1500 and EU Regulation (EU) No 10/2011 must be verified by migration testing on the finished article, because the white pigment and processing aids are part of the overall migration assessment. For restricted-substance compliance, the grade avoids lead chromate and cadmium pigments, and the titanium dioxide used in Rilsan white grades is not subject to Annex II restrictions under Directive 2011/65/EU. The polyamide 11 backbone is derived from castor oil, but the white grade contains inorganic pigment and charge-control additives; therefore the overall bio-based carbon content of the as-supplied powder is lower than that of unpigmented PA11. Renewable carbon content, when required for procurement, should be measured on the final powder by ASTM D6866 or ISO 16620-2, because the inorganic components are not renewable.
Storage of the white fine powder should be in sealed containers at temperatures below 30 °C and relative humidity below 60 %. Opened containers should be consumed within 24 h in humid environments or conditioned before reuse. The grade is not recommended for long-term immersion in concentrated hydrochloric acid, sulfuric acid, or phenol-based cleaning agents, because polyamide 11 undergoes acid-catalyzed hydrolysis or swelling under such conditions. It should not be used as an electrical insulating barrier at operating temperatures above 150 °C in continuously wet service, because absorbed moisture reduces dielectric strength. When coating thin steel stampings, fused films should be inspected for edge coverage because electrostatic powder deposits preferentially on flat surfaces and may leave sharp edges thin. For parts with edge radii below 0.5 mm, far-edge corona or tribo gun adjustment is required. Dissimilar metal contact and galvanic corrosion remain substrate-level risks rather than coating-level corrections; the coating thickness must be sufficient to isolate the metal from electrolyte, and scribe testing per ISO 17872 may be used before qualified batch release. Published data for this specific white grade in unusual substrate combinations remains limited, so end-use validation should be conducted under the actual service environment rather than extrapolating from generic PA11 coating data.
