| HS Code | 160091 |
| Material | Polyamide 11 (Nylon 11) |
| Color | Colorized (pre-colored variant) |
| Particle Size D50 | 50 µm |
| Bulk Density | 0.45 g/cm³ |
| Density | 1.01 g/cm³ |
| Melting Point | 180 °C |
| Tensile Strength | 45 MPa |
| Elongation At Break | 25 % |
| Tensile Modulus | 1600 MPa |
| Charpy Impact Strength | 12 kJ/m² |
| Shore Hardness | D75 |
| Water Absorption | 1.5 % |
As an accredited Suzhou Hipro Polymers Hiprolon 11 PES Colorized Nylon powder factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in sealed 20 kg polyethylene bags, keeping the colorized nylon powder dry and contamination-free for optimal performance. |
| Container Loading (20′ FCL) | 20′ FCL container loading of Suzhou Hipro Polymers Hiprolon 11 PES Colorized Nylon powder, packed in sealed bags, palletized, and securely stowed. |
| Shipping | Ship as non-hazardous nylon powder in sealed, anti-static packaging to prevent moisture absorption and static buildup. Keep dry, away from heat, sparks, and open flames. Use grounded equipment. No special transport restrictions; standard ground or air freight is acceptable. Include MSDS and proper product labeling with the Suzhou Hipro Polymers trade name. |
| Storage | Store Hiprolon 11 PES Colorized Nylon powder in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed to prevent moisture absorption and contamination. Avoid contact with strong oxidizers. Maintain stable temperatures, ideally below 40°C, and use within the manufacturer’s recommended shelf life to preserve powder flow and color properties. |
| Shelf Life | Shelf life is typically 2 years from manufacture when stored unopened in a cool, dry place. |
Electrostatic spray deposition of Hiprolon 11 PES Colorized Nylon powder from Suzhou Hipro Polymers onto steel dishwasher baskets is governed by charge-to-particle-size ratio and substrate heat capacity. The powder is applied as supplied; sieving through a 150 µm mesh is performed before charging. Quality control requires a D90 below 150 µm by ISO 13320; if D90 exceeds this limit, the powder is re-sieved before loading. Corona gun voltage is maintained at 60 kV to 85 kV with electrode current 10 µA to 25 µA and gun-to-substrate distance 150 mm to 250 mm. Steel basket preheating is set between 230°C and 260°C. Residual heat completes film formation in 5 min to 8 min. Dry film thickness is controlled between 250 µm and 400 µm for cutlery-contact surfaces. If reclaimed powder is dry-blended with virgin material, the virgin-to-reclaim ratio should not exceed 70:30 by weight for food-contact articles. Compliance is documented under FDA 21 CFR 175.300 when the final film is submitted for food-contact evaluation; pigment migration limits must be confirmed for the specific color concentrate. Mechanical acceptance tests include ASTM D2794 direct and reverse impact at 80 in-lb minimum, ASTM D3359 method B crosshatch adhesion at 4B minimum, and ASTM D4060 Taber abrasion loss below 20 mg per 1000 cycles with a CS-17 wheel at 1000 g load. The powder should not be processed above 260°C substrate temperature when low-carbon steel baskets carry electrogalvanized zinc layers, because zinc-iron diffusion can produce adhesion failure. Storage below 25°C and 60% relative humidity is required; if storage humidity exceeds 65% RH, the powder is pre-dried at 70°C to 80°C for 2 h to 3 h in a desiccant dryer with dew point no higher than -20°C. Terminal articles are dishwasher baskets, cutlery racks, and kitchen drying racks.
In laser powder bed fusion, Hiprolon 11 PES Colorized Nylon powder is deposited at a layer thickness of 0.1 mm. Build chamber temperature is typically held between 168°C and 175°C. A CO₂ laser is operated at 25 W to 35 W power with scan spacing 0.25 mm and scan speed 10 m/s to 12 m/s. Colored pigment addition alters laser energy absorption relative to natural polyamide 11. The energy density must be recalibrated for each color batch. Fresh powder is blended with sieved used powder at a refresh ratio of 50:50 by weight for dimensional parts; if color consistency is critical, the used-powder fraction is reduced to 30 wt%. Tensile properties of unfilled nylon 11 laser-sintered parts published under ISO 527-2 commonly fall between 1.0 GPa and 1.4 GPa modulus and 45 MPa to 52 MPa tensile strength. Flexural modulus under ISO 178 is specified by the finished-component drawing; heat deflection temperature under ISO 75-2 method A at 1.8 MPa is used for functional load cases. The process failure mode is wall curl at build chamber temperatures below 168°C; above 175°C, powder caking becomes irreversible. The powder must be conditioned at 50% RH or below and re-sieved through a 140 µm ultrasonic screen before charging. Dielectric and melt-flow shifts caused by pigment masterbatch require real-time powder bed density measurement after each recoating cycle. Published data for this specific colorized grade in multi-laser systems is limited; machine parameter development on a single-laser system is required before transfer to a twin-laser production cell. Terminal components are functional housings, living hinge brackets, assembly jigs, and low-volume production covers.
| Process | Critical control variable | Typical boundary | Reference method |
| Electrostatic spray | Substrate preheat | 230°C–260°C | ISO 8130-2:2021 |
| Laser powder bed fusion | Build chamber temperature | 168°C–175°C | ISO 527-2 |
| Fluidized-bed dip | Substrate preheat | 280°C–310°C | ISO 4624 |
| Solvent-borne suspension | High-shear tip speed | 15 m/s–20 m/s | ISO 2884-2 |
A different thermal loading profile is observed when the same colored powder is applied by fluidized-bed dipping to automotive seat recliner springs. The steel spring is preheated to 280°C–310°C before immersion. Dip dwell is held at 3 s to 6 s; the powder bed height is maintained between 500 mm and 800 mm. Fluidizing air dew point must be no higher than -40°C, and bed density is controlled at 0.4 g/cm³ to 0.6 g/cm³. Coating thickness on spring wire is specified between 300 µm and 500 µm. Adhesion is measured by pull-off per ISO 4624 at 12 MPa minimum. Corrosion resistance is evaluated by ASTM B117 neutral salt spray for 720 h with scribe creep not exceeding 2 mm. Cyclic automotive corrosion testing may be substituted using ISO 16701 or SAE J2334 when OEM approval requires it. The main process defect is foam collapse in the bed when humidity enters the air supply; this generates pinholes at the spring-coating interface. The product is applied directly from the original container; dry blending with reclaimed powder is limited to 40 wt% reclaim for seat mechanism parts. Terminal components are seat recliner springs, brake cable guides, and trunk hinge springs.
Architectural hardware made from aluminum extrusions and galvanized steel requires a lower processing ceiling than heavy steel sections. Hiprolon 11 PES Colorized Nylon powder is electrostatically sprayed onto preheated aluminum gate brackets at 200°C to 220°C, followed by cure at 180°C to 200°C for 5 min to 8 min. Zinc-coated steel base plates are prepared by sweep blasting to Sa 2½ per ISO 8501-1 and preheated to 240°C to 250°C. Dry film thickness is set at 180 µm to 300 µm for decorative and mechanical protection. The coating is specified without a liquid topcoat; color stability is documented under ISO 2810 natural weathering for 1000 h in south Florida exposure. Corrosion testing follows ISO 12944-6 category C4 high durability, with annual corrosion rate not exceeding 10 µm/year. Adhesion is checked using ISO 2409 cross-cut classification 0 or 1. The formulation is applied as a single-layer powder; no external dry-flow additive is required if the hopper is maintained below 50% RH. If application is interrupted, the powder must be removed from the feed hopper and stored sealed at 20°C to 25°C. A process limitation appears when the aluminum alloy contains high copper content; preheat above 220°C may cause incipient melting at grain boundaries. Published data for this specific colorized grade on anodized aluminum is limited; a pre-production coupon trial is required. Terminal articles include gate hinges, railing brackets, and handle backplates.
A solvent-borne suspension is often specified for outdoor metal furniture when electrostatic equipment cannot access tubular interiors. The starting suspension contains 10 wt% to 25 wt% Hiprolon 11 PES Colorized Nylon powder in a solvent blend of xylene, n-butanol, and aromatic 100 at 70:20:10 by volume. Anti-settling organoclay is added at 0.5 wt% to 1.5 wt% based on total formulation weight. A polymeric dispersant is incorporated at 0.05 wt% to 0.1 wt% active matter. High-shear dispersion is performed with a dissolver disc at tip speed 15 m/s to 20 m/s for 25 min to 35 min; suspension temperature must not exceed 40°C. Fineness of grind is controlled below 25 µm on a Hegman gauge, corresponding to 7 Hegman units. Application viscosity is adjusted to 300 mPa·s to 800 mPa·s at 25°C under ISO 2884-2. Spraying is conducted with a 1.8 mm to 2.2 mm nozzle at 2.5 bar to 3.5 bar air pressure. Curing is performed at 180°C to 200°C for 10 min to 15 min. Volatile organic compound emissions are managed under the industrial emissions scope of Directive 2010/75/EU. The primary failure mode is pigment re-agglomeration after 24 h of storage; viscosity increase above 15% indicates re-agglomeration and requires re-dispersion. Terminal products are exterior metal tables, chairs, lamps, and planter frames.
Cosmetic and personal-care use of a colored nylon powder is valid only when the pigment system is registered for cosmetic application and the supplied batch meets microbial cleanliness requirements. An anhydrous pressed powder formulation may contain 5 wt% to 15 wt% colorized nylon powder. If a liquid color dispersion is needed, the powder is pre-dispersed in isododecane at 20 wt% to 30 wt% solids under high shear at 3000 rpm for 20 min. The finished article must be evaluated under Regulation (EC) No 1223/2009 Article 14 safety assessment; the pigment component must satisfy the applicable annexes and be authorized under 21 CFR parts 73, 74, or 81 for United States marketing if a color additive claim is made. Nylon-11 is listed under the INCI name; the powder particle size D90 should be ≤15 µm to avoid perceptible grittiness in pressed powders. Industrial grades with a D50 above 30 µm require air-jet milling before cosmetic use. Microbial quality is verified by USP <61> and USP <62> or ISO 17516. Water-containing emulsions introduce preservative challenges and are not processed from the same powder stock without compatibility testing. Published data for this specific colorized grade in cosmetic matrices is limited; the formulator is responsible for confirming pigment purity and heavy-metal limits. Terminal products include colored face powders, blushes, and anhydrous lip coatings.
| Application | Mandatory standard | Test endpoint |
| Dishwasher basket coating | FDA 21 CFR 175.300 | Migration limits for food-contact film |
| Laser-sintered functional part | Directive 2011/65/EU Annex II | Pb, Hg, Cr(VI), PBB, PBDE ≤0.1 wt%; Cd ≤0.01 wt% |
| Automotive seat spring | IATF 16949 / ASTM B117 | 720 h scribe creep ≤2 mm |
| Cosmetic pressed powder | Regulation (EC) No 1223/2009 | Safety assessment per Article 14 |
For flow-control components exposed to neutral chloride solutions, Hiprolon 11 PES Colorized Nylon powder is applied by electrostatic spray or fluidized dip to cast iron and stainless steel pump impellers. The metal surface is degreased and abrasive blasted to ISO 8501-1 Sa 2½; a phosphate conversion coating is used on carbon steel. Preheat is set to 250°C to 280°C. The powder is sprayed to a dry film thickness of 500 µm to 800 µm in one or two passes; a second pass is applied after the first layer reaches 120°C to 140°C surface temperature. Film continuity is checked with a 3 kV holiday detector at 500 µm. Continuous immersion in 3.5 wt% NaCl at 40°C is used as a screening test for 1000 h with no blistering per ISO 4628-2. Dielectric strength is measured under ASTM D149 at 10 kV/mm minimum dry. The main process risk is pinholing at sharp impeller radii; edge coverage is improved by preheating the casting to the upper end of the window and reducing gun-to-part distance to 100 mm. The powder is not recommended for continuous exposure to concentrated mineral acids or polar solvents above 60°C. Terminal components are pump impellers, valve bodies, and flange couplings.
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Hiprolon 11 PES Colorized Nylon powder is a polyamide 11 feedstock supplied by Suzhou Hipro Polymers. The base polymer is polymerized from 11-aminoundecanoic acid, and the PES qualifier is a supplier-defined grade identifier within the Hiprolon 11 family. The colorized designation indicates a dispersed pigment package rather than a polyethersulfone alloy or copolymer. Product-level published data for this specific colorized configuration is limited; therefore, the numerical ranges cited in this document are drawn from the supplier’s PA11 powder class and from ISO-aligned measurements on colour-stabilized polyamide 11 feedstocks.
Primary use is as a powder-bed fusion feedstock for selective laser sintering platforms equipped with 30–70 W CO₂ lasers. The powder is applied in layer heights of 0.10–0.15 mm, most commonly 0.12 mm, and processed under inert nitrogen atmosphere with oxygen concentration held below 2 vol%. The grade is deployed where in-process colouration removes a downstream dyeing operation, provided that the pigment’s effect on laser energy absorption and melt viscosity is controlled. Typical application fields include functional prototypes, low-volume automotive underhood components, snap-fit enclosures, tooling aids, and consumer goods subject to intermittent hydrocarbon contact.
Melting peak determined by ISO 11357-3 is typically 201–203 °C; crystallization peak is typically 160–165 °C. The supercooling interval between melt peak and crystallization onset is therefore approximately 36–43 °C, which is wider than that of many PA12 grades. In production powder-bed fusion machines, the build chamber setpoint is maintained at 170–185 °C, with the part-bed surface typically 175–185 °C and the fresh powder feed region at 120–140 °C. These values are starting points and must be shifted downward by 3–5 °C for recycled colour-stabilized powder after multiple build cycles because retained fines and pigment agglomerates alter thermal conductivity.
Energy density is treated as the principal consolidation variable. A starting area energy density of 0.04–0.08 J/mm² is typical for pigmented PA11 at 0.12 mm layer thickness. Operators commonly adjust effective laser power in increments of 0.005 J/mm² to reduce edge curl and surface orange-peel. With colour-stabilized powder, the acceptable bed-temperature deviation is narrower than for natural PA11; a variation of ±5 °C can produce visually apparent over-sintering or incomplete fusion at thin-wall sections. Published data for this specific PES colorized configuration is limited, so the processing window must be revalidated per machine and per color batch.
Melt volume-flow rate by ISO 1133-1 at 230 °C and 2.16 kg loading is typically 7–12 cm³/10 min for PA11 laser-sintering grades, though lot-specific values may fall outside this range. A batch at the low-flow end requires an increase in area energy density of 3–5 % to avoid residual porosity; a batch at the high-flow end can cause melt-pool spreading and loss of fine features below 0.5 mm. These adjustments are performed on a lot-by-lot basis because the supplier’s published data for the colorized PES grade remains limited.
Polyamide 11 absorbs water through the amide group. For powder-bed fusion, residual moisture above 0.1 wt% as measured by ISO 15512 produces steam porosities, edge lifting, and irregular recoating. Pre-drying at 80 °C for 4–6 h in a desiccant dryer with inlet air dew point ≤ −40 °C is required before processing. At ambient relative humidity greater than 60 %, open powder containers should be re-dried after exposure exceeding 8 h because surface moisture adsorption is sufficient to disturb flow.
Bulk density by ASTM D1895 Method B is typically 0.45–0.55 g/cm³; tapped density is 0.55–0.65 g/cm³. Particle-size distribution by laser diffraction according to ISO 13320-1 typically has D10 25–35 µm, D50 45–55 µm, and D90 <100 µm. Particle morphology is spheroidal, and dynamic image analysis under ISO 13322-2 is used to detect agglomerates. Coarse pigment agglomerates above 150 µm are a known root cause of recoater streaks; a 125–150 µm mesh sieve is applied to recovered powder before reintroduction into production-scale hoppers.
On equipment with counter-rotating recoaters operating at 80–250 mm/s, electrostatic charge accumulation produces powder scattering and local starvation. This effect is more pronounced in colour-stabilized powders because pigment systems can increase tribocharging. Production lines therefore require grounding continuity below 10 Ω on all powder-conveying elements and controlled humidity below 35 % RH in the powder-handling area.
Carbon black and other colourants alter absorption of 10.6 µm CO₂ laser radiation. Colour-stabilized PA11 powder may require a reduction in effective laser power of 5–15 % relative to natural PA11 to maintain equivalent melt-pool temperature. Without this compensation, the higher absorbed energy can generate surface temperatures above 220 °C, producing in-plane curl, over-sintered surfaces, and thermo-oxidative discoloration if oxygen is not kept below 2 vol%.
Pigment particles also act as nucleation agents. In nucleated PA11, the crystallization exotherm can shift by 2–5 °C toward higher temperature and the crystalline fraction can increase. Consequently, elongation at break and impact resistance are often lower in the colorized grade than in the natural powder, even when dimensional accuracy remains acceptable. Published data for the specific PES colorized configuration is limited; therefore, direct substitution of natural PA11 process parameters is not recommended without tensile testing under ISO 527-2.
Consolidated mechanical properties in the XY build orientation, measured on ISO 527-2 type 1BA specimens built with 0.12 mm layers, typically fall within a tensile modulus of 1,200–1,500 MPa, tensile strength of 40–50 MPa, and elongation at break of 20–40 %. Z-orientation tensile strength is generally 60–80 % of XY values because interlayer adhesion limits crack propagation resistance. Notched Charpy impact by ISO 179-1/1eA is typically 4–7 kJ/m². These ranges describe the PA11 powder-bed fusion class; colourants may shift elongation and impact downward through nucleation effects and must be characterized separately for the colorized PES grade.
Batch-to-batch melt viscosity variation is a recognised production bottleneck. Viscosity number determined by ISO 307 in 96 % sulfuric acid for PA11 SLS grades typically spans 120–160 mL/g. The lower end favours densification and flow, while the upper end improves toughness but can raise porosity if energy density is not adjusted. Raw-powder acceptance testing should therefore include moisture content by ISO 15512, particle-size distribution by ISO 13320-1, bulk density by ASTM D1895, and melt volume-flow rate by ISO 1133-1 for each supplier lot.
Selection between PA11, PA12, and PA6 powder is governed by melting point, moisture uptake, source chemistry, and mechanical response. Table 1 summarizes typical comparative ranges for the polyamide powder classes.
| Property | Method | Hiprolon 11 PES / PA11 class | PA12 SLS class | PA6 powder class |
|---|---|---|---|---|
| Density | ISO 1183-1 | 1.03–1.05 g/cm³ | 1.01–1.03 g/cm³ | 1.13–1.15 g/cm³ |
| Melting peak | ISO 11357-3 | 201–203 °C | 174–178 °C | 220–223 °C |
| Water absorption at saturation | ISO 62 | 1.8–2.0 % | 1.4–1.6 % | 9.5–10.5 % |
| Tensile modulus, injection molded | ISO 527-2 | 1,200–1,500 MPa | 1,400–1,800 MPa | 2,800–3,400 MPa |
| Charpy notched impact at 23 °C | ISO 179-1/1eA | 4–7 kJ/m² | 4–7 kJ/m² | 5–8 kJ/m² |
| Heat deflection temperature at 0.45 MPa | ISO 75-2/B | 45–55 °C | 50–60 °C | 75–85 °C |
Compared with PA12, Hiprolon 11 PES exhibits a higher melting peak of 201–203 °C versus 174–178 °C, a higher density of 1.03–1.05 g/cm³ versus 1.01–1.03 g/cm³, and comparable notched impact. The higher melting point permits exposure to higher service temperatures, but it narrows the sintering window and raises energy demand. The PA11 chain has a methylene-to-amide ratio of 10:1, slightly lower than the 11:1 ratio of PA12, which contributes to moderately higher water absorption at saturation but still much lower than PA6.
Compared with PA6, polyamide 11 demonstrates substantially lower moisture uptake at saturation, 1.8–2.0 % versus 9.5–10.5 % by ISO 62. This translates into improved dimensional stability under humid or aqueous exposure. However, PA6 powder offers higher tensile modulus and heat deflection temperature, so PA11 is selected where toughness, low moisture regain, and hydrocarbon tolerance dominate over stiffness. The colorized PES variant differs from natural Hiprolon 11 primarily in laser absorptivity, crystallization behaviour, and surface appearance; mechanical equivalence should not be assumed.
Compliance for a colour-stabilized polyamide 11 powder depends on both the base resin and the pigment package. The matrix in Table 2 identifies the principal regulatory instruments applicable to industrial and consumer articles.
| Regulatory instrument | Scope | Acceptance criterion | Lot-level verification |
|---|---|---|---|
| EU REACH Regulation (EC) No 1907/2006 | SVHC candidate list | SVHC < 0.1 wt% per article | Supplier declaration under Article 33 |
| RoHS Directive 2011/65/EU Annex II | Homogeneous material in EEE | Pb, Hg, Cr(VI), PBB, PBDE < 1000 ppm; Cd < 100 ppm | XRF screening and wet chemical confirmation |
| US FDA 21 CFR 177.1500(b) | Nylon resins for food contact | Extractives comply with specified migration limits | Base PA11 manufacturer declaration |
| US FDA 21 CFR 178.3297 | Colourants for polymers | Colourant admitted for intended use | Pigment supplier declaration |
| EU REACH Annex XVII | Restricted substances | Applicable restrictions by substance | Formulation audit and lot certificate |
Compliance cannot be assumed from the base PA11 chemistry alone. The pigment system must be assessed separately, and each production lot should include a certificate covering moisture by ISO 15512, particle-size distribution by ISO 13320-1, bulk density by ASTM D1895, and melt volume-flow rate by ISO 1133-1. Retention of these records is required for automotive production-part approval process submissions and for aerospace process control systems where powder batch traceability is mandatory.
Operational boundary: avoid dry-blending the colorized powder with amine-based additives or strong organic bases, because these species can accelerate amide hydrolysis and discoloration at build temperatures above 200 °C. The material is not recommended for continuous exposure to strong mineral acids, phenols, or oxidizing acids. For parts that contact aliphatic hydrocarbons or diesel fuel, PA11 resistance according to ISO 175 is generally favourable, but colourant-specific extraction data must be obtained before field deployment. Unfused powder is removed with compressed air below 3 bar and bead-blasted with glass media of 50–100 µm; chemical vapour smoothing should be validated separately because it can alter pigment distribution and surface dimensional stability.
