| HS Code | 416471 |
| Product Name | Evonik VESTOSINT 1111 colored |
| Material Type | Polyamide 12 |
| Color | Colored |
| Density | 1.01 g/cm³ |
| Melting Point | 178 °C |
| Tensile Strength | 45 MPa |
| Elongation At Break | 300% |
| Shore D Hardness | 55 |
| Water Absorption | 0.3% |
| Bulk Density | 0.45 g/cm³ |
| Average Particle Size | 50 µm |
| Electrical Dielectric Strength | 30 kV/mm |
As an accredited Evonik VESTOSINT® 1111 colored Polyamide 12 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Evonik VESTOSINT® 1111 colored Polyamide 12 is supplied as a fine powder in 20 kg sealed polyethylene-lined paper bags, palletized for safe transport. |
| Container Loading (20′ FCL) | 20′ FCL container loading of Evonik VESTOSINT® 1111 colored Polyamide 12, securely packed on pallets, protected from moisture and damage. |
| Shipping | Evonik VESTOSINT® 1111 colored Polyamide 12 ships in sealed, moisture-resistant packaging to prevent clumping. Transport in dry, ventilated containers, protected from direct sunlight and humidity. Handle carefully to avoid dust generation. Product is non-hazardous under standard shipping regulations. Ensure secure stacking to prevent bag damage during transit. |
| Storage | Store Evonik VESTOSINT® 1111 colored Polyamide 12 in its original, tightly sealed container in a cool, dry, well-ventilated area. Protect from moisture, humidity, and direct sunlight. Avoid temperatures exceeding 25°C. Keep away from ignition sources and incompatible materials. Use within shelf life, ensuring containers remain closed when not in use to prevent contamination. |
| Shelf Life | Evonik VESTOSINT® 1111 colored Polyamide 12 has a shelf life of approximately 2 years when stored in unopened, dry, cool conditions. |
Evonik VESTOSINT 1111 colored polyamide 12 is deposited as a fused film on ferrous and non-ferrous metallic substrates by three production methods: fluidised-bed dipping, electrostatic powder projection, and direct powder application to preheated surfaces. The powder is supplied as a ready-to-use single-component material. No accelerator, hardener, or solvent is incorporated before application. Fusion proceeds after powder particles contact a substrate heated above the PA12 melting range. This is followed by a hold at 180–200°C, which completes coalescence and levels the film. The colored grade is sensitive to melt history above 220°C. Discernible colour shift and impact loss can occur when the powder is held above this limit for more than 3 min. Powder handling on fluidised-bed lines requires moisture control. At relative humidity above 60%, pre-drying at 80°C for 3–4 h is applied to prevent fluidisation channeling and intermittent build-up on multi-wire racks.
Dishwasher basket wirework receives the highest coating thicknesses among domestic applications. Low-carbon steel wire of 2.0–5.0 mm diameter is welded into racks and baskets. The welded assembly is degreased in alkaline solution and phosphated. A zinc phosphate conversion layer of 1.0–2.0 g/m² improves adhesion of the PA12 topcoat. High-throughput lines apply a thin epoxy primer at 80–120 µm before PA12 powder coating. The preheated part enters the fluidised bed at 320–350°C surface temperature. Immersion time is 3–6 s for thin wire and 10–20 s for heavy wire frames. The resulting dry film thickness ranges from 250–450 µm on rack surfaces and up to 500 µm on cutlery basket edges for impact protection. Post-fusion is performed at 180–195°C for 3–5 min. If reclaim is used, the powder is sieved through a 125 µm mesh and blended with virgin material at a maximum of 30 wt%. Higher reclaim ratios can narrow the particle size distribution and reduce edge coverage on wire intersections. The coated baskets are tested for dry film thickness according to ISO 2178 and adhesion according to ISO 2409 class 0–1. Resistance to dishwasher detergent is evaluated by immersion in alkaline media at pH 10–12 and 65–75°C. For European appliance compliance, the cured film must meet REACH and RoHS 2011/65/EU. Food-contact compliance is not an automatic property of the powder. When required, the final film must be tested under FDA 21 CFR 175.300 with the specific coloured pigment package.
Spring steel clips of 0.7–0.9 mm thickness are coated by electrostatic powder application at 30–60 kV and 10–30 µA. The thin section loses heat quickly. Cold powder application followed by curing at 190–205°C for 8–12 min is used when coating thickness must remain below 120 µm. For higher film build, the clips are preheated to 300–350°C before powder application. Faraday cage effects occur at wire-to-wire contact points and inside spring coils. Manual touch-up with a preheated air knife or small fluidised bed is necessary to close these areas. The target dry film thickness for seat recliner springs is 150–250 µm. Brake pad wear sensor clips receive 80–150 µm to avoid assembly interference. The film must pass ISO 2409 cross-cut adhesion with class 0–1 and ISO 1519 mandrel bending on a 5 mm mandrel without visible cracking. Neutral salt spray testing per ISO 9227 is run for 720 h. Scribe creep must remain below 2 mm on zinc-phosphated spring steel with 30–50 µm epoxy primer. Stone chip resistance is assessed per ASTM D3170 and is more sensitive to film thickness than to pigment loading. The terminal parts are seat recliner springs, brake pad wear sensor clips, and clutch return springs.
For cast iron valve bodies, the limiting process factor is not powder fusion but core heat capacity. Ductile iron and cast steel components with wall thickness 6–25 mm require shot blasting to ISO 8501-1 Sa 2.5 before coating. A high-temperature liquid epoxy or phenolic primer is applied at 30–60 µm dry film thickness. The preheat oven temperature is set to 360–390°C. A uniform core temperature is reached only after 30–60 min, depending on part mass and air circulation. The hot part is dipped for 10–30 s in a fluidised bed of VESTOSINT 1111. The film thickness after one dip ranges from 500–1000 µm. Post-fusion is held at 185–195°C for 5–10 min. Overheating above 220°C must be avoided because the coloured powder can shift in hue and lose impact strength. The lined parts are tested for dry film thickness by ISO 2178 and pull-off adhesion by ISO 4624. Pull-off values above 10 MPa are typical on blast-cleaned cast iron with primer. The PA12 lining resists aliphatic hydrocarbons, hydraulic oils meeting ISO 11158, and water-glycol fluids. It is not recommended for concentrated sulfuric acid, formic acid, phenol, or strong oxidising agents. Terminal products include lined butterfly valve discs, pump volute linings, flow meter bodies, and level switch floats.
Stainless steel AISI 304/316 instrument trays and support arms are passivated before coating. Passivation follows ASTM A967. No primer is normally used on clean stainless steel. The PA12 powder is applied by electrostatic projection or fluidised dip at 200–300 µm dry film thickness. A lower thickness is preferred on mesh areas to avoid closing apertures. The coated trays are exposed to steam sterilisation at 121°C for 15 min per cycle. The PA12 film remains below its melting range during this exposure. Steam cycles at 134°C are outside the continuous load-bearing limit. Deformation can occur if a load is applied to the tray during a 134°C cycle. Disinfectant compatibility covers 70% isopropyl alcohol, 3% hydrogen peroxide, and peracetic acid at 0.5%. Prolonged soaking in glutaraldehyde-based solutions may stress-crack the film. Medical device use requires grade-specific biocompatibility data according to ISO 10993-1. VESTOSINT 1111 is not supplied as a medical-grade powder. The terminal application is the armature and handling surface of reusable instrument trays, not load-bearing implant surfaces.
| Application segment | Typical dry film thickness | Primary adhesion or mechanical test |
|---|---|---|
| Dishwasher basket wirework | 250–450 µm | ISO 2409 class 0–1 |
| Automotive spring steel clips | 80–250 µm | ISO 2409 class 0–1; ISO 1519 5 mm mandrel |
| Cast iron valve bodies | 500–1000 µm | ISO 4624 > 10 MPa |
| Medical instrument trays | 200–300 µm | ISO 2409 class 0–1 |
| Textile roller coatings | 300–500 µm | ISO 2409 class 0–1 |
| Subsea cable shells | 600–1000 µm | ASTM D2794; ISO 9227 1000 h |
High-speed folding machines in textile plants subject guide rollers to combined detergent exposure and fabric abrasion. Steel or aluminium rollers of 60–150 mm diameter are degreased and blasted. Aluminium rollers receive a chromate-free conversion coating to prevent filiform corrosion at the coating-metal interface. The PA12 powder is applied by electrostatic spray or fluidised bed to 300–500 µm thickness. After fusion at 180–200°C, the coating is ground to a surface roughness Ra ≤ 2 µm. Grinding removes the skin layer and creates a uniform sliding surface. Coefficient of friction depends on the counterface material and yarn speed. Published data for this specific colored configuration is limited. The film must withstand 1000 cycles of immersion in 5 g/L IEC-A* reference detergent per IEC 60456 at 60°C without blistering or adhesion loss. Adhesion is checked by ISO 2409. The operational temperature limit is 85°C continuous. Strong alkaline solutions above pH 13 are not recommended. Terminal products are folder guide rollers, yarn guide segments in spinning frames, and rollers in automatic cutting tables.
Steel shells for subsea cable bend restrictors are coated by fluidised-bed dipping to 600–1000 µm. The shells are shot-blasted to ISO 8501-1 Sa 2.5 and primed with an epoxy primer at 60–100 µm. Preheating is set to 350–380°C. Immersion time is adjusted from 8 s to 25 s based on shell wall thickness. A single dip is preferred because repeated dipping can create internal stress at the primer-topcoat interface. The high film build absorbs point impacts from cable touchdown and seabed contact. Impact resistance is evaluated according to ASTM D2794. Salt spray resistance is tested per ISO 9227 for 1000 h on scribed coupons, with creep limited to 2 mm. Water absorption is measured by ISO 62. PA12 absorbs less moisture than PA6 and PA66; however, grade-specific equilibrium absorption for the coloured VESTOSINT 1111 should be confirmed with the pigment package. Long-term direct UV exposure is not recommended without a UV-stabilised overcoat. The terminal products are bend restrictor shell coatings, cable hang-off clamp linings, and subsea junction box external surfaces.
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Evonik VESTOSINT® 1111 colored polyamide 12 is supplied as a pigmented thermoplastic coating powder based on polyamide 12 (PA12). The grade is intended for dry coating of metal components in fluidized-bed dipping, electrostatic spraying, and related powder-coating lines. Pigmentation is introduced by melt compounding before particle formation, which distributes the colorant within the PA12 matrix rather than on the particle surface. The base resin exhibits a melting range of 176–180 °C measured by ISO 11357-3, a fused density of 1.01–1.04 g/cm³ under ISO 1183-1, and a median particle size reported in technical datasheets between 50 μm and 80 μm under ISO 13320-1. These characteristics position the powder for medium-film protective coatings on steel, aluminium, and other thermally stable substrates.
Specification compliance for VESTOSINT® 1111 colored is typically evaluated by laser diffraction, differential scanning calorimetry, bulk density measurement, and Karl Fischer moisture analysis. The powder is characterised by a controlled particle size distribution to support consistent fluidization and electrostatic transfer. Fused coatings show Shore D hardness values typical for unplasticised PA12, while elongation and impact resistance remain dominated by molecular weight retention during processing. Excessive preheat temperature or prolonged hold time reduces molecular weight through thermo-oxidative scission, which lowers elongation at break and can dull the surface of light-colored grades. Published data for the exact pigment-dependent shift in crystallization kinetics is limited, and shade-specific validation is required.
| Property | Test method | Typical value/range |
|---|---|---|
| Base polymer | — | Polyamide 12 |
| Melting range | ISO 11357-3 | 176–180 °C |
| Fused density | ISO 1183-1 | 1.01–1.04 g/cm³ |
| Median particle size | ISO 13320-1 | 50–80 μm |
| Bulk density | ISO 60 | 0.45–0.55 g/cm³ |
| Moisture content as supplied | ISO 15512 | < 0.2 % |
| Shore D hardness of fused film | ISO 868 | 70–75 |
| Elongation at break of PA12 base | ISO 527-2 | > 150 % |
| Water absorption at 23 °C, 50 % RH | ISO 62 | 0.6–0.8 % |
On steel tubular components, fluidized-bed production lines commonly use preheat ovens set between 250 °C and 350 °C, with thin-wall parts at the lower end and heavy castings at the upper end. Dip time in the fluidized bed typically ranges from 2 s to 10 s; residual heat from the part fuses the deposited layer into a continuous film. Air velocity in the fluidized hopper is generally adjusted between 0.2 m/s and 0.5 m/s to maintain a smooth bubbling bed without slugging. For electrostatic spraying, corona guns operate at 60–100 kV; charge-to-mass ratio, particle size distribution, and surface resistivity jointly control transfer efficiency. The powder must be kept below 0.2 % moisture by Karl Fischer titration because moisture increases resistivity and disrupts corona charging behaviour. When part temperature after preheating is below 176 °C, the deposited powder sinters but does not flow into a void-free film. When the surface remains above 220 °C for more than a few seconds, localised oxidation can produce yellowing and gloss loss in colored grades. The practical processing window is therefore approximately 40 K, which is wider than for low-density polyethylene powder coatings but narrower than for some nylon 11 formulations. Production experience on conveyorised lines shows that thick sections with high thermal inertia produce more reproducible films when preheat temperatures are biased downwards and immersion time is increased.
Differences between VESTOSINT® 1111 colored and natural VESTOSINT® 1111 concentrate in melt rheology, color retention, and surface charge response. Because the colorant is melt-compounded into PA12 before grinding, pigment particles are embedded in each powder grain. This approach avoids segregation and dry-blend variability observed with surface-coated pigments. However, some inorganic pigments can act as nucleating agents, shifting crystallization onset toward higher temperatures and increasing the effective melt viscosity at a given preheat temperature. The practical consequence is that certain dark and saturated shades require a 5–10 °C increase in preheat temperature or a longer dip residence time to reach equivalent film flow, although published data for this specific grade is limited and shade-dependent.
Compared with PA11-based coating powders, PA12 generally exhibits lower equilibrium water absorption and better retention of mechanical properties after water immersion. Compared with low-density polyethylene or ethylene-vinyl acetate powder coatings, PA12 offers higher upper service temperature and abrasion resistance but requires higher preheat temperatures. Relative to natural VESTOSINT® 1111, the colored version may show a slightly wider particle size distribution if pigment masterbatches alter grinding behaviour. Batch-to-batch variance in shade is typically controlled by spectrophotometric measurement against a reference standard, not by wet chemistry.
| Property | VESTOSINT® 1111 colored PA12 | PA11 coating powder | LDPE/EVA coating powder |
|---|---|---|---|
| Melting range | 176–180 °C (ISO 11357-3) | Approx. 185–190 °C (ISO 11357-3) | Approx. 100–110 °C (ISO 11357-3) |
| Continuous service temperature | Up to 100 °C | Up to 120 °C | Usually below 60 °C |
| Water absorption at 23 °C, 50 % RH | 0.6–0.8 % (ISO 62) | Approx. 1.9 % saturation | < 0.1 % |
| Shore D hardness of fused film | 70–75 (ISO 868) | Approx. 65 | 40–50 |
Corona charging performance is controlled by particle resistivity and surface treatment. For reproducible electrostatic transfer, surface resistivity is generally maintained between 1010 Ω and 1013 Ω. Below this range, back-ionization on the grounded substrate produces pinholes; above it, powder particles do not adhere sufficiently during transport. In high-humidity production environments above 60 % RH, the powder can pick up surface moisture, lower resistivity, and reduce first-pass transfer efficiency. Tribostatic guns are generally less predictable with PA12 than corona guns because contact electrification depends on the triboelectric series position of both the charging tube and the powder surface; pigment type can shift that position. This is one reason why electrostatic application of colored VESTOSINT® 1111 requires gun parameter revalidation whenever the shade or pigment batch is changed.
Fused VESTOSINT® 1111 colored coatings are specified for non-load-bearing protective layers where impact resistance, low friction, and resistance to aliphatic hydrocarbons are required. The continuous service temperature for PA12 coatings is generally stated up to 100 °C, with short-term excursions to 120 °C permitted only after verification on the actual substrate geometry. The glass transition of PA12 lies near 40–50 °C; below that temperature impact strength remains high. Continuous exposure to strong mineral acids, phenols, or concentrated formic acid should be avoided because these substances attack the amide linkage. Resistance to hot water and detergent solutions is adequate for dishwasher baskets, but long-term exposure to boiling water under load may induce plasticization and creep. Abrasion resistance is typically superior to plastisol coatings, and the material does not require plasticizer migration for flexibility.
The powder should be stored in sealed containers at 15–30 °C and relative humidity below 60 %. If exposed to moisture, pre-drying at 80 °C for 4 h is common before electrostatic application. Drying above 90 °C risks partial sintering of the powder bed in static ovens. Thermo-oxidative degradation of PA12 follows an Arrhenius dependence; in the preheat temperature range of 250–350 °C, hold times above 3–5 min can cause measurable loss of molecular weight. Ovens with high air turnover and indirect gas heating expose parts to oxygen, accelerating yellowing of unpigmented and light-colored variants. The colored grade, depending on pigment chemistry, may mask initial yellowing, making melt-flow reduction the only early indicator of degradation. This operational boundary is important for rework: multiple reheating cycles lower impact resistance and should be limited to 2–3 cycles unless incoming melt viscosity testing under ISO 1133-1 confirms molecular weight retention.
In dishwasher basket coating lines, VESTOSINT® 1111 colored is applied to wire goods, brackets, and handles where the fused layer provides a soft-touch, electrically insulating barrier against metal edges. Fluidized-bed lines are typically integrated with continuous conveyor ovens, and part temperature is confirmed by infrared pyrometry before dipping. In automotive clips, seat components, and furniture hardware, the coating dampens vibration and protects against stone chipping. For each application, final film thickness is commonly controlled between 200 μm and 500 μm by adjusting preheat temperature and dip or spray time. The optimum thickness is determined by adhesion testing under ISO 4624 and impact testing under ISO 6272-1. Surface preparation affects adhesion more than film thickness: degreased, grit-blasted, phosphate-treated, or primed substrates give reproducible pull-off strength, while contaminated cold-rolled steel can produce adhesive failure at the coating-substrate interface.
Batch certificates for VESTOSINT® 1111 colored typically report melt range, density, particle size distribution, moisture content, and shade coordinates. Compliance documentation is available under REACH Regulation (EC) No 1907/2006 and RoHS Directive 2011/65/EU; specific SVHC declarations should be requested from the supplier for the exact pigment formulation. The general-grade datasheet does not automatically establish food-contact status under FDA 21 CFR or EU Regulation (EC) No 1935/2004; migration testing is required for direct food-contact applications. Waste powder from overspray can be recovered and blended with virgin material only if sieve analysis shows no agglomerates above 200 μm and moisture remains below 0.2 %; otherwise, vitrified particles produce surface defects in the fused film.
