| HS Code | 497805 |
| Product | Evonik VESTOSINT® 1301 white Polyamide 12 |
| Material | Polyamide 12 (PA12) |
| Color | White |
| Density | 1.01 g/cm³ |
| Melting Point | 176 °C |
| Bulk Density | 0.47 g/cm³ |
| Particle Size | Coarse powder for fluidized-bed coating; typical median approx. 170 µm |
| Vicat Softening Temperature | 145 °C |
| Shore D Hardness | 75 |
| Tensile Strength | 40 MPa |
| Elongation At Break | 200 % |
| Water Absorption | 0.7 % |
| Thermal Stabilization | Present |
As an accredited Evonik VESTOSINT® 1301 white Polyamide 12 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | VESTOSINT® 1301 white Polyamide 12 is supplied as a fine powder in moisture-protected, sealed 25 kg bags for coating applications. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with Evonik VESTOSINT® 1301 white Polyamide 12, securely packed, dry, non-hazardous, ready for transport. |
| Shipping | Evonik VESTOSINT® 1301 white Polyamide 12 ships in moisture-proof, sealed packaging to prevent contamination. Store in a cool, dry area away from ignition sources. During transport, avoid extreme heat and direct sunlight. Handle carefully to minimize dust exposure; use appropriate PPE and ensure adequate ventilation. |
| Storage | Store VESTOSINT® 1301 white Polyamide 12 in its original, unopened container in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and ignition sources. Keep tightly sealed to prevent moisture absorption and contamination. Avoid creating dust clouds; use appropriate handling and grounding to prevent static discharge. Follow manufacturer’s shelf-life recommendations. |
| Shelf Life | Shelf life is approximately 2 years from manufacture when stored unopened, cool, and dry. |
In electrostatic spray coating of dishwasher baskets and retail wire shelving, the VESTOSINT 1301 white powder is applied to low-carbon steel after alkaline degreasing and zinc phosphating. The powder is fluidized in a stainless-steel hopper with dried compressed air at 60–100 kV corona charging voltage and 1.0–2.5 bar feed pressure. The substrate is maintained at 20–25°C to avoid premature melt. Powder output is set between 80–120 g/min per gun, and gun-to-target distance is held at 200–250 mm. Faraday cage areas at wire intersections and welded joints receive lower film thickness. The powder fraction with D50 35–45 µm provides acceptable edge penetration for this geometry. Fines below 10 µm absorb charge and adhere to the gun nozzle, causing spitting after 30–60 min of continuous operation. The powder is pre-dried at 80°C for 4 h when the water content exceeds 0.15 wt% by Karl Fischer titration. Fusion is performed in a convection oven at 190–210°C for 5–10 min after the metal surface reaches 185°C. Dry film thickness is verified with an electromagnetic gauge in accordance with ISO 2178 on a minimum of five points per basket. Cured coatings are subjected to salt spray according to ISO 9227; failure typically initiates on wire ends where the thickness drops below 60 µm. The base polyamide 12 powder exhibits a melting peak near 176°C by ISO 11357-3 and a density of 1.01–1.03 g/cm³ by ISO 1183-1. The deposition efficiency on open wire surfaces reaches 65–80%, but on fine mesh sections it can decline below 40%.
| Fraction | Observed production behaviour | Test method |
|---|---|---|
| D10 10 µm | Excessive fines; gun spitting; transfer efficiency drop below 40% on fine mesh | ISO 8130-2 laser diffraction |
| D50 35–45 µm | Acceptable Faraday cage penetration; film build 80–150 µm on open wire | ISO 8130-2 |
| D90 80 µm | Edge coverage below 60 µm; poor penetration at wire intersections | ISO 8130-2 |
| D50 80–150 µm | Preferred for fluidized bed; film build 150–400 µm | ISO 8130-2 |
Fluidized bed coating of automotive seat springs and handbrake cable guides requires the metal part to be preheated to 250–350°C in a convection or infrared tunnel. The part is dipped into a fluidized bed of VESTOSINT 1301 white powder for 3–8 s. The powder sinters onto the hot surface. Wire ends with small thermal mass cool below the polyamide melting range faster than the central coil. The resulting film is thick on the heavy centre and thin at the ends. The fluidizing air is supplied at 20–40 m³/h per m² of bed area and at 25–30°C. The bed is conditioned with 0.1–0.3 wt% fumed silica to improve fluidization. Coating thickness is measured with ISO 2178 on ferrous wire and with an eddy current gauge on austenitic stainless sections. Hardness is measured as Shore D 70–78 per ISO 868. Post-fusion is conducted at 180–200°C for 2–5 min to finish sintering and reduce internal stress. The preheat window is narrow: above 350°C, the polyamide 12 degrades and yellowing appears; below 250°C, the powder does not fully coalesce and pinholes form. In production, the oven set point is adjusted to 330–340°C so that the thinnest wire reaches at least 250°C before dipping. High-voltage holiday detection at 1 kV is used on final parts; the reject rate on spring ends can reach 15% when ambient humidity exceeds 60% RH and the powder is not pre-dried. The incompatibility of moisture-laden powder with this tight temperature window makes hopper drying at 80°C for 4 h mandatory.
In liquid-applied architectural cladding systems, the VESTOSINT 1301 white powder is dispersed into an epoxy or polyurethane primer at 10–30 wt% on total solids. The powder acts as a matting agent and slip modifier. Dispersion is carried out with a high-speed dissolver at a peripheral blade speed of 5–10 m/s for 15–20 min. The dispersion temperature is kept below 40°C to prevent particle swelling. The compound is applied by air-assisted spray at 80–120 µm wet film thickness. During cure at 180–220°C for 10–15 min, the PA12 particles partially soften and flow, producing a textured finish with a roughness Rz of 10–25 µm measured per ISO 4287. The textured surface reduces damage from stone chips and improves slip resistance when tested by ASTM D4518 coefficient of friction. Abrasion resistance is evaluated by ASTM D4060 with CS-17 wheels at 1 kg load; comparative values must be generated for the specific primer. Sedimentation is a process risk. Without rheological modification, the powder settles after 48 h. The addition of 0.5–1.0 wt% fumed silica or organoclay prevents hard packing. The use of amine-functional silanes above 0.5% on total formulation is not recommended because amine groups increase moisture uptake at the polyamide interface and can reduce cure uniformity. Film clarity is not achievable above 10 wt% addition; the system is limited to opaque and matte finishes.
Flame spray coating of pipe bends, valve bodies, and tank internals uses a dedicated powder flame spray gun with an annular nozzle of 2–5 mm diameter. The VESTOSINT 1301 white powder is fed by dried compressed air at 1.0–2.0 bar. The steel surface is grit-blasted to cleanliness Sa 2.5 per ISO 8501-1. The substrate is preheated to 180–220°C before powder injection to promote melt adhesion. The powder particles melt in the flame and deposit as a continuous layer. Multiple passes are used to build 300–600 µm thickness. Inter-pass temperature must remain below 220°C to prevent surface oxidation and gloss loss. Adhesion is tested by pull-off method ISO 4624; on production equipment, values recorded after optimized blasting and preheat start at 10 MPa, but specification limits are set by the end user. For chemical plant service, the coating is exposed to dilute inorganic acids and aliphatic hydrocarbons at temperatures up to 80°C. The line-of-sight nature of flame spray leaves internal corners and narrow gaps undercoated. Manual electrostatic touch-up is required for pinhole repair. Published data for this specific configuration is limited; film thickness distribution across complex geometries must be mapped by ISO 2178 before commissioning.
Cast iron butterfly valve bodies and pump housings carry substantial thermal mass. The component is preheated in a gas-fired convection oven to 280–350°C before dipping. When the pre-heat temperature drops below 250°C, the VESTOSINT 1301 white powder does not fuse completely onto the casting surface. The first powder layer lifts away, producing pinholes and dry film thickness below 150 µm. The flanges and body walls differ in section thickness by 4–10 mm, creating a temperature spread of 30–50 K after a fixed dwell time. To bring thin sections to the minimum fusion temperature, the oven set point is 360°C for 6–9 min. This set point is close to the thermal degradation threshold of polyamide 12 at 350°C, so thermocouple profiling is mandatory. The fluidized bed is operated with air at 0.5–1.0 m/s superficial velocity. The powder particle size is verified by laser diffraction according to ISO 8130-2; typical fractions are D10 20 µm, D50 40 µm, D90 80 µm, but lot-specific values must be checked against the certificate of analysis. Coating thickness is measured with ISO 2178 magnetic gauges on cast iron. The final coating is post-cured at 180–200°C for 3–5 min. Salt spray testing according to ISO 9227 for 500 h is intended to show no red rust on flat surfaces; gate marks and sharp edges may exhibit rust if the film remains below 100 µm. The accepted preheat window is thus ±10 K around the validated set point.
| Requirement | Designation | Application notes |
|---|---|---|
| PA12 base resin | FDA 21 CFR 177.1500 | End-use migration testing required for food contact |
| Overall migration in food simulants | EU Regulation 10/2011 | Verify laurolactam-specific migration |
| Corrosion resistance | ISO 9227 NSS | Duration per final specification; 500 h often referenced |
| Particle size distribution | ISO 8130-2 | Laser diffraction; lot certificate required |
| Dry film thickness | ISO 2178 | Ferrous and cast iron substrates |
| Shore hardness | ISO 868 | D scale; 70–78 |
| Pull-off adhesion | ISO 4624 | Grit-blasted substrates; acceptance set by end user |
| Surface cleanliness | ISO 8501-1 | Sa 2.5 before thermal spray |
| REACH | Regulation (EC) 1907/2006 | No SVHC above 0.1% w/w for the formulated powder as supplied |
Textile lamination for automotive interior trim uses the VESTOSINT 1301 white powder as a heat-activated adhesive. The powder is scattered onto a polyester or polyamide nonwoven at 15–30 g/m² with a vibrating sieve or engraved roller. The web passes through an infrared or hot-air tunnel at 160–190°C for 30–60 s. The polyamide dots melt and bond to the nonwoven surface. The laminated web is immediately nipped onto a polyurethane foam backing. Particle size is specified below 80 µm to prevent strike-through. The coating weight is controlled gravimetrically to ±2 g/m². Peel strength is tested according to DIN 53357-A; values between 2–5 N/25 mm are typical but depend on substrate and lamination pressure. The powder must be stored below 30°C and 60% RH. If the powder absorbs more than 0.2 wt% moisture, the fused dots become opaque and peel strength declines by up to 30%; pre-drying at 80°C for 2–4 h restores processability. This is a well-established process. Published data for this specific configuration is limited, so end-use automotive specifications for heat aging and fogging must be qualified on the final laminate.
Competitive Evonik VESTOSINT® 1301 white Polyamide 12 prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615365186327 or mail to admin@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8615365186327
Email: admin@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
Evonik VESTOSINT® 1301 white is a polyamide 12 coating powder supplied as a white-pigmented, fine-particle solid for dry electrostatic spray and fluidized-bed application onto metallic substrates. The designation 1301 identifies a grade with a controlled top cut and melt flow characteristics intended for thin-to-medium film build without solvent handling or melt compounding. Typical published values for polyamide 12 coating powders of this class include a melting peak between 176 °C and 184 °C by ISO 3146, solid density between 1.01 g/cm³ and 1.03 g/cm³ by ISO 1183-1, and a median particle size between 50 µm and 80 µm by laser diffraction according to ISO 13320-1. The powder is produced as a dry system; as-supplied moisture is typically controlled below 0.5 wt%, and exposure to ambient air above 60% relative humidity before processing should be managed by drying or sealed hopper storage.
| Property | Typical range | Test method |
|---|---|---|
| Melting peak | 176 °C–184 °C | ISO 3146 |
| Solid density | 1.01 g/cm³–1.03 g/cm³ | ISO 1183-1 |
| Bulk density | 0.42 g/cm³–0.48 g/cm³ | ISO 60 |
| Particle size d50 | 50 µm–80 µm | ISO 13320-1 |
| Water absorption at saturation in water at 23 °C | 1.2%–1.6% | ISO 62 |
| Melt volume rate at 235 °C/2.16 kg | 20 cm³/10 min–40 cm³/10 min | ISO 1133-1 |
Fluidized-bed application of VESTOSINT® 1301 white requires the metallic substrate to be preheated above the crystalline melting range of polyamide 12. Production-scale convection ovens are commonly set between 250 °C and 300 °C, with the final part temperature at the moment of immersion controlling film thickness more directly than the oven setpoint alone. The part is lowered into a bed fluidized with compressed air at 0.5 bar to 2.0 bar through a porous plate; dip times of 2 s to 8 s typically generate fused films from 150 µm to 400 µm depending on part mass, wall thickness, and preheat temperature. Extending immersion beyond 10 s without compensating temperature reduction can produce localized melt sag and non-uniform edge coverage. Film thickness is verified by ISO 2808 using eddy-current or magnetic induction methods.
Batch-to-batch shifts in particle size distribution above 80 µm top cut can destabilize fluidization on continuous lines. To maintain cloud density, screens set to 250 µm are installed at the hopper inlet to remove agglomerates, and virgin powder is replenished after approximately 8 h of continuous running to sustain bulk density between 0.42 g/cm³ and 0.48 g/cm³. Post-fusion heating at 170 °C to 200 °C for 5 min to 15 min completes levelling. If the part temperature at dipping falls below 200 °C, incomplete sintering produces a powdery interface that fails adhesion testing under ISO 2409.
On steel substrates, grit blasting to ISO 8501-1 grade Sa 2.5 is performed before heating. A surface roughness of 30 µm to 60 µm measured as Rz supports mechanical anchoring of the fused PA12 film. Zinc phosphate or iron phosphate pretreatment according to DIN EN 12476 is specified where underfilm corrosion resistance must be verified by neutral salt spray per ISO 9227 for 500 h or longer. Omission of phosphate pretreatment reduces wet adhesion at scribe edges and is a known failure mode in dishwasher basket coating lines.
Electrostatic spray deposition applies VESTOSINT® 1301 white to cold or warm components without the large preheat mass required in fluidized-bed processes. Corona charging guns operate at 60 kV to 100 kV; tribo charging may be used where deep recesses require improved Faraday cage penetration. The applied powder layer is cured in forced-air ovens at 190 °C to 210 °C for 10 min to 20 min. Cure below 180 °C can leave unsintered particles and low interparticle coalescence, while residence above 220 °C can accelerate yellowing of the white pigmentation. Typical electrostatic film builds range from 80 µm to 250 µm and are checked by ISO 2808.
The cure window is governed by the melt viscosity of the powder. With an MVR between 20 cm³/10 min and 40 cm³/10 min at 235 °C/2.16 kg, the material flows sufficiently to form a coherent film at 200 °C without severe sag on vertical surfaces. Impact resistance after cure can be screened by ISO 6272-1; adhesion on steel by cross-cut per ISO 2409. Relative humidity above 60% in the spray environment can cause charge decay and reduce transfer efficiency, particularly with tribo guns. Compressed air used for powder delivery should have a pressure dewpoint below -40 °C to avoid moisture pickup in the feed line.
Substrate preparation for electrostatic application is identical to fluidized-bed work in terms of grit blasting and phosphate conversion. However, electrostatic lines tolerate lower part preheat, which reduces oxidation of steel substrates and lowers energy consumption. The powder should not be combined with reclaimed material from another polymer class; contamination with polyester or epoxy powder can shift gloss and produce cratering. Sieve analysis after every 4 h of continuous reclaim is used to monitor fines load. An increase in sub-20 µm fines above 10% can reduce fluidity and promote spitting at the gun tip.
Storage of VESTOSINT® 1301 white at ambient temperatures below 25 °C in sealed containers preserves the as-supplied moisture level. If sacks are opened in an environment above 60% RH, the powder should be dried for 4 h to 8 h at 60 °C to 80 °C using a desiccant or vacuum dryer. Moisture levels above 0.5 wt% can alter transfer efficiency in pneumatic feed lines and create surface voids in the fused film. The powder is not compatible with strong oxidizing acids, polar solvents, or sustained contact with boiling water; such exposures attack the amide bond and produce embrittlement. For outdoor exposure, the white titanium dioxide pigmentation provides hiding power but does not by itself confer long-term UV stabilization. Regulatory status should be confirmed through the safety data sheet for EU REACH registration of the monomer and polymer entries, and compliance with RoHS Directive 2011/65/EU heavy-metal thresholds is verified by the supplier.
When VESTOSINT® 1301 white is substituted for solvent-based nylon coatings on dishwasher baskets, the absence of volatile organic compounds eliminates solvent recovery and flash-off equipment from the layout. The powder is applied electrostatically or by fluidized bed; adhesion on steel wire racks requires grit blasting with angular grit of 0.5 mm to 1.0 mm and a surface roughness Rz of 30 µm to 60 µm. In service, polyamide 12 coatings resist detergents, rinse aids, and hot water up to 80 °C continuous; intermittent exposure to 95 °C wash cycles can cause stress relaxation and softening but not dissolution.
Compared with PA11 coating powders, VESTOSINT® 1301 white exhibits lower water absorption after 24 h immersion, typically near 0.25 wt% by ISO 62 versus PA11 levels closer to 0.3 wt%. This difference reduces dimensional swelling in long-term wet contact. The melting peak of PA12 is approximately 6 °C to 8 °C lower than that of PA11, which lowers oven setpoints and reduces energy input but restricts the upper continuous service temperature. When systems are designed for PA11 preheat profiles, the PA12 grade may require a reduction in oven setpoint to avoid excessive melt flow and film thinning on sharp edges.
Field experience on stainless steel dishwasher baskets shows that dry powder processing can achieve film thickness of 250 µm to 350 µm over welded wire intersections, provided the booth ventilation maintains air velocity between 0.4 m/s and 0.6 m/s at the powder cloud. Higher velocities increase overspray and reduce wrap-around on the back side of wire. Coated racks are cured in a box oven at 200 °C for 12 min; longer cure at 210 °C can produce slight discoloration. No primer is required when the substrate is grit-blasted and phosphated, but adhesion on smooth stainless steel without mechanical profile is insufficient under ISO 2409.
Differentiation from other VESTOSINT products is based primarily on particle size distribution, melt viscosity, and pigmentation. VESTOSINT 1301 white belongs to the fine powder range intended for thin films; higher-viscosity PA12 coating powders require oven temperatures above 220 °C but provide improved edge coverage on sharp corners. Specialty VESTOSINT grades containing carbon black or mineral reinforcement are specified for dry sliding or abrasion service, whereas the 1301 white grade is formulated for corrosion protection, detergent contact, and food-processing equipment surfaces. It does not contain glass fibers or carbon black. Published slip and wear data for this specific white-pigmented configuration are limited; block-on-ring screening per ISO 7148 is recommended before specifying the coating for continuous dry sliding. The MVR range of 20 cm³/10 min to 40 cm³/10 min at 235 °C/2.16 kg provides sufficient flow for uniform film formation at 200 °C without excessive sag on vertical surfaces. Higher-molecular-weight PA12 extrusion grades cannot be applied by powder coating because their melt viscosities remain too high for particle coalescence at the same oven conditions.
