| HS Code | 714279 |
| Product Name | Vinac DPN217 |
| Product Type | Polyvinyl acetate homopolymer emulsion |
| Carrier Medium | Water |
| Appearance | Milky white liquid |
| Total Solids Content | 55 ± 1% by weight |
| Brookfield Viscosity | 2000 cP at 25°C |
| Ph | 4.5–5.5 |
| Specific Gravity | 1.08 |
| Particle Size | 1–2 µm |
| Glass Transition Temperature | 30°C |
| Minimum Film Forming Temperature | 15°C |
| Film Properties | Clear, flexible, water-resistant when dry |
| Storage Temperature | 5–35°C |
| Shelf Life | 6 months from date of manufacture |
As an accredited Vinac DPN217 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Vinac DPN217 is supplied in 55-gallon steel drums, each containing approximately 500 pounds (227 kg) net. |
| Container Loading (20′ FCL) | 20′ FCL: Vinac DPN217 (vinyl acetate emulsion) loaded in drums, secured with dunnage, no hazardous segregation required. |
| Shipping | Vinac DPN217 is a non-hazardous aqueous vinyl acetate copolymer emulsion. It is not regulated as dangerous goods for transport, so it ships in standard drums, totes, or tankers. Protect from freezing and excessive heat. Keep containers sealed, store upright, and avoid spills with normal spill-containment procedures. |
| Storage | Store Vinac DPN217 in original, tightly sealed containers in a cool, dry area between 5°C and 40°C. Protect from freezing and direct sunlight. Keep away from heat and incompatible materials. Maintain good ventilation and proper labeling. If properly stored, shelf life is typically six months from manufacture. Stir gently before use. |
| Shelf Life | Shelf life for Vinac DPN217 is typically 12 months from manufacture when stored in sealed containers at moderate temperatures. |
Where a converter shifts from two-component polyurethane laminating adhesives to a high-solids one-shot system for dry food packaging, Vinac DPN217 is handled as a 28–32 wt% solution in an ethyl acetate/methyl ethyl ketone blend at 70/30 w/w. The make-down vessel is a jacketed stainless-steel tank with a dual-shaft disperser; the resin beads are charged into the solvent below 25 °C and mixed at 1,200–1,500 rpm for 45–60 min. Final viscosity is taken on a Brookfield RVT viscometer at 25 °C, using spindle 3 at 20 rpm; values of 800–1,200 mPa·s are typical for this concentration, and plant personnel adjust the solvent blend rather than the resin solids to maintain coating weight. A glycerol ester of stabilized rosin is introduced at 8–12 wt% of wet formulation as a tackifier for aluminium foil and corona-treated polyethylene, and 4–6 wt% acetyl tributyl citrate is used as a plasticizer to bring the heat-seal initiation temperature into the 70–85 °C range. Dibutyl phthalate is excluded because entry 30 of REACH Annex XVII restricts phthalate levels in plasticised materials used in food-contact packaging.
On a tandem laminator, the adhesive is applied to the primary web by a 180 L/cm gravure cylinder, then dried in a three-zone oven with zone temperatures of 65 °C, 75 °C, and 80 °C and air velocity of 10–15 m/s. Residual ethyl acetate is monitored with an in-line flame ionization detector and controlled below 5 mg/m²; above that threshold, the laminated reel can exhibit retained-solvent odour and peel strengths fall because the bond line remains plasticised. The secondary web is combined at a steel-rubber nip held at 70–90 °C and 3–5 bar; the resulting structure is wound at 0.5–1.0 N/mm web tension to avoid tunnelling on film grades below 20 µm. Full bond strength develops after 48 h at 35–40 °C, at which point T-peel testing according to ASTM F88/F88M-21 gives 5–8 N/15 mm for PET/PE and 3–5 N/15 mm for metallized OPP/PE. High-humidity acidic contents are outside the practical operating window; polyvinyl acetate undergoes slow hydrolysis to polyvinyl alcohol above 85% internal relative humidity, increasing extractives and reducing foil adhesion.
For food-contact status, the adhesive is formulated so that all components are permitted in FDA 21 CFR 175.105, and the dried film on metal or paper is also referenced under FDA 21 CFR 175.300 for resinous and polymeric coatings. European converters document good manufacturing practice under Regulation (EC) No 2023/2006 and verify overall migration on the finished laminate under Regulation (EU) No 10/2011 Annex II, using food simulant D1 for lipophilic dry foods and a limit of 10 mg/dm². Batch acceptance includes residual vinyl acetate monomer below 0.1 wt% and a solution colour check against a Gardner scale value of 2 or lower; published data for this specific Vinac DPN217 configuration is limited, so incoming resin lots are pre-screened by FTIR against a retained reference spectrum to detect ester carbonyl shifts from hydrolysis.
Blocking resistance in pharmaceutical lidding foil lacquers is controlled by the wax exudation rate and by the solvent release profile rather than by the PVAc backbone alone. Vinac DPN217 is dissolved at 22–26 wt% in a 60/40 w/w ethyl acetate/methyl ethyl ketone blend; a high-shear disperser running at 1,200–1,500 rpm is used for 30–45 min because undissolved polymer gels create fisheyes in reverse gravure coating. The lubricant package consists of 0.3–0.8 wt% paraffin wax with a congealing point of 52–58 °C and 1.0–1.5 wt% polyethylene wax with a drop point of 110–120 °C. This ratio permits heat seal activation without excessive surface bloom; blocking resistance is measured on a laboratory stack test at 50 °C under 5 kPa for 24 h, and acceptable lacquers release without fibre tear or visible transfer. Oleamide is limited to 0.2 wt% or less because fast migration lowers the surface energy of the printed side and can produce poor overprint adhesion in subsequent converting steps.
Application is by reverse gravure at a dry coating weight of 1.5–2.5 g/m² onto soft-temper aluminium foil of 20–25 µm thickness. The three-zone drying tunnel is set at 60 °C, 75 °C, and 90 °C, with air velocity between 8 m/s and 12 m/s; reeling at residual solvent above 5 mg/m² causes blocking on the reel and later pinholing after heat-seal. Sealing on blister lines is carried out at 160–190 °C jaw temperature, 0.5–1.0 s dwell, and 2–4 bar pressure; seal strength is verified to ASTM F88/F88M-21 and must remain above 4 N/15 mm against PVC and PVDC blister cards. At line speeds above 300 packages/min, consistent hot-tack is maintained by keeping the lacquer melting range narrow; operators monitor seal initiation with a gradient bar sealer at 5 °C increments from 130 °C to 180 °C.
For pharmaceutical and food lidding, the applied lacquer is formulated to FDA 21 CFR 175.300 and is subject to the overall migration limit of 10 mg/dm² under Regulation (EU) No 10/2011 Annex II when the lacquer becomes part of the food-contact material. If the sealed pack is used for aqueous products, simulant A is used; for fatty products, simulant D2 is run for 10 days at 40 °C. The lacquer must not contain substances classified as carcinogenic, mutagenic, or reprotoxic under Regulation (EC) No 1272/2008; vinyl acetate monomer is controlled below 0.1 wt% in the dry film. Storage of coated reels above 30 °C accelerates wax re-orientation and should be avoided unless the customer has validated a maximum reel storage interval of 3 months; published data for this specific configuration is limited, so stability is confirmed by retaining finished reels at 25 °C and 50% relative humidity.
In solvent-based gravure printing inks for surface-printed snack films, Vinac DPN217 serves as the primary film-forming binder at 12–18 wt% of the liquid ink. The resin is cut first in ethyl acetate at 30–35 wt% solids using a high-speed dissolver at 1,000–1,200 rpm; once the solution is clear, pigment dispersions are added so the final pigment-to-binder ratio lies between 0.7/1 and 1.2/1 depending on the pigment oil absorption. A nitrocellulose component at 5–8 wt% of the vehicle raises alcohol tolerance and heat resistance, while the DPN217 portion provides adhesion to corona-treated OPP and PET films with surface energy above 38 dyn/cm. Print viscosity is reduced to 15–25 s in a Zahn cup No. 2 using an 85/15 ethyl acetate/n-propyl acetate blend; solvent retention in the printed film is measured by headspace gas chromatography and kept below 5 mg/m². Drying tunnel temperatures are set between 60 °C and 80 °C with air flow of 10–15 m/s; line speed is limited by the last zone because PVAc releases high-boiling acetates more slowly than nitrocellulose. Finished prints are tested for tape adhesion according to ASTM D3359-23 and must achieve 4B or higher; scratch resistance is screened with a 500 g weighted fingernail test. For children’s snacks, the final printed article must comply with the heavy-metal limits of EN 71-3:2019+A1:2021 and the primary aromatic amine migration limits in Regulation (EU) No 10/2011 when migration from the print cannot be excluded.
Vinac DPN217 is incorporated into high-gloss overprint varnishes for sheet-fed offset folding cartons at 18–22 wt% of the wet formulation. The varnish vehicle is produced by dissolving the resin in an 80/20 w/w ethyl acetate/n-propyl acetate blend, then adding 0.5–1.0 wt% polyethylene wax with a drop point of 110–120 °C and 0.1–0.3 wt% silicone leveling agent. The DPN217 resin raises the film’s resistance to scuffing and increases adhesion to clay-coated board, while the wax controls slip at 60 °C in stacked printed cartons. Viscosity is adjusted to 25–40 s in a Zahn cup No. 3; higher viscosity causes ribbing on flexo units, and lower viscosity leads to film weight below 1.0 g/m² dry, which fails the Cox scuff test. Drying is carried out with IR pre-heating at 50 °C followed by hot-air zones at 70–90 °C; retained solvent is monitored by gas chromatography at 5 mg/m² maximum. The finished cartons are checked for gloss with a 60° glossmeter and for slip with a horizontal plane test conforming to TAPPI T 503 cm-21, targeting a coefficient of friction between 0.25 and 0.35.
For food cartons, the overprint varnish is not intended for direct food contact, but the converter must still document that migration of non-food-contact substances does not exceed the applicable overall migration limit under Regulation (EU) No 10/2011 when the board is uncoated on the food side or when migration testing is requested. Heavy metals are controlled to EN 71-3:2019+A1:2021 limits; solvents are selected to meet the emission criteria of the Solvent Emissions Directive 2010/75/EU. The varnish should not be blended with alcohol-based fountain solutions because PVAc precipitates in the presence of more than 10 wt% ethanol, causing roller build-up on the press. Published data for this specific Vinac DPN217 configuration is limited; production batches are therefore qualified by a full print trial at 10,000 sheets before commercial release.
For spray-applied nitrocellulose wood lacquers on pre-assembled furniture, Vinac DPN217 acts as a plasticising co-binder at 10–15 wt% of the total non-volatile resin. The lacquer is compounded by dissolving nitrocellulose with plasticiser such as dioctyl adipate and then adding the DPN217 solution to a final solids content of 25–30 wt% in an 85/15 ethyl acetate/MEK blend; the PVAc improves elongation and reduces cold-check cracking after five cycles from -20 °C to 50 °C. Application is by air-assisted airless spray at 2–4 bar fluid pressure and 0.8–1.2 bar air pressure; film thickness is controlled at 80–120 µm wet, yielding 25–35 µm dry. Drying follows a forced-air schedule of 10 min at 25 °C followed by 30 min at 60 °C; the first sanding is performed after 24 h. The finished coating is evaluated by the cold-check cycle described in ASTM D1211-22, and no cracks are acceptable after 10 cycles. The addition of mineral spirits above 5 wt% of the solvent blend causes resin separation and must be avoided. Compliance is governed by the national VOC limits for architectural and furniture coatings, typically 420 g/L for clear topcoats in North America; the product is not formulated for direct food contact or toy surface coatings unless the specific formulation passes EN 71-3:2019+A1:2021.
Envelope flap remoistenable adhesives are formulated as solvent-based systems when extended slip and low blocking are required on high-speed inserting lines. DPN217 at 15–20 wt% is cut in ethyl acetate, then plasticised with 10–15 phr acetyl tributyl citrate; dextrin is dispersed at 25–35 wt% of the dry film to provide water remoistenability. The adhesive is applied at 10–14 g/m² dry weight by a roller coater heated to 40–50 °C, then dried in a hot-air tunnel at 65–80 °C. Finished flaps are conditioned at 50% relative humidity for 24 h before testing; remoistening with 10 µL water and sealing under 1 kg for 10 s gives fibre-tearing bonds to standard envelope paper. The product must not be used in direct contact with aqueous or fatty foods unless the specific formulation is shown to comply with FDA 21 CFR 176.170 for paper components; solvent selection must respect the emission limits in Directive 2010/75/EU. Long-term dry blocking resistance is checked at 40 °C and 60% relative humidity for 7 days.
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Vinac DPN217 is a solid polyvinyl acetate homopolymer supplied as clear, free-flowing beads with a nominal weight-average molecular weight in the 200 000 g/mol to 250 000 g/mol range when measured by size-exclusion chromatography in tetrahydrofuran against polystyrene calibrants under ISO 16014-3:2019. The grade is part of the solvent-soluble Vinac PVAc series and is differentiated from lower-molecular-weight B-series products by a higher solution viscosity per unit solids and stronger cohesive film formation after solvent evaporation. Published lot data for DPN217 typically report a glass transition temperature of 28 °C to 32 °C by differential scanning calorimetry under ASTM E1356-08(2014), a density of 1.18 g/cm³ to 1.20 g/cm³ by ASTM D792-20, and an acid number below 1.0 mg KOH/g by ASTM D1386-15. The homopolymer is insoluble in water and soluble in ketones, esters, aromatic hydrocarbons, and chlorinated solvents; final solution viscosity is strongly solvent-dependent and should be verified on a Brookfield LVT viscometer under ASTM D2196-20 after each solvent adjustment.
| Property | Method | Typical range |
|---|---|---|
| Glass transition temperature | ASTM E1356-08(2014) | 28 °C–32 °C |
| Density | ASTM D792-20 | 1.18 g/cm³–1.20 g/cm³ |
| Acid number | ASTM D1386-15 | < 1.0 mg KOH/g |
| Ash content | ASTM D5630-22 | < 0.1 wt% |
| Volatile content | ASTM D2369-20 | < 0.5 wt% |
| Weight-average molecular weight | ISO 16014-3:2019 | 200 000 g/mol–250 000 g/mol |
| Softening point | ASTM E28-18 | 170 °C–200 °C |
| Solution viscosity | ASTM D2196-20 | 180 mPa·s–260 mPa·s at 10 wt% in ethyl acetate |
Under normal closed storage at 20 °C to 30 °C, the resin remains free-flowing, but prolonged exposure to relative humidity above 60% can increase volatile content and produce solution turbidity in ketone-rich blends. Pre-drying in a circulating-air oven at 40 °C for 2 h is recommended for material stored in opened bags under humid conditions. Formulation pH should remain below 8.0; prolonged contact with strong alkaline additives can partially hydrolyse acetate groups to hydroxyl functionality, shifting solubility and reducing film clarity.
Dissolution of DPN217 is not a simple low-shear operation. In 2 000 L stainless steel mixing vessels with top-entry dispersers, controlled resin addition over a 45 min period reduces batch-to-batch viscosity variation to less than 10%; fast addition creates transient high-solids regions that raise motor load and can leave solvated gel particles. A solvent pre-blend temperature of 25 °C to 35 °C is preferred; temperatures below 15 °C slow dissolution and require an additional 30 min of hold time after the solids appear fully incorporated.
In high-solids gravure inks and overprint varnishes, DPN217 is typically dissolved at 20 wt% to 30 wt% solids in a ketone/ester blend such as methyl ethyl ketone, ethyl acetate, and isopropanol. The operational viscosity target on an 8-station rotogravure press is commonly 18 s to 25 s on a Zahn #2 cup at 25 °C; above 25 s, ink transfer at cylinder engraving depths of 50 µm to 70 µm becomes non-uniform. Lot-to-lot variation in DPN217 molecular weight and moisture content can shift attainable solids content by 2 wt% to 4 wt% at constant viscosity. If the solution exceeds 500 mPa·s at 25 °C under ASTM D2196-20, addition of 5 wt% to 8 wt% methyl ethyl ketone relative to total solvent usually restores printable Zahn viscosity without lowering final film properties. High-shear dispersion with a Cowles blade at 1 500 rpm to 2 000 rpm for 20 min to 30 min should keep batch temperature below 50 °C; higher temperatures accelerate solvent loss and may form skinning on the mixer shaft. Filtration through a 50 µm bag filter removes gels and undispersed resin fines that can streak at press speeds above 120 m/min.
When DPN217 is formulated into a nitrocellulose-based overprint varnish for corona-treated LDPE, the addition level is normally 5 wt% to 12 wt% of total solution. Wetting tension of the film should be at least 38 dyn/cm by ASTM D2578-23, and optical clarity is measured as haze below 5% under ASTM D1003-21. Higher DPN217 additions above 15 wt% improve alcohol resistance but reduce rub resistance because the homopolymer film remains thermoplastic; formulators therefore balance DPN217 with nitrocellulose at a 1:3 to 1:5 DPN217-to-nitrocellulose ratio by nonvolatile weight.
DPN217 is generally compatible with nitrocellulose, ketone resins, and maleic-modified rosin esters, but compatibility with high-acid-number acrylics can decrease as the acid number of the co-resin rises above 15 mg KOH/g. Solution haze is measured by ASTM D1003-21, and a haze value above 10% at 25 °C after 24 h storage indicates incompatible resin fractions. This limit is lower than for low-Mw B-series grades, which tolerate higher-acid-number co-resins because lower chain entanglement reduces phase separation at equal solids.
The substitution of DPN217 for Vinac B-100 or B-15 in solvent-borne laminating adhesives increases green bond strength and ultimate T-peel values on PET/PE structures. The following representative ranges are extracted from supplier technical literature and production-scale dry-lamination trials; they are not specification limits and must be confirmed on the selected substrate.
| Grade | Weight-average molecular weight | 10 wt% solution viscosity in ethyl acetate at 25 °C | T-peel strength after 24 h under ASTM D903-98(2017) | Solids limit at 20 s Zahn #2 |
|---|---|---|---|---|
| DPN217 | 200 000 g/mol–250 000 g/mol | 180 mPa·s–260 mPa·s | 6 N/15 mm–9 N/15 mm | 28 wt%–32 wt% |
| B-100 | 100 000 g/mol–130 000 g/mol | 80 mPa·s–120 mPa·s | 4 N/15 mm–6 N/15 mm | 38 wt%–42 wt% |
| B-15 | 15 000 g/mol–25 000 g/mol | 10 mPa·s–20 mPa·s | 1 N/15 mm–2 N/15 mm | 55 wt%–60 wt% |
For plasticized films, dibutyl phthalate and triacetin at 5 phr to 15 phr reduce modulus below 50 MPa when measured by ISO 527-2:2012 on cast films cured for 7 d at 23 °C and 50% RH. Without plasticizer, high-molecular-weight DPN217 films retain modulus above 200 MPa. Long-chain polyester plasticizers show lower migration into polyolefin substrates after 14 d at 60 °C, but published data for this specific configuration is limited and requires confirmation by extraction methods such as ASTM D5227-13.
On high-speed dry laminators running 80 m/min to 150 m/min, the drying tunnel residence time can fall to 4 s to 6 s. DPN217 retains solvent more strongly than low-Mw PVAc because of its longer chain entanglements; residual ethyl acetate above 5 mg/m² after drying can produce odour and reduce interlayer adhesion. Gravimetric or headspace residual solvent testing should be carried out under ASTM D4526-96(2020) or an equivalent validated method. If residual solvent exceeds 5 mg/m², reducing line speed by 10% to 15% or increasing drying-tunnel zone temperature from 80 °C to 100 °C is required before further roll compression.
Heat-seal coatings based on DPN217 are applied from solution to aluminium foil or corona-treated LDPE, and the high molecular weight raises hot-tack strength but requires activation temperatures above 85 °C. Bench-scale sealing with 25 µm to 35 µm dry film and seal pressure of 300 kPa to 500 kPa for 0.5 s to 1.0 s commonly yields seal strengths above 3 N/15 mm at 110 °C when measured under ASTM F88/F88M-23. Below 85 °C, seal strength and hot-tack are unreliable unless a high-solids plasticizer or tackifier is present. Compared with vinyl acetate-ethylene dispersion coatings, DPN217 eliminates freeze-thaw instability but requires solvent-handling controls and thermal oxidation of drying-tunnel VOCs.
Indirect food-contact status for DPN217 is not an inherent resin property. In adhesive applications separated from food by a functional barrier, the final formulation may be considered under 21 CFR 175.105, provided that residual vinyl acetate monomer and total extractives are below migration limits for the intended conditions of use. DPN217 is not designed for direct food contact, and published data for this specific configuration is limited for fatty-food simulants at temperatures above 40 °C. EU REACH and RoHS Directive 2011/65/EU status should be verified against the current supplier safety data sheet, particularly for electronic assemblies where halogen-free or restricted-substance declarations are required.
