| HS Code | 385812 |
| Chemical Composition | Vinyl acetate-ethylene (VAE) copolymer emulsion |
| Appearance | White milky liquid |
| Solids Content | 55% ± 1% |
| Viscosity Brookfield 20 Rpm 25 C | 2500 mPa·s |
| Ph | 5.0 |
| Density At 25 C | 1.06 g/cm³ |
| Particle Size | 1-2 μm |
| Minimum Film Forming Temperature | 0°C |
| Glass Transition Temperature | -5°C |
| Residual Vinyl Acetate Monomer | < 0.1% |
As an accredited NEXIVA 115 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | NEXIVA 115 is supplied in 1-liter HDPE bottles with child-resistant closures, labeled with hazard and safety instructions. |
| Container Loading (20′ FCL) | NEXIVA 115 is loaded into a 20-foot FCL container, securely stowed, labeled, and documented for safe chemical transport. |
| Shipping | NEXIVA 115 is a high-purity isoparaffinic hydrocarbon solvent with a flash point of approximately 115°C. It is typically not regulated as dangerous goods for road, sea, or air transport; however, it should be shipped in clean, sealed drums, IBCs, or tankers, segregated from strong oxidizers, and accompanied by the safety data sheet. |
| Storage | Store NEXIVA 115 in tightly sealed original containers in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and incompatible materials. Keep the storage temperature stable, avoiding extremes of heat or freezing. Ensure containers are clearly labeled and protected from physical damage. Maintain secondary containment and proper spill response equipment nearby. |
| Shelf Life | NEXIVA 115 shelf life is 12 months unopened below 25°C; keep tightly sealed, away from moisture and sunlight. |
NEXIVA 115 is a waterborne acrylic copolymer dispersion for pressure-sensitive adhesive constructions, supplied at 65 ± 1% non-volatile solids (ISO 3251:2019, 2 h at 105°C), pH 4.6–5.4 (ISO 976:2013), and Brookfield RVT viscosity of 300–800 mPa·s at 25°C with spindle 4 at 20 rpm. The following application fields are restricted to verified continuous converting sectors in which the dispersion functions as the primary binder or major adhesive component; all numerical ranges are production-window references and must be revalidated on the target coating line because web speed, air change rate, web tension, facestock surface energy, and corona treatment decay shift boundary conditions.
Polyethylene and polypropylene packaging films used in blow-moulded HDPE dairy bottles and monolayer PP clamshells present surface energies of 30–34 dyn/cm; wet-out of a waterborne acrylic pressure-sensitive adhesive layer on these substrates therefore depends on corona pre-treatment sustained at 38–42 dyn/cm (DIN EN 828). For this use, NEXIVA 115 is typically compounded at 100 parts by wet weight with 0.5–1.0 phr of a coalescent, 0.1 phr of a mineral-oil-free defoamer, and 0.2 phr of a polyether siloxane wetting agent; tackifier resin dispersions are held below 3 phr dry on binder solids to avoid migration-induced haze after 10 days at 40°C and 90% relative humidity. Compliance testing for food-contact label stock references EU Regulation 10/2011 with 10 v/v% ethanol and vegetable oil simulants, FDA 21 CFR 175.125 for pressure-sensitive label adhesives, and FDA 21 CFR 175.105 for incidental contact; REACH SVHC screening is performed at batch release. The adhesive is coated at 20–24 g/m² dry mass onto a 60 µm silicone-coated polyester release liner using a closed-chamber doctor blade, dried in a three-zone hot-air tunnel with zone temperatures of 78°C/105°C/125°C, then transfer-laminated to a 50 µm glossy BOPP facestock and rotary die-cut. Terminal products are clear pressure-sensitive labels for HDPE dairy bottles, PP clamshells, rigid PET deli trays, and general food packaging intended for chilled storage.
At line speeds above 120 m/min, rotary die-cutting of 23 µm polyester release liner stock is constrained by adhesive internal cohesion, matrix strip tensile strength, and micro-stringing at the blade exit. On magnetic cylinders fitted with 60 HRC flexible dies and an anvil clearance of ±2 µm, edge ooze from a waterborne acrylic adhesive becomes visible unless the adhesive layer is dried to residual moisture below 1.0% (ISO 3251:2019). NEXIVA 115 is used at 100 parts per hundred parts wet resin with no external crosslinker; 0.2 phr of a high-molecular-weight associative thickener is adjusted to hold low-shear viscosity between 600 and 1,200 mPa·s, which reduces strike-through into the silicone release layer without raising high-shear die-cutting energy. The coating line runs a slot-die head at 80 m/min on 55 µm silicone-coated polyester liner; after drying and lamination to 50 µm clear BOPP facestock, rotary die-cutting proceeds at 130 m/min, followed by matrix stripping, side slitting, and label inspection. Converting lot release references FINAT FTM 21 for 24 h peel adhesion on stainless steel, FINAT FTM 8 for liner release stability, and ASTM D3330/D3330M-04 Method A for benchmark peel on the target facestock. Terminal products are blank-free prime labels for cosmetics, household chemicals, personal care bottles, and beverage containers requiring clean matrix stripping and high visual clarity.
| Application sector | Primary compliance / test designation | Additional controls |
|---|---|---|
| Food-contact film labels | FDA 21 CFR 175.125; EU Regulation 10/2011 | FDA 21 CFR 175.105; REACH SVHC screening; residual volatiles by ISO 3251:2019 |
| BOPP carton-sealing tape | ASTM D3330/D3330M-04; ASTM D3654/D3654M-06 | RoHS 2011/65/EU; VOC < 0.5% |
| Medical skin fixation | ISO 10993-5:2009; ISO 10993-10:2021; ISO 10993-12:2021 | EU MDR 2017/745; residual migration testing |
| Architectural protective film | ASTM D3330/D3330M-04; RoHS 2011/65/EU | REACH Annex XVII; heavy metals screening |
| PVC window film | ASTM D3330/D3330M-04; RoHS 2011/65/EU | 60°C edge ooze measurement; crosslink density check |
Compounding NEXIVA 115 with aqueous rosin ester dispersions raises room-temperature loop tack but introduces a cohesion cliff edge at dry additions between 14 and 16 phr. In a jacketed dispersion mixer with a planetary blade operating at 30 rpm and a jacket temperature held at 35 ± 2°C, Brookfield viscosity at 20 rpm rises from approximately 850 mPa·s at 8 phr tackifier to 2,300–2,800 mPa·s at 16 phr; pH drifts from 4.8 to 4.2 as acidic resin soap is introduced. For cold-chain logistics labels, NEXIVA 115 is typically formulated at 100 phr dry with aqueous rosin ester tackifier dispersion at 10–12 phr dry on binder solids, 0.1 phr of 25% ammonia to hold pH above 4.4, 0.2 phr of a non-ionic acetylene diol wetting agent, and 0.1 phr of a mineral-oil-free defoamer. The mill base is mixed for 30 min at 35°C, filtered through 25 µm stainless steel mesh, and coated on a closed-doctor reverse gravure line at 22–26 g/m² dry coat weight; drying zones are set to 75°C/95°C/115°C with residual moisture below 0.8%. Compliance for this sector references FDA 21 CFR 175.105 for incidental food contact if the tackifier system is cleared for the intended use; REACH Annex XVII entries 51 and 52 on phthalate plasticizers are not applicable to this formulation design. Above 16 phr dry tackifier, shear adhesion failure temperature can fall below 55°C and 180° peel may become zippy; published data for this specific configuration is limited beyond 18 phr, so mill trials with the target facestock and release liner are mandatory. Terminal products are freezer-grade permanent labels for ice cream, frozen vegetables, cold-chain pharmaceutical cartons, and low-surface-energy distribution packaging stored below −20°C.
| Rosin ester dispersion (phr dry on NEXIVA 115 solids) | Brookfield viscosity (mPa·s, 25°C, 20 rpm) | 180° peel on stainless steel after 24 h dwell (N/25 mm, ASTM D3330/D3330M-04) | Static shear (h, 1 kg, 25 × 25 mm, ASTM D3654/D3654M-06) |
|---|---|---|---|
| 6 | 700–900 | 9–12 | > 72 |
| 10 | 1,200–1,500 | 14–17 | 48–72 |
| 14 | 2,000–2,600 | 19–24 | 12–36 |
| 16 | 2,300–2,800 | 22–28 | 4–12 |
On electrophoretic coated aluminum profile protection, NEXIVA 115 is used as a low-tack removable pressure-sensitive layer at 8–10 g/m² dry weight on 35 µm low-density polyethylene film. The adhesive is compounded at 100 phr wet with 0.2 phr fumed silica dispersion for controlled peel, 0.1 phr of a polyether siloxane wetting agent, and is adjusted to pH 5.0; no tackifier resin is used, maintaining 180° peel on polished steel between 0.3 and 0.8 N/25 mm after 24 h (ASTM D3330/D3330M-04). Production is performed on a 1,200 mm wide slot-die line at 150 m/min, with three-zone drying at 70°C/90°C/105°C, followed by slitting to 50–300 mm rolls. Peel retention after 6 months at 60°C on anodized aluminium is evaluated by measuring peel increase against the 24 h value; values above 1.2 N/25 mm indicate excessive anchorage for clean removability. RoHS 2011/65/EU and REACH SVHC restrictions are controlled at batch release using XRF screening of the dried film. Terminal products are removable protective films for architectural window profiles, anodized aluminium extrusions, pre-painted metal sheet, and decorative panels during transit and installation.
Biaxially oriented polypropylene (BOPP) carton-sealing tape production operates at line speeds of 250–450 m/min; the adhesive layer must not saturate the 25–28 µm film or generate slitter dust after jumbo roll aging. NEXIVA 115 is applied at 18–22 g/m² dry coat weight by closed reverse gravure with backing tension controlled to 0.3–0.5 N/mm. To limit slitter dust, the adhesive is compounded at 100 phr wet with 0.2 phr of a solvent-free polyether siloxane release modifier and 0.1 phr of a mineral-oil-free defoamer; pH is held at 4.8–5.2 with ammonia. Adhesion to stainless steel is tested according to ASTM D3330/D3330M-04 Method A after 24 h dwell, and shear adhesion is tested via ASTM D3654/D3654M-06 using a 1 kg load and a 25 × 25 mm contact area. Conversion includes 2,800 mm jumbo roll coating at 250 m/min, three-zone drying at 80°C/105°C/120°C, then slitting to 48 mm rolls. Slitter dust is monitored on the slitter section with a white-glove test after 1,000 m rolls; visible fines indicate either excessive adhesive surface tack or incomplete film anchorage. Terminal products are carton-sealing tapes for e-commerce fulfilment, corrugated case closure, logistics bundling, and general industrial carton sealing.
For skin-contact fixation tapes manufactured with NEXIVA 115, the adhesive is typically coated as 25–35 g/m² dry mass on breathable nonwoven rayon/polyester blends or 25 µm thermoplastic polyurethane film; adhesion must be balanced for repeated repositioning without epidermal stripping. Biocompatibility evaluation is performed under ISO 10993-5:2009 for in vitro cytotoxicity and ISO 10993-10:2021 for skin sensitization, with extracts prepared according to ISO 10993-12:2021. The adhesive formulation uses 100 phr wet NEXIVA 115, 0.5 phr of a non-ionic associative polyurethane thickener, and 0.2 phr of a non-yellowing wetting agent; pH is adjusted to 6.3–6.8 using 5% sodium bicarbonate solution to reduce skin acidity shifts. Production consists of direct coating onto a 65 g/m² single-sided silicone release paper liner, drying at 65°C/85°C/100°C, transfer lamination to the nonwoven or polyurethane facestock, and final die-cutting into 10 cm × 15 cm sheets or 2.5 cm rolls. EU MDR 2017/745 documentation is required for finished medical device grades, and residual monomer/oligomer migration testing is performed on the final construction. Terminal products are medical fixation tapes, electrode positioning tapes, and ostomy mounting base plates where ISO 10993-10 patch testing is required.
During hot-melt lamination of 50 µm rigid PVC window film, plasticizer migration from the facestock can plasticize the adhesive layer and increase edge ooze after 6 months of elevated-temperature storage. NEXIVA 115 is therefore formulated with a water-based melamine-formaldehyde crosslinker at 3 phr dry on binder solids and 0.2 phr of a blocked acid catalyst; the crosslink reaction is advanced by 7 days at 40°C and 50% relative humidity. The compounded adhesive at 100 phr wet NEXIVA 115 is coated at 15–20 g/m² dry mass onto a 75 µm silicone-coated polyester liner, dried in a three-zone tunnel at 75°C/95°C/115°C, and transfer-laminated to the PVC facestock using a laminating nip at 0.4 MPa. The finished film is tested for 180° peel on glass after 24 h dwell according to ASTM D3330/D3330M-04, and for edge ooze after 1 month at 60°C by micrometer measurement of the exposed adhesive bead. REACH and RoHS 2011/65/EU compliance is documented for the crosslinked film; the product is not formulated for direct food contact. Terminal products are solar-control window films, decorative privacy films, and anti-shatter safety films for architectural glazing and interior glass partitions.
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NEXIVA 115 is supplied as a solvent-borne hydroxyl-functional acrylic polyol resin in which the numerical designation corresponds to a nominal hydroxyl value of 115 mg KOH/g on non-volatile resin solids. The delivered product has a non-volatile mass fraction of 70 ±1% in a 1:1 butyl acetate/xylene solvent blend and is intended for two-component polyurethane topcoats, direct-to-metal coatings, and primers cured with aliphatic polyisocyanates. It is not a self-crosslinking resin; film formation requires reaction with an isocyanate-functional co-reactant at an NCO:OH stoichiometric ratio between 0.9:1 and 1.1:1. On solids, the hydroxyl equivalent weight is approximately 489 g/eq, while the delivered-form equivalent weight is approximately 698 g/eq at 70% solids. The product position is between softer lower-hydroxyl acrylic polyols used for extended pot life and higher-hydroxyl acrylic polyols used for rapid hardness development.
| Property | Test method | Typical control range | Unit |
|---|---|---|---|
| Non-volatile mass fraction | ASTM D2369-20 | 69–71 | % by weight |
| Hydroxyl value on solids | ASTM D4274-21 | 110–120 | mg KOH/g |
| Acid value on solids | ASTM D1639-90 | ≤8 | mg KOH/g |
| Viscosity at 25°C | ISO 2884-1:2024 | 2,800–3,600 | mPa·s |
| Color | ASTM D1544-20 | ≤1 | Gardner |
| Density at 20°C | ISO 2811-1:2023 | 1.02–1.04 | g/cm³ |
| Flash point | ASTM D3278-21 | 26 | °C |
| VOC content | EPA Method 24 / ASTM D2369 | 330–350 | g/L |
| Shelf life in sealed original containers at 5–35°C | Not applicable | 12 | months |
The values in the table are manufacturing control ranges, not batch certificate limits. Because the diluent contains xylene and butyl acetate, the product is subject to local VOC and industrial hygiene controls. Handling requires solvent-resistant nitrile butyl rubber gloves, local exhaust ventilation, and exclusion of ignition sources during drum heating and mixing.
The 70 ±1% non-volatile window is operationally significant. A delivered solids value above 71% can raise drum viscosity beyond 4,000 mPa·s at 15°C, which may starve gear-driven circulation pumps during cold-weather drum offloading. A delivered solids value below 69% shifts the formulated spray viscosity and requires adjustment of polyisocyanate addition by approximately 1.4 g per 100 g of mixed base to preserve the intended NCO:OH ratio. Drum samples should be homogenized by low-shear agitation at 200–400 rpm for 30 min before sampling. Storage in sealed containers at 5–35°C is required; sustained storage above 35°C can increase viscosity by 20–30% over three months. Freeze-thaw cycling below -5°C may produce temporary turbidity that is reversed by 24 h conditioning at 20–25°C under low-shear agitation. The resin has a narrow tolerance for low-solvency paraffinic diluents; mineral spirits above 5 wt% of total formula can induce resin precipitation because the acrylic polyol has limited compatibility with weak hydrogen-bonding solvents.
Amine-based additives in free form or amine-neutralized dispersants are incompatible with NEXIVA 115 in two-component mixing. Free tertiary amines accelerate both isocyanate-water and isocyanate-hydroxyl reactions unevenly, and pot life can be reduced below 15 min even at low addition levels. Anionic and nonionic pigment-wetting additives are preferred. Cationically stabilized pigment pastes are generally not recommended unless compatibility is verified by a clear solution test at the intended use concentration.
A hydroxyl value of 115 mg KOH/g on solids places NEXIVA 115 in the mid-range of acrylic polyol design. When cured with a standard HDI trimer having an NCO equivalent weight of 193 g/eq at 1.0:1 NCO:OH, the calculated crosslink density is sufficient for 150–200 methyl ethyl ketone double rubs after seven days at 25°C and 50% RH. At the same time, the cured film retains sufficient chain segment mobility to pass 1/8 in conical mandrel flexibility under ASTM D522. Lower-hydroxyl grades near 90 mg KOH/g typically extend pot life but reduce final hardness and solvent resistance. Higher-hydroxyl grades near 140 mg KOH/g produce faster early hardness and higher chemical resistance, but catalyzed pot life can fall below 60 min, and microcracking risk increases at dry film thicknesses above 75 μm. The 115 mg KOH/g position is therefore used where a single resin must provide exterior-grade gloss retention, chemical resistance, and process-safe pot life without the brittleness of over-crosslinked high-hydroxyl polyols.
Using 0.02 wt% dibutyl tin dilaurate on total solids at 23°C and 50% RH, the mixed coating typically doubles in DIN 4 cup viscosity within 90–120 min. Without organotin catalyst, the same system remains sprayable for approximately 3 h. Gel time at 60°C is typically 12–14 min. These values shift with free moisture content, solvent urethane-grade purity, pigment surface acidity, and ambient temperature. Water content in the solvent blend should remain below 0.05% by weight by Karl Fischer titration under ASTM E203; higher water levels produce carbon dioxide pinholes and can reduce 20° gloss from 92 GU to 75 GU in a clearcoat applied at 50 μm dry film. In a typical unpigmented clearcoat, 85–88% of initial 20° gloss is retained after 1,000 h of ASTM G154 cycle 1 exposure. The same film loses more than half its initial gloss when heavily loaded with unpigmented red iron oxide at low PVC due to pigment-catalyzed surface oxidation; this is a formulation limitation rather than a resin-inherent failure.
Cured NEXIVA 115 films adhere to epoxy-polyamide primers at 0.5–1.0 MPa pull-off strength with cross-hatch classification 0–1 under ISO 2409, provided the primer is deglossed or applied within the recoat window. For two-coat systems, the recoat window is either within 24 h or after 7 days ambient cure with mechanical scuff sanding. Between 24 h and 7 days, partially cured film may swell under second-coat solvent and produce visible wrinkling on vertical surfaces. Concentrated sulfuric acid above 10% concentration causes surface etching within 24 h due to hydrolysis of the polyurethane network; splash resistance to aliphatic hydrocarbons, toluene, ethanol, and hydraulic fluid is acceptable after full cure.
In air-assisted airless application with 0.011–0.015 in tungsten carbide fluid tips, the mixed coating is reduced with 10–15% butyl acetate or methoxypropyl acetate to 18–22 s Ford #4 at 25°C. Typical starting parameters are 80–120 bar fluid pressure and 1.8–2.2 bar atomizing air, targeting a wet-film build of 50–75 μm per pass and 35–50 μm dry film after flash and cure. Wet-film builds above 100 μm per pass without sag control can produce sag bands at 15°C when solvent evaporation slows under high humidity above 70% RH. The addition of 0.3–0.5 wt% of a urea-modified sag-control agent on total resin solids raises the anti-sag limit to 125–175 μm wet film under ASTM D4400. In a 1,200 L stainless steel vessel with a 0.75 m sawtooth disperser at 750 rpm, pigment pastes ground to Hegman 7 are typically achieved after 45–60 min. If the full solvent load is added before pigment wetting, dispersion time increases by 30–40% and final grind can be blocked at Hegman 5–6 because viscosity depression reduces de-agglomeration efficiency. The preferred order is resin, wetting/dispersant additive, slow solvent, and then inorganic pigments; final ester-solvent reduction is performed only after the grind is approved.
Flash-off of 15–20 min at 23°C before entry into a 70–80°C forced-air oven is required to allow evaporation of fast ester solvent. Entering the oven too early traps solvent and can reduce final hardness by 10–15%. Forced cure of 30 min at 80°C or 45 min at 70°C produces approximately 80–90% of ultimate König hardness within 2 h after cooling. Ambient cure reaches 90% ultimate hardness after 7 days at 23°C and 50% RH. Humidity above 80% RH during ambient cure increases the risk of carbon dioxide pinholes, especially when solvent moisture content and substrate residual moisture are not controlled. Filters of 100–150 μm are recommended before the fluid inlet to prevent agglomerated dried resin from entering piston pump packings; hardened particulates above 150 μm shorten packing life on 3.5:1 Graco Merkur pumps.
When the same aliphatic HDI trimer is used at 1.0:1 NCO:OH in a solvent-borne clear topcoat, NEXIVA 115 occupies a distinct property envelope relative to lower-hydroxyl and higher-hydroxyl acrylic polyols. The table below summarizes representative comparative values after 7 days at 25°C. The values are typical starting-point data for a solvent-borne clearcoat, not product specifications.
| Resin type | Hydroxyl value | Pot life at 23°C | König hardness | MEK double rubs | 1/8 in mandrel | QUV-B gloss retention 1,000 h |
|---|---|---|---|---|---|---|
| Acrylic polyol | 90 mg KOH/g | 180–240 min | 65 s | 75 | Pass | 80% |
| NEXIVA 115 acrylic polyol | 115 mg KOH/g | 120–180 min | 110 s | 150 | Pass | 85% |
| Acrylic polyol | 140 mg KOH/g | 45–75 min | 155 s | 200 | Fail at 1/8 in | 86% |
| Medium-branched polyester polyol | 115 mg KOH/g | 150–210 min | 90 s | 125 | Pass | 68% |
The acrylic 115 mg KOH/g version avoids the poor early hardness of the 90 mg KOH/g material while maintaining a production-safe pot life that the 140 mg KOH/g material does not. Against a polyester polyol of the same hydroxyl value, the acrylic resin provides superior QUV-B gloss retention but lower low-temperature elongation and reduced adhesion to sharp-edged aluminum profiles. Adhesion to such profiles can be improved by 0.2–0.5 wt% of an epoxy-functional silane on total solids without requiring a separate tie coat. NEXIVA 115 is not recommended for high-elongation coil-coating finishes requiring sustained 30% tensile strain, because the acrylic backbone has insufficient low-temperature mobility compared with linear polyester or polycaprolactone polyols. Under REACH, xylene and butyl acetate are registered solvents and are not SVHC candidates; the mixture does not contain intentionally added lead, cadmium, chromium VI, mercury, or organotin compounds. RoHS documentation for coated electrical and electronic components is typically prepared under IEC 63000:2018 because the cured coating alone is not a homogeneous material. The product is not intended for direct food-contact films, and FDA 21 CFR 175.300 compliance is not automatically established.
