| HS Code | 545803 |
| Chemical Composition | Vinyl acetate-ethylene copolymer dispersion |
| Appearance | White, low-viscosity aqueous dispersion |
| Solid Content Percent | 53 ± 1 |
| Viscosity Mpa S | 5000 - 9000 (Brookfield, 23°C) |
| Ph | 4.0 - 5.0 |
| Glass Transition Temperature C | -5 |
| Minimum Film Formation Temperature C | 0 |
| Mean Particle Size Um | 1 - 3 |
| Density G Cm3 | 1.06 |
| Stabilizer Type | Polyvinyl alcohol |
As an accredited VINNAPAS 4115 N factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | VINNAPAS 4115 N is packaged in 200 kg drums or 1,000 kg IBC containers, ensuring safe delivery and easy handling. |
| Container Loading (20′ FCL) | 20' FCL: VINNAPAS 4115 N loaded on pallets, shrink-wrapped, secured, protected from moisture, ensuring safe transport. |
| Shipping | VINNAPAS 4115 N is shipped as a non-hazardous aqueous polymer dispersion in drums, IBCs, or bulk tankers. Protect from freezing, excessive heat, and contamination. Store between 5–35°C in sealed containers. Transport per standard non-regulated chemical guidelines, with proper labeling and ventilation to prevent pressure buildup. |
| Storage | Store VINNAPAS 4115 N in original, tightly sealed containers in a cool, dry, well-ventilated area. Protect from frost, direct sunlight, and temperatures above 35°C. Ideal storage range is 5–35°C. Avoid prolonged storage in partially filled containers. Stir gently before use. Typical shelf life is six months from delivery if stored correctly. |
| Shelf Life | Shelf life is approximately 6 months from date of delivery when stored in original, sealed containers at recommended temperatures. |
In two-component cementitious tile adhesives specified for porcelain stoneware with capillary water absorption below 0.5% by mass and for glass-fibre-reinforced gypsum board, VINNAPAS 4115 N is introduced as the vinyl acetate-ethylene copolymer dispersion component at a controlled dry-polymer-to-cement ratio between 0.08 and 0.15. Because the dispersion contains approximately 55% solids by mass, this translates to 14.5–27.3 parts of VINNAPAS 4115 N per 100 parts of cement. The VAE copolymer phase with a nominal glass transition temperature of −15 °C retains deformability under normal service conditions, supporting the S1 deformability classification without post-cure plasticiser migration. Compliance is assessed under ISO 13007-1:2014 for a C2 TE S1 cementitious adhesive; the additional test method EN 1348 is used to measure tensile adhesion strength after water immersion, heat ageing, and freeze-thaw cycling. In production, the liquid component is pre-mixed with the gauging water in a paddle mixer at 300 min⁻¹ for 60 s, after which the dry-mix powder is added and mixed at 600 min⁻¹ for 180 s. The wet mortar is slaked for 5 min and remixed at 300 min⁻¹ for 30 s before application. Field observations from forced-action mixers operating below 300 min⁻¹ show polymer-rich agglomerates that correlate with wider scatter in EN 1348 pull-off results; therefore the high-shear step is retained even when it reduces pot life by 10–20 min. The processing window is set by the competition between cement hydration and polymer coalescence. At a dry-polymer-to-cement ratio above 0.16, the VAE film forms before capillary water is fixed by hydration, producing a soft interlayer that lowers shear adhesion after heat ageing. Below 0.08, the dispersion does not produce sufficient polymer bridging across the interface with fully vitrified porcelain, and open time measured by EN 1346 may fall below 30 min. On production-scale twin-shaft mixers, the liquid component is introduced through the water inlet and not directly onto the powder bed, because direct injection onto the dry mix has been observed to create localised polymer skins around cement agglomerates. The mixed adhesive is applied with a 10 mm or 12 mm notch trowel; notch geometry is selected based on tile format, and the ribbed bed is combed in one direction to limit air entrapment beneath slabs larger than 0.36 m². Late application beyond the open time is a reported failure mode on site, evidenced by adhesive transfer of less than 50% to the back of a 600 mm × 600 mm porcelain tile after a 20 s adjustment. Terminal finished products include exterior porcelain facades, large-format low-porosity tiles over underfloor heating, and swimming pool surrounds where sustained moisture exposure is part of the design brief.
When VINNAPAS 4115 N is used in polymer-modified self-leveling underlayments, the formulation envelope is governed by the interaction between polymer solids and the high-range water reducers used to maintain flow. The dispersion is incorporated at a dry-polymer-to-cement ratio from 0.04 to 0.08, corresponding to 7.3–14.5 parts of dispersion per 100 parts cement at 55% solids. Beyond 0.08, the plastic viscosity of the mixed slurry rises sufficiently that the ring-flow diameter may fall below 240 mm without an additional water demand that then depresses the 28-day compressive strength below the floor class requirement. The targeted compliance class is CT-C20-F5 under EN 13813:2002, in which the screed material is installed in layers between 2 mm and 10 mm over radiant heating pipes or as a levelling substrate before vinyl and textile coverings. In continuous mixing pumps, the slurry passes through a pin mixer at 1,400 min⁻¹ and a rotor-stator pump that moves the material to the pour area; residence times below 20 s require the dispersion to be added into the pre-mix water before cement contact because inline addition into dry powder creates localised low-water zones that do not coalesce uniformly. Air entrainment from the pin mixer has been observed to reduce the 28-day compressive strength by 0.5–1.5 MPa when the slurry is over-pumped; therefore pump pressure and hose length are limited to avoid an air content above 3% by volume. The finished product category includes self-smoothing underlayments for vinyl planks, luxury vinyl tile, and thin-section renovating floors over existing ceramic tile or anhydrite screeds.
Crack-bridging cementitious waterproofing slurries applied beneath ceramic tiling on balconies, wet rooms, and shower surrounds are formulated with VINNAPAS 4115 N at a higher dry-polymer-to-cement ratio because the polymer film must bridge hydration cracks that occur before the cement matrix has reached final set. A typical ratio is 0.20–0.35, equal to 36.4–63.6 parts of dispersion per 100 parts cement. The relevant compliance standard is EN 14891:2017, which assesses liquid-applied water-impermeable products beneath ceramic tiling; the formulation is tested for water impermeability under 0.75 mm crack opening and for adhesion after water contact. The production process consists of high-shear dispersion of the cementitious powder into a pre-mixed liquid of VINNAPAS 4115 N and clean water in a forced-action mixer at 800 min⁻¹ for 90 s, followed by two-coat application with a medium-nap roller or stainless steel trowel. The first coat is applied at 0.5–1.0 kg/m², and while it is still wet, a 160 g/m² alkali-resistant glass-fibre mesh is embedded over coving angles and movement joints. The second coat follows at 24 h intervals and the membrane is cured under polyethylene sheeting for 48 h at relative humidity above 80%. Field failure modes associated with under-dosing include 0.2 mm shrinkage cracks in the first coat and loss of adhesion on existing glazed tile substrates. The addition of polyamine-based additives is excluded from this dispersion because the anionic polyvinyl alcohol stabilisation system can flocculate in the presence of cationic species, producing a granular liquid component that cannot be re-dispersed under site mixer shear. Application at substrate temperatures below 5 °C is also avoided because polymer film formation is incomplete and the first coat remains water-sensitive after 48 h. In two-component mixing stations, the dispersion is pre-weighed into separate containers to prevent cross-contamination with cement dust; a sealed mixing lid at 800 min⁻¹ reduces air entrainment to below 2% by volume. Membrane systems installed on balconies with structural movement joints require a continuous mesh band across the joint and a minimum dry film thickness of 1.0–1.5 mm; the second coat is applied only after the first has reached a finger-dry surface that does not transfer liquid polymer to the glove. Terminal finished products include waterproofing membranes under tile in domestic bathrooms, balcony terraces, steam rooms, and external podium decks where the membrane may remain exposed for up to 7 days before tiling.
The addition of VINNAPAS 4115 N to exterior thermal insulation composite system base coats addresses the competing requirement of impact resistance and low water-vapour diffusion resistance. In ETICS base coat formulations covered by EAD 040083-00-0404 and the legacy ETAG 004 test framework, the dispersion is dosed at a dry-polymer-to-cement ratio of 0.04 to 0.08, equivalent to 7.3–14.5 parts per 100 parts cement. At this level, the polymer phase improves the adhesion of the base coat to expanded polystyrene board and mineral wool lamella, while the equivalent air-layer thickness of the cured render remains below the system-specific limit required by the EAD. The production process uses a slow-running spiral-blade mixer to combine cement, fine silica sand in the 0.1–0.6 mm fraction, cellulose ether, and the dispersion pre-mixed with batch water. The base coat is applied at 2–3 mm thickness, and a 150–200 g/m² alkali-resistant glass-fibre mesh is embedded in the upper third of the wet layer to avoid alkali exposure at the surface. Over-mixing above 600 min⁻¹ has been observed on façade mixing stations to entrain air and reduce the impact resistance measured by the 3 J and 10 J hard-body impact tests under ETAG 004, section 5.1.3.2. The terminal product class includes base coats for expanded polystyrene, extruded polystyrene, and mineral wool insulation facades, as well as renovation base coats over structurally sound existing render.
| Application segment | Compliance framework | VINNAPAS 4115 N dosage range | Test reference |
| Two-component ceramic tile adhesive | ISO 13007-1:2014 C2 TE S1 | 14.5–27.3 parts per 100 parts cement | EN 1348 |
| Self-leveling underlayment | EN 13813:2002 CT-C20-F5 | 7.3–14.5 parts per 100 parts cement | ring-flow and compressive strength |
| Cementitious waterproofing membrane | EN 14891:2017 | 36.4–63.6 parts per 100 parts cement | EN 14891 |
| ETICS base coat | EAD 040083-00-0404 | 7.3–14.5 parts per 100 parts cement | ETAG 004 impact |
For non-structural concrete repair mortars classified R2 under EN 1504-3:2005, VINNAPAS 4115 N is incorporated at a dry-polymer-to-cement ratio between 0.05 and 0.12, corresponding to 9.1–21.8 parts of dispersion per 100 parts cement. The selected ratio is set by the requirement to achieve a direct pull-off adhesion to the prepared concrete substrate of at least 0.8 MPa when tested according to EN 1542:1999, while keeping the compressive strength within the R2 class band. In production, the dry mortar is mixed with the pre-diluted dispersion in a high-torque paddle mixer at 400–500 min⁻¹ until a lump-free consistency is reached; vertical repair mortars require a thixotropic consistency that is produced by adding the dispersion before the final powder fraction. Application follows substrate roughening to a surface profile of 1–3 mm, dampening to a saturated surface-dry condition, and the application of a thin bonding slurry prepared from the same mortar at a higher water content. The repair material is trowelled or sprayed in lifts of 5–30 mm per layer, with polyethylene sheeting curing for 5 days at relative humidity above 90%. Polymer under-dosage in these systems has been associated with edge cracking around spall repairs and with pull-off failures in the concrete substrate at ambient temperatures above 30 °C. Terminal finished products include repairs to concrete edges, balcony spalls, stair nosing breakouts, and floor slab surface defects where the residual concrete section remains structurally sound.
Low-absorption concrete substrates and residues of old tile adhesive create a smooth, closed surface where unmodified cement slurries develop pull-off strengths below 0.5 MPa. VINNAPAS 4115 N is used in bonding slurries and keying coats at a dry-polymer-to-cement ratio from 0.25 to 0.40, equal to 45.5–72.7 parts per 100 parts cement, to form an adhesion bridge between the prepared substrate and a subsequent cementitious topping. The compliance test for the bond is EN 1542:1999; production-scale evidence shows that the target pull-off strength of 1.0 MPa is achievable when the bond coat is applied wet-on-wet within 30 min and the topping is placed before the slurry skins over. The liquid component is mixed with cement and fine filler at 600 min⁻¹ until a brushable suspension is obtained, then applied by short-bristle brush or steel float at 0.5–1.5 kg/m². The working time is deliberately short because polymer film formation at the air interface can seal the bond coat and prevent the topping from penetrating the slurry layer. When an open bond coat is allowed to surface-dry beyond 20 min at 23 °C and 50% relative humidity, the subsequent adhesion can drop below 0.8 MPa, a failure mode recorded on repair sites where batch mixing preceded substrate preparation. Terminal finished product types include keying coats for polymer-modified concrete overlays, levelling screeds over old ceramic surfaces, and adhesion promoters for patch repairs in car parks and loading bays.
In cementitious tile grouts used for large-format gauged porcelain panels and externally heated screeds, VINNAPAS 4115 N is added at 10–20 parts per 100 parts of dry grout by weight, replacing a proportion of the gauging water to limit capillary shrinkage and edge microcracking while maintaining a workable consistency for rubber-float application. Compliance is evaluated under EN 13888:2009 for a CG2 WA grout, where the polymer modification contributes to water absorption below 5 g after 30 min and to improved adhesion at the grout-to-tile boundary. The production process for site mixing uses a slow-speed paddle mixer at 400 min⁻¹; the dispersion is first combined with the gauging water, and the powder is added over 60 s to avoid dry pockets. The mixed grout rests for 5 min, is remixed at 200 min⁻¹ for 15 s, and is then forced into joints with a hard rubber float in a diagonal motion. Excess material is removed after a firm set begins, and the joint surface is tooled with a damp sponge before the polymer film skins over. In heated screeds, published data for this specific configuration is limited, but field inspection indicates that joints without polymer modification develop hairline cracks at the grout-to-tile boundary within the first thermal cycle from 20 °C to 40 °C. Terminal finished products include grouts for butt-joint porcelain panels, exterior terraces, and screed joints over radiant heating pipes.
Competitive VINNAPAS 4115 N prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615380400285 or mail to sales2@liwei-chem.com.
We will respond to you as soon as possible.
Tel: +8615380400285
Email: sales2@liwei-chem.com
Flexible payment, competitive price, premium service - Inquire now!
VINNAPAS 4115 N is a redispersible polymer powder based on a vinyl acetate–ethylene (VAE) copolymer with poly(vinyl alcohol) as protective colloid. The product is manufactured by spray drying of an aqueous polymer dispersion; a mineral anti-caking agent is incorporated during drying to control powder flow and storage stability. It is supplied as a white to cream-colored free-flowing powder for use as an organic binder in cementitious and gypsum dry-mix formulations. The powder is not a cement replacement and is dosed on total dry mix weight, typically below 10% by mass. When the powder is mixed with water under mechanical shear, the primary polymer particles redisperse into the sub-micron to 2 µm size range. During drying, the particles coalesce into a continuous polymer film that contributes adhesion, flexural toughness, and reduced water permeability. Batch specification values for this grade include a solids content above 98% by mass, an ash content commonly between 10% and 14% by mass, and a bulk density from 400 g/L to 600 g/L. Residue retained on a 0.8 mm screen is controlled below 2% by mass. The pH of the redispersion is usually between 6 and 8 when measured by ISO 976. The glass transition temperature of the copolymer is below ambient, which permits film formation without external plasticizer. The manufacturer’s certificate of analysis is the controlling document for lot-specific numerical limits.
| Parameter | Typical range | Measurement basis |
|---|---|---|
| Solids content | ≥98% | Oven drying to constant mass |
| Ash content | 10–14% | Ignition residue |
| Bulk density | 400–600 g/L | DIN EN ISO 60 |
| Screen residue | <2% on 0.8 mm | Dry sieving |
| Redispersion pH | 6–8 | ISO 976 |
The values in the table are not batch-specific acceptance limits; they define the product class envelope and should be read against the original container documentation.
Redispersion is not instantaneous after water addition. In dry-mix plants, the powder must first be blended with cement, sand, fillers, and rheology-modifying additives in a twin-shaft compulsory mixer or planetary mixer. Production-scale experience with twin-shaft compulsory mixers of 200–500 L useful volume indicates that dry mixing times of 120–180 s are required for uniform distribution; mixing times below 90 s may leave polymer-rich pockets that appear as soft agglomerates in the wet mortar. After water addition, a high-shear paddle or dissolver disc at a peripheral speed of 10–20 m/s accelerates particle redispersion. Viscosity build in the wet mix is not a direct measure of redispersion completeness. The pH of the mixing water and cement is decisive: alkaline conditions with pH above 12.5 partially hydrolyze surface acetate groups on the VAE copolymer, increasing polymer hydrophilicity and improving adhesion to siliceous substrates, but excessive hydrolysis can reduce film cohesion. The powder is added to the dry blend, not directly to alkaline mixing water; direct addition can cause irreversible gel formation. A redispersion at 50% solids by mass generally shows a low to moderate Brookfield RVT viscosity; published data for this exact grade under all shear rates is limited, but VAE powders of this class commonly fall between 1000 mPa·s and 4000 mPa·s at 20 rpm and 20°C. The dispersion should be used within 24 h to avoid microbial growth and settling.
In continuous blending plants, the powder is conveyed from silos to the mixer by screw or pneumatic conveying. Because the bulk density of the powder is only 400–600 g/L, pneumatic transfer lines should be designed for dilute-phase conveying with air velocity below 25 m/s to limit particle attrition and triboelectric segregation. Gravimetric dosing systems must be calibrated with the actual delivered bulk density; volumetric systems are not recommended for addition levels below 1.0 wt%. Batch-to-batch variation in ash content can alter water demand in dry-mix formulations. Production records from continuous double-screw mixers indicate that formulation water adjustments of 1–2 kg/m³ may be necessary between shipments. The powder is sensitive to compaction in storage silos; fluidization pads should be operated intermittently rather than continuously to prevent particle breakup and selective loss of the anti-caking agent.
In cementitious tile adhesives classified under EN 12004-1:2017, VINNAPAS 4115 N is commonly dosed between 1.5 wt% and 5.0 wt% of total dry mix. The polymer phase bridges microcracks in the cement hydration product and improves adhesion to low-porosity tiles and existing substrates. Tensile adhesion after 28 days standard storage, measured according to EN 1348:2007, generally exceeds 0.5 N/mm² at dosages above 3.0 wt%; published third-party data for this exact grade and formulation configuration is limited, so ISO 13007-1:2014 classification requires product-specific initial type testing. Water immersion and freeze–thaw adhesion retention depend on polymer dosage, cement type, and water-to-binder ratio; formulations with high CEM I content and a water-to-binder ratio above 0.55 may show reduced retention. The powder extends open time by slowing surface skin formation. At dosages above 5.0 wt%, cement hydration can be retarded; initial setting time measured by Vicat apparatus may shift beyond 24 h depending on cement sulphate balance and ambient temperature. This is not a failure if final strength and adhesion remain within classification limits, but it can slow tile installation traffic. Wet mortar water retention increases as dosage increases, and open time is typically elongated by 10–20 min at 23°C and 50% relative humidity when dosage increases from 3.0 wt% to 5.0 wt%; exact values depend on substrate absorption and air movement.
Self-leveling underlayment formulations specified under EN 13813:2002 use VINNAPAS 4115 N at 1.0–4.0 wt% to modify flow and reduce water demand. In production-scale trials, the powder reduces interparticle friction between filler grains, allowing water reduction of 3–5% at equivalent slump flow measured with a 30 mm ring. The resulting mortar shows improved surface levelling and lower bleeding. Compressive strength at 28 days may decrease by 5–15% relative to the unmodified reference due to the lower modulus of the polymer phase; flexural strength, measured by EN 13892-2, typically increases by 20–40%. The powder introduces fine polymer particles that can stabilize foam generated during mixing. Air entrainment must be controlled with a polyether-based defoamer at 0.05–0.20 wt% of total dry mix; air content above 3% by volume lowers compressive strength disproportionately. Self-leveling production equipment with continuous screw mixers should maintain a homogeneous feed rate because segregation of lightweight polymer powder from denser cement and quartz can occur during pneumatic transfer if air velocity exceeds 25 m/s.
For gypsum-based self-leveling compounds and gypsum plasters, the powder dosage is lower, commonly 0.5–2.0 wt%. The absence of high Portland-cement alkalinity preserves the poly(vinyl alcohol) stabilizer and reduces the risk of acetate hydrolysis. The polymer film increases surface hardness and reduces dusting of finished gypsum surfaces. Setting time measured by Vicat apparatus under EN 13279-2 may shift by less than 10 min at 20°C at standard water-to-binder ratio.
Film formation occurs only when the drying temperature exceeds the minimum film-forming temperature of the redispersed polymer. For VAE powders of this class, the MFFT is generally near 0°C; below this temperature, polymer particles remain discrete and adhesion after drying is sharply reduced. Site application at substrate temperatures below 5°C is therefore outside the recommended processing window. At relative humidity above 85%, water evaporation slows and the polymer film remains tacky longer; this can delay tiling or grinding operations. The formed film has a measurable water vapour transmission rate, and thicker polymer films generated at dosages above 5.0 wt% reduce vapour permeability in façade adhesive systems. When moisture-sensitive substrates are involved, a hygrothermal assessment under EN ISO 12572 is required to avoid trapped moisture at the interface.
Calorimetric monitoring of VAE-modified CEM I pastes shows that the main silicate hydration peak can be delayed by 1–4 h at 20°C as polymer dosage increases from 2 wt% to 5 wt%. The delay is attributed to adsorption of polymer particles on cement grains and complexation of calcium ions by acetate groups. In fast-setting repair mortars, this retardation may conflict with early-strength requirements defined in EN 1504-3:2005 for R3 and R4 classes. Formulators should confirm compressive strength at 6 h and 24 h because the retardative effect is amplified in low-sulphate cements. Maintaining a sulphate-to-aluminate molar ratio of at least 0.67 can partially mitigate polymer-induced delay. The water-to-binder ratio should be kept below 0.40 in repair mortars containing the powder to limit strength loss.
Differences from other products must be evaluated through composition and film properties. Vinyl acetate homopolymer powders exhibit a glass transition temperature near 30°C and require external plasticizer for film formation at ambient temperature; VINNAPAS 4115 N contains copolymerized ethylene that reduces the glass transition temperature and eliminates the need for plasticizer. Compared with high-ethylene VAE grades, the polymer film in VINNAPAS 4115 N is stiffer, which supports compressive strength in self-leveling compounds while retaining sufficient elongation for moderate deformability in tile adhesives. Relative to styrene–butadiene rubber powders, the saturated VAE backbone contains no residual double bonds, leading to lower UV-induced yellowing and better outdoor colour stability; quantitative colour change must be measured by ISO 4582 or equivalent. Compared with vinyl acetate–ethylene–vinyl chloride terpolymers, the product contains no vinyl chloride units, therefore it does not release hydrogen chloride during combustion and has lower film density. The difference in polymer chemistry also affects wet glass transition and adhesion to non-porous surfaces; high ethylene grades may develop higher tack but lower hardness. The choice of VINNAPAS 4115 N over other VAE powders is therefore a balance between dry mortar strength retention and wet-state flexibility.
The powder is compatible with Portland cement, calcium aluminate cement, and calcium sulfate binders when water demand is independently controlled. The poly(vinyl alcohol) stabilizer is hydrolytically sensitive in highly alkaline mortar with pH above 13; repeated wet–dry cycles can partially re-emulsify surface polymer and reduce adhesion retention. Avoid combination with amine-based accelerators at addition levels above 0.2 wt%; amine species may destabilize the redispersed polymer before film coalescence. In calcium aluminate cement-based repair mortars specified under EN 1504-3:2005, the powder may delay setting at ambient temperatures below 10°C; early strength development should be confirmed at 6 h and 24 h. Storage in opened bags at relative humidity above 60% should be limited to 72 h; longer exposure can cause blocking in screw conveyors and loss of flow from silo discharge cones. The organic polymer fraction may swell or degrade in contact with ketone solvents or strong oxidizing acids; clean equipment with water rather than solvent when polymer residues are present.
