| HS Code | 508533 |
| Product | VINNAPAS 5044 N |
| Product Type | Redispersible polymer powder |
| Chemical Basis | Vinyl acetate-ethylene (VAE) copolymer |
| Appearance | White to light beige free-flowing powder |
| Protective Colloid | Polyvinyl alcohol |
| Additive | Mineral anti-caking agent |
| Bulk Density | Approx. 450 g/l |
| Solids Content | Min. 99% |
| Residual Moisture | Max. 1% |
| Particle Size | Max. 4% residue on 400 µm sieve |
| Ash Content | Approx. 14% (sulfated ash) |
| Ph Redispersion | Approx. 7 |
| Viscosity Redispersion | Approx. 10 mPa·s |
| Minimum Film Forming Temperature | Approx. 0 °C |
| Glass Transition Temperature | Approx. -5 °C |
As an accredited VINNAPAS 5044 N factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | VINNAPAS 5044 N is a free-flowing white powder supplied in 25 kg multi-layer paper bags with a protective plastic liner. |
| Container Loading (20′ FCL) | 20′ FCL: VINNAPAS 5044 N polymer powder loaded in bags on shrink-wrapped pallets, secured for safe transport. |
| Shipping | VINNAPAS 5044 N is an aqueous vinyl acetate-ethylene copolymer dispersion, shipped as a non-hazardous liquid in drums, IBCs, or tank containers. Protect from freezing and excessive heat; store between 5–35°C. Ensure secure, upright loading to prevent leakage. Standard shelf life is six months from production. |
| Storage | Store VINNAPAS 5044 N in tightly sealed original containers in a cool, dry, well-ventilated area. Maintain temperature between 5°C and 35°C; protect from frost, direct sunlight, and excessive heat. Avoid contamination and evaporation. Stir gently before use. Under recommended conditions, shelf life is typically six months from delivery. |
| Shelf Life | Shelf life is typically 6 months from delivery if stored in original, unopened containers, protected from frost, at temperatures between 5–30°C. |
In below-grade, balcony, and wet-room waterproofing, flexible cementitious slurries containing VINNAPAS 5044 N function as the primary water-ingress barrier. The powder is a polyvinyl alcohol-stabilized vinyl acetate–ethylene copolymer with a minimum film-forming temperature near 0 °C and a glass transition temperature in the range of −10 °C to −5 °C when measured by differential scanning calorimetry. A typical slurry is compounded with CEM I 52.5 R or CEM II/A-LL 42.5 R, graded silica sand with a top size between 0.3 mm and 0.6 mm, and VINNAPAS 5044 N at 5–12 wt% of total dry weight. Mixing is carried out with a slow-speed paddle at 400–600 rpm for 3 min, followed by 2 min maturation and remixing. The wet mix is applied by roller, trowel, or airless spray at a wet film thickness of 1.0–2.0 mm per coat. After curing at 23 °C and 50% RH for 28 d, the material develops crack-bridging behaviour and adhesion to concrete. Performance is evaluated under EN 14891 for liquid-applied water impermeable products, EN 12390-8 for water penetration resistance, EN ISO 527-3 for film tensile properties, and ASTM C836-15 for application to concrete surfaces. On production lines, batch-to-batch variation in silica sand moisture above 0.3% causes lumps in the dry blend and can shift final slurry viscosity by more than 15%. Because the powder is redispersible, storage must remain below 35 °C and protected from ambient humidity. Final products include balcony decks, internal wet rooms, foundation walls, and concrete water tanks where flexible cementitious membranes replace sheet-applied systems.
Because C2S2 classification requires a transverse deformation of at least 5 mm under EN 12004-2, adhesion development is governed less by cement strength than by the coalesced VAE film network that survives water immersion, heat ageing, and freeze/thaw cycling. A formulation using VINNAPAS 5044 N at 2.5–4.5 wt% on total dry mix, CEM I 52.5 R, 0.1–0.5 mm silica sand, cellulose ether at 0.3–0.5 wt%, and calcium formate accelerator at 0.2–0.5 wt% is dry-blended in a horizontal ploughshare mixer with a fill ratio of 55–65% and mixing time of 180–240 s. Water addition is adjusted to a wet mortar density of 1.45–1.55 kg/L. For large-format porcelain panels, a notch trowel of 10 mm × 10 mm × 10 mm is used to produce a ribbed bed thickness of 2–3 mm after combing. Open time is measured according to EN 1346 by monitoring skin formation on the ribbed surface. Tensile adhesion after 28 d is measured according to EN 1348. The table below lists the classification thresholds relevant to C2S2 products.
| Classification | Test condition | Performance threshold |
|---|---|---|
| C2 initial tensile adhesion | EN 1348 | ≥1.0 MPa |
| C2 after water immersion | EN 1348 | ≥1.0 MPa |
| C2 after heat ageing | EN 1348 | ≥1.0 MPa |
| C2 after freeze/thaw cycles | EN 1348 | ≥1.0 MPa |
| S1 deformability | EN 12004-2 | ≥2.5 mm |
| S2 deformability | EN 12004-2 | ≥5.0 mm |
Production experience with forced-action mixers shows that adding VINNAPAS 5044 N directly after cement can generate powder segregation in the screw conveyor. The preferred sequence is sand, VINNAPAS 5044 N, cement, and then fine additives. Final products include exterior facades, swimming pool surrounds, and industrial kitchens where thermal shock and wet service demand C2S2 performance. Published data for the specific interaction between VINNAPAS 5044 N and calcium formate in open-time extension is limited.
For self-leveling underlayments placed over old ceramic tile, epoxy residues, or gypsum substrates, VINNAPAS 5044 N is dry-blended at 2.0–4.0 wt% of total dry mix with CEM I 42.5 R or CEM III/A, 0.1–0.3 mm quartz sand, polycarboxylate superplasticizer at 0.1–0.3 wt%, and defoamer at 0.05–0.1 wt%. Mixing with water at a water/powder ratio of 0.20–0.24 in a continuous mixer or high-shear pump produces a flow diameter of 240–260 mm when tested according to EN 12706. The wet screed is poured at 3–10 mm thickness and de-aerated with a spike roller. The VAE powder lowers carbonation shrinkage cracking tendency by bridging microcracks at the interface with old concrete. EN 13813 specifies properties for cementitious screed materials; a common designation for this layer type is CT-C20-F6. Field experience on semi-automatic mixing pumps has demonstrated that water addition below 0.19 can cause the VAE powder to compete with cement for available water, increasing air entrainment and reducing pumpability. For wood floor installation, residual moisture is measured according to ASTM F2170. The VAE-modified layer does not act as a vapour barrier, and an additional surface damp-proof membrane is required when subsurface RH exceeds 75%. Final products include floor systems under LVT, sheet vinyl, ceramic tile, and resin coatings.
When hand-applied and machine-sprayed repair mortars are compounded with VINNAPAS 5044 N at 3.0–6.0 wt% of total dry mortar, the polymer reduces modulus and increases adhesion to prepared concrete. The repair mix typically contains CEM I 42.5 R or CEM II/A-M, 0.1–1.0 mm graded aggregate, silica fume at 2–5 wt%, and a shrinkage-reducing admixture. Water demand is set to a wet consistency of 160–180 mm flow per EN 1015-3. Substrate preparation is the critical operation: concrete is scarified to ICRI CSP 5 or higher, wetted to a saturated-surface-dry condition, and tack-coated with a polymer slurry. Pull-off adhesion is measured according to EN 1542 on 50 mm diameter dollies; acceptance values are class-dependent under EN 1504-3. On vertical and overhead repair sections, the VAE powder reduces sag when combined with cellulose ether at 0.02–0.08 wt%. A processing boundary appears when dosage exceeds 8 wt% because the additional PVOH from the redispersible powder can prolong setting time by 30–90 min, depending on cement alkali content and curing temperature below 10 °C. For this reason, EN 1504-3 compliance testing includes initial set time under EN 196-3 and compressive strength development. The final products include structural patch repair, balcony edge reprofiling, and concrete facade spall repair where thermal movement requires controlled crack-bridging. Avoid combining VINNAPAS 5044 N with high-dose amine-cured epoxy bonding agents without prior testing because amine blush can impair adhesion at the overlay interface.
In gypsum-based troweling compounds, VINNAPAS 5044 N is charged at 1.0–3.0 wt% of total powder to improve cohesion and edge hardness without forming a continuous film at low dosage. The binder is typically β-hemihydrate calcium sulfate with a Blaine fineness of 4,500–6,500 cm²/g, combined with limestone filler, tartaric acid retarder at 0.03–0.10 wt%, and a cellulosic thickener. Mixing is performed with a low-speed mixer at 400–500 rpm; water demand is adjusted to a Vicat cone spread of 160–180 mm per EN 13279-1. The VAE powder lubricates the gypsum crystal matrix during troweling and then coalesces around interface pores during drying, reducing friability at feather edges. On continuous mixing lines, the powder is fed via loss-in-weight dosing into a pin mixer, where residence time is kept below 15 s to avoid shear heating above 40 °C. Higher temperatures can cause the PVOH protective colloid to soften and the powder to form agglomerates that appear as visible lumps in the finished paste. Final products include hand-applied joint fillers, tape-embedding compounds, and gypsum skim coats under EN 13279-1 and ASTM C475, although published data specifically on 5044 N in gypsum matrices is limited in peer-reviewed literature. The pH window between the VAE powder dispersion, typically 6.5–8.0, and the gypsum matrix, typically 6–8, is narrower than in cement systems and generally avoids alkaline hydrolysis of the acetate groups.
On external thermal insulation composite systems, the base coat must remain trowellable at low water contents, embed glass fibre mesh without sagging, and resist water ingress after weathering. VINNAPAS 5044 N is added at 3.0–5.0 wt% of dry mortar, alongside CEM I 52.5 R, 0.1–0.5 mm limestone or silica sand, hydrophobic agent at 0.2–0.5 wt%, and cellulose ether at 0.1–0.3 wt%. Mixing is performed in a gravity mixer for 5 min; the wet mortar is applied at 3–5 mm total thickness and the glass fibre mesh is embedded at the mid-thickness plane. Water absorption after 24 h is measured according to EN 1015-18 and should remain below 0.5 kg/m²·h⁰·⁵ for high-performance base coats. The VAE film contributes to capillary blocking only after film coalescence during the first drying cycle. Adhesion of the base coat to expanded polystyrene boards is measured by EN 13494; failure values are typically governed by the insulation foam rather than the mortar. On building-site mixers, the main failure mode is under-dispersion of the hydrophobic powder when it is charged before VINNAPAS 5044 N, and the resulting dry lumps create visible pinholes after troweling. Final products include externally insulated concrete and masonry walls with expanded polystyrene or mineral wool insulation boards, finished with acrylic or silicone-based renders. Conformity is assessed under EAD 040083-00-0404 for ETICS and ETAG 004 where still accepted by the Member State.
At 3.0–6.0 wt% of total dry mix, VINNAPAS 5044 N lowers water absorption and improves pigment suspension in cementitious wide-joint grouts for high-movement and submerged tiling. The base is CEM I 42.5 R, 0.05–0.2 mm quartz sand, calcium carbonate filler, pigment at 0.5–2.0 wt%, and a defoamer compatible with VAE chemistry. Water addition is set to a paste slump of 130–150 mm; mixing at 300–400 rpm for 3 min produces a smooth paste. The grout is forced into joints with a rubber float at 45° to the tile plane and tooled after 15–25 min with a damp sponge. The resultant VAE film reduces water absorption below 5% after 24 h per EN 12808-5 and improves flexural strength per EN 12808-3. On factory lines, pigments must be pre-dispersed before VINNAPAS 5044 N addition to avoid colour streaking; post-addition of pigment at high speed has been observed to generate static charges and port clogging. Final products include swimming pools, steam rooms, and exterior clad facades where grout is classified as CG2AW under ISO 13007-4. A limitation is that VINNAPAS 5044 N is not a substitute for epoxy grout in aggressive chemical environments; concentrated acids and strong alkaline cleaners degrade the VAE film and can cause joint softening.
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VINNAPAS 5044 N is a redispersible polymer powder based on a vinyl acetate–ethylene copolymer stabilised with a polyvinyl alcohol protective colloid. The grade is supplied as a white to light beige free-flowing powder and is dry-mixed into cementitious and calcium sulfate formulations to modify adhesion, flexural strength, water retention, and rheology after hydration. The product code identifies a standard particle-size distribution within the VINNAPAS N series; the ethylenic comonomer content produces a glass transition temperature below 0 °C, which is the primary determinant of film-forming behaviour at ambient temperatures. In dry mortar plants, the powder is generally introduced after the mineral binder and aggregate preblend and before any liquid admixtures, preventing premature contact with water and reducing lump formation in continuous or batch mixers. Principal application fields include self-leveling underlayments, ceramic tile adhesives, repair mortars, grouts, and gypsum-based patching compounds. The addition rate is formulation-dependent and typically falls between 1.5% and 6.0% by dry mix weight; the exact proportion is determined by the required consistency, substrate type, and mechanical classification under EN 13813 or EN 12004:2017.
Redispersible VAE powders of this type are spray-dried from aqueous polymer dispersions. When the dry mix is hydrated, the polyvinyl alcohol protective colloid dissolves and releases the polymer particles into the aqueous phase under low-shear mixing. The resulting dispersion deposits polymer films on pore walls and around cement and gypsum crystals during drying and hardening. Manufacturer-published typical data for VINNAPAS 5044 N are summarised in the following table; values are not specification limits and should be checked against the current technical data sheet for production lot acceptance.
| Property | Typical value | Relevance |
|---|---|---|
| Solids content | 99 ± 1% | Defines powder purity and potential blocking behaviour |
| Bulk density | 450–650 g/L | Affects screw feeder calibration and silo capacity |
| Residue on 400 µm sieve | ≤ 4% | Controls lump-free redispersion in low-shear mixers |
| pH (10% aqueous) | 6.5–8.0 | Indicates compatibility with cement and gypsum systems |
| Ash content | 10–13% | Mineral filler content for storage stability and flow |
| Minimum film-forming temperature | ≈ 0 °C | Sets lower application temperature boundary for film coalescence |
| Glass transition temperature | ≈ -7 °C | Controls flexibility, adhesion, and failure mode under stress |
The low glass transition temperature originates from the ethylene segments in the copolymer backbone and permits coalescence without external plasticisers or coalescing agents. The film-forming temperature of approximately 0 °C does not imply that cement hydration will proceed normally at that temperature; cementitious systems still require heat and moisture for strength development. For mortar performance, the relevant fresh-state measurements are consistency by EN 1015-3 and air content by EN 1015-7; hardened mortar flexural and compressive strengths are evaluated according to EN 1015-11.
During hardening, the redispersed polymer particles adsorb onto hydration products and aggregate surfaces. Calcium ions released by portland cement destabilise the stabilising layer in a controlled manner, forming a continuous polymer film that bridges microcracks and capillary pores. This film contributes to flexural strength gain and reduces the dynamic elastic modulus of the mortar. The low Tg of -7 °C ensures that the polymer remains deformable at service temperatures above the minimum film-forming temperature. On production lines, twin-shaft compulsory mixers can fail to fully redisperse the powder if the dry premix residence time is too short; field experience indicates that pulsing the powder through a screw feeder into the sand stream immediately ahead of the mixer intake improves uniformity and reduces lump-related surface defects in self-leveling screeds.
Self-leveling underlayments based on portland cement or calcium sulfate frequently require a flow-ring diameter of 140–160 mm without bleeding or aggregate segregation. VINNAPAS 5044 N is added at 2.0% to 5.0% by total dry mix weight in these formulations. The polymer increases the volume of deformable organic phase around fine particles and modifies interfacial tension at the aggregate–paste boundary, allowing the mix to maintain flow without a proportionate increase in water demand. In calcium sulfate-based systems, the polymer film can slow the growth of gypsum crystals at the surface and extend the trowel-finishing window; this effect is formulation-dependent and must be balanced against the final surface hardness. The hardened material is assessed under EN 13813:2002; relevant classes include compressive strength, flexural strength, and drying shrinkage. In cement-based underlayments, adding the powder at equal water–binder ratio commonly increases flexural strength. If water is added to maintain ring spread, compressive strength may decrease by a formulation-specific margin; the threshold is often observed when the water demand exceeds the control formulation by more than 5%. On continuous mixing pumps with rotor–stator geometry, the powder is introduced into the dry blend to avoid hydration before the mixing chamber. The bulk density range of 450–650 g/L requires feed recalibration when switching from unmodified cementitious formulations; screw feeders calibrated for denser mineral fillers can under-dose or over-dose by more than 15% if gravimetric control is not used.
Ceramic tile adhesives formulated with VINNAPAS 5044 N can be designed for C2-class thin-bed mortars under EN 12004:2017, typically at 2.0% to 5.0% by dry mix weight. Adhesion, open time, and slip resistance are tested following EN 1348:2007 and EN 1308; measured values are substrate- and formulation-specific. The powder is selected over harder VAE grades such as 5010 N when deformation class S1 or S2 is specified, because the lower polymer Tg reduces brittle interfacial failure when the adhesive layer is subjected to thermal movement. On low-porosity porcelain with water absorption below 0.5%, adhesion is commonly limited by the quality of tile back wetting and substrate preparation; the polymer contributes to cement paste wetting and tack retention. Application crews using notched-trowel techniques on heated screeds have observed that pre-wetting the tile back is not always required when the adhesive contains 5044 N, provided the substrate is free of form-release oils; published data for this specific configuration is limited.
VINNAPAS 5044 N differs from other VAE powders in the N series primarily in ethylene content and the resulting glass transition temperature. The harder VINNAPAS 5010 N grade has a typical Tg of approximately +16 °C; it provides greater compressive strength retention at elevated service temperatures, but its film formation is less favourable at low ambient temperatures and it yields lower flexibility. VINNAPAS 5025 L is an intermediate product with a Tg closer to 0 °C, used where moderate adhesion and flexibility are sufficient. The lower Tg of VINNAPAS 5044 N of approximately -7 °C shifts mechanical response toward ductile deformation. In freeze–thaw cycles, this difference may change the failure mode from adhesive interfacial detachment to cohesive failure within the mortar layer, which is relevant when deformable adhesive classifications S1 or S2 are specified. The polyvinyl alcohol protective colloid also influences water sensitivity; grades with similar Tg may differ in redispersibility and viscosity build because of colloid molecular weight and degree of hydrolysis. These distinctions are formulation-sensitive, and selection between 5044 N, 5025 L, and 5010 N should be made through comparative testing under the applicable end-use standard rather than by Tg alone.
Gypsum-based patching and floor leveling compounds can incorporate VINNAPAS 5044 N at 1.5% to 4.0% by dry weight. The internally plasticised polymer film improves edge strength and sanding resistance while reducing dust formation during surface finishing. In calcium sulfate matrices, the film restricts water vapour and liquid water transport across gypsum crystal boundaries, improving water resistance of the cured material; however, this mechanism is not equivalent to the action of hydrophobic admixtures in permanently wet environments. Mechanical assessment should follow EN 13279-1:2008 for gypsum binders and plasters or the relevant product standard for gypsum-based floor compounds. In storage areas with relative humidity above 60%, the powder may absorb moisture and should be consumed promptly after opening; partially emptied bags must be resealed to maintain flowability and prevent irreversible blocking.
Repair mortars and tile grouts are additional application fields. In polymer-modified structural repair mortars tested under EN 1504-3, VINNAPAS 5044 N can be incorporated at 2.0% to 5.0% to improve adhesion to prepared concrete substrates and reduce shrinkage cracking. The low Tg of -7 °C is particularly relevant when repair patches are exposed to thermal cycles before the final protective coating is applied. Tile grouts benefit from reduced water absorption and improved colour stability; however, the dosage is usually limited to 2.0–4.0% to avoid excessive stickiness during tooling. Manufacturers should validate workability with the actual tile type and joint width, because fine grouts with high polymer content can clog cleaning sponges and increase labour time on large wall surfaces.
Formulation conflicts may arise with certain accelerators and defoaming agents. Calcium formate and lithium carbonate accelerators used in calcium sulfate systems can increase early strength but may reduce the open time benefit of the polymer if overdosed. Defoamer selection is critical because the polyvinyl alcohol protective colloid interacts with non-ionic surfactants; excessive defoamer can destabilise the redispersed polymer and cause visible film aggregates on the surface. A systematic ladder study under EN 1015-11 is recommended when the dosage of any competing admixture is changed by more than 0.5%.
Processing boundaries include storage in dry, cool environments at temperatures not exceeding 35 °C and protection from direct sunlight. The powder is organic and combustible as a dust; dust-air mixtures should be kept below the lower explosion limit, and process equipment should be grounded in accordance with Directive 2014/34/EU for explosive atmospheres. VINNAPAS 5044 N is not classified as hazardous under current EU CLP criteria, but airborne dust may cause mechanical irritation and respiratory discomfort. In dry-mix formulations containing high-alkali cements, the polymer remains stable during normal hydration; however, combinations with strong oxidizers or certain borate salts may alter redispersibility or induce premature gelling. Published data for these specific interactions is limited, so compatibility testing under production conditions is required before large-scale use.
