| HS Code | 901684 |
| Product Name | VINNAPAS 4023 N |
| Product Type | Vinyl acetate-ethylene copolymer dispersion |
| Appearance | White aqueous dispersion |
| Solid Content | Approx. 50% by weight |
| Viscosity | 3000 - 5000 mPa·s (Brookfield, 23°C) |
| Ph | 4.0 - 5.0 |
| Particle Size | Approx. 1 μm |
| Glass Transition Temperature Tg | Approx. -7°C |
| Minimum Film Formation Temperature Mfft | Approx. 0°C |
| Density | Approx. 1.05 g/cm³ at 20°C |
| Protective Colloid | Polyvinyl alcohol |
As an accredited VINNAPAS 4023 N factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | VINNAPAS 4023 N is supplied in 200 kg drums, 1,000 kg IBC containers, or bulk tankers, depending on requirements. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with VINNAPAS 4023 N, secured properly, ensuring stability and safe transport. |
| Shipping | VINNAPAS 4023 N is a water-based polymer dispersion, typically shipped in drums, IBC totes, or bulk tanks. Protect from freezing and excessive heat to maintain stability. Avoid prolonged storage above 30°C. Ensure containers are sealed and upright; no hazardous classification, but handle with standard industrial hygiene. |
| Storage | Store VINNAPAS 4023 N in original, tightly sealed containers in a cool, dry, well-ventilated area away from direct sunlight, strong oxidizers, and heat sources. Maintain temperatures between 5°C and 35°C to prevent freezing or coagulation. Avoid contamination, keep containers upright, and follow shelf-life recommendations to preserve dispersion stability. |
| Shelf Life | Shelf life is 6 months from date of delivery when stored in original sealed containers at 5–30°C, protected from frost. |
When VINNAPAS 4023 N is dry-blended at 3.0 wt% to 4.0 wt% of total dry mix into a cementitious tile adhesive containing CEM I 42.5 R, graded quartz sand 0.1–0.5 mm, cellulose ether water-retention agent, and calcium formate accelerator, the redispersible vinyl acetate-ethylene copolymer particles hydrate within the mixing water and coalesce into a polymer network that interpenetrates the calcium silicate hydrate gel after the mortar exceeds initial set. The polymer phase reduces the static yield stress of the wet adhesive enough to maintain trowel ridge geometry for a 10 mm × 10 mm × 6 mm notched trowel while the open time to a C2E designation is evaluated by EN 1348 tensile adhesion on a porcelain tile bed after a defined elapsed time, normally 20 min for C2 and 30 min for C2E. A plant-scale forced-action mixer with a 500 L batch size and tip speed between 15 m/s and 20 m/s is used to add the powder after calcium formate and before the fine sand fraction; addition before sand elevates the temperature above 45 °C, causing polyvinyl alcohol-protected particles to soften and form agglomerates on the mixer wall. For a C2TE classification under EN 12004:2007+A1:2012, tensile adhesion after water immersion for 7 d at 23 °C, after heat ageing for 14 d at 70 °C, and after freeze-thaw cycling must be verified by EN 1348, while transverse deformation under EN 12002 is checked for an S1 designation when the powder addition is adjusted to 4.0 wt% or higher. Terminal products include large-format low-porosity porcelain tile adhesives for interior and exterior walls, heavy-traffic floor adhesives for underfloor heating screeds, and thin-bed adhesives for façade panels where the C2T slip-resistant designation prevents tile displacement after placement.
In a ternary binder system based on low-alkali ordinary Portland cement, calcium aluminate cement, and calcium sulfate, the powder functions not as a viscosifier alone but as a colloidal stabilizer that maintains the dispersion of ettringite-adjacent mineral phases during the first 20 min after water addition. Flow retention is tested by EN 12706 ring spread; the mixed self-leveling underlayment is poured at 2 mm to 10 mm, and the polymer film slows surface water evaporation enough to prevent early crusting but not so much that it traps bleed water under an impermeable sheet. Published plant data for this specific VAE powder configuration is limited to batch-level quality assurance ranges, and the values in the following table are representative envelope observations from polymer-modified self-leveling production lines rather than absolute specification limits.
| Addition level (wt% of total dry mix) | Flow after 20 min per EN 12706 ring (mm) | 24 h compressive strength trend | Observed surface defect |
|---|---|---|---|
| 1.5 | 120–130 | reference range | edge curl in ≤2 mm pours |
| 2.5 | 132–140 | 5–10% reduction | none at 3 mm pour depth |
| 4.0 | 148–160 | 10–15% reduction | surface tack under impermeable covering |
The dry blend is processed in a single-shaft ploughshare mixer at 120 rpm for 180 s with the powder introduced after the retarder and defoamer; a continuous mixing pump with 25 mm internal diameter hose and 30 bar working pressure conveys the wet mortar to a spiked roller that breaks air bubbles formed by high-speed mixing. Terminal products include bonded and unbonded cementitious underlayments for luxury vinyl tile, epoxy interlayers, and heated floor levelling mortars where thermal movement from pipe circuits demands a film-forming polymer that retains adhesion after heating cycles.
For flexible cementitious waterproofing slurries applied by brush or notched trowel, the vinyl acetate-ethylene copolymer introduced through VINNAPAS 4023 N film formation becomes structurally relevant only after the cement paste has passed beyond the initial hydration exotherm; therefore the powder content is normally set at 4.0 wt% to 6.0 wt% of total dry mix rather than the lower tile adhesive range. The slurry is prepared by adding 24–26 L of water to a 25 kg bag and mixing at low speed for 90 s, followed by 60 s maturation and 30 s remix to allow the polyvinyl alcohol protective colloid to dissolve and release the dispersion. The first coat is applied at 1.0 kg/m² to 1.2 kg/m², and the second coat is applied after 4 h at 1.0 kg/m²; alkaline-resistant glass-fibre mesh is embedded at internal corners and floor-wall junctions to prevent stress concentration at changes in substrate stiffness. Water impermeability and crack bridging are assessed under EN 14891:2017, while pull-off adhesion to concrete may be determined by EN 1542:1999 with 0.8 MPa commonly used as a plant acceptance threshold for a 7 d dry cure. The powder improves crack bridging at low film-formation temperature but does not by itself provide resistance to sustained positive hydrostatic pressure; a powdered organosilicon water repellent is added when the terminal product is used for basement tanking or below-grade lift pits. Terminal products include brush- and trowel-grade waterproofing slurries for wet rooms, balconies, foundation plinths, and as a levelling membrane beneath cementitious tile adhesive.
The base coat is mixed at an initial 400 rpm in a paddle mixer until the dry components are fully wetted, then sheared at 800 rpm for 60 s to fully redisperse the powder particles; the resulting paste must remain trowel-stable under a 5% slope without sagging as the glass-fibre mesh is pressed into the wet mortar. A starting formulation contains 3.0 wt% VINNAPAS 4023 N, cement, 0–1 mm limestone or quartz sand, and a powdered hydrophobing agent, with the powder addition set against the cation demand of the cement in order to hold the mesh embedment depth at 2 mm from the outer surface. Adhesion to expanded polystyrene and mineral wool is tested by pull-off methods under ETAG 004 and EAD 040083-00-0404; impact resistance and conditioning after hygrothermal cycles are also part of the European Technical Assessment. Field failure usually appears as mesh readout when the powder content is below 2.5 wt% and the dry mortar retains insufficient film-forming capacity at low substrate temperatures near 5 °C, while overdosing above 4.5 wt% produces a sticky base coat that drags during finishing trowel passes. Terminal products include cementitious adhesives and base coats for expanded polystyrene, extruded polystyrene with mechanically fixed or bonded insulation boards, and renovated façade surfaces where an existing painted substrate requires a polymer-rich compensative layer.
For R4-class structural repair mortars, the polymer film redistributes tensile stress across aggregate-cement interfaces and reduces the elastic modulus below the threshold that triggers spalling at the perimeter of a patch when the substrate and repair layer experience differential thermal movement. VINNAPAS 4023 N is dry-blended at 2.5 wt% to 4.0 wt% of total dry mix with Portland cement, silica fume or metakaolin, 0–2 mm quartz aggregate, and a chloride-free set accelerator. The repair mortar is applied to a prepared concrete substrate with a roughness profile of 1.5 mm to 2.5 mm achieved by abrasive blasting; the mixed mortar is placed in 5 mm to 20 mm layers for vertical and overhead patches, with each layer roughened before the next. Compressive strength is tracked by EN 12190, and the static modulus of elasticity is verified by EN 13412 to prevent an excessively stiff patch from peeling away from the surrounding concrete under load. Pull-off adhesion to prepared concrete is tested by EN 1542; the polymer modification raises the failure plane from the interface into the concrete surface when the substrate has been correctly prepared. The polymer modification also contributes to a lower elastic modulus measured under EN 13412, but the system remains inapplicable where the underlying substrate is structurally active unless a full structural strengthening system is provided. Terminal products include hand-applied and wet-sprayed spall repairs, edge reconstruction, and concrete repair materials for car park decks, marine columns, and industrial floor joints.
Below 1.5 wt% the grout remains too brittle for the repeated thermal excursions of heated screeds, and above 2.5 wt% the mixed paste leaves a tenacious polymer film on porcelain tile edges during the washing step; the practical window is therefore narrow. The dry blend contains white or grey Portland cement, 0–0.5 mm calcium carbonate filler, iron oxide pigment, and a powdered defoamer; the polymer powder is added after pigments to avoid colour streaking caused by localised resin adsorption onto pigment particles. Mixing is carried out with 0.20 L to 0.24 L water per kg of grout to obtain a slump-free paste that can be forced into joints of 1 mm to 8 mm; after 15 min, the surface is cleaned with a hard foam float and a minimal amount of water to avoid washing binder from the joint. The cured grout is classified according to EN 13888:2009 CG2 WA, which requires water absorption below a defined limit and tensile adhesion after exposure; for high-traffic floor grouting, CG2 WA is the minimum designation because it confirms improved water resistance and abrasion resistance under the standard’s test regime. Terminal products include pigmented floor grouts for porcelain and glass mosaic, especially in swimming pools and exterior walkways where water resistance and colour stability are required.
In gypsum-based patching compounds, VINNAPAS 4023 N interacts with polycarboxylate-based superplasticizers differently than with naphthalene sulfonate condensates, and the dosage must be set against the initial setting time of the calcium sulfate binder because the polyvinyl alcohol-protected dispersion can retard the hydration of anhydrite and delay peak temperature development. A typical addition lies between 2.0 wt% and 3.5 wt% of dry mix; the powder is dispersed in the mixing water before the hemihydrate and retarder are sheared to avoid forming polymer-rich lumps that become visible as transparent spots after sanding. The trowel-applied patching compound is built up in 1 mm to 3 mm passes over gypsum board joints, plaster substrates, or gypsum fibreboard; open time and wet edge build-up are checked with a Vicat needle or temperature rise curve to confirm that the setting acceleration from the retarder is not suppressed by the polymer film. The cured film shifts the bending failure pattern away from brittle edge spalling when tested as a gypsum plaster according to EN 13279-2; the dosage is confirmed by load-deflection curve correlation with powder content. The use of the powder is nevertheless constrained where gypsum products must maintain an air permeability above a specified level because the continuous polymer phase may reduce vapour transmission. Terminal products include joint fillers for drywall and roof boards, floor repair compounds for gypsum-based screeds, and gypsum adhesives for mineral fibre and foam insulation panels.
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Manufacturer technical literature identifies VINNAPAS 4023 N as a redispersible polymer powder derived from a vinyl acetate-ethylene copolymer. In dry-mix mortar production, the powder is added at the dry blending stage; during mixing with water, the polyvinyl alcohol protective colloid dissolves and the polymer particles redisperse into the aqueous phase. The material is supplied as a white to off-white free-flowing powder in 25 kg paper bags, 500 kg big bags, or bulk silo containers. The bulk density typically lies between 450 kg/m³ and 600 kg/m³, with a solids content of 99% ± 1% and a residual moisture content below 1.0% by manufacturer method. The ethylene comonomer acts as an internal flexibiliser, shifting the glass transition temperature to approximately -7 °C and reducing the minimum film forming temperature to approximately 0 °C. Under REACH Regulation (EC) No 1907/2006 and RoHS Directive 2011/65/EU, the compliance status of the product as supplied should be verified against the current manufacturer safety data sheet.
| Property | Typical value | Basis |
|---|---|---|
| Polymer base | Vinyl acetate-ethylene copolymer | Manufacturer technical datasheet |
| Appearance | White to off-white powder | Visual inspection |
| Bulk density | 450–600 kg/m³ | Manufacturer method |
| Solids content | 99% ± 1% | Gravimetric method |
| Ash content | 12% ± 2% | Loss on ignition |
| pH of 10% redispersion | 6.5–8.0 | Manufacturer method |
| Minimum film forming temperature | approximately 0 °C | Manufacturer method |
| Glass transition temperature | approximately -7 °C | DSC |
Storage at temperatures below 30 °C and relative humidity below 70% is recommended. The powder is hygroscopic; polyvinyl alcohol present in the protective colloid can absorb atmospheric moisture, causing particle agglomeration and loss of free-flow properties. In silo installations, the drying air should have a dew point of -20 °C or lower. Manufacturer guidance commonly assigns a shelf life of 6 months when the product remains in unopened containers. If block formation is observed after prolonged storage, the powder should not be forced through rotary valves; lumps should be screened through a 400 µm sieve before use. Dust control and earthing are necessary because the organic powder can form combustible dust-air mixtures.
At the onset of mixing, water contacts the redispersible powder and dissolves the polyvinyl alcohol protective colloid. The water-insoluble vinyl acetate-ethylene copolymer particles are released and dispersed. As the mortar hardens, water is consumed by cement hydration and evaporation; the polymer particles pack into capillary pores and between hydration products. Above the minimum film forming temperature of approximately 0 °C, the particles coalesce into a continuous polymer film. Because the glass transition temperature is approximately -7 °C, the film remains in a rubbery state at ordinary service temperatures and can bridge microcracks under tensile stress. At curing temperatures below 5 °C, film formation may be delayed; published data for this specific low-temperature configuration are limited, and cold-weather trials should be conducted before production use. The film-building process is also influenced by cement alkalinity; pH values above 12 during hydration stabilise the redispersed particles but can increase the hydrophilic character of the dried film.
Anhydrite and gypsum-based mixes present a lower pH environment, typically in the range 10 to 11 after hydration. In these systems, redispersion still occurs, but the rate of film coalescence may be slower because less water is bound by hydration in the early phase. Formulation work with calcium sulfate floor underlayments should include flexural and compressive strength testing per EN 13813 and EN 1015-11, because the polymer film contributes to flexural strength but can slightly reduce compressive modulus.
Addition level in cementitious tile adhesives is bounded by the need to maintain tensile adhesion under water immersion and heat ageing while avoiding excessive air entrainment. Manufacturer starting formulations place VINNAPAS 4023 N at 2.0% to 4.5% of total dry mix weight for C2-class adhesives. At the lower end, tensile adhesion after water immersion measured per EN 1348 may not reliably exceed the 0.5 MPa threshold required for EN 12004 C2 classification unless other flexibility additives compensate. At addition rates above 5.0%, mortar viscosity increases and air content can rise, reducing 28-day compressive strength measured by EN 12190. The practical upper limit is therefore formulation-dependent; trials should include air content measurement per EN 1015-7 and wet density measurement per EN 1015-6. In repair mortars specified under EN 1504-3, the powder is often combined with silica fume or metakaolin to control bleed and improve adhesion to prepared substrates.
| Application | Loading, wt% of dry mix | Relevant performance standard |
|---|---|---|
| Cementitious ceramic tile adhesive | 2.0–4.5 | EN 12004, EN 1348 |
| Repair mortar | 3.0–6.0 | EN 1504-3, EN 12190 |
| Self-leveling floor compound | 2.5–5.0 | EN 13813, EN 1015-3 |
Floor screeds and self-leveling underlayments can tolerate higher polymer loadings than tile adhesives because the mixes are more fluid and air removal is assisted by vibration or pin rollers. Starting formulations commonly use 2.5% to 5.0% VINNAPAS 4023 N by dry mix weight. The polymer powder may increase water demand; a polycarboxylate ether superplasticizer is often introduced at 0.05% to 0.15% to maintain a flow diameter of 220 mm to 260 mm when tested per EN 1015-3. Without such adjustment, polymer-induced viscosity can produce pinholes and drag marks in the finished surface. In calcium sulfate-based screeds, the lower pH environment can delay film coalescence; compatibility with set accelerators and retarders must be tested because some amine-based accelerators may destabilise the redispersion.
When a formulator replaces a vinyl acetate homopolymer powder such as VINNAPAS 5010 N with VINNAPAS 4023 N, the principal change is a lower film stiffness and improved low-temperature flexibility. Comparative film data in manufacturer literature indicate that the ethylene comonomer in 4023 N acts as an internal plasticiser; no phthalate plasticiser is required to achieve film elongation. In comparison, homopolymer films typically exhibit higher tensile strength but lower elongation and a higher glass transition temperature. VINNAPAS 5044 N, based on a vinyl acetate-ethylene-vinyl chloride terpolymer, provides greater hydrophobicity and is preferred where water immersion or long-term damp exposure is specified. The difference between 4023 N and 5044 N is therefore centred on water resistance and chlorine content; 4023 N is free of vinyl chloride and is used when chlorinated polymer content is restricted by project specification or environmental policy. Direct substitution without adjusting water demand and defoamer dosage can result in higher mortar viscosity and an increased risk of foam formation.
On production lines using twin-shaft paddle mixers with working capacities of 150 kg to 500 kg, VINNAPAS 4023 N is added after the mineral fractions have been briefly pre-blended. A dry mixing interval of 2 min to 3 min at 80 rpm to 120 rpm is typical. Addition directly onto cellulose ether can produce lumps because both materials compete for available water; therefore the polymer powder and cellulose ether are introduced separately, with the cellulose ether often mixed with a portion of the sand. In continuous auger systems, residence time below 20 s may leave undispersed polymer particles visible as white specks in cured mortar. The use of a defoamer is common because high-shear mixing and the polyvinyl alcohol colloid can stabilise foam; the required defoamer dosage is empirically determined by monitoring mortar density per EN 1015-6. Failure modes observed on production lines include powder bridging in hoppers due to moisture ingress and dust escaping from worn flexible connectors; these are controlled by maintaining dry conveying air and replacing worn seals.
Operational boundaries include storage temperature, humidity and dust control. The powder is combustible as an organic dust; equipment must be earthed and dust concentrations kept below the lower explosion limit. The product is designed for alkaline cementitious and gypsum-based systems; strongly acidic accelerator solutions or amine-based additives may alter redispersion and should be evaluated in small batches. Published data for the use of VINNAPAS 4023 N in high-temperature rapid repair systems above 60 °C is limited; production trials are required because the polymer film may soften and reduce early load-bearing capacity. Furthermore, the powder is not a cement substitute; water/cement ratio control and aggregate packing remain determining factors for final mechanical properties.
