| HS Code | 464259 |
| Polymer Type | Vinyl Acetate-Ethylene (VAE) Copolymer |
| Physical Appearance | White free-flowing powder |
| Protective Colloid | Polyvinyl Alcohol |
| Bulk Density | Approx. 450-550 g/L |
| Particle Size | Maximum 4% retained on 400 µm sieve |
| Ash Content | Approx. 10-14% |
| Residual Moisture | Max. 2% |
| Ph 10 Redispersion | 7-9 |
| Minimum Film Forming Temperature Mfft | Approx. 4°C |
| Glass Transition Temperature Tg | Approx. -4°C |
| Redispersibility | Excellent in water |
| Anti Caking Additive | Included |
As an accredited ELOTEX FL1900 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | ELOTEX FL1900 is supplied as a free-flowing powder in 25 kg multilayer paper bags with a polyethylene inner liner. |
| Container Loading (20′ FCL) | ELOTEX FL1900 loaded in 20′ FCL: palletized, secured, labeled, moisture-protected, and ventilated for safe transport. |
| Shipping | ELOTEX FL1900 ships as a free-flowing polymer powder in 20 kg multi-ply paper bags with a polyethylene liner, shrink-wrapped on pallets. It is non-hazardous for road, sea, and air transport. Keep pallets dry, protected from moisture, and handle gently to avoid bag damage during transit. |
| Storage | Store ELOTEX FL1900 in its original, unopened packaging in a cool, dry area away from direct sunlight and sources of heat. Protect it from moisture and humidity to prevent caking or degradation. Keep containers tightly sealed when opened and use promptly. Under proper conditions, shelf life is typically around six months. |
| Shelf Life | Shelf life: 12 months from manufacture when stored unopened in original packaging in dry, cool conditions. |
Polymer modification of a C2-class cementitious tile adhesive dry blend is implemented by dry-dispersing 2.0–3.5 wt% ELOTEX FL1900 relative to total dry mortar mass into a horizontal ploughshare mixer operating at 30–50 rpm for a 1,000 L working volume. The VAE-based redispersible polymer powder is combined with CEM I 42.5 N cement, 0.1–0.6 mm graded quartz sand, cellulose ether with a viscosity of 15,000–40,000 mPa·s in a 2% aqueous solution at 20°C, and calcium formate. Wet mixing at 600–900 rpm for 120–180 s redisperses the polymer into the aqueous phase; subsequent cement hydration raises ionic strength and pH above 12.5, causing film coalescence at the mortar–air interface and at the tile–mortar boundary. Compliance is established under EN 12004-1:2017, ISO 13007-1:2014, and ISO 13007-2:2014; a C2TE S1 adhesive is expected to retain tensile adhesion strength of at least 1.0 N/mm² after water immersion, heat ageing, and freeze–thaw cycles, while S1 transverse deformation requires at least 2.5 mm. Production-scale dry-blend lines show that powder premix segregation increases when the mixer fill ratio exceeds 70% of gross volume; the resulting wet mortar displays polymer agglomerates on notched trowel ridges and open time falls below 20 min. The mortar is applied with a 10–15 mm notched trowel, the tile is embedded with a lateral sliding motion, and the assembly is adjusted within 10–15 min before skin formation. Terminal finished products include C2TE and C2TE S1 tile adhesives for large-format porcelain tiles with water absorption below 0.5%, low-porosity stone, glass mosaic, and thin porcelain panels installed over heated screeds.
In cementitious self-leveling underlayment compounds, ELOTEX FL1900 is added at 1.0–2.5 wt% of the dry formulation to balance flow and early flexural strength without delaying cement hydration beyond the 4–6 h walk-on window required by EN 13813:2002, Table 1. The dry blend typically contains calcium aluminate cement or alumina cement in combination with ordinary Portland cement, anhydrite or calcium sulfate, 0.1–0.5 mm silica sand, polycarboxylate superplasticizer, and defoamer. Mixing at 600–800 rpm with water addition of 20–24 wt% produces a flow ring spread of 240–260 mm after 5 min; the viscosity profile depends on polymer redispersion, cement dissolution, and ettringite nucleation. The polymer contributes flexural strength by forming interpenetrating organic bridges between hydration products after drying; a CT-C25 F6 screed under EN 13813:2002 requires flexural strength not less than 6 MPa and compressive strength not less than 25 MPa at 28 days. The process conflict is most pronounced when the superplasticizer reduces water addition below 20 wt%; incomplete polymer wetting before initial ettringite formation leaves brittle microdomains, and 24-hour flexural strength can fall below the value obtained at 22 wt% water addition. On production lines using 1,500–2,000 L horizontal mixers, batch-to-batch variance in polymer dispersion is observed when the powder is added after the superplasticizer rather than before; the resultant wet compound exhibits non-uniform flow curves and a reduction of 10–15 mm in initial flow diameter. Application is performed by pump-assisted discharge through a 10–20 mm flexible hose onto a primed substrate, followed by spike roller or porcupine roller to release entrapped air; underfloor heating pipes or acoustic mats are embedded before final leveling. The hardened layer is ground or primed before receiving terminal finished products: vinyl sheet, luxury vinyl tile, epoxy coatings, polyurethane coatings, and ceramic tile overlays.
In external thermal insulation composite systems, the base coat mortar over expanded polystyrene or mineral wool is formulated with 2.5–4.0 wt% ELOTEX FL1900 to maintain adhesion to the insulation substrate after hydrothermal cycling and to provide a deformable matrix around the embedded glass fibre mesh. The relevant compliance framework is ETAG 004 for mechanically fastened systems, or EAD 040083-00-0404 for bonded systems, with additional requirements under EN 998-1:2017; bond strength to EPS board is expected to exceed 0.08 MPa with cohesive failure in the insulation substrate under dry and conditioned states. The dry-mix production process incorporates CEM I or CEM II cement, 0.1–1.0 mm limestone and silica sand, cellulose ether, hydrophobic agent, and the polymer powder in a ribbon or ploughshare mixer with powder temperature not exceeding 40°C; thermal excursions above 45°C may soften the VAE powder and foul mixer blades. The base coat is applied by steel trowel or airless spray at a total wet thickness of 5–10 mm; the glass fibre mesh is embedded in the lower third of the fresh layer, and a second pass is applied after the first has set but not fully dried. Operational boundaries include a substrate temperature window of +5°C to +30°C and protection from rain for 24–48 h; application outside this window may produce surface film formation before cement hydration, leading to delamination. Terminal finished products are reinforced base coat adhesive mortars for EPS, XPS, and mineral wool insulation boards.
Where liquid-applied cementitious waterproofing is specified under EN 14891:2017 for crack-bridging class CM02, the dry powder component is modified with 4.0–8.0 wt% ELOTEX FL1900 to reduce the elastic modulus of the cured membrane and increase strain capacity across static cracks. The single-component formulation is prepared by mixing the dry mortar with water at 35–40 wt% for 2–3 min at 600 rpm, then left to slake for 5 min before a second short remix. Substrate preparation includes removal of laitance, dust, and oil, followed by priming with a diluted dispersion of the same powder-liquid system. The first coat is applied by brush, trowel, or roller at 1.0–1.5 kg/m² wet consumption; the second coat is applied at right angles after the first has cured for 4–6 h but within 24 h. Total dry film thickness is maintained at 2.0–3.0 mm to meet the standard's crack-bridging requirement of at least 0.75 mm at 23°C and 50% relative humidity; some specifications additionally assess low-temperature crack-bridging resistance at -5°C. The limiting process condition is air entrainment at addition rates above 8.0 wt%; published data for this specific high-dosage configuration is limited, but wet membranes may retain microfoam that reduces water impermeability under 1.5 bar hydrostatic pressure. Incompatibilities include amine-based liquid additives and acidic substrates, which interfere with VAE film formation and lower early wet adhesion. Terminal finished product types include waterproofing slurries for interior wet rooms, balconies, terraces, concrete water tanks, and under-tile waterproof layers beneath ceramic and natural stone installations.
Polymer-modified concrete repair mortars conforming to EN 1504-3:2005 classes R3 and R4 are produced with 1.5–3.0 wt% ELOTEX FL1900 added to a dry blend of CEM I 52.5 N or CEM I 42.5 R cement, silica fume, 0.1–2.0 mm quartz aggregate, plasticizer, and shrinkage-reducing admixture. The inclusion of the VAE powder lowers the 28-day static modulus of elasticity and reduces crack sensitivity when the repair layer is restrained by the older concrete substrate; EN 1504-3 class R4 requires a minimum compressive strength of 45 MPa at 28 days, while class R3 requires 25 MPa. Production experience from concrete repair gunning lines shows that dry-mix products with RDP above 4.0 wt% may generate fine particulate buildup on vent filters of continuous mixing units, reducing output by 15–20%; pre-drying of sand to residual moisture below 0.5% is necessary when ambient relative humidity exceeds 60%. Substrate preparation follows EN 1504-10 and includes grit blasting to remove weak concrete and expose sound aggregate, producing a rough surface with a minimum average roughness of 3.0 mm. The repair mortar is applied by trowel, low-pressure wet spray, or dry gunite after a bonding bridge is applied to the saturated surface-dry substrate. Curing is initiated with polyethylene sheet or curing membrane after the surface has lost its wet sheen; wet curing is maintained for at least 72 h before exposure. Terminal finished product types include structural and non-structural spall repair mortars for balcony edges, bridge decks, parking garage slabs, tunnel linings, and marine splash zones where chloride ingress is controlled by low permeability.
Rarely considered in dry-mortar formulation reviews is the influence of redispersible polymer powder on cementitious tile grout, where the addition of 2.0–4.0 wt% ELOTEX FL1900 shifts the hardened matrix from a brittle cement paste toward a low-porosity composite with improved flexural strength and reduced water absorption. The governing standard is EN 13888:2018; a CG2 WA classification requires flexural strength not less than 3.5 MPa and compressive strength not less than 15 MPa, with water absorption below 2 g after 30 min and 5 g after 240 min when tested according to EN 12808-5. The dry production route combines white or grey Portland cement, 0.01–0.3 mm calcium carbonate and quartz filler, iron oxide pigments, water-repellent additives, and the VAE powder in a low-speed ribbon mixer; blending times above 20 min can produce electrostatic agglomeration of the polymer powder on the mixer shell, resulting in uneven joint colour on the finished wall. The grout is mixed with water at 25–30 wt% to a stiff but workable paste, applied with a rubber float in diagonal strokes across the tiled surface, and left to set for 15–30 min before tooling and cleaning with a damp sponge. Cleanup operations that introduce excess water within the first 24 h may cause polymer migration to the joint surface, producing a visible haze that is difficult to remove without acid washing. Terminal finished product types include CG2 WA grouts for floor and wall tile joints 1.0–10 mm wide in kitchens, bathrooms, swimming pools, and exterior facades.
Competitive ELOTEX FL1900 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!
ELOTEX FL1900 is a redispersible polymer powder based on a vinyl acetate-ethylene copolymer, produced by emulsion polymerisation and subsequent spray drying. The material is supplied as a white powder with a bulk density of 400–600 g/L, residual moisture not exceeding 2.0 %, and residue on ignition of 10–14 % at 1000 °C. In cementitious dry-mix formulations, the powder is added before water introduction and dispersed under standard mortar mixing. After portland cement hydration begins, the redispersed polymer particles coalesce into a continuous film that contributes tensile adhesion, flexural strength, and deformation capacity. Manufacturer technical literature identifies cementitious tile adhesives, flexible waterproofing slurries, self-leveling underlayments, and repair mortars as relevant application areas. The powder is not a cement substitute and does not replace hydraulic binder, but modifies the hardened matrix at typical addition levels below 6.0 wt% of total dry mix. Storage in unopened bags at temperatures below 35 °C and relative humidity below 60 % is required to maintain free-flowing powder characteristics and redispersibility.
In cementitious tile adhesives, addition levels between 2.5 wt% and 4.0 wt% are typical for formulations designed to meet EN 12004:2017 class C2 or C2TE performance. The glass transition temperature of approximately -7 °C and minimum film forming temperature of approximately 0 °C permit film coalescence at lower substrate temperatures without requiring volatile coalescing agents. In tensile adhesion testing, specimens are prepared with a 4 mm by 4 mm notched trowel, and pull-off tests are performed after water immersion, heat ageing, and freeze-thaw cycling as defined by the standard. The polymer primarily increases adhesive strength to dense concrete and reduces the stiffness of the mortar, shifting failure mode from interfacial adhesive detachment toward cohesive rupture within the cementitious layer. On production-scale dry-mix lines, preblending time of 180–300 s in a horizontal ploughshare mixer with a chopper speed of 1,500 rpm is used to ensure powder dispersion without destroying the redispersible polymer particle structure. Prolonged high-shear mixing after water addition can cause exothermic hydration and localised polymer coalescence at the blade surface, leading to lump formation and uneven adhesion.
Mortars containing ELOTEX FL1900 show a progressive film-formation front during drying. At the open surface, water loss accelerates polymer particle packing, and the coalescence rate is controlled by capillary pressure at the air-slurry interface. In formulations with water-retaining cellulose ethers, film formation may be delayed until the internal relative humidity falls below 85 %. This delay can be beneficial for cement hydration because it allows the hydraulic reaction to proceed before the polymer seals the pore network. However, the same mechanism reduces early skin strength in thick-bed applications if the dosage exceeds 4.0 wt%, particularly under cold and humid curing conditions. Therefore, the addition level is normally adjusted after assessing the tensile adhesion retention under the actual site curing regime.
The redispersion mechanism depends on the polyvinyl alcohol protective colloid that surrounds the vinyl acetate-ethylene polymer particle. When the dry powder is added to water at 15–25 °C, the colloid dissolves and releases the polymer spheres into the aqueous phase. In low-water mortar systems with water-to-solids ratios below 0.20, the local polymer concentration at the cement particle surface can exceed 10 wt%, accelerating film formation at the air-slurry interface. This effect is used in skim coats and repair mortars to increase surface cohesion and reduce dusting. The addition of the powder should be made during dry blending, not as a slurry admixture, because premature film formation in the mixing water creates viscous aggregates that are not redispersible under subsequent shear.
In dry-mix production, the dosing accuracy of ELOTEX FL1900 is influenced by bulk density variation and particle morphology. Loss-in-weight feeders require calibration against the actual bulk density of the incoming lot. A deviation of ±5 % in bulk density can shift polymer content by 0.1–0.2 wt% at dosing rates above 50 kg/h. Pneumatic conveying at air speeds above 20 m/s can cause particle attrition and static build-up. Grounding of conveying lines and use of venting filters are standard countermeasures. The powder is added to the mixer from the top hopper during the dry-blend phase, not through the liquid dosing line.
Under EN 13813:2002, self-leveling underlayments are classified by compressive and flexural strength classes rather than by polymer content. In these formulations, ELOTEX FL1900 is incorporated at 0.8–1.5 wt% to modify flow, reduce segregation, and improve adhesion to prepared concrete substrates. Spread flow is commonly determined according to EN 12706 using a ring with an internal diameter of 30 mm. At higher addition levels above 3.0 wt%, air entrainment and retardation can reduce early compressive strength, so dose-response checks are required before production release. The powder is added to the mixed aggregate and cement before the wetting water is introduced. A water-to-powder ratio of 0.18–0.22 typically targets flow values between 140 mm and 180 mm, depending on aggregate grading and water reducer type.
In flexible cementitious waterproofing slurries evaluated under EN 14891:2017, addition levels from 3.0 wt% to 6.0 wt% are common where crack-bridging requirements exceed 0.5 mm. The polymer modifies the cement matrix by reducing elastic modulus and increasing elongation at break. Film formation within capillary pores also provides a secondary barrier to water penetration. Mixing is usually carried out in a high-shear paddle mixer at 800–1,200 rpm for 90–180 s after a brief induction period. The wet material is applied by trowel or spray at a thickness of 1–2 mm per coat. Because the product has a minimum film forming temperature near 0 °C, application below that temperature can yield discontinuous films and reduced crack-bridging performance. Published data for crack-bridging values specific to ELOTEX FL1900 are limited; formulation-specific testing under EN 14891 is required to establish the exact crack width threshold.
In repair mortars formulated under EN 1504-3, the powder is typically used at 2.0–4.0 wt% to improve adhesion to prepared concrete and reduce shrinkage cracking. The lower glass transition temperature of FL1900 relative to higher-Tg VAE powders is advantageous for thin-section repairs exposed to thermal movement, but it can reduce early surface hardness. Therefore, repair formulations are adjusted with the addition of pozzolanic fillers or low-dose calcium sulfoaluminate cement when early strength is a release criterion. Published data for this specific configuration is limited, and performance must be verified against the requirements of the selected EN 1504-3 class.
Typical properties from manufacturer technical literature are listed below. These values are not contractual limits and may vary within normal production variability.
| Property | Typical value | Reference method |
|---|---|---|
| Polymer base | vinyl acetate-ethylene copolymer | — |
| Appearance | white powder | visual |
| Bulk density | 400–600 g/L | ISO 60 |
| Residual moisture | ≤2.0 % | ISO 787-2 |
| pH (10 % aqueous dispersion) | 7.0–9.0 | ISO 787-9 |
| Residue on ignition (1000 °C) | 10–14 % | ISO 3451-1 |
| Glass transition temperature | -7 °C | DSC |
| Minimum film forming temperature | 0 °C | DIN ISO 2115 |
| Oversize > 250 µm | ≤2 % | sieve analysis |
The following table summarises common formulation targets and the standards under which the relevant performance is evaluated. Dosage ranges are starting points for laboratory optimisation and are not independent technical recommendations.
| Application | Typical dosage of FL1900 | Relevant standard | Primary technical function |
|---|---|---|---|
| Cementitious tile adhesive | 2.5–4.0 wt% | EN 12004:2017 | tensile adhesion, flexibility |
| Self-leveling underlayment | 0.8–1.5 wt% | EN 13813:2002 | flow, adhesion, segregation control |
| Flexible waterproofing slurry | 3.0–6.0 wt% | EN 14891:2017 | crack bridging, modulus reduction |
| Repair mortar | 2.0–4.0 wt% | EN 1504-3 | adhesion, shrinkage reduction |
On lines where higher-glass-transition VAE powders are used, replacement with ELOTEX FL1900 generally permits a reduction in coalescing agent demand and improves low-temperature flexibility, but it can also increase adhesion to heated metal tooling during mortar extrusion. The lower glass transition temperature relative to grades above 10 °C gives a softer polymer film at ambient temperature, which is beneficial for crack-bridging but may reduce early scratch resistance in skim coats if dosage exceeds 4.0 wt%. Compared with vinyl acetate-ethylene powders having hydrophobic additives, ELOTEX FL1900 is not claimed to provide primary water-repellent performance. Formulations requiring hydrophobic properties should incorporate separate organosilicon or fatty acid additives. Direct comparative testing against specific ELOTEX grades has limited published data, and selection should be made from dose-response curves generated under the relevant end-use standard.
