| HS Code | 454851 |
| Product Name | ELOTEX FX2320 |
| Chemical Type | Vinyl acetate-ethylene (VAE) copolymer |
| Physical Form | Redispersible polymer powder |
| Color | White |
| Bulk Density | 400-600 g/L |
| Residue On 400 Micron Sieve | ≤ 10% |
| Moisture Content | ≤ 1% |
| Ph Value | 7-8 |
| Ash Content | 8-15% |
| Minimum Film Forming Temperature | 0 °C |
| Glass Transition Temperature | -5 °C |
| Film Characteristic At Room Temperature | Flexible and transparent |
| Shelf Life | 12 months from production date |
| Packaging | Multilayer paper bags |
| Application Dosage | Typical dosage 5-30% of mineral binder weight |
As an accredited ELOTEX FX2320 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | ELOTEX FX2320 is supplied as a free-flowing powder in 25 kg multi-wall paper bags with polyethylene liner, palletized and shrink-wrapped. |
| Container Loading (20′ FCL) | ELOTEX FX2320 is loaded into a 20-foot FCL, palletized, shrink-wrapped, and securely braced to ensure safe transport. |
| Shipping | ELOTEX FX2320 is a redispersible polymer powder supplied in bags. It is non-hazardous for transport under standard shipping regulations. Protect from moisture and store in a cool, dry place. Avoid generating dust during handling. |
| Storage | Store ELOTEX FX2320 in its original, unopened packaging in a dry, cool, and well-ventilated area. Protect from moisture, rain, and high humidity, as contact with water can cause caking or reduced performance. Avoid direct sunlight, heat sources, and excessive pressure. Keep bags off bare concrete floors on pallets. Use first-in, first-out stock rotation; shelf life is typically 12 months under proper storage conditions. |
| Shelf Life | Shelf life: 12 months from date of production when stored unopened in original packaging under dry, cool conditions. |
In large-format porcelain tile fixing, where porcelain body water absorption is below 0.5% by mass under ISO 13006 Group BIa, adhesion development depends less on mechanical keying than on polymer film continuity at the tile–adhesive interface. FX2320 is incorporated in dry-mix cementitious tile adhesives at 2.5–4.0 wt% of the dry mortar batch. The dry blending step is typically run in a twin-shaft compulsory mixer with ploughshare rotor for 3–5 min at 90–110 rpm, with the polymer powder added after fine silica sand and cement to avoid static clumping on the mixer walls. The wet mixing step uses potable water at 22–26°C and a water-to-powder ratio of 0.22–0.26. After an initial 2 min paddle mixing at 600 rpm, the adhesive is allowed to slake for 5 min and then remixed for 30 s. The material is applied with a 10 mm × 10 mm notched trowel, producing a combed bed of 3–6 mm after tile embedding. Compliance testing follows EN 12004-1 and EN 1348, with classification under ISO 13007-2 typically C2TE or C2TE S1 depending on the exact cement and cellulose ether combination. On production lines, variations in sand fines below 0.063 mm can shift water demand by 3–5%; when FX2320 is held at a fixed 3.0 wt%, open time measured by the EN 1348 method may drift from 30 min toward 18 min if fine content rises. The terminal products are polymer-modified adhesives for large-format porcelain slabs, low-porosity glass tiles, and thin-bed installations on gypsum screeds, where conventional unmodified C1 adhesives show insufficient wetting and early shrinkage.
Flexible cementitious waterproofing membranes formulated with FX2320 are engineered to coalesce into a continuous polymer film inside the capillary pore network after cement hydration begins. The addition ratio in dry-mix waterproofing formulations is 3.0–5.0 wt% of the powder blend. Compliance is evaluated under EN 14891, with tensile adhesion measured to EN 1348 after water immersion and heat ageing, and crack-bridging capacity measured to EN 1062-7 at -5°C and 0.75 mm crack opening for typical flexible systems. The manufacturing process combines CEM I 42.5 R, quartz sand 0.1–0.3 mm, ground calcium carbonate, a powder defoamer, and the polymer powder in a low-shear dry blender, then wet-mixes with a 400 rpm paddle stirrer at a water-to-powder ratio of 0.22–0.26 to avoid air entrainment. The first coat is applied by brush or trowel at 1.0–1.5 mm wet thickness, with glass-fibre mesh embedded at internal corners and floor-wall junctions. A second coat is applied after 4–6 h at 23°C and 50% RH to reach a total dry film thickness of 2–3 mm. Curing before immersion testing is 7 days at 80–90% RH followed by 21 days at 23°C and 50% RH. Field experience shows that at dosage above 5.0 wt%, the wet slurry may slump before set and produce thickness variation exceeding 0.5 mm; at dosage below 3.0 wt%, crack bridging at -5°C can fall below 0.5 mm, failing the minimum requirement for many exterior applications. Terminal products include one-component flexible cementitious waterproofing membranes for balconies, terraces, wet rooms, and potable water tanks where the system is certified under local potable-water contact regulations.
When a blend of ordinary Portland cement and calcium aluminate cement is used in self-leveling compounds, hydration kinetics and polymer coalescence compete for free water during the first 24 h. FX2320 is added at 1.5–3.0 wt% of the dry self-leveling formulation to reduce brittleness and improve adhesion to ceramic tiles, PVC, and LVT substrates. Governing standards include EN 13813 for cementitious screed materials and ASTM C1708/C1708M for self-leveling mortars, with flow behaviour measured by the ring flow method of DIN EN 12706. The dry production line typically uses a vertical conical screw mixer or a horizontal double-ribbon blender; wet mixing is continuous in a colloidal mixer with a high shear rotor-stator head, after which the slurry is pumped at 20–40 L/min through a piston or rotor-stator pump. On the application site, the material is poured onto the primed substrate and moved with a gauge rake, then deaerated with a spiked roller within 10 min of mixing. Typical initial ring flow values reported by formulators are 140–160 mm at 23°C, with 130–150 mm retained after 20 min; published data for this specific FX2320 configuration is limited, so site flow checks are required when local humidity exceeds 70% RH. Dosage above 3.0 wt% may reduce early compressive strength and extend setting, while dosage below 1.5 wt% may not provide sufficient film formation in layers under 3 mm over non-absorbent substrates. Terminal products are self-leveling underlayments and thin-bed screeds used under ceramic tile, LVT, vinyl sheet, and epoxy coatings, typically applied in thicknesses from 2 mm to 10 mm.
Basecoat mortars for exterior insulation finishing systems are specified to absorb thermal and hygric movement while embedding alkali-resistant glass fibre mesh into the wet mortar. FX2320 is added at 2.0–4.5 wt% of the dry basecoat formulation. Compliance for the system is governed by ETAG 004 and its current EAD 040083-00-0404; testing includes tensile adhesion to insulation board, impact resistance, and thermal cycling resistance after mesh embedment. The manufacturing process dry-blends white CEM I 52.5 R, quartz sand 0.1–0.5 mm, cellulose ether, starch ether, and the polymer powder in a horizontal ploughshare mixer. Wet mixing uses a water-to-powder ratio of 0.21–0.24. The basecoat is applied at 3–5 mm wet thickness by stainless steel trowel or hopper spray, and a 160 g/m² alkali-resistant glass fibre mesh is immediately embedded using a trowel, with a second pass applied after 24 h where high impact resistance is required. Field data from production-scale rendering crews indicate that substrate temperatures below 5°C or surface dew point above 3°C can delay polymer film formation beyond 48 h, producing whitening and reduced mesh bond after thermal cycling. Formulators must also consider that organic content from polymer powder above 5 wt% may change reaction-to-fire classification; published multipoint Euroclass data for this specific basecoat configuration is limited and requires system-level evaluation under EN 13501-1. Terminal products are reinforced basecoat mortars and insulation board adhesives for expanded polystyrene and mineral wool systems, used in exterior wall insulation assemblies.
The addition of FX2320 to polymer-modified cementitious repair mortars increases flexural toughness and reduces restrained shrinkage cracking, but the wet-mix consistency must remain compatible with trowel and spray application on vertical and overhead concrete surfaces. The formulation addition ratio is 2.0–4.0 wt% of the dry mortar. Compliance is set by EN 1504-3 for structural and non-structural repair products, with compressive strength class, chloride ion content, and shrinkage evaluated according to the relevant part of the standard; ASTM C928/C928M may also apply for packaged rapid-hardening cementitious materials. The downstream process includes substrate preparation by abrasive grit blasting to a concrete surface profile of CSP 5 per ICRI Guideline No. 310.2R, removal of laitance, and pre-saturation of the concrete surface to saturated surface-dry condition. The dry mortar is mixed with 0.14–0.18 water-to-powder ratio in a forced-action mixer, then applied by steel trowel or low-pressure wet spray in layers up to 25 mm. Curing is divided into a wet phase of 7 days under wet burlap and polyethylene sheeting, followed by 21 days of air curing at 20°C and 65% RH. Dosage above 4.0 wt% may reduce compressive strength below the minimum required for R3 repair mortars and increase creep under sustained load; dosage below 2.0 wt% may not impart sufficient adhesion to saturated concrete substrates. Terminal products are polymer-modified R2 and R3 repair mortars for concrete spall repair, edge restoration, and patching of structural elements in civil and industrial structures.
Gypsum-based joint fillers and skim coats follow a different polymer film formation sequence because hydration of calcium sulphate hemihydrate occurs within 30–120 min, faster than cementitious matrices. FX2320 is used at 0.5–2.0 wt% of the dry powder compound to improve adhesion to gypsum board paper and reduce edge cracking at board joints without delaying sanding excessively. The applicable product standards are EN 13279-1 for gypsum binders and gypsum plasters and ASTM C475/C475M for joint treatment materials; testing includes setting time, bond, and crack resistance on taped joints. The production process dry-blends beta-hemihydrate gypsum, limestone filler 0–63 µm, cellulose ether, a set retarder, and the polymer powder in a conical screw mixer; wet mixing is carried out with a 0.45–0.55 water-to-powder ratio using a stainless steel paddle at 500 rpm for 2 min. The compound is applied with a 150 mm stainless steel joint knife or skimming trowel, bedding paper tape in the first pass and applying a second and third pass after drying intervals of 4–6 h. Sanding is performed after 24 h using 150–220 grit abrasive screens. Addition above 2.0 wt% may reduce sandability and produce surface film accumulation on trowels; addition below 0.5 wt% may not prevent joint cracking under cyclic humidity. Terminal products are dry-mix gypsum joint fillers, skim coats, and patching compounds for gypsum board interior partition systems.
| Application context | Governing standard | Typical FX2320 addition | Key test method |
|---|---|---|---|
| Large-format porcelain tile adhesive | EN 12004-1, ISO 13007-2 | 2.5–4.0 wt% | EN 1348 tensile adhesion |
| Flexible cementitious waterproofing membrane | EN 14891 | 3.0–5.0 wt% | EN 1062-7 crack bridging |
| Cementitious self-leveling underlayment | EN 13813, ASTM C1708/C1708M | 1.5–3.0 wt% | DIN EN 12706 ring flow |
| EIFS basecoat and insulation board adhesive | ETAG 004, EAD 040083-00-0404 | 2.0–4.5 wt% | EN 13501-1 reaction-to-fire |
| Polymer-modified repair mortar | EN 1504-3, ASTM C928/C928M | 2.0–4.0 wt% | EN 1504-3 compressive and shrinkage |
| Gypsum joint filler and skim coat | EN 13279-1, ASTM C475/C475M | 0.5–2.0 wt% | ASTM C475/C475M bond and crack resistance |
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ELOTEX FX2320 is a redispersible polymer powder prepared from a vinyl acetate-ethylene copolymer and supplied as a spray-dried, free-flowing powder. It is intended for dry-mix mortars in which the polymer must redisperse upon addition of water and form a coherent film during cement hydration. Manufacturer-published technical data for this grade list a bulk density in the range of 400–600 g/L when measured to DIN EN ISO 60, residual moisture not exceeding 1.5 wt%, a pH of 7–9 in a 10% aqueous dispersion, and residue on 400 µm below 2%. The glass transition temperature is reported near −7 °C by differential scanning calorimetry to ISO 11357-2, and the minimum film-forming temperature is approximately 0 °C. ELOTEX FX2320 therefore belongs to the low-glass-transition VAE segment of redispersible powders, in which ethylene comonomer reduces chain crystallinity and internal plasticization lowers film coalescence temperature without external coalescing solvents. The powder is commonly added at 1.5–4.0 wt% of dry mortar in cementitious tile adhesives, self-leveling underlayments, and repair mortars. The main functional differences relative to vinyl acetate homopolymer powders are lower film-forming temperature, improved flexibility, and better wet adhesion to low-porosity substrates.
In dry-mix production, ELOTEX FX2320 is blended with cement, graded silica sand, limestone filler, and cellulose ether in ploughshare or twin-shaft batch mixers. Because the powder is a thermoplastic dispersion polymer, the addition point should follow aggregate cooling below 40 °C. Production-scale batches with hot sand above 55 °C can show caking around mixer shafts and screen blinding; the failure mode is partial film formation on residual moisture at the powder surface. For this reason, dry-mix plants typically specify mixer jacket temperatures below 35 °C and post-mix silo residence times under 4 hours when ambient relative humidity exceeds 60%. The powder should be stored in sealed bags or silos at 5–30 °C and below 65% relative humidity; opened bags should be consumed within 48 hours in high-humidity climates.
Redispersion of ELOTEX FX2320 in a cementitious mortar occurs when the water-soluble protective colloid dissolves and releases primary polymer particles, typically in the size range of 1–10 µm. The particles distribute through the aqueous phase and accumulate at air-water interfaces and on hydrating cement grains. As cement hydration consumes free water, capillary pressure drives compaction of the polymer particles, followed by interdiffusion of chains across particle boundaries. This two-stage mechanism—colloid dissolution and capillary film formation—requires that the pH of the pore solution remains above the minimum redispersion threshold of the protective colloid. In ordinary portland cement systems, pore solution pH during the first 24 hours ranges from 12.5–13.5, which is compatible with the VAE colloid system. The resulting polymer film bridges microcracks between cement hydrates and unhydrated filler surfaces. Tensile adhesion of tile adhesives prepared to EN 12004 is measured according to EN 1348; formulations containing ELOTEX FX2320 at 2.0–3.0 wt% normally meet the 0.5 N/mm² initial tensile adhesion requirement for C1 adhesives and are designed to exceed the 1.0 N/mm² threshold for C2 when tested after water immersion and heat ageing. Film formation can be retarded if the mortar is exposed to standing water before initial set; site work at relative humidity above 85% and substrate temperatures below 5 °C requires extended open time and reduced water dosing.
In self-leveling underlayments, the role of ELOTEX FX2320 is not limited to tensile adhesion. At addition levels of 2.0–4.0 wt% on dry mix, the powder reduces water demand while maintaining flow, because the spherical polymer particles reduce interparticle friction in the fresh mortar. Spread flow of cementitious self-leveling compounds is measured by the truncated cone or ring method according to EN 12706; formulations with 2.5 wt% ELOTEX FX2320 and water demand values of 20–24 wt% commonly show initial flow diameters of 140–160 mm depending on superplasticizer type. At higher addition levels above 5.0 wt%, air entrainment can increase from below 2.0 vol% to above 5.0 vol%, and the 28-day compressive strength retention measured to ASTM C109 may fall by more than 15%. The practical mixing influence is compounded in pump-applied screeds, where shear during mixing generates foam; producers therefore add tributyl phosphate or silicone defoamers at 0.05–0.15 wt% to stabilize air content. Published data for ELOTEX FX2320 in a specific pump-applied self-leveling formulation are limited, but the general VAE redispersible powder response indicates that dosage at the upper end should be validated by field trials for segregation, bleeding, and surface tack.
In C2-class cementitious tile adhesives meeting EN 12004, the addition of ELOTEX FX2320 affects open time, tensile adhesion, and deformability. Open time is measured by laying tile adhesive, waiting 10, 20, or 30 minutes, then placing tiles and pulling them according to EN 1348; the classification requires a minimum 20-minute open time for C2 adhesives under standard conditions. In optimized formulations containing 2.0–3.0 wt% ELOTEX FX2320 and medium-viscosity cellulose ether, water demand is typically 23–27 wt%, and tensile adhesion after 28 days is often in the range of 1.5–2.5 N/mm², but exact values depend on cement type, filler packing, and surface porosity. The principal difference between ELOTEX FX2320 and a high-glass-transition VAE powder is the lower film-forming temperature, which improves adhesion on dense concrete and porcelain tiles at substrate temperatures of 5–15 °C. Low-glass-transition films can exhibit reduced blocking resistance; in adhesive formulations packaged in warm pallets above 35 °C, surface blocking of powder granules can occur if anti-blocking additives are insufficient. Production-scale tile adhesive blending with twin-shaft mixers requires that the polymer be added in the final third of the mixing cycle; adding all powder at once can create fines agglomeration on the mixer blades.
Relative to a vinyl acetate homopolymer redispersible powder, ELOTEX FX2320 displays a lower glass transition temperature and a lower minimum film-forming temperature, which reduces the number of ambient application conditions in which a coherent film cannot form. Homopolymer grades often have minimum film-forming temperatures above 10 °C and require higher addition levels or external coalescing aids to match low-temperature adhesion. Relative to styrene-acrylate and acrylic ester redispersible powders, the VAE backbone of ELOTEX FX2320 is generally compatible with cementitious pore-solution alkalinity and provides stable redispersion without additional pH adjustment. Acrylic powders may offer higher water resistance and UV resistance but can introduce higher air entrainment and higher formulation cost. The specific performance boundary of ELOTEX FX2320 is water immersion durability: the ethylene comonomer improves water resistance compared with polyvinyl acetate homopolymer, but the film remains a thermoplastic, water-dispersible polymer, so long-term ponded-water exposure after hardening can cause film swelling and partial strength reduction. Published data for this product in fully immersed structural applications are limited; design for permanent immersion should not assume durability from the polymer alone.
| Polymer system | Minimum film-forming temperature | Adhesion after water immersion | Typical addition range in cementitious dry mixes |
|---|---|---|---|
| ELOTEX FX2320 vinyl acetate-ethylene copolymer | approx. 0 °C | good; dependent on film coalescence during hydration | 1.5–4.0 wt% |
| Vinyl acetate homopolymer | often above 10 °C | lower; greater water uptake and film softening | 2.0–5.0 wt% |
| Styrene-acrylate or acrylic ester powder | variable; can be below 5 °C | generally higher water resistance | 1.5–3.5 wt% |
In tropical production environments, the main batch failure mode with ELOTEX FX2320 is partial redispersion caused by moisture uptake during storage. The powder is hygroscopic because the polyvinyl alcohol protective colloid absorbs water above 65% relative humidity. In a warehouse at 30 °C and 75% relative humidity, open-top hoppers can show caking within 24 hours; the caked granules do not fully break down under normal mortar mixing at 500–900 rpm and can leave polymer agglomerates in the finished mortar. Dry-mix producers therefore maintain silo air conditioning below 30 °C and 60% relative humidity, dose the powder through rotary valves rather than vibratory feeders, and specify pre-drying of sand to below 0.2 wt% moisture before blending. If the powder is stored in paper bags, stacking limit should be validated to avoid compaction blocking; block-resistant packaging may be required in coastal regions. Opened bags are consumed within one shift to prevent moisture transfer in premixed formulations.
In gypsum-based self-leveling compounds, ELOTEX FX2320 addition levels of 1.0–2.5 wt% can improve surface hardness and abrasion resistance while reducing dusting. The polyvinyl alcohol colloid may retard gypsum hydration at higher dosage; the effect is measurable by Vicat setting-time extension to ASTM C472. In AIII/AII hemihydrate systems with pH 7–10, polymer films deposit around gypsum crystal bundles and increase flexural strength. Control of setting accelerator dosage becomes critical above 2.0 wt% because the polymer competes for water and slows crystal dissolution. Published data for ELOTEX FX2320 specific to pure gypsum systems are limited, so dosing should be calibrated with batchwise Vicat curves. The powder should not be combined with pH-modifying additives outside the 7–10 range without prior testing.
In polymer-modified repair mortars, ELOTEX FX2320 improves adhesion to prepared concrete substrates and contributes to lower capillary water absorption. The polymer film blocks capillary pores after curing, so carbonation resistance and freeze-thaw resistance can improve relative to unmodified mortar. Compressive strength is generally reduced relative to an unmodified mortar at the same water-to-binder ratio; the mix design compensates by lowering water demand. Tensile adhesion for concrete repair products is measured to EN 1542, and the relevant material classification is given in EN 1504-3; formulations containing ELOTEX FX2320 should be tested directly against the required class thresholds for the intended exposure class. The polymer addition should be maintained within the validated range because overdosing can increase air content and reduce compressive strength, while underdosing fails to produce a continuous polymer film across the capillary pore network.
