| HS Code | 410398 |
| Appearance | White free-flowing powder |
| Polymer Basis | Vinyl Acetate-Ethylene-Acrylate terpolymer |
| Glass Transition Temperature | Approx. 5-15 °C |
| Minimum Film Forming Temperature | Approx. 0-5 °C |
| Average Particle Size | Around 50-100 µm |
| Bulk Density | Approx. 350-550 g/L |
| Solids Content | Approx. 98-99% |
| Ph Of Dispersion | 6.0-8.5 |
| Film Characteristic | Flexible, tough, and water-resistant |
| Redispersibility | Excellent in water, forms stable dispersion |
| Binder Adhesion | High adhesion to cement, gypsum, and wood substrates |
| Elongation At Break | Approx. 200-500% depending on formulation |
As an accredited VAc&E&Acrylate Terpolymer RDP factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packaged in 25 kg multi-layer paper bags with PE liner, palletized and shrink-wrapped for safe transport and storage. |
| Container Loading (20′ FCL) | VAc&E&Acrylate Terpolymer RDP is packed in 25kg bags on pallets, shrink-wrapped, and loaded into a 20′ FCL for safe transport. |
| Shipping | VAc/E/Acrylate Terpolymer RDP is shipped as a free-flowing white powder in moisture-proof multi-layer paper bags or PE-lined drums. Protect from moisture, humidity, and direct sunlight during transport. Store in cool, dry conditions. Non-hazardous, but avoid dust inhalation and use proper PPE when handling. |
| Storage | Store VAc&E&Acrylate Terpolymer RDP in a cool, dry, well-ventilated area. Keep containers tightly sealed to prevent moisture absorption and caking. Avoid exposure to direct sunlight, high temperatures, and humidity. Use within the manufacturer’s shelf life, typically 6–12 months, and handle to maintain free-flowing powder quality. |
| Shelf Life | Shelf life is typically 12 months from manufacture when stored in original, unopened packaging under dry, cool conditions. |
For porcelain tiles, glass mosaics, and low-porosity ceramic panels installed over concrete, heated screeds, or gypsum board, dry-mix cementitious adhesives formulated with a VAc/E/Acrylate terpolymer RDP are specified where EN 12004-1:2017 and ISO 13007-1:2014 require C2-class tensile adhesion and optional T/E/F/S deformability characteristics. The polymer addition ratio in a standard C2 formulation is between 18 kg/t and 35 kg/t of total dry blend, equivalent to 1.8%–3.5% by mass; the lower band is used for absorbent concrete substrates, while the upper band is required for C2S1/C2S2 products that must achieve transverse deformation above 2.5 mm or 5.0 mm respectively when measured to EN 12002:2008. Initial tensile adhesion of C2 adhesives is checked to EN 1348 at not less than 1.0 N/mm² after 28 d, and open time is evaluated to EN 1346. Downstream dry-mix manufacturing is performed in a horizontal compulsory paddle or ploughshare mixer with a chamber fill factor of 0.7–0.8 and paddle tip speed not exceeding 30 m/s; frictional heat must not raise product temperature above 40 °C because the RDP shell can irreversibly coalesce and lose redispersibility. The charging sequence introduces 60%–70% of the required silica sand fraction and Portland cement CEM I 42.5 R or CEM II/A-LL 42.5 R first; cellulose ether, defoamer, optional calcium formate accelerator, and the RDP are added into the moving mix, with final mixing continuing for 3–5 min and total batch time kept below 12 min to avoid over-shear. The finished powder is discharged into poly-lined 25 kg bags at a fill temperature below 35 °C. At the construction site, mixing uses 220–260 mL water per kg dry powder with a 600 rpm drill mixer for 60–90 s, followed by 3 min slaking and a second mix; the adhesive is combed with a notched trowel and checked for skin formation before tile embedding. Terminal product types include C2, C2TE, C2FT, C2ET, and deformable C2S1/C2S2 adhesives for porcelain tiles, glass mosaics, large-format slabs, and natural stone. Storage at relative humidity above 60% or ambient temperature above 30 °C shortens shelf life; bags with compacted lumps larger than 2 cm or with free water contact should be rejected because redispersion and open time will be compromised.
Low-temperature polymer film formation in ETICS base coats becomes critical where external thermal insulation composite systems are evaluated under ETAG 004 and the harmonised EAD 040083-00-0404, and render performance is classified to EN 998-1. The VAc/E/Acrylate terpolymer RDP is added at 20–40 kg/t of total dry base coat (2.0%–4.0%), and at 25–45 kg/t in the separate adhesive mortar used to bond expanded polystyrene or mineral wool boards; the higher level is selected where adhesion to EPS must remain above 0.08 N/mm² after hygrothermal cycling when tested to EN 1015-12. Production in the dry-mix plant uses a twin-shaft compulsory mixer with batch volume utilisation of 70%–80%; the RDP is charged together with limestone filler 0.0–0.5 mm, a powdered hydrophobing agent, an air-entraining agent, and a medium-viscosity cellulose ether. Mixing after final addition lasts 4–6 min, with the mixer jacket temperature controlled to keep powder discharge below 30 °C. On site, the powder is mixed with 200–240 mL/kg water, applied as a first pass of 3–4 mm, followed immediately by embedding of a 160 g/m² alkali-resistant glass-fibre mesh, and then a second pass to achieve a total nominal base coat thickness of 5–8 mm. Terminal articles include cementitious adhesive mortars for EPS and mineral wool boards, glass-fibre-reinforced base coats under decorative renders, and scratch coats for adhesive fixing applications. When air or substrate temperature falls below 5 °C, polymer coalescence is retarded and early rain can wash out uncoalesced RDP, causing pinhole defects and low bond strength; curing compounds or rain protection are mandatory for 24 h after mesh embedment.
Cementitious self-leveling underlayments and screeds designated under EN 13813:2021 incorporate the VAc/E/Acrylate terpolymer RDP at 10–30 kg/t (1.0%–3.0%) of total dry blend. This addition range is deliberately lower than that used in tile adhesives or waterproofing slurries because excess polymer increases air entrainment, reduces flow spread, and shifts surface hardness. The binder system commonly combines Portland cement CEM I 42.5 R, calcium aluminate cement, and anhydrite/alpha-hemihydrate binder; the aggregate and filler phase contains 0.1–0.3 mm silica sand and 10–25 wt% calcium carbonate filler. Powder additives include a polycarboxylate ether superplasticizer, tartaric acid or citrate-based retarder, defoamer, lithium carbonate for early strength, and the RDP. During downstream manufacturing, all components are charged into a low-shear paddle or ribbon mixer; high-shear choppers are disengaged because they can abrade the RDP particles and compromise redispersibility. Final mixing continues for 3–5 min after the last addition, with discharge temperature below 35 °C. Field mixing uses 200–250 mL water per kg powder; the slurry is pumped or poured onto primed or unprimed mineral substrates, then distributed with a pin rake and de-aired with a spiked roller in layers from 1 mm to 10 mm. Terminal product types include bonded and unbonded self-leveling floor compounds, CT-C20/F6 cementitious screeds, and low-stress renovation levelers for old concrete, anhydrite, and ceramic substrates. Class-specific compressive and flexural strength must be verified to EN 13892-2; each additional 1% RDP may reduce compressive strength relative to an unmodified reference, so the final classification must be confirmed after polymer modification.
Where one-component flexible cementitious waterproofing slurries are used on balconies, wet rooms, and water tank interiors, the governing specification is EN 14891:2017, which imposes crack-bridging ability, water impermeability, and bond strength after water contact. The dry component contains Portland cement, 0.1–0.5 mm quartz sand, fine limestone filler, defoamer, water-retaining cellulose ether, and VAc/E/Acrylate terpolymer RDP at 30–60 kg/t (3.0%–6.0%), with the higher range used where the membrane must retain water impermeability after crack-bridging exposure under EN 14891 and where brush application demands a creamy, non-sag consistency. Production is performed in a horizontal compulsory mixer with product temperature capped at 35 °C; the RDP is added after the sand and cement have been pre-blended for 60–90 s, and total mixing after final addition lasts 4–6 min. At the job site, 250–300 mL water per kg powder is mixed with a slow-speed drill at 300–400 rpm to avoid entrapped air; the slurry is applied by brush, roller, or notched trowel in two to three coats, each 0.5–0.7 mm wet, until a total dry film thickness of 1.5–2.0 mm is reached. Terminal products are one-component cementitious waterproofing membranes intended for use under ceramic tile adhesives, liquid-applied tanking slurries for shower walls, and flexible mineral membranes for exterior balcony substrates. The uncured slurry must not dry faster than cement hydration; at 35 °C and wind exposure, a capillary moisture-retaining film or light water mist is required for the first 24 h to prevent polymer film deposition before the cement matrix develops strength.
Because structural repair mortars classified to EN 1504-3:2005 class R4 must retain compressive strength not lower than 45 MPa at 28 d when tested to EN 12190:1998, polymer addition is capped relative to lower-strength R3 formulations. The VAc/E/Acrylate terpolymer RDP is typically incorporated at 20–50 kg/t (2.0%–5.0%), with R4 production rarely exceeding 45 kg/t (4.5 wt%) because higher polymer levels depress modulus and compressive strength. The dry-mix formulation includes Portland cement CEM I 42.5 R or CEM I 52.5 R, 0.1–2.0 mm quartz or granite aggregate, microsilica, polypropylene or alkali-resistant glass fibres, a powdered PCE or melamine-formaldehyde superplasticizer, and the RDP. Manufacturing uses a twin-shaft compulsory mixer with discharge temperature below 40 °C; the powder is packed into moisture-proof bags immediately after mixing. Downstream application is by hand trowel, form-and-pour, or wet-spray in layers from 5 mm to 30 mm; substrate preparation requires removal of weak concrete to a pull-off strength of at least 1.5 N/mm², measured to EN 1542:1999, before application. Terminal articles include R3 and R4 patch repair mortars, vertical and overhead structural repair materials, and polymer-modified concrete replacement materials. Calcium chloride-based set accelerators should not be used above 0.5 wt% in steel-reinforced repair because chloride ion ingress can initiate corrosion, and high early-strength sulphoaluminate accelerators can shift shrinkage behaviour and reduce polymer film flexibility. Published peer-reviewed data isolating this exact terpolymer in R4 wet-spray application at high dosage is limited; pre-qualification at the intended layer thickness is required.
Plasterboard joint finishing in machine-applied systems is specified under EN 13963:2014 and ASTM C474-15; the VAc/E/Acrylate terpolymer RDP is incorporated at 10–35 kg/t (1.0%–3.5%) of dry compound. The dosage is optimised to improve adhesion to paper liner and reduce crack formation at board joints without extending setting beyond the working time required by automatic taping tools. The manufacturing process blends calcium sulphate hemihydrate, 0.02–0.2 mm limestone or dolomite filler, cellulose ether, setting retarder, and the RDP in a low-shear planetary or ribbon mixer; high-intensity mixing is avoided because it can reduce water retention and increase paste temperature. The compound is mixed on site with water at 320–400 mL/kg, applied through mechanical finishing boxes or by hand trowel in thin layers up to 3 mm, and allowed to set before sanding. Terminal product types include ready-mix joint fillers, taping compounds, patching plasters, and spray-applied skim coats for gypsum board surfaces. In environments with relative humidity above 70% or direct contact with steel corner beads, the gypsum matrix may lose surface hardness and the polymer film may soften; fungicide and corrosion-inhibitor packages are mandatory in such formulations.
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VAc&E&Acrylate Terpolymer RDP is a redispersible polymer powder produced by spray drying a stabilized vinyl acetate-ethylene-acrylate terpolymer emulsion with a protective colloid, commonly polyvinyl alcohol, into a free-flowing powder. No universal model designation exists across suppliers; commercial grades carry manufacturer-specific alphanumeric codes that encode the ethylene-to-acrylate ratio, glass transition temperature, protective colloid type, and residual mineral content. The redispersed latex particle diameter is typically between 0.8 μm and 5.0 μm when measured by ISO 13320-1 laser diffraction. In dry-mix mortars, the material is incorporated at 1.5 % to 6.0 % by total dry weight to modify adhesion, flexural strength, freeze-thaw resistance, and low-temperature film formation. The powder does not require coalescing solvents and redisperses under job-site mixing into a latex that coalesces as cement hydration consumes free water. A grade described by a low \(T_g\) suffix may be selected for flexible waterproofing slurries, while a higher acrylate-content grade may be specified for adhesion to non-porous ceramic tile backs. Free films cast from redispersed latex typically show tensile strength of 3 MPa to 8 MPa and elongation at break of 200 % to 600 % when tested by ISO 527-3, depending on protective colloid content and acrylate type.
Model-level technical data sheets list residual moisture, ash content, bulk density, and film-formation temperature because these parameters control dosing accuracy, storage stability, and redispersion behavior. Two suppliers may use the same generic product name for different ethylene-to-acrylate ratios; therefore, glass transition temperature and minimum film-forming temperature should be compared before substitution. A lower ash content generally indicates lower protective colloid content and higher active polymer content, but it may also increase surface sintering risk and reduce shelf life under humid storage.
The acrylate ester comonomer, commonly n-butyl acrylate or 2-ethylhexyl acrylate, shifts the glass transition temperature of conventional vinyl acetate-ethylene copolymers from a typical 0 °C to +16 °C range into a −20 °C to +5 °C window determined by ISO 11357-2. This reduction moves the minimum film-forming temperature of selected grades below 0 °C when tested by ISO 2115. The ester carbonyl groups increase polar adhesion to high-energy substrates and improve cohesion on glazed ceramic tile backs, smooth concrete, and metal fixing elements. Compared with standard VAc/E powders, the acrylate-modified terpolymer provides greater low-temperature film coalescence and reduced brittle failure in thin-bed tile adhesives. The same soft film phase lowers compressive strength at equal polymer dosage because the elastic modulus of the cementitious matrix is reduced. Hydrolytic resistance is improved only moderately: vinyl acetate segments remain susceptible to alkaline hydrolysis in cement pore solution, while ethylene and acrylate sequences reduce the overall saponification rate. Published comparative ranges are shown in Table 1.
| Parameter | VAc/E RDP | VAc/E/Acrylate Terpolymer RDP | Pure Acrylic/Acrylate RDP |
|---|---|---|---|
| Glass transition temperature by ISO 11357-2 | 0 °C to +16 °C | −20 °C to +5 °C | −30 °C to +10 °C |
| Minimum film-forming temperature by ISO 2115 | 0 °C to +10 °C | <0 °C to +5 °C | <0 °C to +8 °C |
| Adhesion to non-porous substrate after 7 d by EN 1348 | 0.8 MPa to 1.5 MPa | 1.0 MPa to 2.0 MPa | 1.2 MPa to 2.5 MPa |
| Low-temperature film flexibility | Moderate | High | High |
| Resistance to alkaline hydrolysis in cement | Moderate | Moderate-to-high | High |
| Relative material cost position | Lower | Intermediate | Higher |
Compared with VAc/VeoVa RDP, the acrylate-containing terpolymer exhibits lower water uptake in the cured film and better low-temperature flexibility, but it can show more pronounced tackiness in fresh mortar. Compared with pure acrylic or acrylic ester RDP, the VAc/E/Acrylate product has a lower raw-material cost position and moderate ultraviolet resistance, making it suitable for interior and covered exterior applications. Severe long-term outdoor exposure with direct weathering is generally assigned to pure acrylic grades. These differences are formulation-dependent and should be confirmed by EN 1348 tensile adhesion and ASTM C1583 pull-off testing in the final mortar formulation.
Specification limits are not defined by a single ISO product standard; they are established on manufacturer certificates of analysis. Table 2 presents typical release ranges for general-purpose construction grades and the associated measurement methods. These values are not universal and must be read against the exact model designation supplied by the producer.
| Property | Typical release range | Measurement method |
|---|---|---|
| Bulk density | 400 g/L to 600 g/L | ISO 60 |
| Residual moisture | ≤1.5 % | ISO 760 |
| Ash content at 550 °C | 8 % to 12 % | ISO 11358-1 |
| pH of 20 % aqueous dispersion | 6.0 to 9.0 | ISO 976 |
| Glass transition temperature | −20 °C to +5 °C | ISO 11357-2 |
| Minimum film-forming temperature | <0 °C to +5 °C | ISO 2115 |
| Redispersed particle size D50 | 0.8 μm to 5.0 μm | ISO 13320-1 |
| Oversize on 200 μm sieve | ≤1.5 % | ASTM D1921 |
Residual moisture and ash content influence powder flow and the resulting polymer content in the mortar. A lot with residual moisture above 1.5 % may bridge in silo feeding equipment and should be pre-dried before blending. Bulk density below 400 g/L can require volumetric dosing recalibration because the same screw speed delivers less powder mass. Redispersed particle size above 5.0 μm is an indicator of incomplete redispersion or storage-induced sintering and may reduce film continuity in the cured mortar.
In production-scale dry mortar manufacturing, the powder is added to a horizontal ploughshare mixer or twin-shaft compulsory mixer after mineral fillers and before liquid admixtures are metered. Dry-blend temperature is maintained below 50 °C; low-ash grades with high acrylate content can sinter at the particle surface, increasing oversize residue and reducing redispersibility. A high-shear paddle mixer operating at 600 rpm to 900 rpm is generally sufficient for redispersion after all powder components are wetted; continuous mixing equipment requires a residence time above 60 seconds to dissolve the protective colloid and release the original latex particles. The redispersed polymer particles do not remain as isolated domains; as cement hydration consumes free water, the polymer film forms around hydrating grains and bridges capillary pores, reducing water absorption and increasing tensile strain capacity. At 4.0 % dosage, manufacturer technical bulletins report air content increases of 1 to 3 percentage points when measured by ASTM C231/C231M unless a defoamer is co-formulated. This air-entraining tendency is more pronounced with polyvinyl alcohol-stabilized grades and must be controlled in high-strength repair mortars because each additional 1 % air volume has been reported to reduce compressive strength by up to 5 % in cement-rich systems.
Interactions with cellulose ether are formulation-critical. The VAc/E/Acrylate latex and cellulose ether compete for water and soluble calcium ions; high-molecular-weight methyl hydroxyethyl cellulose can increase paste viscosity and delay wetting of the redispersible powder at low water-to-powder ratios. Pilot-scale trials in a 500 kg twin-shaft compulsory mixer are used to verify that the dry blend remains free-flowing and that redispersion is complete at the job-site mixing time indicated in the technical data sheet. In tile adhesives, the powder is typically dry-mixed at 2.5 % to 4.0 % by total mortar weight; the resulting mortar is evaluated by EN 1348 for tensile adhesion after dry, water-immersion, heat-ageing, and freeze-thaw cycles. Formulations using 3.0 % to 4.0 % of VAc/E/Acrylate RDP with optimized cellulose ether have been reported to meet EN 12004-1 C2 classification; published data for this specific configuration is limited and the classification must be confirmed on the production batch.
Direct replacement of a VAc/E RDP with a VAc/E/Acrylate grade is not mass-equivalent because the softer terpolymer changes the mechanical response of the hardened mortar. A substitution ratio above 1:1 can reduce compressive strength in cement-rich systems and may increase trowel tackiness, particularly at ambient temperatures above 25 °C. When high early strength or a dense surface is required, the modified powder should be compared at equal active polymer content by compressive strength testing under ASTM C109/C109M and by tensile adhesion under EN 1348. In low-cement self-leveling underlayments, VAc/E/Acrylate RDP is used at 2.0 % to 4.0 % to improve surface smoothing and edge cohesion. Above 4.0 %, the increased polymer volume fraction can reduce flow spread under ASTM C1708 and may require additional superplasticizer to maintain target flow; the exact threshold depends on the calcium sulfate-to-cement ratio and the type of high-range water reducer. Production-scale batch trials at 500 kg in compulsory mixers are recommended before full production, and the resulting self-leveling compound should be tested for flexural strength under EN 13892-2 to confirm that the polymer-rich film does not reduce early load-bearing capacity.
In cementitious repair mortars and waterproofing slurries, addition levels up to 6.0 % are applied to reduce crack formation and improve adhesion to damp concrete. Pull-off strength measured by ASTM C1583 in laboratory formulated systems has been reported above 1.0 MPa; field values depend on substrate tensile strength, surface preparation, and moisture condition at the time of application. The powder is also used in gypsum-based joint fillers and gypsum plasters at 2.0 % to 4.0 %, where it improves sanding resistance and surface cohesion but can extend drying time if the protective colloid retards moisture release.
Storage in unopened paper bags with a polyethylene liner at relative humidity below 60 % and temperature below 30 °C minimizes moisture uptake and caking. If powder moisture exceeds 1.5 %, pre-drying at 40 °C in a fluidized-bed dryer may be required before dry blending; drying above 50 °C can initiate partial film coalescence and reduce redispersibility. The redispersed latex is anionic in most commercial grades; high levels of multivalent cations or amine-based admixtures can destabilize the particle surface charge and cause premature coagulation. Compatibility with amine-based accelerators is not assumed and must be verified in a jar test at the expected water-to-powder ratio before production. The powder should not be combined with strong oxidizers or stored near volatile organic solvents because the protective colloid can absorb vapor and alter bulk density. For EU market applications, the specific model must have an active REACH registration; this information is supplied in Section 2 of the safety data sheet.
