| HS Code | 458919 |
| Product Name | DA-1210 VAE Copolymer RDP |
| Polymer Base | Vinyl Acetate-Ethylene (VAE) Copolymer |
| Physical Form | White powder |
| Bulk Density | 350-450 g/L |
| Particle Size | Sieve residue >=95% through 250 micron |
| Solid Content | 99-100% |
| Moisture Content | <=1.0% |
| Ash Content | <=15% |
| Ph 10 Aqueous Dispersion | 6.0-8.0 |
| Minimum Film Forming Temperature | 0-2 °C |
| Glass Transition Temperature | ~0 °C |
As an accredited DA-1210 VAE Copolymer RDP factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | DA-1210 VAE Copolymer RDP is packaged in 25 kg multilayer kraft paper bags with polyethylene liner for moisture protection. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with DA-1210 VAE Copolymer RDP, palletized and secured for safe transport. |
| Shipping | DA-1210 VAE Copolymer RDP ships as a free-flowing white powder in moisture-proof multi-layer bags or drums. Keep sealed, dry, and away from heat, humidity, and direct sunlight during transport. Non-hazardous under standard conditions; handle with care to prevent dust generation and product degradation. |
| Storage | Store DA-1210 VAE Copolymer RDP in a cool, dry, well-ventilated area, away from moisture, rain, heat, and direct sunlight. Keep containers tightly sealed and off the ground on pallets to prevent water damage and caking. Use within 6–12 months under recommended conditions to maintain flow and performance. |
| Shelf Life | Shelf life is typically 12 months from production when stored unopened, in original packaging, in a cool, dry place. |
On production lines using a twin-shaft forced-action mixer with a nominal capacity of 800 kg, DA-1210 VAE copolymer RDP is dry-blended into C2-class tile adhesive formulas before the cellulose ether is introduced, preventing hydrophobic competition between the protective colloid of the powder and the thickener during later wet dispersion. A screening matrix at a dosage of 2.5 wt% of total dry mortar, with a cement content of 320 kg/t CEM I 42.5 N and a silica sand fraction of 0.1–0.4 mm, records initial tensile adhesion via EN 1348:2014 at 23 ± 2 °C and 50 ± 5 % relative humidity after 28 d standard cure. The same screening set typically shows open time under EN 1346:2014 remaining above 20 min when the powder addition is maintained at 2.5 wt% and the water demand is adjusted with a mid-viscosity cellulose ether at 0.4 wt%. In high-speed planetary mixers used for wet preparation, the shear rate is kept below 300 rpm after the powder begins to re-disperse; higher shear can break the film-forming latex particles and reduce deformability measured as transverse deformation under EN 12002:2015. The critical process conflict is that raising DA-1210 to 3.5 wt% improves tensile adhesion after water immersion but may reduce early strength and extend open time beyond the point where the cement skin forms unevenly, so plant trials frequently adjust cement type or accelerator dosage rather than exceeding 3.0 wt%. Terminal products include C2, C2TE, and C2S1 adhesives for porcelain and low-porosity tiles.
| Test parameter | Standard method | Instrument condition | Typical screening target for C2-class adhesive |
|---|---|---|---|
| Open time | EN 1346:2014 | 23 ± 2 °C, 50 ± 5 % RH, notched trowel | ≥ 20 min |
| Initial tensile adhesion | EN 1348:2014 | concrete tile, pull-off 250 ± 50 N/s | ≥ 1.0 N/mm² |
| Transverse deformation | EN 12002:2015 | three-point bending, 2 mm/min | C2S1: 2.5–5.0 mm |
| Slip resistance | EN 1308:2016 | vertical substrate, 500 g load | ≤ 0.5 mm |
Batch-to-batch variation in hemihydrate plaster is a larger source of setting-time drift than polymer addition, but DA-1210 still contributes a measurable retardation when it is dry-blended into gypsum skim coat or machine-applied gypsum plaster at 1.0–2.0 wt% based on stucco. In laboratory Vicat needle testing under EN 13279-2:2014, formulations containing DA-1210 without an adjusted protein-based retarder often shift the initial set from 120 min to 160 min depending on the plaster source and the presence of anhydrite II; this is not a basis for avoiding the polymer, but it requires that the retarder dosage be reduced by 0.02–0.08 wt% when the polymer is introduced. Production-scale continuous screw mixers used for gypsum machine plasters operate at water-to-plaster ratios of 0.30–0.36, and the redispersible powder is fed through the pre-dry blend unit rather than added into the mixing chamber with water, because premature contact with water can form a latex film that blocks the screw and produces hard specks in the sprayed finish. The hardened skim coat shows improved surface cohesion and reduced powdering, but published data for this specific DA-1210 grade in gypsum is limited; the available performance records for VAE copolymers under EN 13279-1:2008 indicate that compressive strength is not improved at additions above 2.0 wt% and may decline as the polymer phase disrupts gypsum crystal interlocking. Terminal products are gypsum skim coats, gypsum hand plasters, and gypsum filler compounds for jointing, all of which require storage of the dry powder at RH > 60 % to be preceded by pre-drying with a desiccant dryer to maintain free-flowing powder feed.
In cementitious waterproofing slurries applied by brush or trowel at a wet-film thickness of 1.5–2.0 mm, DA-1210 is incorporated at 3.0–5.0 wt% of the dry mortar, and the resulting polymer film after hydration blocks capillary channels that would otherwise transmit moisture under EN 1062-3:2008 conditions. A one-component slurry formulation based on 350 kg/t CEM II/A-M 42.5, 450 kg/t 0.1–0.5 mm quartz sand, 150 kg/t limestone filler, and 40 kg/t DA-1210 mixed at 0.22–0.25 water-to-powder ratio is typically screened in a high-shear disperser at 300–500 rpm for 90 s. The operational boundary is that re-dispersion is incomplete if the disperser is run below 200 rpm; this produces polymer agglomerates visible as pinholes in the cured coating. The cured slurry is tested for capillary absorption and crack-bridging under EN 14891:2017, but the product is not intended for continuous hydrostatic immersion unless a two-component epoxy or polyurethane topcoat is applied because the redispersed VAE phase remains water-sensitive. A second coat applied after 4–6 h at 23 °C is standard when the total dry-film thickness exceeds 2.0 mm.
In exterior thermal insulation composite systems, the base coat composition is the stress-distributing layer between the insulation board and the reinforcing mesh, and DA-1210 is dry-blended at 2.5–3.5 wt% to lower the mortar’s elastic modulus and increase crack-bridging capacity before mesh embedment. On a production line using a 2,000 kg horizontal ribbon blender, the powder is introduced after the cement and before the hydrophobic additive; this order prevents the vinyl acetate-ethylene copolymer from agglomerating on the hydrophobic agent’s surface during dry mixing. The relevant test path under EAD 040083-00-0404 includes freeze-thaw and heat-rain cycling on large-scale wall specimens, while laboratory screening uses ETAG 004 Annex E methods and EN 1348:2014 adhesion to expanded polystyrene boards. A base coat containing 3.0 wt% DA-1210 typically retains adhesion to EPS boards above 0.08 N/mm² after the thermal cycling described in EAD 040083-00-0404, and the failure mode changes from adhesive peeling at the EPS surface to cohesive failure inside the insulation panel; this is the field indicator that the polymer film has formed a continuous bridge across microcracks. The process conflict is that increasing DA-1210 beyond 3.5 wt% raises water-vapour diffusion resistance and may compromise the exterior render system’s drying behaviour; therefore, formulators do not compensate for crack-bridging deficits solely with polymer addition but adjust the alkali-resistant glass-fibre mesh weight from 145 g/m² to 160 g/m² or 200 g/m² as the primary reinforcement variable. Terminal products are base coat adhesives for EPS, XPS, and mineral wool insulation boards under thin render systems.
Self-leveling underlayments based on ternary binders of ordinary Portland cement, calcium sulfoaluminate cement, and anhydrite require a delicate balance between polycarboxylate superplasticizer and redispersible polymer; DA-1210 at 1.0–2.0 wt% contributes to flow retention and edge smoothing, but additions above 2.0 wt% can viscosity-block the mortar under EN 12706:1999 flow-ring testing and reduce the 24 h compressive strength below the 20 N/mm² often specified for foot-trafficable underlayments. Published data for this specific configuration is limited, so plant screening typically varies DA-1210 in 0.5 wt% increments and records flow diameter, 24 h surface hardness, and 28 d flexural strength under EN 13892-2:2002 before committing to bulk silo shipments. In continuous mixing equipment used for bagged SLU products on job sites, the powder is metered with the low-density fillers after the cement fractions are wetted, because direct addition to the vortex at 450–600 rpm can form stable foam that reduces the cured matrix density even when a defoamer is present. The terminal finished products are 5–20 mm layer self-leveling underlayments for renovation and floor covering preparation.
In overhead and vertical concrete repair applications governed by EN 1504-3:2016 class R3/R4, DA-1210 is used at 2.5–4.0 wt% of the dry mortar to provide low-temperature film coalescence that sustains adhesion on damp substrates after 7 d moist curing. The mixing protocol on a job-site continuous screw mixer with a 3.5 kW motor and 30 L/min water metering is to first establish a uniform cement-sand-water matrix, then add the DA-1210-containing dry blend slowly into the hopper; adding the powder too early creates a paste with high air entrapment and reduces the pull-off adhesion measured by EN 1542:1999 below the R4 threshold of 2.0 N/mm². Published field records from VAE copolymer repair mortars indicate that the main failure mode is not cohesive tensile failure but surface skinning during exposure to 35 °C and wind speed > 3 m/s, which can be mitigated by reducing the polymer dose to 2.5 wt% and applying a curing membrane immediately after finishing.
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DA-1210 is a vinyl acetate–ethylene (VAE) copolymer redispersible polymer powder supplied as a white free-flowing powder for dry-mix mortar modification. The grade is manufactured by spray-drying an aqueous VAE dispersion stabilized with a poly(vinyl alcohol) protective colloid and an anti-caking mineral filler. In cementitious tile adhesives, patching mortars, and external thermal insulation composite systems, the powder is added directly to the dry blend at 1.5–4.0 wt% of total dry mix mass before water addition. Redispersion occurs within 60–90 s under normal forced-action paddle mixing; a common production control is that redispersed particle size remains below 5 µm after 2 min at 1,200 rpm high-shear agitation. The product is supplied in 25 kg multi-wall paper bags with polyethylene liners and should be stored in unopened bags at 5–35 °C and relative humidity below 60%. Above 60% RH, pre-drying or immediate use is recommended because inter-particle fusion can produce lumps larger than 315 µm on screening.
Because the product contains an anti-caking agent and residual water-soluble protective colloid, the ash content after calcination at 1000 °C for 2 h is typically between 10% and 14% by mass. This mineral fraction is not equivalent to total additive content because the polymer and poly(vinyl alcohol) decompose under these conditions. The pH of a 10% redispersion at 20 °C is 5.0–8.0, which indicates compatibility with cement alkalis but excludes strongly acidic environments. The low glass transition temperature in the 0–5 °C range permits film formation at ambient temperatures above 0–4 °C without external coalescents, but it also makes the dry powder sensitive to caking under warehouse temperatures above 35 °C. The bulk density range 400–550 g/L affects gravimetric feeder calibration; volumetric augers may deliver a dose error of ±0.2 percentage points or more if the material compacts in the hopper.
| Property | Method | Typical value |
|---|---|---|
| Appearance | Visual inspection | White free-flowing powder |
| Bulk density | ISO 60:1977 | 400–550 g/L |
| pH of 10% redispersion, 20 °C | ISO 976:2013 | 5.0–8.0 |
| Minimum film formation temperature | ISO 2115:2000 | 0–4 °C |
| Glass transition temperature, DSC midpoint | ISO 11357-2:2020 | 0–5 °C |
| Ash content, 1000 °C, 2 h | ISO 3451-1:2019 | 10–14 % |
| Sieve residue, 300 µm | Supplier control method | ≤2 % |
| Viscosity of 40% solids redispersion, 25 °C, 20 rpm | ISO 2555:2018 | 400–1500 mPa·s |
On a production-scale twin-shaft batch mixer with a working volume of 2,000 L and mixing speed of 120 rpm, wetting of 25 kg DA-1210 into 750 kg dry mortar can be completed within 60 s if water is added as a single stream at 0.20–0.22 L/kg dry mix. Adding the powder onto the water surface creates a low-shear film that persists for several minutes and increases lump formation; water should be added to solids or an inline powder eductor should be used. The redispersed viscosity of 400–1500 mPa·s at 40% solids supports low-shear mixing but may require incremental addition in high-speed dispersers above 1,500 rpm to avoid lump formation. The low film formation temperature allows mortar application down to 0–4 °C, but ambient application below 0 °C prevents complete coalescence and water immersion adhesion measured by EN 1348 can fall below 0.5 N/mm².
Compared with acrylic and styrene–acrylic redispersible powders, DA-1210 provides lower film-formation temperature and ethylene-derived flexibility, but its acetate backbone is vulnerable to alkaline hydrolysis. In continuous immersion at 23 °C, VAE films may absorb 10–20% water after 7 days, while a high-quality acrylic film may remain below 10%; at 60 °C, the saponification rate increases and adhesion retention under EN 1348 may fall below 0.5 N/mm². Published data for this specific configuration is limited, but DA-1210 should not be selected for permanently immersed alkaline environments such as swimming pool grouts or hot caustic scrubber linings. In submerged but neutral pH conditions, its performance is closer to acrylic powders, but water vapour permeability remains higher.
Relative to a poly(vinyl acetate) homopolymer RDP, DA-1210 exhibits a lower minimum film formation temperature and reduced demand for external coalescents because the copolymerized ethylene acts as an internal plasticizer. This allows film coalescence at 0–4 °C and reduces volatile organic compound load. Relative to a styrene–acrylic powder, DA-1210 typically gives softer films with lower surface hardness but better wet-out on freshly mixed cement paste. In tile adhesive trials conducted under EN 1348, substitution of a styrene–acrylic powder by DA-1210 at equal 3.0 wt% polymer mass may reduce 28-day compressive strength by 5–15% while preserving tensile adhesion above 0.5 N/mm². These differences are formulation-specific and should not be extrapolated to systems with high calcium sulfate content or high alumina cement without pilot-scale verification.
At addition levels below 1.0 wt%, the powder acts primarily as a rheology modifier and dust reducer and does not reliably form a continuous film; tensile adhesion improvement under EN 1348 may be statistically insignificant. At 2.0–3.0 wt%, the polymer forms a discontinuous-to-semi-continuous phase that improves adhesion to dense concrete and porcelain tiles, but the mortar may show air content increases of 1–4 percentage points unless defoamer is added. Above 5.0 wt%, forced-action mixers can develop sticky mortars with reduced workability and air entrainment that drops wet density below 1,500 kg/m³; operation outside this range is not recommended for standard tile adhesive production.
Because the protective colloid is poly(vinyl alcohol), DA-1210 is incompatible with borate-based retarders and some borate-containing fillers. Borate ions complex with poly(vinyl alcohol) and produce a stiff gel that blocks redispersion and reduces mortar workability. Avoid pre-blending DA-1210 with borax, zinc borate, or calcium borate unless the mixing water contains a competing polyol in sufficient concentration. This field-observed incompatibility is more pronounced when the powder is added to dry mix before water because the local concentration of borate at the particle surface can be high.
The powder can increase wet mortar air content by 1–4 percentage points because the protective colloid stabilizes entrained air. In a formulation without defoamer, this reduces compressive strength by up to 20% compared with a defoamed batch. A mineral-oil or silicone defoamer at 0.1–0.3 wt% of total dry mix can lower air content to below 3% without impairing film formation at the selected dosage.
When DA-1210 is used in cementitious waterproofing slurries applied at 2.0–3.0 mm wet film thickness, a dosage of 4.0–8.0 wt% on dry mix is common. The polymer film reduces chloride ion penetration but does not eliminate capillary pores; water vapor transmission measured by EN ISO 12572 is reduced relative to control. If the slurry is applied over damp concrete without a primer, the low film-formation temperature permits partial coalescence at 5 °C, but wet adhesion to the substrate must be confirmed by a pull-off test such as EN 1542. In one-part polymer-modified repair mortars applied by trowel at 20–40 mm thickness, DA-1210 at 1.5–3.0 wt% reduces shrinkage cracking and improves adhesion to concrete substrates. Compressive strength development measured by EN 1015-11:2019 is controlled by the cement hydration curve; the polymer phase contributes less to early strength than a calcium sulfoaluminate accelerator. In production batches with pot life exceeding 45 min, the mortar retains workability, but over-trowelling can cause polymer migration toward the surface and reduce bond strength of subsequent coats.
Self-leveling underlayments require low-viscosity rheology. DA-1210 may be used at 1.0–2.5 wt%, but the protective colloid increases water demand; high-range water reducers based on polycarboxylate ethers are often needed to maintain flow at 140–160 mm when tested by the flow table method of EN 1015-3:1999. In contrast to acrylic powders, DA-1210 can maintain flow at lower polymer dosage but may contribute slightly more air entrainment. The air content should be checked with a pressure method such as EN 1015-7:1998 and controlled with a defoamer if it exceeds 3% by volume in fresh mortar.
For tile adhesives exposed to freeze–thaw cycles, DA-1210 contributes to adhesion retention by increasing flexibility and lowering the modulus of the cementitious matrix. Test protocols such as EN 1348 include freeze–thaw cycling; formulations with DA-1210 at 3.0 wt% can be designed to retain tensile adhesion above 1.0 N/mm² after 50 cycles, provided the mortar achieves complete initial cure and air content remains below 3%. Failure to control water ratio or compaction can produce surface spalling that is unrelated to polymer quality.
Incoming inspection at a dry-mix plant should include sieve residue on 300 µm and pH of a 10% redispersion; a pH below 4.5 indicates partial hydrolysis or contamination and requires quarantine. Dust extraction with a filter efficiency of 99% at 3 µm is recommended in enclosed blending stations. The powder is not classified as hazardous under CLP, but static discharge may occur in pneumatic conveying; grounding of hoses and silo outlets reduces ignition potential. Published data for this specific configuration is limited where ultra-low dusting is required, but standard engineering controls are usually sufficient.
Pre-drying in a fluid-bed dryer at 40 °C for 30 min can restore flow of mildly caked material, but the powder must not exceed 50 °C because the polymer particles fuse irreversibly. Forced convection ovens are not recommended; they create static cake layers at tray surfaces. Dry-mix manufacturers often screen the powder through 1–2 mm mesh before silo transfer. Vibratory sifters with stainless steel mesh of 1 mm remove paper fibers and minor lumps. The powder should not be conveyed through high-speed pin mills because impact heating above the minimum film formation temperature can fuse particles and reduce redispersibility.
