| HS Code | 527870 |
| Product Name | Dairen DA-183 VAE Emulsion |
| Appearance | white milky liquid |
| Solid Content Percent | 54.5-56.5 |
| Viscosity Mpa S | 1500-3000 (Brookfield, 25°C) |
| Ph | 4.0-6.0 |
| Glass Transition Temp C | -5 to 0 |
| Minimum Film Forming Temp C | 0-5 |
| Particle Size Nm | 200-500 |
| Density G Cm3 | 1.05-1.10 |
| Surfactant Type | nonionic/anionic blend |
| Residual Vinyl Acetate Percent | <0.5 |
As an accredited Dairen DA-183 VAE Emulsion factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Dairen DA-183 VAE Emulsion is packaged in 200 kg drums, 1,000 kg IBC totes, or bulk tankers. |
| Container Loading (20′ FCL) | 20′ FCL: Load Dairen DA-183 VAE Emulsion in flexitanks or drums, secure well, avoid contamination, and ensure safe handling. |
| Shipping | Dairen DA-183 VAE Emulsion (Vinyl Acetate Ethylene Copolymer Dispersion) is classified as non-dangerous goods and is not regulated as UN/IMDG/ADR/IATA hazardous materials. Ship in sealed drums, IBCs, or tanks. Protect from freezing, keep between 5–35°C, and secure containers to prevent shifting. |
| Storage | Store Dairen DA-183 VAE Emulsion in original, tightly sealed containers in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and strong oxidizers. Maintain temperature between 5°C and 35°C; do not allow freezing. Keep containers dry and uncontaminated. Use within recommended shelf life, and ensure proper labeling. |
| Shelf Life | The shelf life of Dairen DA-183 VAE Emulsion is typically 6 months when stored sealed in a cool, dry place away from frost. |
Assembly wood bonding with DA-183 VAE emulsion relies on ambient-temperature film formation to meet the creep resistance demands of structural and non‑structural hardwood joints. This emulsion, characterised by a glass transition temperature near 0 °C and a minimum film-forming temperature of approximately 0 °C, permits cold‑press or radio-frequency curing without supplementary coalescing solvents in many mild‑climate production environments. Formulations typically incorporate the emulsion at 85–95 wt% of the wet adhesive, with the balance composed of poly(vinyl alcohol) as a protective colloid, defoamers based on mineral oil or silicone concentrates dosed at 0.1–0.3 wt%, and occasionally up to 5 wt% of a tackifying resin dispersion to adjust open time when processing high‑surface‑area assemblies such as laminated beams. Compliance is evaluated against EN 204–2016 for non‑structural applications (D3 and D4 durability classes) and ASTM D5751–99(2019) for laminated wood products; passing D4 requires a wet shear strength exceeding 2.5 MPa after boiling‑water cycles, a threshold that dictates minimum polymer content and dictates that the adhesive must not re‑emulsify upon water immersion. The manufacturing process entails metered mixing of the DA‑183 base emulsion with the minor components in a low‑shear planetary mixer, followed by degassing under vacuum to eliminate microbubbles that would later expand under heated platens. Application is performed via slot‑die or roller coater onto kiln‑dried timber with a moisture content of 8–12 %; cold pressing at 0.5–1.5 MPa for 30–90 minutes is typical for chair joinery, while continuous‑line high‑frequency presses, operating at 27.12 MHz, cure the bondline in 2–4 minutes when manufacturing laminated veneer lumber. The terminal products encompass solid‑wood dining chairs, window scantlings, laminated bending forms, and dovetailed drawer-boxes, all of which demand that the adhesive maintains bond integrity under fluctuating humidity without discolouring tannin‑rich hardwoods such as oak or merbau.
Data from field trials on slurry‑applied cementitious waterproofing membranes, specified under EN 14891:2017 for liquid‑applied water impermeable products beneath ceramic tiling and JC/T 984‑2011 for polymer‑modified cementitious waterproof coatings, indicate that the DA‑183 VAE emulsion functions optimally when its solid polymer content represents 5–8 % of the total powder‑mix weight. The liquid component is typically formulated by blending the raw emulsion (55 % solids) with a polycarboxylate‑ether superplasticizer, a liquid defoamer at 0.2 %, and dilution water to reach a mixing‑ready solids content of 25–30 %; this liquid is then combined with a powder comprising 42.5R ordinary Portland cement, 200‑mesh silica sand, and calcium formate as a cold‑weather accelerator in a prescribed liquid‑to‑powder ratio of 1 : 2.5 to 1 : 3.0. Exceeding a polymer‑cement ratio of 0.12 (dry polymer on dry cement) triggers a well‑documented performance cliff: the unreacted ethylene‑vinyl acetate particles encapsulate cement grains, retarding the dissolution of C₃S and delaying the initial set from a design value of 2 hours to beyond 8 hours at 23 °C and 50 % RH. This retardation is accompanied by a reduction in the 28‑day compressive strength measured per EN 12190 from approximately 24 MPa to below 10 MPa, and the crack‑bridging ability at ‑10 °C, a mandatory requirement of EN 14891 Clause 4.4, drops below 0.75 mm when the polymer‑cement ratio surpasses 0.15; below this threshold, membranes consistently bridge cracks up to 1.2 mm. Production‑scale mixing employs a slow‑speed (∼300 rpm) forced‑action paddle mixer to avoid excessive air entrainment, with the pot life monitored by a Brookfield viscometer so that application is completed within the 60–90 minute open window before shear viscosity spikes above 120 Pa·s. The mixed slurry is applied to prepared concrete substrates by notched trowel or airless spray at a wet‑film thickness of 1.5 mm, yielding a dry‑film thickness of 1.0–1.2 mm; after a 48‑hour ambient cure, the membrane is ready for tile adhesive application. Finished waterproofing systems serve as under‑tile barriers in domestic shower stalls, wet‑room floors, and balcony decks, but they are incompatible with asphalt‑based sub‑strates and should not be used in continuous immersion applications where hydrostatic pressure exceeds 0.5 bar.
| Polymer‑Cement Ratio (wt/wt) | Initial Set at 23 °C (h) | 28‑d Compressive Strength (MPa) | Crack‑Bridging at −10 °C (mm) |
|---|---|---|---|
| 0.06 | 2.5–3.0 | 26–28 | 0.8–1.0 |
| 0.08 | 3.0–4.0 | 22–25 | 1.0–1.2 |
| 0.10 | 4.5–6.0 | 18–21 | 0.9–1.1 |
| 0.12 | 7.0–9.0 | 11–14 | 0.5–0.7 |
| 0.15 | > 12 | < 10 | < 0.4 |
Formulating a top‑coat interior wall paint based on DA‑183 VAE emulsion requires balancing pigment volume concentration against the emulsion’s high binding capacity to achieve the wet‑scrub resistance demanded by EN 13300:2001, Class 1 (> 200 cycles) or ISO 11998:2006, where a film loss of less than 5 µm after 200 wet‑scrub cycles classifies the coating as scrubbable. The emulsion, delivered at 55 % solids with a Brookfield LVF viscosity of 2 000–4 000 mPa·s, is incorporated into the let‑down phase at 15–25 wt% of the total paint formulation, with the precise dosage dependent on the targeted PVC of 40–55 % and the required contrast ratio of > 95 % per ISO 6504‑3. The grind phase typically disperses rutile titanium dioxide (e.g., CR‑828) under high‑shear conditions in a dissolver equipped with a ∅200 mm Cowles blade at a tip speed of 18–25 m/s, using a sodium polyacrylate dispersant at 0.4–0.8 % on pigment weight; this step must be carefully engineered because the VA component of the copolymer is susceptible to shear‑induced destabilisation if exposed to prolonged high‑shear post‑addition, so the let‑down is performed at reduced rotational speed. After emulsion incorporation, thickened using medium‑viscosity hydroxyethylcellulose (e.g., Natrosol 250 HBR) at 0.3–0.6 %, the paint is filtered through a 250 µm mesh and filled into containers. The terminal products are premium low‑VOC (< 30 g/L) interior matt and silk paints applied by roller or airless sprayer in residential and commercial re‑paint projects, where the key performance markers are not only scrub resistance but also blocking resistance (tested per ASTM D4946) and in‑can preservation requiring a BIT/MIT biocide combination at 0.15 %. A processing caveat observed on filling lines is that DA‑183 emulsions with a pH of 4.5–5.0 can cause mild corrosion of un‑coated mild‑steel holding tanks over extended product recirculation; accordingly, production vessels are typically 316L stainless steel or equipped with a continuously monitored corrosion inhibitor package.
Lamination adhesives for paper‑based food packaging operating under FDA 21 CFR 176.170 and 176.180 conditions of use C and E typically demand low odour and minimal organoleptic contribution, making DA‑183 a candidate base polymer for roll‑to‑roll converting lines. The emulsion is reduced with deionised water to a coating viscosity of 150–300 mPa·s and combined with a polymeric defoamer and up to 1.5 wt% of a blocked isocyanate crosslinker to elevate the hot‑tack strength required during high‑speed paper cup forming where mandrel temperatures reach 120–140 °C. The formulated adhesive is applied by a direct‑gravure or flexographic station at a coat weight of 3–5 g dry/m² onto clay‑coated or plain kraft paper substrates, then dried in a tunnel oven with a three‑zone profile (80 °C / 110 °C / 70 °C) before being nipped under a chilled‑roller laminator. Compliance migration testing under EU 10/2011 simulant D2 (vegetable oil) requires that overall migration does not exceed 10 mg/dm², a limit easily met when the dried adhesive layer remains unmixed with fatty foodstuffs. Finished articles include cold‑drink paper cups, microwaveable soup bowls, and folding carton windows, all of which rely on the adhesive film’s resistance to coffee and water staining at 85 °C for 30 minutes without delamination.
Behind the calender on a rotary‑screen coating line, substituting a styrene‑acrylic binder with DA‑183 VAE emulsion immediately alters the penetration behaviour into a needle‑punched polyester web because of the emulsion’s pseudo‑plastic flow curve and lower glass transition temperature (0 °C). The compound formulation comprises the raw DA‑183 emulsion at 65–80 phr, aluminium trihydrate filler pre‑dispersed with an anionic wetting agent at 40–60 phr, a polyacrylate thickener to raise the viscosity to 8 000–12 000 mPa·s (Brookfield #7 at 20 rpm), and a melamine‑formaldehyde crosslinker at 2–4 phr to meet OEKO‑TEX 100 Class I requirements. The principal processing hazard is surface skinning during the pre‑drying stage (100–120 °C for 90 s), which traps moisture and causes blistering in the main oven at 150 °C; this is controlled by maintaining the first‑zone humidity above 35 g H₂O/kg dry air and limiting the air velocity to 1.5 m/s. Strike‑through to the fabric face is prevented by dosing the thickener to achieve a low‑shear viscosity in excess of 15 000 mPa·s and by employing a blade‑over‑roller coating head rather than a direct kiss roll. Finished components—trunk liners, shoe‑last stiffeners, and carpet‑tile secondary backings—must pass a hydrolysis‑resistance test under ISO 1419 (70 °C, 95 % RH, 7 days) without delamination or softening.
The addition of DA‑183 VAE emulsion to cement‑based self‑levelling underlayments, governed by EN 13813:2022 (designation CTS C25 F6) and JC/T 985‑2017 for interior screeds, significantly modifies the hardened material’s flexural behaviour, but a direct trade‑off emerges between crack‑bridging ability and compressive strength once the polymer‑cement ratio exceeds 0.10. The liquid component is engineered by diluting the emulsion with water to achieve a constant fluidity of 250–280 mm (flow cone test per EN 12706) while maintaining a water‑to‑cement ratio not exceeding 0.35; the powder blend typically integrates 42.5R cement, fine calcium carbonate (D₅₀ = 10 µm), anhydrite, a casein‑based fluidiser, and a small amount of PVA redispersible powder as a co‑binder. When DA‑183 solids account for 4–6 % of the total binder, the 28‑day flexural strength measured on 40×40×160 mm prisms per EN 1015‑11 reaches 7–9 MPa, and the crack‑bridging test under EN 1062‑7 shows stable crack closure across 0.3 mm openings. However, pushing the polymer‑cement ratio to 0.12 or higher in pursuit of greater flexibility collapses the compressive strength from a certifiable 25 MPa to approximately 14 MPa, rendering the screed non‑compliant with load‑bearing requirements. Floor installers mix the two‑component material using a 700 rpm electric mixer with a spiral paddle, pour it within 20 minutes after the initial wetting, and de‑aerate it with a spiked roller; higher polymer fractions shorten the working time and demand faster trowelling, creating a bottleneck in large‑area retail flooring renovations. The resulting self‑levelling layer functions as a substrate for luxury vinyl tiles, laminate flooring, and ceramic tiles in dry indoor environments; it is not designed for exterior exposure or wet rooms without an additional waterproofing membrane.
| Application | Key Regulation | Test Method / Clause | Critical Limit |
|---|---|---|---|
| Assembly wood bonding | EN 204 D4 | EN 205 | Wet shear strength > 2.5 MPa |
| Cementitious waterproofing | EN 14891 | Clause 4.4 crack bridging | ≥ 0.75 mm at −10 °C |
| Interior wall paint | EN 13300 Class 1 | ISO 11998 | Film loss < 5 µm at 200 cyc. |
| Paperboard lamination | FDA 21 CFR 176.170 | EU 10/2011 Overall migration | < 10 mg/dm² |
| Nonwoven back‑coating | OEKO‑TEX 100 Class I | ISO 1419 hydrolysis | No delamination after 7 d at 70 °C/95 % RH |
| Self‑levelling underlayment | EN 13813 CTS C25 F6 | EN 1015‑11 / EN 1062‑7 | Flexural > 7 MPa; crack bridging ≥ 0.3 mm |
Competitive Dairen DA-183 VAE Emulsion 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!
Dairen DA-183 is a vinyl acetate-ethylene (VAE) copolymer emulsion produced by Dairen Chemical Corporation, classified within the product portfolio as a medium-ethylene-content, high-solids dispersion stabilized with a polyvinyl alcohol (PVOH) protective colloid system. The grade is engineered for waterborne adhesive and coating formulations requiring rapid film formation at ambient temperatures and adhesion to hydrophobic substrates such as untreated polyvinyl chloride (PVC), corona-treated polyethylene, and polystyrene. Its characteristic balance of 55 ± 1% non-volatile content and Brookfield RVT viscosity of 2000–3500 mPa·s (spindle 3, 20 rpm, 25°C) permits the formulation of low-to-medium viscosity compounds without excessive dilution, while the glass transition temperature of approximately 0°C imparts cold flexibility without external plasticizer demand at usage levels common in packaging laminations.
Dairen’s DA-series VAE emulsions span ethylene content from 10% to 25% by weight and solids fractions from 50% to 60%. DA-183 occupies a distinct processing window between the lower-viscosity DA-101 (1500 mPa·s, 55% solids, lower ethylene) and the high-viscosity DA-102 (4000–6000 mPa·s, similar solids). Unlike DA-240, which carries 20–22% ethylene and demonstrates minimum film formation temperature (MFFT) below −5°C, DA-183’s ethylene content is held at 14–16%, delivering an MFFT of 0°C and a Shore A hardness after drying of 35–40. This narrower ethylene incorporation limits the polymer’s intrinsic tack relative to ultra-low-Tg grades, a characteristic desirable in low-blocking pressure-sensitive adhesives and overprint varnishes. The PVOH stabilization, as opposed to surfactant-stabilized VAEs, yields small average particle diameters (0.8–1.5 µm, as determined by dynamic light scattering) and high shear stability when processed through gear pumps and screen-pack filters downstream of polymerization finishing.
When the dispersion is formulated into heat-seal lacquers for aluminium-laminated paper, the absence of alkylphenol ethoxylate (APEO) surfactants and residual formaldehyde complies with the voluntary emission standards of the German Blue Angel (RAL-UZ 14a) and Japan’s Voluntary Control Council for Formaldehyde in Textiles. Direct food-contact adhesives formulated with DA-183 may invoke US FDA 21 CFR 175.105 and 176.170 when the finished coating or adhesive film constitutes a functional barrier preventing migration above 0.5 ppb. The following table summarizes the typical properties as reported on the manufacturer’s certificate of analysis and independently verified via quality-control protocols aligned with ISO 9001:2015.
| Parameter | Value | Test Method |
|---|---|---|
| Solids content | 55 ± 1% | ISO 3251:2019 (2h, 105°C) |
| Viscosity | 2000–3500 mPa·s | Brookfield RVT, spindle 3, 20 rpm, 25°C |
| pH | 4.0–5.0 | ISO 976:2013 |
| Particle size (D50) | 0.8–1.5 µm | ISO 22412:2017 (DLS) |
| Minimum film formation temperature | 0°C | ISO 2115:2000 |
| Glass transition temperature (Tg, midpoint) | 0°C | DSC, 10 K/min, second heating |
| Density at 20°C | 1.07 g/cm³ | ISO 2811-1:2016 |
On production-scale coating lines with working widths exceeding 1.5 m, DA-183 is typically applied via three-roll reverse or direct gravure coaters at wet-film deposits between 20 g/m² and 50 g/m². The low high-shear viscosity—recorded at 120–180 mPa·s under a cone-and-plate viscosity measurement at 10,000 s⁻¹—prevents misting at roller speeds up to 150 m/min, a performance attribute that contrasts with lower-solids VAE grades that require viscosity reduction through water addition and consequently extend drying tunnel residency. A lamination bond strength of ≥2.5 N/15 mm (ASTM D1876-08, 180° peel) on corona-treated low-density polyethylene film is achievable when the dried adhesive layer is heat-sealed at 80–90°C and 3 bar pressure for 1–2 s. In wood veneer bonding to medium-density fiberboard, press-cold stacking trials at 0.7 MPa for 30 min followed by 24 h conditioning at 23°C and 50% relative humidity yielded block-shear strengths exceeding the cohesive failure limit of the wood substrate, indicating the adhesive film’s capacity to transmit stress to the porous adherend without interfacial delamination.
Batch-to-batch variation in the emulsion’s residual vinyl acetate monomer content, controlled at ≤1000 ppm by gas chromatography (ISO 13741-1:2023), avoids plasticization drift that would otherwise alter the open time during high-speed collation. Operators must, however, monitor in-process viscosity after the addition of associative thickeners: DA-183 exhibits pronounced shear-thinning when formulated with hydrophobically modified ethoxylated urethane (HEUR) rheology modifiers at addition levels above 0.3 pph relative to emulsion, and Brookfield viscosities can exceed 20,000 mPa·s at low shear, requiring adjustment of gravure cell depth to maintain coat-weight uniformity.
In exterior architectural latex paints defined by EN 1062-1:2004, the incorporation of DA-183 at 5–15% on total binder solids improves low-temperature crack bridging without the use of dibutyl phthalate or benzoate ester coalescents that are subject to EU SVHC listing. The emulsion’s MFFT of 0°C permits film integration at substrate temperatures as low as 2°C when blended with a conventional acrylic latex with MFFT of 5–10°C. Elongation at break of the pure polymer film reaches 600% (ISO 37:2017, type 2 dumbbell, 200 mm/min), and after 1000 h of QUV-B accelerated weathering (ISO 16474-3:2021), retention of tensile strength exceeds 80%, a result corroborated by the absence of conjugated double-bond oxidation peaks in FTIR spectra between 1700 cm⁻¹ and 1750 cm⁻¹. Published data for formulated paints incorporating DA-183 at above 20% binder solids in deep-base tint formulations is limited; experimental trials on a pilot-scale disperser at 800 rpm indicated a risk of syneresis when the pigment volume concentration falls below 15%, attributed to the emulsion’s sensitivity to divalent cation-induced coagulation from extender-grade calcium carbonates.
Container and closure sealants formulated with DA-183 exhibit low odor and low volatile organic compound content (calculated VOC <0.1 g/L per US EPA Method 24), making the grade a candidate for replacing solvent-borne neoprene-based gasketing compounds in metal crown cap linings. The dry film’s low water uptake (18% after 24 h immersion, DIN EN 120:1992) ensures dimensional stability in high-moisture package headspaces.
Post-addition of glyoxal crosslinkers at 1–3 pph on emulsion solids (e.g., Glyoxal 40% aqueous solution) induces rapid viscosity build within 4–6 h at 25°C, proceeding via acetal formation with the PVOH hydroxyl groups. This reaction temperature sensitivity mandates metered inline mixing immediately upstream of the coating die to avoid equipment fouling; static mixers with 12–18 elements arranged in a non-helical geometry are recommended to achieve a coefficient of variation in crosslinker distribution of <5%. The crosslinked films display a measurable increase in gel content (from 58% to 83% after 24 h acetone extraction, ISO 10147:2012), translating to improved water-fastness and thermal creep resistance up to 60°C. However, the addition of glyoxal shifts the pH downward by 0.3–0.5 units and can cause redispersion failure if the formulation is stored beyond the pot life of approximately 8 h. Ammonia-stabilized grades with pH above 6.0 are incompatible with DA-183 due to instantaneous imine precipitation, which impedes optical clarity in clear lacquers. When such alkaline grades are mandated for substrate resistance, a buffer adjustment of DA-183 to pH 4.5 with 10% citric acid solution is a prerequisite, though this modification reduces the protective colloid’s steric stabilization and must be validated through 30-day accelerated storage at 50°C (ISO 3219:2017).
In comparison to Dairen’s DA-240, DA-183 shows 15–20% lower elongation at break in the uncrosslinked state, which restricts its use in dynamic joint sealants with movement capability beyond ±15%, but demonstrates 12% higher lap shear strength on rigid PVC after 7-day ambient cure. The manufacturing process for DA-183 employs a continuous loop reactor with a residence time of 40–60 min and a proprietary heat-exchange configuration that maintains the reaction temperature within ±1°C, minimizing branching reactions that could raise the polydispersity index above 2.5 and induce batch-to-batch shifts in peel adhesion. This level of process control is documented in the lot-specific certificate of analysis available through the Dairen e-commerce portal, traceable via the lot number embossed on each 200 kg L-ring drum or 1000 kg IBC tote.
