| HS Code | 361341 |
| Product Name | Celvolit LDM 5189 |
| Manufacturer | Celanese |
| Chemical Family | Vinyl acetate-ethylene (VAE) copolymer |
| Physical Form | Aqueous dispersion |
| Appearance | Milky white liquid |
| Solids Content | 54 - 56% |
| Viscosity | 4000 - 8000 mPa·s at 20°C (Brookfield) |
| Ph | 4.0 - 6.0 |
| Density | 1.06 - 1.10 g/cm³ at 20°C |
| Glass Transition Temperature Tg | -10°C (typical) |
| Minimum Film Forming Temperature Mfft | 0°C |
| Particle Size | 0.5 - 1.5 µm |
| Residual Monomer | <0.1% |
| Stabilizer System | Anionic and non-ionic surfactants |
As an accredited Celvolit LDM 5189 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Celvolit LDM 5189 is supplied in 25 kg multi-wall paper bags with a polyethylene liner for moisture protection. |
| Container Loading (20′ FCL) | Celvolit LDM 5189 is loaded as a 20′ FCL, with bags shrink-wrapped on pallets, secured for safe transport. |
| Shipping | Celvolit LDM 5189 is a water-based polymer dispersion. It is generally non-hazardous and not regulated for transport by road, rail, sea, or air (non-DG). Ship in sealed drums or IBCs, protected from freezing, moisture contamination, and temperatures below 5°C. Always refer to the current Safety Data Sheet for exact classification. |
| Storage | Store Celvolit LDM 5189 in its original, tightly sealed container in a cool, dry, well-ventilated area. Protect from direct sunlight, extreme heat, and freezing temperatures; ideal storage is between 5–30°C. Keep away from moisture and incompatible materials. Under proper conditions, shelf life is typically 12 months from delivery. Always follow label and SDS instructions. |
| Shelf Life | Shelf life is typically 12 months from production date when stored sealed, cool, and dry in original packaging. |
Celvolit LDM 5189 is metered as a waterborne vinyl acetate-ethylene copolymer dispersion where open contact layers are required for bonding flexible polyurethane foam to woven or nonwoven textile backings. The dispersion is diluted with demineralised water until the Brookfield RVT viscosity at 25 °C, spindle 3, 20 rpm, falls between 800 mPa·s and 1,200 mPa·s. Coating is carried out on the textile side of an 18–28 kg/m³ ether or ester polyurethane foam at a wet film weight of 45–70 g/m². Before lamination, the foam surface is corona-discharged to a minimum dyne level of 38 mN/m using a 1.5–2.5 kW corona treater; this step is required because internal release agents in polyether slabstock reduce wetting and lower bond-line cohesion. After an open time of 45–90 s at 23 °C and 50% relative humidity, the coated textile and foam are conveyed through a nip roll assembly at 2–3 bar pneumatic pressure. The bonded laminate is stacked for 24 h at ambient temperature before die cutting or quilting. Compliance for upholstery is normally evaluated under ISO 11339:2010 for T-peel adhesion at 50 mm/min separation rate; the required failure mode is cohesive substrate tear in the foam rather than interfacial release. If the laminate is intended for juvenile furniture, the formulation is checked against REACH Annex XVII restricted phthalate lists and APEO content below 100 mg/kg in the wet adhesive. Terminal products include foam-backed headboard shells, office partition panels, and mattress tape-edge laminates.
PVC profile wrapping formulations based on Celvolit LDM 5189 are prepared by adding 3–5 parts by weight of a water-emulsifiable hexamethylene diisocyanate trimer to 100 parts of the stirred dispersion immediately before application; the pot life of the activated mix at 23 °C is 2.5–3.5 h. The adhesive is applied through a slot-die coater to the reverse side of a primed 0.2–0.6 mm calendered PVC foil at a wet film thickness of 80–120 µm. The coated foil then passes through a 55–65 °C infrared activation tunnel with a dwell time of 12–20 s before being pressed onto the surface of a pre-heated medium-density fibreboard profile at 1.5–3.0 N/mm² line pressure. When the PVC film contains more than 20 phr monomeric plasticiser, the crosslinker level is held at the upper end of the range because unreacted DOP/DINP migrates into the bond line and reduces the storage modulus at 60 °C. The performance is evaluated by soaking the laminated profile for 24 h in water at 23 °C; after drying for 2 h, edge lift must remain below 0.5 mm for furniture-grade profiles. The system is checked under EN 204 for D2 service classification, and the wood-adhesive compatibility of the MDF substrate is confirmed under DIN 68602. End products include kitchen cabinet door edge bands, skirting boards, and picture-frame profiles.
Celvolit LDM 5189 is prepared for paper-to-paperboard lamination by adjusting the pH to 4.5–5.0 with a 0.3–0.5 phr citric acid solution and thickening to 1,200–1,800 mPa·s with a non-ionic polyurethane associative thickener; the formulation is coated at 18–30 g/m² dry on the lighter web. At line speeds above 80 m/min, the production constraint is not the dispersion shear stability but the transfer efficiency of the engraved roller; a 60–70 line/cm ceramic anilox with a cell volume of 18–25 cm³/m² is used to maintain constant wet deposition. When board moisture exceeds 12%, the laminate is hardened through a 60–70 °C hot-air tunnel for 5–10 s immediately after the nip, and the gap pressure is set to 2.0–3.5 N/mm². This moisture threshold is critical because residual water at the adhesive-substrate interface retards coalescence of the vinyl acetate-ethylene dispersion and produces fibre tear reduction after 24 h conditioning. Under FDA 21 CFR 175.105, the dried adhesive may be used as an indirect food adhesive provided a functional barrier separates the bond line from the food contact surface, and under FDA 21 CFR 176.170 the finished paperboard must limit extractable adhesive components according to the conditions of use specified in the regulation. The resulting laminates are converted into folding carton side seams, label stock reinforced with 90–120 g/m² linerboard, and multi-ply solid board for industrial packaging.
Assembly glues formulated with Celvolit LDM 5189 as the primary binder are applied as single-component products for interior furniture joints at 150–200 g/m² single-sided. For load-bearing or kitchen and bathroom applications, a water-dispersible polyisocyanate is added at 5–10 wt% based on wet dispersion, and the open time at 23 °C and 50% relative humidity is reduced from 8–12 min to 6–9 min. The press condition for beech and oak assemblies is 0.8–1.5 N/mm² for 20–45 min; for high-density tropical species, press time is extended because higher extractive content inhibits film coalescence and interfacial water removal. Batch-to-batch variation in timber moisture above 14% is the primary cause of open-time drift on production lines. The adhesive is classified according to EN 204 and EN 205 for non-structural wood bonding, with the isocyanate-modified grade following the D3 wet-service sequence. End products include edge-glued panels, stair treads, and dowelled furniture joints.
| Formulation condition | Open time | Press time | EN 204 classification path |
|---|---|---|---|
| Celvolit LDM 5189 alone | 8–12 min | 45–60 min | D2 |
| With 5 wt% isocyanate crosslinker | 7–9 min | 35–50 min | D3 |
| With 10 wt% isocyanate crosslinker | 6–8 min | 30–45 min | D3 with reduced open time |
For electrostatically flocked polyamide or viscose fibrestock used in automotive glove box liners and upholstery accents, Celvolit LDM 5189 is combined with 2–3 wt% of a partially methylated melamine resin and 0.3–0.5 wt% ammonium chloride catalyst. The catalysed mix is screen-printed through a 24–43 mesh rotary screen at 100–160 g/m² wet, and the flock fibres with a length of 0.5–1.0 mm are applied in a 40–60 kV electrostatic field. The coated web is dried for 2–3 min at 130–150 °C to complete melamine crosslinking; under these conditions the dispersion builds wash resistance and dry rub resistance without external plasticiser addition. The finished flocked fabric is tested under ISO 12945-2 for pilling, ISO 105-X12 for dry crocking to grade 4, and DIN EN ISO 5981 for flex abrasion of coated fabrics. For automotive interior use, the wet dispersion is screened against VDA 278 for total VOC emissions below 100 µg/g and fogging condensate below 2 mg according to DIN 75201 B. This application segment is limited to synthetic fibre flock because natural cotton flock absorbs binder unevenly and increases viscosity drift during continuous screen printing.
Door panel insert lamination with Celvolit LDM 5189 uses a 60–80 g/m² dry adhesive layer sprayed onto an ABS/polycarbonate substrate after isopropanol surface cleaning. The facing material is a 0.8–1.2 mm thermoplastic olefin or PVC skin preheated to 50–60 °C. Vacuum laminating presses set to 0.6–1.0 bar vacuum and 5–8 s cycle time consolidate the layer; post-bond high-frequency welding of the map pocket and speaker grille is possible when the adhesive layer is below 0.3 mm thickness. Silane adhesion promoters used on polypropylene must be allowed to flash off for 20–30 s before adhesive application to avoid pH depression and premature coagulation. The cured part is aged for 72 h at 80 °C and tested under PV 3975 or equivalent OEM peel test, with minimum peel force of 3.0 N/25 mm after heat ageing. Compliance also includes screening against VDA 277 for total carbon emissions and DIN 75201 B for fogging of interior trim. Terminal products include door upper rolls, console side panels, and seat back trim laminates.
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Celvolit LDM 5189 is an aqueous vinyl acetate-ethylene (VAE) copolymer dispersion supplied for adhesive and binder formulations in which internal plasticization replaces external solvent or liquid plasticizer modification. The polymer architecture consists of vinyl acetate and ethylene comonomer units colloidally dispersed in water; the protective colloid and surfactant system stabilizes the particles against coagulation under defined shear and pH conditions. Unlike polyvinyl acetate homopolymer dispersions, the ethylene content reduces the glass transition temperature and minimum film-forming temperature without the addition of dibutyl phthalate, benzoates, or coalescing solvents.
The dispersion is supplied as a white, low-viscosity-to-medium-viscosity aqueous emulsion. Representative release bands for this product class are retained below as a process-control reference: solids 54–56 wt%, pH 4.0–5.5, Brookfield apparent viscosity at 25 °C of 1500–3500 mPa·s, and minimum film-forming temperature of approximately 0 °C. These ranges are typical for high-solids VAE dispersions; critical production decisions require the lot-specific certificate of analysis because product reformulation and regulatory alignment may alter released limits.
Lot release documentation for Celvolit LDM 5189 is structured around the following test-method matrix. The listed methods are used to control physical and chemical parameters that directly affect pumping behavior, film coalescence, and dried adhesive performance.
| Parameter | Test method designation | Control purpose |
|---|---|---|
| Non-volatile content | ISO 3251 | Sets dry film mass and viscosity correction allowances |
| pH | ISO 976 | Confirms dispersion stability and compatibility with acidic formulation additives |
| Brookfield apparent viscosity at 25 °C | ISO 2555 / ASTM D2196 | Guides transfer pump selection and coating head pressure |
| Minimum film-forming temperature | ISO 2115 | Determines the lower substrate or ambient temperature limit for continuous film deposition |
| Glass transition temperature | ISO 11357-2 | Characterizes polymer segmental mobility and adhesive hardness |
| Density | ISO 2811-1 | Calibrates mass-flow meters and package fill weight |
| VOC content | EPA Method 24 / ISO 11890-2 | Verifies low-emission classification and indoor air compliance |
| Residual vinyl acetate monomer | Headspace gas chromatography per ISO 13741-1 | Checks monomer odor and food-contact suitability |
The dispersion is not formulated for exterior ultraviolet exposure; prolonged ultraviolet light degrades the acetate polymer backbone. For interior packaging, laminating, and assembly applications, the absence of added plasticizers reduces odor, fogging, and plasticizer transfer in closed environments. Vinyl acetate-ethylene dispersions of this type are generally classified as weakly anionic; cationic flocculants, strong acids, and strong bases should not be added without mixing trials.
Production lots are supplied in bulk tankers, intermediate bulk containers, and drums. The product should be homogenized by gentle recirculation before use because storage can create a viscosity gradient from top to bottom. A lot-to-lot viscosity variation of approximately ±10% is typical; automatic coating lines should use in-line viscosity correction rather than fixed pump speed to avoid film weight drift when switching batches.
High-shear mixing, transfer pumping, and slot-die coating impose separate constraints on dispersion stability. The product behaves as a shear-thinning dispersion; apparent viscosity measured at low shear does not predict pressure drop across a 100 µm screen pack under high-shear conditions. In production layouts, progressive cavity or diaphragm pumps with stainless steel 316L wetted parts are preferred because they reduce shear heating. Unlined carbon steel, copper, and brass components should be avoided because the acidic pH range can leach metal ions that destabilize the dispersion.
Water addition is permitted only within narrow limits. If viscosity exceeds the upper release band, demineralized water should be added in 1 wt% increments while monitoring pH and solids; excessive dilution below 52 wt% solids may reduce wet tack and increase drying demand. Mixing should be executed with low-speed propeller agitation rather than high-shear dispersers. The incorporation of air during drum transfer is an observed production failure mode on open glue stations; entrained microfoam persists in the adhesive film and produces pinholes that reduce bond area measured under ISO 527-3 film tensile tests.
Storage temperature should be maintained between 5 °C and 35 °C. Freeze-thaw cycling is not acceptable; frost exposure causes irreversible coagulum separation. If bulk storage exceeds 30 days, pH and viscosity should be rechecked because slow hydrolysis of poly(vinyl acetate) segments can lower pH and raise viscosity over time. Transfer piping should be sized for wall shear rates below 500 s⁻¹; typical adhesive-room transfer lines of DN 25 to DN 40 are suitable for flow rates between 0.5 L/min and 5 L/min, but pressure-drop verification is required for the specific piping layout.
On high-speed case-sealing and carton-bonding lines, transfer from storage tanks to glue stations is carried out with 316L progressive cavity pumps and 100 µm nylon bag filters. A recurrent production bottleneck occurs when partially dried crust at the pump suction or tank hatch falls into the batch and blocks the first-stage filter. Operators should keep tank lids closed and recirculate slowly rather than shutting down the recirculation loop during shift changes. When properly conditioned, the dispersion can be applied through slot-die, roller, or wheel applicators; the selected orifice or doctor gap should be set according to coat weight, not to viscosity alone. Recommended starting coat weights for paper-to-paper lamination are 25 g/m² to 35 g/m², but published data for this specific configuration is limited and must be confirmed by tensile or peel testing.
Formulation compatibility with starch and poly(vinyl alcohol) carriers is often exploited in paper-laminating adhesives. Blends are prepared by adding the dispersion to a cooked starch or poly(vinyl alcohol) solution under low agitation. Phase separation is more likely when the starch solution is hot above 60 °C; addition below 40 °C is recommended. The resulting adhesive typically shows a thickening effect and improved machining on roller coaters, but wet tack must be revalidated with DIN EN 204 and ASTM D905 test protocols.
Minimum film-forming temperature (MFFT) is the temperature below which a continuous film cannot form from the dispersed polymer particles. For Celvolit LDM 5189, internal ethylene units depress the MFFT to approximately 0 °C, allowing film formation at lower temperatures than PVAc homopolymer dispersions without coalescing solvent. Above the MFFT, particle deformation and interdiffusion create a coherent film; below the MFFT, the dried layer remains particulate and develops discontinuities that lower adhesion measured according to ASTM D1876 T-peel and ISO 4624 pull-off tests.
A processing window of ±5 °C around the MFFT is operationally significant on unheated paper and board in low-humidity production environments. At relative humidity below 35%, film formation is further retarded because capillary pressure from water evaporation is lost before particle coalescence completes. Pre-drying at relative humidity above 60% or substrate heating to 15–20 °C above the MFFT is required when coating dense substrates with low absorbency. Without these measures, edge cracking and poor wet-out are observed on packaging board at speeds above 60 m/min.
The dried film develops hardness and cohesive strength through polymer chain entanglement and polar acetate interactions with cellulosic substrates. Unlike externally plasticized dispersions, the absence of a mobile plasticizer limits long-term embrittlement and adhesive bond shift. The trade-off is a higher minimum film-forming temperature than heavily plasticized formulations and a narrower low-temperature processing window. In high-speed corrugating and laminating, the adhesive is applied wet and immediately nipped. If the substrate surface is too dry and absorbs water too quickly, the VAE particles may not coalesce at the interface; the resulting bond has adequate dry strength but poor wet strength under DIN EN 204 durability classes. Pre-dampening or addition of 2–5 wt% of a high-viscosity starch solution can retard water loss, but formulation changes must be validated against DIN EN 204 and ASTM D905 shear tests.
When a laminating adhesive is reformulated from an externally plasticized PVAc homopolymer to Celvolit LDM 5189, the primary difference is internal ethylene plasticization. The replacement eliminates migratory plasticizer loss, reduces VOC content, and improves resistance to heat aging in bonded polyethylene terephthalate/board structures. However, the dried film of the VAE dispersion typically exhibits lower hardness than an over-plasticized PVAc homopolymer can achieve at high plasticizer levels. Mechanical property comparisons should be made using ISO 527-3 film tensile testing and ASTM D6862 peel testing on the actual substrate combination; published data for this specific configuration is limited.
In formulation, the product is compatible with common associative thickeners, poly(vinyl alcohol) solutions, and some starch-based carriers for paper adhesives. However, amine-based additives should be avoided because a rapid pH increase above 6.5 can destabilize the dispersion. Multivalent ions such as aluminum sulfate or calcium chloride at high concentration may also cause particle aggregation; any addition should be made as a dilute solution under slow agitation. Defoamer selection must be based on non-ionic or weakly anionic chemistries, as some cationic surfactants can interact with the anionic particle surface.
The product differs from self-crosslinking VAE dispersions that contain N-methylolacrylamide. Unless the manufacturer states self-crosslinking functionality, the film remains thermoplastic and is redispersible only under strongly alkaline conditions. Compared with acrylic dispersions, the VAE backbone typically displays higher polar surface energy after drying; wetting and adhesion comparisons should be made using ISO 19403-2 contact-angle measurements and ASTM D1876 peel tests. Blocking resistance should also be evaluated under ISO 9117-3 or ASTM D4946 because the ethylene content reduces glass transition temperature and may increase tack under heat and pressure.
Regulatory alignment for food-contact packaging adhesives should be verified against the current manufacturer’s bulletin. Relevant sections may include 21 CFR 175.105 for indirect food additives as adhesives and 21 CFR 176.170 or 21 CFR 176.180 for paper and paperboard components. Compliance is formulation-dependent and requires confirmation that all additives and catalysts in the finished adhesive are also permitted for the intended use.
