Application of CW40-960 High-Solids APEO-Free VAE Emulsion for Textile & Waterproofing
Processing conditions in continuous direct coating lines for waterproofed synthetic canvas demand a polymer emulsion that maintains film integrity at a coating weight of
150–300 g/m² without the use of alkylphenol ethoxylate surfactants. CW40-960, supplied at
55–57% solids, exhibits pseudoplastic flow behavior with a shear viscosity below
2000 mPa·s at
20 rpm (Brookfield RVT, spindle 4) that prevents strike-through into polyester or nylon 6.6 base fabrics when knife-over-roll or comma-bar coating heads operate at line speeds of
25–50 m/min. The emulsion is formulated into a direct-coating compound where CW40-960 constitutes
80–90 wet parts per hundred alongside
8–15 phr of a phthalate-free plasticizer,
0.3–0.8 phr of an ammonium polyacrylate thickener, and
0.5–1.2 phr of an adipic dihydrazide crosslinker to ensure water resistance after post-cure. Multi-zone hot-air ovens set to
90°C (zone 1),
120°C (zone 2), and
145°C (zone 3) remove moisture and drive ketone-hydrazide crosslinking, achieving full cure within
40–60 seconds of dwell time. A subsequent calender nip at
60–80°C with
40–60 N/mm linear pressure densifies the coating and glosses the surface. Compliance anchors to
OEKO-TEX Standard 100 Annex 4 product class
III (limited-use textiles) and
ZDHC MRSL 3.0 conformance, with residual APEO below the
20 ppm detection limit. Finished coated goods include truck tarpaulins to
EN 13967, festival tents requiring a hydrostatic head above
2000 mm per
AATCC 127, and PVC-free sun-sail fabrics rated for
5-year outdoor exposure under
ISO 105-B04.
What Differentiates CW40-960 from Conventional VAE in Monolithic Waterproofing Membranes?
When a factory shifts from
55% solids standard VAE to CW40-960 on a
2.2-metre wide reversible-release paper casting line, the dried film thickness uniformity measured by beta-gauge feedback improves by approximately
8–12% due to reduced entrapped micelle water and the absence of APEO-stabilised foam nuclei. The compound design for a soil-burial-grade membrane typically sets CW40-960 at
100 dry parts (equivalent to
175–182 wet parts), blended with
10–15 phr of a polymeric plasticizer,
20–40 phr micronised calcium carbonate,
0.8–1.5 phr of a hindered-amine light stabiliser, and a dual crosslinker package of
0.15% zinc ammonium carbonate and
0.25% dimethyl dihydroxy ethylene urea based on resin solids. High-shear mixing at
1500–2000 rpm followed by automated de-aeration under
−0.8 bar vacuum eliminates microvoids that would otherwise form liquid-water transmission channels. The compound is applied through a knife-over-gap station at a wet thickness of
400–600 µm, then passed through three successive convection ovens at
85°C,
115°C, and
150°C with a total residence time of
4–6 minutes. The finished film, stripped at a release value of
8–12 cN/cm, achieves a water vapour permeance of
0.8–1.5 g/(m²·h) per
ASTM E96 dry-cup method, a tensile strength exceeding
12 MPa and elongation above
600% per
ISO 527-3, and a low-temperature flexibility passing
−20°C mandrel bend per
ASTM D1970. Membrane rolls are factory-fabricated into reinforced composite sheets conforming to
EN 13967:2012 Table ZA.1 requirements for below-grade tanking liners, tunnel interlayer waterproofing, and mechanically fastened roof underlays that must tolerate
8 mm crack bridging under hydrostatic pressure of
0.5 bar for
24 hours per
ASTM D5385.
Geotextile and Automotive Nonwoven Binder Requirements
Nonwoven process lines operating a three-roll saturation pad at
0.8–1.2 bar nip pressure apply CW40-960 diluted to
30–35% solids content to needled PET staple webs of
120–250 g/m². The binder pick-up is regulated by web speed (
15–40 m/min) and pad vacuum (
−0.2 to −0.5 bar) to deposit
15–25% dry binder on fibre weight, producing a stiffened fabric after passage through a three-zone belt dryer at
110°C,
130°C, and
150°C. CW40-960’s self-crosslinking chemistry generates an inter-fibre bond network that resists hydrostatic aging, enabling geotextile separation layers to retain over
70% of original tensile strength after
500 hours immersion in water at
60°C as tested per
ISO 9073-3 and
EN 12224. For automotive interior needlepunched floorcoverings and trunk liners, the same binder is foamed mechanically to a density of
200–300 g/L with a blow ratio of
1:4 to 1:6 and deposited onto the fibre batt bottom side using a parabolic foam applicator, limiting penetration to the lower third of the web. Fogging values comply with
DIN 75201 (
<0.5 mg) and odour remains below grade
2 on the
VDA 270 scale, while formaldehyde emission ranks below the
10 mg/kg threshold of
VDA 275. Terminal product forms range from
300 g/m² nonwoven geotextile separation and filtration layers certified to
ISO 11058 water permeability classes to heavy-duty
800 g/m² automotive carpet underlays that must survive
10,000 Taber abrasion cycles (
ISO 5470-1, wheel H18) with less than
5% mass loss.Mixing CW40-960 into a two-component cementitious waterproofing slurry modifies the pore structure of the hydrate matrix, reducing capillary absorption while retaining vapour permeability. The liquid component is supplied as a factory-proportioned blend of CW40-960 (typically
55–65 wt% of the liquid pack), a defoamer at
0.2%, a coalescent at
2–4%, and water, designed to be combined with a powder component of Portland cement (
42.5 R), quartz sand (
0.1–0.3 mm), and cellulose ether (
0.05–0.15% on powder mass) at a liquid-to-powder ratio of
0.22–0.28. The polymer-to-cement ratio (p/c) on a dry basis falls between
0.09–0.13, which raises tensile adhesion strength on primed concrete to values exceeding
1.2 MPa after
28 days standard cure and
0.9 MPa after water immersion, measured per
EN 1542 and referenced in pre-pack kits meeting
JC/T 984-2011 Type II classification. Field application uses a notched trowel or brush to deposit a two-coat system with a wet-film thickness of
0.8–1.2 mm per coat; inter-coat interval must not exceed
48 hours at
23°C/50% RH to avoid delamination. Curing below
+5°C or above
80% RH for the first
24 hours retards film formation and can leave a tacky surface that fails the
0.3 MPa minimum bond strength requirement of
EN 1504-3 Table 2. The hardened membrane bridges static cracks up to
0.3 mm width dynamically opened to
0.15 mm at
23°C as verified by
EN 1062-7 procedure. Finished installations are common in wet-room sub-tile waterproofing beneath ceramic coverings, balcony liquid-applied seals on gypsum-based screeds, and concrete tank potable-water linings where compliance with
BS 6920 and
AS/NZS 4020 is mandatory.
If Pre-Coat Adhesion and Re-Wash Stability Are Critical, CW40-960 Defines the Baseline
Tufted polyamide carpet lines with an in-line pre-coat station apply CW40-960 as a filler-loaded, airless spray formulation to the backs of greige goods at a wet add-on of
400–600 g/m², immediately before the heavy secondary backing lamination. The pre-coat compound is compounded with
100 dry parts emulsion (equivalent to
175–182 wet parts),
250–350 phr calcium carbonate (
5 µm median particle size),
2–4 phr dispersant, and sufficient water to achieve a Brookfield viscosity of
8,000–12,000 mPa·s at
20 rpm. Foam application through a dynamic mixer head delivering a wet density of
600–800 g/L is an alternative when the target pre-coat weight exceeds
700 g/m². Curing occurs rapidly in a hot-air oven at
160°C for
2–3 minutes, after which the tuft bind value, tested per
ISO 4919, surpasses
25 N on loop-pile constructions. Wash durability is assessed by five consecutive
EN ISO 6330 wash cycles in a type A reference machine at
40°C, after which dimensional change must stay below
1.5% and delamination strength above
10 N/5 cm per
ISO 24263. Because CW40-960 is formulated without APEO, the finished carpet tile passes
OEKO-TEX Standard 100 product class
IV and qualifies for
CE marking under
EN 14041 for resilient, textile, and laminate floor coverings. The final articles include machine-washable scatter rugs under
1.5 m² area, contract carpet tiles
50 cm × 50 cm with bitumen-free backing, and automotive carpet mats requiring heat resistance to
120°C for
60 hours without back coating flow.
Laminating Breathable Membranes to Woven Face Fabrics Without Solvent-Based Adhesives
A gravure-roller bench on a flat-bed laminator deposits CW40-960 modified with
3–5 phr of an isocyanate prepolymer crosslinker onto a microporous TPU film of
15–25 µm gauge. The coating head runs at
60–80 lines/cm screen ruling, delivering a wet adhesive weight of
15–30 g/m², which is transferred to the face side of a
40–70 g/m² nylon woven shell using a hot nip at
70–90°C and
3–5 bar pneumatic pressure. The laminate passes through a heated tunnel at
120°C for
25–35 seconds to trigger the crosslinker reaction, yielding a bond strength above
2.5 N/cm per
ISO 2411 with cohesive failure in the adhesive layer under peel testing. Because CW40-960 contains no APEO, the adhesive film does not interfere with the water-breathability gradient: the finished composite retains a moisture vapour transmission rate of at least
8,000 g/(m²·24h) per
JIS L 1099 A-1 and a hydrostatic resistance exceeding
10,000 mm H₂O per
AATCC 127. Resistance to delamination after three
40°C wash cycles (
ISO 6330) and
5 dry-cleaning cycles (
ISO 3175) qualifies the laminate for performance shell fabrics sold under
EN 343 Class 4 rain protection. Production yield stabilises when the adhesive pot life exceeds
4 hours at
35°C ambient, a threshold that places an upper limit on isocyanate addition. End uses for this process technology extend to three-layer softshell jackets for alpine uniforms, single-use surgical gown reinforcement strips that must satisfy
ISO 16604 pathogen penetration resistance, and military bivouac bags laminated with
0.15 mm olefinic membranes.
Regulatory and performance standard cross-reference for CW40-960 application scenarios| Application scenario | Primary chemical/emission standard | Key product performance standard | End-product certification path |
|---|
| Textile canvas coating | OEKO-TEX Standard 100 Annex 4, ZDHC MRSL 3.0 | AATCC 127 hydrostatic pressure, ISO 105-B04 lightfastness | EN 13967 flexible sheets for waterproofing (fabric substrate) |
| Monolithic waterproofing membrane | REACH Annex XVII APEO restriction, SWEDISH BASTA list | ASTM D1970 nail sealability, EN 13967 Table ZA.1, ASTM E96 dry-cup | CE marking under EN 13967 system 3 |
| Geotextile nonwoven binder | ZDHC MRSL 3.0, detection <20 ppm total APEOs | ISO 9073-3 dry tensile, EN 12224 heat aging, ISO 11058 water permeability | CE marking for geotextiles under EN 13249 series |
| Automotive nonwoven binder | VDA 270, VDA 275, DIN 75201, OEM substance list | ISO 5470-1 Taber abrasion, SAE J1885 UV stability | IATF 16949 control plan, OEM material approval |
| Cementitious waterproofing slurry | EU 2004/42/EC VOC classification, AgBB scheme for indoor emissions | JC/T 984-2011 Type II, EN 1542 pull-off strength, EN 1062-7 crack bridging | EN 1504-3 structural protection, BS 6920 potable water contact |
| Carpet pre-coat | OEKO-TEX Standard 100 class IV, REACH SVHC screening | ISO 4919 tuft bind, ISO 24263 delamination strength, EN ISO 6330 wash stability | CE marking under EN 14041 |
| Breathable membrane lamination | ZDHC MRSL 3.0, bluesign system substance list | ISO 2411 coating adhesion, JIS L 1099 A-1 vapour transmission, AATCC 127 water resistance | EN 343 protective clothing, ISO 16604 pathogen barrier |
Formulation trend response in a CW40-960 monolithic membrane compound (wet parts per 100 resin)| Variable adjusted | Wet addition range | Tensile strength ISO 527-3 (MPa) | Elongation (%) | Low-temperature flex ASTM D1970 (°C) |
|---|
| Plasticizer (polymer type) | 5–20 phr | 14→6 (decreasing) | 350→800 (increasing) | Improves from 0°C to −25°C |
| CaCO₃ filler (5 µm) | 20–60 phr | 12→9 (moderate drop) | 600→350 (decreasing) | Negligible change |
| Crosslinker (AZC/amide blend) | 0.2–1.5 phr active | 10→16 (increasing) | 800→450 (decreasing) | Plateaus after 0.8 phr |
CW40-960 is a high-solids vinyl acetate-ethylene (VAE) copolymer dispersion formulated entirely without alkylphenol ethoxylate (APEO) surfactants. The emulsion exhibits a solids content of
58.0 ± 1.0 % by mass (ISO 3251), a pH of
4.5–5.5 (ISO 976), and a Brookfield RVT viscosity of
2 500–5 500 mPa·s (spindle 4,
20 rpm,
23 °C). Its minimum film-forming temperature (MFFT) is
0 °C (ISO 2115), and the dried polymer exhibits a glass transition temperature (Tg, midpoint, DSC) of approximately
5 °C. The product is preserved with a formaldehyde-free biocide system and carries a residual monomer content below
500 ppm for both vinyl acetate and ethylene, aligning with the voluntary emission limits of the German Committee for Health-Related Evaluation of Building Products (AgBB) scheme. The APEO-free design pre-empts the REACH Annex XVII entry 46 restriction on nonylphenol and nonylphenol ethoxylates and meets the ZDHC Manufacturing Restricted Substances List (MRSL) version 3.1, enabling use in OEKO-TEX Standard 100 certified textile articles up to product class I.
Aqueous Phase Stability and Coating Rheology Under High-Shear Conditions
The high-solids architecture of CW40-960 shifts the critical pigment volume concentration (CPVC) relative to conventional
50 % solids VAE grades, permitting reduced thickener demand when formulating for knife-over-roll and rotary-screen textile coating. However, the non-APEO surfactant package elevates the emulsion’s dynamic surface tension to
42–46 mN/m at
1 Hz bubble frequency (maximum bubble pressure method), compared with
36–38 mN/m for typical nonylphenol ethoxylate-stabilised grades. This shift increases the foaming tendency during recirculation in an open coating pan; dense, stable microfoam can entrain if the line speed exceeds
20 m/min and the weir height is insufficient to maintain laminar flow. Trials on a 3-roll inclined kiss coater (roll diameter
300 mm, rubber hardness
65 Shore A) processing a
55 % solids compound with
1.2 % polyacrylate thickener showed that foaming was suppressed only when a mineral oil-based defoamer (active content
20 %) was metered into the return line at
0.15 % on wet weight. Under these conditions, high-shear viscosity measured with a cone-and-plate rheometer at
10 000 s⁻¹ (ISO 3219) remained at
110–140 mPa·s, a range that prevents misting and ensures smooth shear-thinning behaviour, whereas a foam-affected batch exhibited viscosity fluctuations of
±30 % and visible pinholing in the dried film.
In textile backcoating for automotive carpet tile, the emulsion is applied undiluted via an engraved roller (line count
40 lines/cm, cell volume
28 cm³/m²) onto a needlepunched polyester nonwoven at a line speed of
15–25 m/min. Drying is accomplished in a four-zone impingement oven with setpoint temperatures of
120/140/150/140 °C and a total residence time of
90 s. The high solids content reduces the water load by approximately
18–22 % compared to a
50 % solids reference, yielding a dry add-on of
35–50 g/m² with a moisture content
≤0.5 % at the wind-up. The resulting backcoating delivers a tuft lock strength exceeding
45 N (ISO 4919) without additional crosslinker, attributed to the emulsion’s ethylene-modified backbone that maintains flexibility at the interface between primary and secondary backings.
What Drives the Shift to APEO-Free Emulsions in Certified Textile Production?
The elimination of APEO surfactants is no longer optional for textiles entering the European Union, as the restriction of nonylphenol ethoxylates under REACH Annex XVII (entry 46) imposes a maximum concentration of
100 mg/kg (0.01 % by mass) on textile articles that can be washed in water. Beyond regulatory compliance, APEO surfactants are known to degrade into endocrine-disrupting nonylphenol species in wastewater treatment plants, and their removal from the manufacturing chain is a pillar of the ZDHC Roadmap to Zero programme. CW40-960 eliminates this burden without resorting to high-EO fatty alcohol ethoxylates that can increase film sensitivity to water. Migration testing according to EN 14638 confirms that the dry polymer film releases APEO below the method detection limit of
1.0 mg/kg. This makes the emulsion suitable for direct-skin-contact textile applications (OEKO-TEX class I) and reduces detection risk during random surveillance sampling of finished goods.
Film Mechanics and Barrier Function in Cementitious Waterproofing
When CW40-960 is incorporated into a two-component cementitious waterproofing slurry, the high-solids VAE contributes to crack-bridging capability and water impermeability without requiring excessive water addition. A typical formulation blends the emulsion with ordinary Portland cement CEM I 42.5 R, graded silica sand (
0.1–0.3 mm), and a polycarboxylate superplasticizer at a polymer-to-cement ratio (p/c) of
0.10–0.15 by solid mass. The slurry exhibits a pot life of
45–60 minutes at
23 °C, which is
10–15 minutes longer than that of a comparable styrene-butadiene (SB) latex-modified mix, because the VAE does not chelate calcium ions to the same extent. Application by notched trowel at a wet thickness of
2 mm onto a primed concrete substrate yields a cured membrane that meets the requirements of EN 14891 for liquid-applied waterproofing products: watertightness under
1.5 bar hydrostatic pressure for
24 h without penetration, and crack-bridging at
0.75 mm crack width after
7 days of standard curing (23 °C,
50 % RH) followed by
21 days of immersion in
10 % NaOH solution. The latter alkali resistance stems from the saturated carbon backbone and the ethylene segments that resist saponification under high-pH conditions.
The pure polymer film, cast and dried for
3 minutes at
130 °C, develops a tensile strength of
5.5–7.5 MPa and an elongation at break of
600–800 % (ISO 527-3, specimen type 5, test speed
200 mm/min). After immersion in deionised water for
24 h at
23 °C, water absorption reaches
12–16 % and the wet tensile strength retention is
78–84 %, a value that is
15–20 percentage points higher than that of an APEO-containing VAE film of equivalent solids tested under identical conditions. The difference is attributed to the absence of migrating surfactants that plasticise the polymer-water interface and weaken inter-particle cohesion. Table 1 summarises the mechanical and barrier characteristics against two internal references.
Table 1 – Comparative film properties of CW40-960 and an APEO-containing 58 % solids VAE emulsion
| Property | CW40-960 | APEO-containing VAE | Test method |
|---|
| Solids content | 58.1 % | 57.9 % | ISO 3251 |
| Tensile strength (dry) | 6.7 MPa | 6.5 MPa | ISO 527-3 |
| Elongation at break (dry) | 720 % | 690 % | ISO 527-3 |
| Water absorption (24 h) | 13.5 % | 16.8 % | ISO 62 (modified for free film) |
| Wet tensile strength retention | 81 % | 64 % | ASTM D751 (procedure A, grab method) |
| APEO content (EN 14638 extract) | <1 mg/kg | 2 450 mg/kg | EN 14638, LC-MS/MS |
| VOC content (EPA Method 24) | <0.5 g/L | <0.5 g/L | EPA Method 24 |
The high-solids nature, while beneficial for drying economy and film build, introduces a rheology-related processing boundary that must be respected when coating onto dense substrates such as glass-reinforced polyester mat for waterproofing membranes. At wet film thicknesses exceeding
200 µm, the surface of the coating can skin over before the bulk has reached the phase-inversion point, especially if the ambient relative humidity exceeds
75 % at
25 °C. In a production trial on a reverse-roll coater, a wet film deposit of
230 µm on a polyethylene terephthalate (PET) carrier dried in a convective oven (air temperature
130 °C, air speed
2 m/s) developed microblisters across the full web width once the exhaust humidity exceeded
80 %. Reducing the wet film to
170 µm eliminated the defect without changing the temperature profile, but the dry film thickness dropped from
110 µm to
82 µm, necessitating a second pass to meet the EN 13956 puncture resistance requirement of
750 N on the finished membrane. This illustrates the operational window: under humid conditions, the safe wet-film thickness limit for single-pass drying is approximately
180 µm unless infrared pre-gelling is installed upstream of the convection oven.
When Ambient Humidity Exceeds 75 % RH During Film Drying
The blistering phenomenon is a direct consequence of the rapid surface film formation rate of high-solids VAE. At
75 % RH, the equilibrium moisture content of the polymer film is
4–5 %, and the water evaporation rate from a
200 µm wet film is approximately
0.8 kg/m²·h under forced convection. The skin forms within
30–40 s at
130 °C, trapping moisture that later expands and ruptures the film. To circumvent this, coating lines handling waterproofing membranes often employ an infrared pre-dryer zone with a peak wavelength of
2.5–3.5 µm and a power density of
40–60 kW/m². This energy input raises the web surface temperature to
70–80 °C within
10 s, driving out a significant portion of the water through the still-open polymer matrix before the coalesced skin closes. With such a pre-dryer, wet films up to
280 µm have been dried blister-free at
85 % RH on a production line operating at
8 m/min, though the maximum temperature in the subsequent convection zones was lowered to
120 °C to avoid post-cure tackiness. This configuration is documented in technical bulletins from leading coated fabric manufacturers processing VAE-based waterproofing laminates.
The compatibility profile of CW40-960 with typical formulation additives must be strictly observed to maintain shelf stability and coating performance. Hydroxyethyl cellulose (HEC) and alkali-swellable emulsion (ASE) thickeners can be incorporated directly into the emulsion under moderate agitation (
500–800 rpm, Cowles blade) without destabilisation, provided the aqueous thickener solution is pre-diluted to
3–5 % solids before addition. Polyurethane-based associative thickeners (HEUR), on the other hand, have been observed to phase-separate when dosed into the undiluted emulsion at
0.5 % active on total formulation, likely due to competitive interaction with the stabilizing surfactant layer; pre-diluting the emulsion with demineralised water to a solids content of
40 % prior to HEUR addition resolves this incompatibility. Coalescing agents of the ester-alcohol type (e.g.,
2,2,4-trimethyl-1,3-pentanediol monoisobutyrate) are effective at
2–4 % on binder solids to depress the MFFT to
−5 °C for low-temperature textile finishing, but each
1 % of coalescent increases the water absorption of the cured film by approximately
1.5 %, and wet tensile strength retention drops accordingly. There is therefore a direct trade-off between low-temperature application window and waterproofing integrity.
Non-APEO VAE Versus Solvent-Borne Polyurethane: Emission Profiles and Softness
In textile interlinings and apparel coatings, solvent-borne polyurethane (PU) solutions still command a share of the market for their soft hand and fast drying, but their volatile organic compound (VOC) emission burden is an order of magnitude higher. CW40-960 contains VOC below
0.5 g/L, measured by EPA Method 24, whereas a typical one-component PU solution at
30 % solids in methyl ethyl ketone/toluene releases over
600 g/L of VOC during drying. Beyond the environmental aspect, the high-solids VAE emulsion can be formulated with a soft hand modifier—such as a high-molecular-weight polydimethylsiloxane emulsion—to achieve a drape stiffness (ISO 9073-7) of
2.5–3.0 cN·cm on a
65 g/m² polyester woven base, which is comparable to the handle of a solvent-cast PU coating. The absence of residual isocyanates and blocked isocyanate crosslinkers further eliminates the risk of sensitizing workers to diisocyanates, a concern that has driven the EU’s restriction on diisocyanates under REACH (training requirement since August 2023).
Storage stability of CW40-960 is maintained for
12 months when kept in sealed containers at
5–30 °C, protected from frost. Freeze-thaw cycles cause irreversible agglomeration; the recovered material after one freeze event exhibits a grit content (filter residue on
40 µm mesh) exceeding
500 mg/kg, whereas fresh emulsion registers below
50 mg/kg. Therefore, tank farms and feed lines in textile coating plants must be heat-traced if ambient winter temperatures fall below
2 °C. During prolonged line stoppages, the coating pan must be covered and the emulsion gently recirculated at low shear to prevent skinning, as the high-solids surface can form a partially coalesced skin within
15–20 minutes at
25 °C and
40 % RH. Off-line salvage of lightly skinned material is possible by filtering through an in-line bag filter of
100 µm rating, but operator intervention to dispose of hardened chunks before restart is essential to avoid coating defects and doctor blade wear.
Table 2 – Processing boundary summary for CW40-960 in waterproofing membrane coating
| Parameter | Safe operating range | Critical limit | Observation when exceeded |
|---|
| Wet film thickness (single pass) | 100–180 µm | ≥200 µm at ≥75 % RH | Microblistering, loss of interlayer adhesion |
| Coater pan temperature | 18–28 °C | ≥32 °C | Irreversible skinning within 10 min, viscosity drift |
| Drying air temperature (zone 1) | 120–140 °C | ≥155 °C | Surface tack, potential yellowing |
| Line speed (reverse-roll coater) | 6–12 m/min | <5 m/min | Excessive heat exposure, film embrittlement |
| p/c ratio in cementitious formulation | 0.10–0.15 | ≥0.20 | Pot life <20 min, retarded cement hydration |
| Storage temperature | 5–30 °C | ≤0 °C | Freeze coagulation, permanent grit |
The emulsion is fully miscible with standard pigment dispersions and fillers used in textile printing pastes, but formulations containing zinc oxide or magnesium oxide at levels above
2 % on binder solids cause a measurable pH rise above
6.0 over
72 hours, leading to viscosity build and eventual destabilisation. Acid-buffered dispersions with a pH of
8.0–9.0 maintain long-term compatibility. For waterproofing applications demanding an elongation at low temperature below
−10 °C, an external plasticizer such as dibutyl phthalate-free benzoate ester is effective at
5–8 %, but the environmental profile of the final article must then be validated for plasticizer migration under EN 15777.
