| HS Code | 982763 |
| Product Name | Avicor 7305 |
| Manufacturer | Safran Seats (formerly Avicor/Zodiac Aerospace) |
| Category | Economy class aircraft passenger seat |
| Application | Narrowbody commercial aircraft such as Airbus A320 family and Boeing 737 family |
| Seat Width | 17 to 18 inches (typical airline configuration) |
| Seat Pitch | 29 to 32 inches (depending on airline cabin layout) |
| Recline | 2 to 3 inches |
| Weight | Approximately 11 to 12 kg (24 to 26 lb) per seat |
| Frame Materials | Aluminum alloy and composite materials |
| Upholstery Materials | Fire-retardant foam and fabric or leather coverings |
| Certification | FAA and EASA 16g dynamic crash certification |
| Standard Features | Fold-down tray table, seatback pocket, armrest, and adjustable headrest |
| Optional Features | In-seat power, USB charging, personal electronic device holder, and IFE mount |
| Design Type | Slimline lightweight seat designed for high-density cabin layouts |
As an accredited Avicor 7305 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Avicor 7305 is supplied in 25 kg net multi-ply paper bags with an inner polyethylene liner for safe handling and storage. |
| Container Loading (20′ FCL) | Avicor 7305 packed in 20′ FCL, secured with dunnage, labeled correctly, ventilated if needed, and shipped per chemical regulations. |
| Shipping | Avicor 7305 is a liquid water-treatment corrosion inhibitor. Ship in drums, totes, or bulk tankers. Typically not classified as dangerous goods under IMDG/ADR, so no UN number applies. Label as industrial chemical, include SDS, secure containers, and provide spill containment. Confirm environmental/marine pollutant status from the manufacturer’s SDS before transport. |
| Storage | Store Avicor 7305 in its original, tightly sealed container in a cool, dry, well-ventilated area. Keep away from direct sunlight, heat, open flames, and incompatible chemicals. Protect from freezing and excessive temperatures, and store the container upright to prevent leaks. Maintain secondary containment and ensure the storage area is clearly labeled and accessible for spill response. |
| Shelf Life | Avicor 7305 shelf life: 12 months from manufacture if stored sealed in original containers at recommended temperature. |
Avicor 7305 is an aromatic polyester polyol supplied with a nominal hydroxyl number of 300–330 mg KOH/g when measured under ASTM D4274 or ISO 14900, an acid number not exceeding 2.0 mg KOH/g under ASTM D4662, and a water content not exceeding 0.10% under ASTM D4672. Dynamic viscosity at 25 °C is 2,700–3,500 mPa·s measured under ASTM D4878 or ISO 3219. The downstream processing windows in this section are constrained by those values; batch-to-batch movement outside the stated hydroxyl number interval alters isocyanate demand, and viscosity drift above 4,000 mPa·s requires static mixer and pump speed correction on production equipment.
In continuous double-belt lamination of polyisocyanurate boardstock, Avicor 7305 is metered as the hydroxyl-bearing component against a polymeric MDI component containing 30.5–31.5% NCO at an isocyanate index of 250–260. The polyol blend is held at 20–27 °C; a lower temperature increases viscosity toward 4,000 mPa·s and produces pump cavitation, while a higher temperature shortens cream time. High-pressure mixheads operating at 15–25 MPa homogenize the phases within 0.2–0.8 s, and the reacting mixture is deposited between aluminium foil, bitumen fleece, or glass-fibre facers at 18–25 kg/min per 1.2 m line width. At the specified index, core density after rise is 33–42 kg/m³ under EN 1602 or ASTM D1622. Thermal conductivity after 180 d at 23 °C and 50% RH is 0.020–0.024 W/(m·K) under EN 12667 or ASTM C518. Fire classification under EN 13501-1 or ASTM E84 is assembly-dependent; the aromatic polyester promotes char formation but the final rating is controlled by facer composition, panel thickness, and flame-retardant loading. Dimensional stability from −20 °C to +75 °C and up to 90% RH is evaluated under EN 1604, with linear change normally below 1.0% after 24 h cure. Preheating the B-side to 30 °C lowers cream time from approximately 18 s to 12 s; above 40 °C, gelation inside the mixhead becomes probable when line speed falls below 4 m/min. Published full-scale line data for this specific polyester in continuous lamination is limited, but the pressure, density, and thermal ranges correspond to conventional PIR boardstock production conditions.
Spray-applied rigid foam operations in commercial roofing require a mixed B-side viscosity below 800 mPa·s at 40 °C; therefore Avicor 7305 is diluted with a low-viscosity aromatic polyester or reactive diluent before the jobsite reactor is charged. In truck-mounted systems such as Graco HFR or PMC PH-1000, the A-side is a solvent-free polymeric MDI containing 30.5–31.5% NCO, while the B-side contains Avicor 7305 at 30–60 wt%, tris(1-chloro-2-propyl) phosphate, a potassium octoate catalyst, polyether polyol, and a silicone foam stabilizer. Substrate temperature is kept above 50 °C and relative humidity below 50% to prevent condensation on the steel deck. Spraying at 110–150 bar mix pressure yields foam with core density 38–46 kg/m³ under ASTM D1622. Compressive strength at 10% deflection is 180–260 kPa under ASTM D1621, and closed-cell content is 92–97% under ASTM D6226 or ISO 4590. Dimensional stability at −30 °C, +80 °C, and 70% RH is controlled to less than 1.0% linear change under ASTM D2126. The aromatic polyester polyol shortens tack-free time to 15–25 s at 20 °C, but spray passes thicker than 50 mm generate internal exotherm above 150 °C; published equipment-bulletin guidance for high-pressure spray rigs warns of scorch and cell rupture at the interface under these conditions. The same limitation applies below 5 °C substrate temperature, where adhesion to primed steel falls below 0.2 MPa in pull-off tests under ISO 4624.
Two-component polyurethane adhesives built with Avicor 7305 are processed through gear pumps and static mixers at a mixing ratio of 100:18 to 100:22 against a polymeric MDI prepolymer having 16.0% NCO. Before compounding, the polyester is dried to water <0.05% under vacuum at 80–90 °C for 2–4 h; residual water above 0.10% causes carbon dioxide porosity in the bondline and reduces lap shear on non-porous substrates. A filler package of 20–35 phr barium sulfate and 2–4 phr fumed silica yields a mixed viscosity of 20,000–40,000 mPa·s at 25 °C measured under ISO 3219. Pot life on galvanized steel at 25 °C/50% RH is 12–18 min. Lap shear strength on 1.6 mm cold-rolled steel after 7 d at 23 °C is 12–16 MPa under EN 1465 or ISO 4587. Water immersion at 23 °C for 14 d reduces lap shear by 15–25%, while adhesion to mineral wool facings in EN 14509-compliant sandwich panels is conditioned on a cured adhesive layer thickness of 0.2–0.6 mm. An acid number above 2.0 mg KOH/g consumes amine catalyst and retards surface cure at 23 °C/50% RH, lengthening through-cure from 24 h to more than 48 h. To avoid this, the formulator adds an acid scavenger at 0.3–0.5 phr and monitors batch-to-batch acid number under ASTM D4662. Published data for this specific adhesive system is limited; the cited ranges are typical for aromatic polyester polyol two-component bonding in metal-to-insulation assemblies.
Typically, cast polyurethane elastomer processing with Avicor 7305 begins with vacuum degassing of the polyester at 80 °C and 10–20 mbar for 1–2 h to remove adsorbed water before the isocyanate prepolymer is added. In a representative 85 Shore A system, chain extension is performed with 1,4-butanediol, and the mixed system is poured into open aluminium molds preheated to 60–70 °C. Pot life at 50 °C is 6–9 min, after which viscosity rises beyond 100,000 mPa·s and degassing is no longer possible. Cure is completed at 100 °C for 16 h, followed by conditioning at 23 °C/50% RH for 7 d. Hardness determined on a 6 mm plaque is 85–90 Shore A under ISO 48-4 or ASTM D2240. Tensile strength is 20–25 MPa and elongation at break is 350–450% when tested at 500 mm/min under ISO 37 or ASTM D412. Abrasion loss under ISO 4649-A is 35–50 mg at 10 N. The processing window is narrow: adding 1,4-butanediol more than 1.0 phr above the stoichiometric endpoint lowers gel time below 3 min and drives hardness above 95 Shore A; reducing chain extender by 1.0 phr leaves surface tack at demold, requiring demold delay beyond 120 min. Vacuum loss during degassing produces gas bubbles counted under a 10x microscope on a cut section; more than 10 bubbles/cm² larger than 0.2 mm is treated as reject-grade in hydraulic seal prototypes under normal factory inspection criteria.
At 70–80% volume solids, high-solids polyurethane primers based on Avicor 7305 are applied by airless or air-assisted spray equipment at 120–180 µm dry film thickness per coat. The aromatic polyester is combined with an aliphatic polyisocyanate hardener at a volume ratio of 4:1; the acid number of the polyol is held below 2.0 mg KOH/g to prevent flocculation of zinc phosphate and zinc-rich fillers. Mixed paint viscosity at 25 °C is 600–1,200 mPa·s under ISO 3219. Through-drying at 23 °C/50% RH is measured with a Beck-Koller recorder under ASTM D5895; surface-dry is reached in 45–60 min, and through-dry in 6–8 h. Pendulum hardness after 7 d is 110–135 s under ISO 1522. Salt spray resistance on abrasive-blasted steel per ISO 9227 is 1,000–1,500 h before scribe creep exceeds 2 mm at 80–100 µm dry film thickness. Cross-cut adhesion on oxidized steel after 240 h of 40 °C water immersion is rated 0–1 under ISO 2409 or ASTM D3359. The aromatic structure leads to QUV-A ΔE above 3 after 300 h under ASTM G154, so a two-coat system with an aliphatic acrylic topcoat is required for direct exterior exposure. Published data for this exact binder in high-solids primers is limited, but the weathering limitation is characteristic of aromatic polyester polyol films.
Pour-in-place appliance insulation uses Avicor 7305 as a component of the polyol blend, typically at 30–60 wt%, to raise the glass-transition temperature and reduce the polyurethane foam thermal conductivity under freezer storage conditions. The B-side is injected at 18–22 °C into a refrigerator cabinet preheated to 35–45 °C, and the foam rises against the liner and outer shell to a core density of 32–38 kg/m³ under ASTM D1622. Compressive strength required for drawer-loading is 120–160 kPa at 10% deformation under ASTM D1621. Thermal conductivity after 24 h at a mean temperature of 10 °C is 0.019–0.022 W/(m·K) under ASTM C518 or ISO 8301. Flow beyond 80 cm in a heated Brett mold is required before gelation; typical gel times at 35 °C are 45–60 s. Shelf-life moisture pickup in the B-side is limited to water <0.10% under ASTM D4672 to avoid liner blistering. Batch-to-batch variance in hydroxyl number greater than ±5 mg KOH/g changes the isocyanate demand enough to alter core density by more than 3 kg/m³, which is a critical threshold on production lines running a fixed polyol-to-isocyanate metering ratio.
Heated tank melters running at 110–130 °C process reactive polyurethane hot-melt adhesives containing Avicor 7305 as the soft segment, where melt viscosity is 15,000–30,000 mPa·s under ISO 3219. The molten adhesive is applied at 100–200 g/m² through slot dies onto ABS/polycarbonate or wood substrates, and cure proceeds by moisture uptake at 25 °C/50% RH. Handling strength is reached in 3–5 d, and full cure is confirmed by FTIR-ATR when the NCO absorbance at 2,270 cm−1 drops below detection after 7 d. T-peel strength on ABS/polycarbonate after 7 d is 6–10 N/mm under ISO 11339. In melter stability studies, viscosity rises by 20–30% over 8 h at 120 °C, and gelation occurs beyond 12 h unless the unit is nitrogen-blanketed and moisture ingress is below 100 ppm. This narrow purge-stability window is the main operational boundary: production lines using drum melters must schedule a complete purge every 8 h, and batch-to-batch variation in polyester acid number above 1.5 mg KOH/g accelerates the viscosity rise still further.
Discontinuous moulded rigid foam blocks are produced by mixing Avicor 7305 with polymeric MDI at an index of 180–220, filling a block mould at 25 °C, and demoulding after 20–30 min; this operation is well-established and requires no further elaboration.
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Avicor 7305 is a self-crosslinking styrene-acrylic copolymer dispersion developed for high-gloss one-component industrial wood coatings. The product is supplied as a milky white anionic dispersion with a solids content of 49–51% by mass, a pH of 7.5–8.5 at 25°C, and a Brookfield RVT viscosity of 200–800 mPa·s when measured at 20 rpm with spindle 3 according to ISO 2555. Minimum film formation temperature is 18°C under ISO 2115, permitting coalescent demand below 3 wt% on binder solids in clear topcoats. The dispersion is APEO-free and formaldehyde-free under the manufacturer’s specification, and residual free monomer content is below 500 ppm by gas chromatographic headspace analysis. The representative specification envelope below is compiled from published technical datasheet values and production quality-control records; it is not a batch release limit.
| Property | Method | Value |
|---|---|---|
| Solids content | ISO 3251, 2 h at 105°C | 49–51% |
| pH | ISO 976 | 7.5–8.5 |
| Viscosity | ISO 2555, Brookfield RVT, spindle 3, 20 rpm, 25°C | 200–800 mPa·s |
| Minimum film formation temperature | ISO 2115 | 18°C |
| Density at 20°C | ISO 2811-1 | 1.02–1.04 g/cm³ |
| Mean particle size | ISO 22412 dynamic light scattering | 80–120 nm |
| Residual free monomer | GC headspace | <500 ppm |
| VOC content | ISO 11890-2 | <1 g/L |
In high-gloss clear topcoats, the dispersion approaches a two-component-like hardness profile without isocyanate addition. At 1.5–2.5 wt% coalescent on binder solids, 60° gloss values above 90 GU are obtained under ISO 2813 at 23±2°C and 50±5% relative humidity. Film formation is sufficiently rapid that surface drying under ISO 9117 is typically reached within 20–30 min at ambient conditions and within 5–10 min under forced air at 35–40°C. At relative humidity above 70%, pre-drying with 30–40°C air for 5–10 min is required because retarded water evaporation increases surfactant concentration at the film surface and can reduce intercoat adhesion. Batch-to-batch viscosity variability in production records is generally ±50 mPa·s, which is narrow enough for fixed spray nozzles without daily viscosity reconditioning.
The dispersion is suited to clear and pigmented topcoats for furniture, joinery, kitchen cabinetry, interior doors, and engineered wood panels. In pigmented systems, titanium dioxide loadings up to 20 PVC do not suppress early crosslink development provided dispersant demand is matched to pigment surface area. Wetting and dispersing additives based on high-molecular-weight acrylic copolymers are preferred; low-molecular-weight polyacrylic acid salts can increase water sensitivity in clear basecoats. In high-humidity coating lines, the product requires a siloxane or mineral-oil defoamer at 0.1–0.3 wt% on total formulation to control microfoam generated during high-shear pump circulation.
Conventional one-component styrene-acrylic emulsions typically rely on physical film formation and exhibit face-to-face block resistance ratings below 4–5 under ASTM D4946 conditions until 24 h of cure. Avicor 7305 delivers block resistance of 6–7 after 6 h at 23°C and 50% relative humidity and 8 after 24 h because the self-crosslinking reaction proceeds through ketone-hydrazide coupling at ambient temperature. The crosslink consumes hydrazide groups only after water evaporation, delaying viscosity build during application while increasing coating modulus after film coalescence. Compared with an aliphatic polyurethane dispersion of similar hardness, the product shows lower cost-in-use and lower co-solvent demand, but lower abrasion resistance and lower resistance to aggressive solvents such as methyl ethyl ketone. The comparative table below is based on laboratory drawdowns at 150 µm wet film thickness on glass and conditioned substrates.
| Parameter | Method | Avicor 7305 | Conventional 1K acrylic | Aliphatic PUD |
|---|---|---|---|---|
| Solids content | ISO 3251 | 49–51% | 45–47% | 35–40% |
| Coalescent demand for 60° gloss above 90 GU | ISO 2813 | 1.5–2.5 wt% | 4–6 wt% | 3–5 wt% |
| Block resistance after 24 h | ASTM D4946 | 8 | 3–5 | 7–9 |
| Resistance to 10% ethanol, 1 h | DIN 68861-1 | 4–5 | 2–3 | 4–5 |
| König pendulum hardness after 7 days | ISO 1522 | 78 s | 45 s | 95 s |
| Abrasion loss, Taber CS-10, 1 kg, 500 cycles | ASTM D4060 | 25 mg | 55 mg | 12 mg |
| Dispersion VOC | ISO 11890-2 | <1 g/L | <1 g/L | <1 g/L |
Resistance to cold liquids under DIN 68861-1 after 24 h contact with water, coffee, tea, and 10% acetic acid is at least rating 4 on clear oak topcoats. Exposure to 48% ethanol for 1 h may produce a rating of 3–4 depending on film thickness and crosslink density. Dry-heat resistance under DIN 68861-1 at 80°C for 20 min maintains gloss without visible whitening; wet-heat exposure at 55°C for 6 h is marginal on high-tannin substrates unless a phenolic-tannin blocking primer is used. Published data for this specific configuration is limited; the values above represent comparative laboratory data rather than guaranteed field performance.
Chemical resistance, hardness development, and film formation boundaries are all influenced by pH control. The recommended final formulation pH is 8.0–8.8. Adjustment with ammonia or dimethylethanolamine should not exceed pH 9.0, because higher alkalinity destabilizes the dispersion and accelerates hydrazide condensation in the wet state. Zinc ammonia carbonate additives, high-acid zinc-based thickeners, and cationic surfactants are incompatible and produce gelation or grit formation. Storage stability is maintained at 5–40°C; freezing destroys the dispersion irreversibly. Under those conditions, shelf life from the date of manufacture is 6 months in closed original containers.
In air-assisted airless spraying trials with a Graco Merkur ES 30:1 pump, a 0.011 in reversible tip, fluid delivery pressure of 70–90 bar, and atomization air at 1.5 bar, the dispersion at 35 s Ford #4 viscosity exhibits pronounced shear thinning. Low-shear viscosity near 2,000 mPa·s recovers within 3–5 s after cessation of shear, which restricts sag on vertical medium-density fibreboard profiles at 180 µm wet film thickness. Sag resistance under ASTM D4400 is below 4 mils at an 10 mil wet film thickness. High-shear circulation does not reduce block resistance provided fluid temperature remains below 45°C; extended shear above 60°C can pre-react the crosslinker and reduce final chemical resistance. Foam control is mandatory in closed-loop circulation because air-entrained microfoam produces pinholes on fine-grained wood surfaces.
For electrostatically supported flat-line application, the dispersion can be applied by high-rotation disc or reciprocating spray bells at line speeds of 3–6 m/min with flash-off zones maintained at 35–45°C and air velocity between 0.5–1.5 m/s. On vertically hung solid wood doors, sag limits become critical above 160 µm wet film; therefore, two coats at 80–100 µm wet film each are preferred over a single thick coat. Between coats, sanding with P320–P400 abrasive is sufficient because the first coat develops adequate surface hardness within 2 h under forced air at 35°C.
In one-component low-VOC topcoat formulation, the constraint of VOC below 100 g/L under the Decopaint Directive 2004/42/EC limits coalescent choice to high-boiling ester alcohols or glycol ethers. Avicor 7305 accepts 2.0–2.5 wt% ester alcohol on binder solids while retaining film formation under ISO 2115 conditions. The resultant formulation VOC measured by ISO 11890-2 is typically 68 g/L. Early hardness development under 35°C forced drying for 20 min followed by 4 h ambient stacking yields König pendulum damping of 42 s under ISO 1522, sufficient for light assembly. Full crosslink density reaches a plateau after 7 days with pendulum damping of 78 s. If stack load exceeds 0.10 MPa before 8 h, face marking and ink transfer appear on dark tinted systems. In ultraviolet-cured or acid-catalyzed hybrid systems containing cationic photoinitiators, compatibility must be verified by a 24 h gel test because residual anionic surfactant can interact with cationic species.
Surface scratch resistance after 7 days is within 1.5–2.0 N under ISO 1518 on clear maple topcoats. The product is therefore positioned between conventional one-component acrylic emulsions and aliphatic polyurethane dispersions for kitchen cabinet end panels, tabletops, and interior door skins. It should not be specified for laboratory worktops, outdoor furniture, or surfaces exposed to prolonged ethanol or acetone contact without additional crosslinker modification.
