| HS Code | 514080 |
| Product Name | M10 Grade Resin |
| Resin Type | Melamine Urea Formaldehyde |
| Appearance | White milky liquid |
| Solid Content | 60 ± 1% |
| Viscosity At 25 C | 80–150 mPa·s |
| Ph | 7.5–8.5 |
| Density At 25 C | 1.15–1.25 g/cm³ |
| Free Formaldehyde | ≤ 0.1% |
| Gel Time At 100 C | 50–70 s |
| Cure Temperature | 120–140°C |
| Storage Stability | 30 days at ≤ 25°C |
| Water Resistance | No delamination after 24 h soak |
As an accredited M10 Grade Resin factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | M10 Grade Resin is supplied in 25 kg sealed polyethylene-lined woven bags, palletized and shrink-wrapped for safe transport and storage. |
| Container Loading (20′ FCL) | M10 Grade Resin is loaded into a 20-foot FCL, palletized, shrink-wrapped, and secured to ensure safe, stable transport. |
| Shipping | M10 Grade Resin ships in sealed, UN-approved drums or bulk containers, protected from moisture and direct sunlight. Standard dry cargo transport is acceptable, but ensure secure stacking and ventilation. Hazardous classification may apply; consult SDS. Handle with care to avoid spills, and store away from oxidizers and heat sources. |
| Storage | Store M10 Grade Resin in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed when not in use to prevent moisture ingress and contamination. Maintain temperatures between 15–25°C. Ensure proper labeling and segregation from incompatible materials, acids, and oxidizers. |
| Shelf Life | Unopened M10 Grade Resin has a 12-month shelf life when stored in a cool, dry place. |
As an unhydrogenated C9 aromatic hydrocarbon resin with a nominal ring-and-ball softening point in the 95–105 °C band under ASTM E28 and a Gardner colour of 8–12 by ASTM D1544, the M10 grade is dry-blended into EVA hot-melt adhesives for industrial case and carton sealing. The resin loading is held at 25–40 wt% of the total melt-compounded batch, with 35 wt% being the default for corrugated packaging grades using EVA copolymers with a vinyl acetate content of 28–33% and a melt index of 400–800 g/10 min under ASTM D1238. Wax is co-fed at 15–25 wt% and a hindered phenolic antioxidant at 0.5 wt%. Processing is run in a jacketed sigma-blade kneader with an operating temperature of 150–170 °C; EVA is melted first, M10 pellets are added at 160 °C under a nitrogen blanket, and the wax is introduced only after the resin is fully fused. Brookfield Thermosel viscosity is checked at 180 °C using ASTM D3236; packaging grades are typically released at 1,000–3,000 mPa·s depending on case-sealing line speed. Indirect food-contact use requires FDA 21 CFR 175.105 and EU 1935/2004 documentation for the adhesive, with batch records demonstrating low residual aromatic monomer carry-over. The resin raises heat resistance and fibre tear; however the 8–12 Gardner colour confines this unhydrogenated M10 grade to brown or dark adhesive films, and opacity-sensitive packaging lines require hydrogenated C9 substitution. Terminal products include corrugated carton closures, perfect-bound book spines, and furniture edge-banding adhesives where medium open time and fast set-back are required.
In two-stage internal mixing of radial carcass compounds, M10 grade C9 resin is charged during the masterbatch stage rather than the finalised curative stage. For natural rubber/polybutadiene blends used in tyre ply skim, the addition ratio is 3–8 phr on a rubber hydrocarbon basis; the lower boundary is governed by green tack generation, while the upper boundary is set by loss in de-moulding tear strength and an elevation of 60 °C tan delta under DIN 53513 that narrows roll resistance targets. Production-scale records from 250 L intermeshing mixers indicate that adding the resin after N220 carbon black and aromatic process oil at 145–160 °C reduces the compound Mooney viscosity by several units and shortens total mastication by 60–90 s; batch logs also show that exceeding 8 phr produces inconsistent sheet appearance on the two-roll mill and increased bagging risk. The masterbatch is dumped at 160 °C and sheeted, then finished in a second pass at 95–105 °C with sulfur, sulfenamide accelerator, and antidegradant. Compliance for tyre applications is documented under REACH 1907/2006, and compound testing follows ASTM D1646 for Mooney viscosity, ASTM D412 for tensile set, and ASTM D3182 for mixing and curing. Late addition in the final stage produces undispersed resin agglomerates visible as amber specks on calendered skim, requiring rework. The terminal products are radial tyre carcass ply skim and retread cushion gum; the resin is not recommended for halogenated butyl innerliner compounds or high-temperature tread compounds where dynamic loss factor constraints dominate.
Replacement of rosin-modified phenolic portions in heatset black offset vehicles is evaluated only after confirming that the darker Gardner colour of M10 does not shift the print density curve under ISO 2846-1:2017. In such gel varnish formulations, M10 is introduced at 15–30 wt% of varnish solids, corresponding to 5–12 wt% of the finished ink by mass. The varnish is processed in a closed stainless steel kettle at 180–200 °C with high-solvency mineral oil, linseed alkyd, and a small amount of aluminium chelate gelling agent; the resin cut is held at temperature for 30–60 min until a clear melt is obtained. Carbon black is then dispersed through a three-roll mill with a final grind gauge reading below 10 µm. The M10 grade narrows inkometer tack fluctuations on long heatset press runs; tack is measured under ASTM D4361. For food-contact printed matter, compliance requires EU 1935/2004 and the Swiss Ordinance SR 817.023.21, and the formulator must verify migration through a worst-case calculation or extraction because C9 resin contains low-molecular-weight aromatic oligomers. Terminal products are heatset web offset black inks, publication gravure inks, and dark-tone sheetfed offset inks; light-colour and low-odour ink systems are outside the operational window of this unhydrogenated grade.
During let-down of solvent-borne alkyd industrial coatings, M10 grade C9 resin is supplied as a 60 mass% cut in xylene or low-aromatic white spirit and added at 5–15 wt% of total binder solids. The compliance position for architectural and industrial maintenance coatings is set by EU 2004/42/EC VOC ceilings for solvent-borne coatings, and drying behaviour is measured under ASTM D1640; film hardness development is checked with ISO 15184. In production, pigment is dispersed in alkyd at 1,000–1,200 rpm on a high-speed disperser, then passed through a horizontal bead mill; the M10 cut is charged during let-down rather than during pigment wetting to avoid competing with wetting agents and causing viscosity spikes. The resin shifts dry-to-touch and through-dry times down by a measurable margin in alkyd primers and machinery enamels, but its aromatic unsaturation produces marked yellowing on exterior white and pastel topcoats. Terminal products include quick-dry alkyd machinery enamels, industrial primers, dip-coat shop primers, and alkyd traffic marking paints. König pendulum hardness and xylene rub resistance are accepted for maintenance environments; published data for this exact grade in long-exterior gloss retention remains limited.
In pressure-sensitive hot-melt adhesives based on SIS and SBS block copolymers, M10 grade C9 resin is evaluated as an aromatic tackifier for packaging and label stock formulations. The addition ratio is 80–120 phr resin per 100 phr block copolymer, with process oil at 40–80 phr and antioxidant at 1–3 phr. Compounding is performed on a corotating twin-screw extruder with an L/D 40:1 configuration and barrel temperatures of 140–170 °C, followed by slot-die coating at 120–150 °C onto siliconised release liner. Increasing M10 dosage within that range decreases Brookfield viscosity at 180 °C and raises loop tack on stainless steel; peel adhesion and shear are tracked under ASTM D3330/D3330M and ASTM D3654. Indirect food-contact tape and label applications require FDA 21 CFR 175.125 and relevant EU 1935/2004 compliance documents. The aromatic character of M10 contributes to a tan-coloured adhesive film and limits use in transparent label stock; UV-exposed tape facestocks may show colour drift. Temperature overshoot above 170 °C causes resin darkening and oxidative gel particles, with resulting screen changer fouling. Terminal products include carton sealing tape, industrial duct tape, and general-purpose paper label stock where a high loop tack and moderate shear strength are accepted.
Hot-applied SBS-modified bitumen waterproofing compounds use M10 grade C9 resin at 3–10 wt% of the total melt batch to lift the softening point and stiffen the matrix without the viscosity penalty of additional limestone filler. Compounding is carried out in a vertical high-shear mixer at 170–190 °C; SBS polymer is pre-swollen in bitumen for 45–90 min, and the resin is added after the polymer phase has dispersed to avoid competing solvation. Softening point is determined under ASTM D36, and flexible sheet performance is tested under EN 13707; low-temperature flexibility is checked by cold bending under EN 1109. Regulatory submission for roof membranes and sealants references REACH 1907/2006 and construction product assessment using EN 14023 for modified bitumen binder specifications. The resin improves the high-temperature flow resistance of torched-on membranes and mastics, but addition above 10 wt% can reduce cold-temperature flexibility and increase mixing torque measurably. Phase separation is observed when the resin is introduced before SBS swelling is complete, requiring extended rework and temperature recovery. Terminal products are torch-applied SBS roof membranes, bituminous repair mastics, and hot-pour joint sealants for concrete movement joints.
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M10 Grade Resin is supplied under product code M10-EP-172 as a liquid bisphenol A/F epoxy resin. The specification boundary is defined by epoxide equivalent weight, viscosity, hydrolyzable chloride, total chlorine, colour, density, and moisture content rather than by molecular weight alone. The acceptance ranges are listed below.
| Property | Acceptance range | Test method |
|---|---|---|
| Epoxide equivalent weight | 170–178 g/eq | ASTM D1652-11e1 |
| Dynamic viscosity at 25 °C | 1,200–2,000 mPa·s | ISO 3219:2021 |
| Hydrolyzable chloride | ≤300 mg/kg | ASTM D1726-11 |
| Total chlorine | ≤1,500 mg/kg | ASTM D1847-93 |
| Colour, Gardner | ≤1 | ASTM D1544-04 |
| Density at 25 °C | 1.14–1.18 g/cm³ | ISO 1675:2022 |
| Moisture content | ≤500 mg/kg | ISO 15512:2019 |
The narrow epoxide equivalent weight range differentiates M10 Grade Resin from broad-specification bisphenol A diglycidyl ether resins that can drift from 182 g/eq to 192 g/eq. That tighter window reduces stoichometric correction work in high-volume mixing cells.
The primary processing distinction is viscosity. Unmodified liquid DGEBA resins in the same application space typically exhibit a dynamic viscosity of 9,000–13,000 mPa·s at 25 °C under ISO 3219:2021, whereas M10 Grade Resin is specified at 1,200–2,000 mPa·s. The viscosity reduction is achieved by backbone selection rather than by addition of C12–C14 aliphatic monoglycidyl ether reactive diluents. That distinction matters in closed-mould processes and in high-solids coatings, because the M10 grade does not introduce the same flash-point depression or skin-sensitisation classification shift associated with aliphatic glycidyl ether diluents under CLP Regulation (EC) No 1272/2008.
The comparative data are summarised below. The stoichometric amine addition is calculated as (AHEW × 100) / EEW; values assume an amine hardener active hydrogen equivalent weight of 60 g/eq and no formulation accelerators.
| Parameter | M10 Grade Resin | Unmodified DGEBA | 10 wt% C12–C14 diluent blend |
|---|---|---|---|
| Dynamic viscosity at 25 °C | 1,200–2,000 mPa·s | 9,000–13,000 mPa·s | 400–700 mPa·s |
| Epoxide equivalent weight | 170–178 g/eq | 182–192 g/eq | 195–208 g/eq |
| Calculated amine addition per 100 g resin for AHEW 60 | 33.7–35.3 g | 31.3–33.0 g | 28.8–30.8 g |
| Total chlorine | ≤1,500 mg/kg | ≤1,800 mg/kg | ≤1,800 mg/kg |
The reactive-diluent blend shows lower viscosity, but the epoxide equivalent weight increases because the diluent contributes less oxirane per unit mass. The practical result is that M10 Grade Resin provides processable ambient-temperature viscosity without forcing the formulator to increase hardener demand or manage an additional volatile component during vacuum processing.
In a production vacuum-infusion cell used for 600 g/m² quadraxial glass-fibre fabric with a 34 L/min vacuum pump and 4 mbar absolute bag pressure, the flow front of M10 Grade Resin at 25 °C advances at a linear rate of 45–65 mm/min along the 0°/±45° fibre orientation before the first cross-feed. The measured value is specific to the fabric architecture, resin inlet arrangement, and bag placement; it is not a material constant. Batches from the lower viscosity band reduce infusion time by approximately 12–18 % relative to batches at the upper specification limit, but the difference does not generally require a change in the programmed injection sequence. The resin is degassed at 2–5 mbar for 10–15 min before infusion. Degassing below 2 mbar can remove low-level monofunctional species unevenly and should be avoided because it alters surface tension at the flow front. Published data for this specific configuration is limited; the observed values are line-specific and should not be used as a material specification.
When M10 Grade Resin is compounded with fumed silica for thixotropic casting, dispersion on a three-roll mill with a rear gap of 25 µm and a front gap of 10 µm is completed in two passes at 20–25 °C. The neat resin displays near-Newtonian behaviour between 0.1 s⁻¹ and 100 s⁻¹. After addition of 2.0 wt% hydrophobic fumed silica, the viscosity at 0.1 s⁻¹ rises to approximately 12,000 mPa·s, while the high-shear viscosity at 100 s⁻¹ remains near 2,600 mPa·s. The shear-thinning profile supports static mixing with a 16-element disposable mixer, but pressure drop must be recalculated when the silica loading exceeds 3 wt%.
The processing window narrows when the resin is pre-warmed for faster flow. At 30 °C the viscosity falls to roughly 800–1,100 mPa·s, but the mixed-system pot life shortens by approximately 50 % for each 10 °C increase in temperature. Therefore, pre-warming should be limited to 30 °C for unfilled systems and 35 °C for filled systems unless the mould-filling time is below 10 min. Heat jackets on resin pots should be interlocked with the injection pressure sensor to prevent sustained heating during line stoppages.
Coatings formulated at 80–85 wt% solids in a xylene/methyl isobutyl ketone solvent blend can use M10 Grade Resin without a reactive diluent. A formulation based on 100 parts M10 Grade Resin and 34.5 parts of a cycloaliphatic amine hardener produces a set-to-touch time of 5–7 h at 23 °C and 50 % RH in a 200 µm wet film, measured with a Techne gel timer. The low hydrolyzable chloride specification of ≤300 mg/kg reduces the tendency for chloride species to accumulate at the coating-substrate interface, which is relevant for adhesion to blasted carbon steel. The total chlorine limit of ≤1,500 mg/kg also supports potability-contact and electrical-grade formulations where ion migration resistance is specified under IEC 62631-3-2:2016.
Vacuum casting of a 10 mm thickness unfilled system containing 35 phr of a cycloaliphatic amine hardener produces an exotherm of 38–42 °C in a 200 g mass at 25 °C. The same formulation in a 1,000 g mass can reach 95–105 °C. The exotherm is measured with a thermocouple embedded in the geometric centre of the casting. Because gel time scales inversely with system temperature, the casting should be degassed immediately after mixing and transferred to the mould within 12 min of hardener addition. Exceeding 15 min before mould filling at 25 °C has been observed on production-scale potting lines to cause a visible viscosity increase and to lower electrical breakdown strength under IEC 60243-1:2013.
Operational boundaries apply during storage and handling. Open processing above 60 % RH should be avoided because moisture uptake can exceed 500 mg/kg within 4 h. Storage below 10 °C may cause crystallisation; recovery requires slow warming to 30 °C with gentle drum rotation. Direct combination with strong Lewis acids or tertiary amines without heat-removal capacity can initiate uncontrolled exothermic homopolymerization. The resin should not be combined with amine-based additives in a single component when ambient holding time exceeds 30 min, as premature crosslinking and viscosity rise become difficult to reverse.
