| HS Code | 401208 |
| Softening Point Ring And Ball | 90 °C |
| Color Gardner | 1 |
| Acid Value | <1 mg KOH/g |
| Iodine Value | 160 g I2/100g |
| Density At 20c | 1.05 g/cm³ |
| Flash Point | >200 °C |
| Melt Viscosity | 500 mPa·s at 180 °C |
| Number Average Molecular Weight | 800 |
| Glass Transition Temperature | 55 °C |
| Refractive Index | 1.583 |
As an accredited NOVARES TM90 Pure Monomer Resin for Paints & Rubber factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | NOVARES TM90 Pure Monomer Resin is supplied as pastilles in 25 kg net paper bags with PE liner, palletized. |
| Container Loading (20′ FCL) | 20' FCL: shrink-wrapped pallets, securely blocked/braced, dry container, free from moisture, contamination, or odors. |
| Shipping | NOVARES TM90 Pure Monomer Resin ships as solid flakes in 25 kg multi-wall paper bags, packed on pallets and shrink-wrapped. Ensure dry storage below 30°C, away from direct sunlight and ignition sources. Not classified as hazardous, but use protective gloves and eyewear when handling. |
| Storage | Store NOVARES TM90 in its original, tightly sealed container in a cool, dry, well-ventilated area. Protect from direct sunlight, heat, and ignition sources. Avoid moisture and extreme temperatures. Keep away from incompatible materials. Under proper conditions, shelf life is maintained as specified by the manufacturer. Ensure containment to prevent spills. |
| Shelf Life | Store in original container, cool dry place. Shelf life is typically 2 years from manufacture date under proper storage. |
Chlorinated rubber-based anticorrosive systems formulated for offshore wind turbine towers, jetty steelwork, and coastal petrochemical pipe racks use NOVARES TM90 as a low-acid-number aromatic monomer resin to adjust thermoplastic character without introducing ester linkages that can hydrolyze under alkaline cathodic disbondment conditions. In a typical high-build topcoat, the resin is added at 5–15 wt% of total binder solids, which corresponds to 3–8 wt% of the total wet formulation at 35–45% volume solids. The resin is pre-dissolved in a xylene/butyl acetate blend at 60–70°C under low-shear agitation before the letdown stage; high-speed dispersion at 15–20 m/s tip speed followed by bead milling to a Hegman grind of 6–7 is used for the pigment concentrate. Full-scale airless spray application at 180–220 bar fluid pressure and 0.28–0.38 mm nozzle orifice produces wet film thicknesses that cure to 20–40 μm dry film thickness per coat. The relevant compliance framework is ISO 12944-5:2019 and ISO 12944-6:2018 for protective paint systems and C5-M testing, with adhesion verification under ISO 4624:2016 and ASTM D4541-17, condensation resistance under ISO 6270-1:2017, and neutral salt spray under ISO 9227:2017. The terminal products are high-durability topcoats for C4 and C5-M steel structures. The operational boundary is that the resin should not be used as the sole film former; its aromatic monomer structure raises the glass transition of the binder matrix and can reduce low-temperature flexibility at loadings above 15 wt% of binder solids.
On production lines, the most common failure mode is resin flocculation when the letdown solvent contains more than 20% aliphatic hydrocarbon; this appears as a persistent haze after cooling and is not corrected by additional milling. The resin should not be pre-dissolved in alcohols or glycol ethers alone because solubility is limited and precipitation can occur. Batch-to-batch viscosity drift in the pigment concentrate is controlled by maintaining resin solution temperature at 60–70°C during addition. The system is not recommended for applications requiring only ISO 12944-2 C2 performance, where the added resin would introduce unnecessary cost and complicate reformulation without a technical service requirement.
Air-drying alkyd machinery enamels with a non-volatile content of 55–65% benefit from NOVARES TM90 as a co-binder in the 5–10% range of total binder solids, particularly where through-dry speed and early hardness are critical for assembly-line handling. The resin is dissolved in xylene or butyl acetate at 20–25% solids and post-added to the alkyd after pigment dispersion has been completed; the process uses a 15–20 m/s high-speed disperser and a bead mill for final grind, with the resin introduced during letdown to avoid prolonged high-shear exposure. Relevant test methods include ASTM D1640/D1640M-14 for drying, ISO 9117-3:2010 for through-dry, ASTM D4366-16 pendulum damping, ISO 1520:2006 cupping, and ISO 2813:2014 for specular gloss. VOC content is assessed under Directive 2004/42/EC; the applicable subcategory must be confirmed against the final solvent blend. The finished enamel is applied to agricultural machinery chassis components, electrical cabinets, and industrial pump housings by air-assisted airless spray at 30–50 μm dry film thickness. Operational limitations are that alkyd acid numbers above 12 mg KOH/g can cause phase separation, and aliphatic solvent content above 20% of the letdown thinner should be avoided. This established application requires no additional equipment modification.
In high-solids alkyd-melamine stoving enamels for metal office furniture, switchgear, and domestic appliance housings, NOVARES TM90 is added at 3–8 wt% of total binder solids. The resin raises the glass transition of the alkyd network after stoving without increasing melamine formaldehyde demand, thereby reducing the risk of overbaking embrittlement at 140–150°C. The resin is introduced as a 50% solution in butyl glycol acetate or xylene during the letdown stage after the alkyd and butylated melamine formaldehyde resin have been combined; the enamel is applied by electrostatic bell or disk at 30–40 μm dry film thickness and stoved in a forced-air oven for 20–25 min at 140°C or 15 min at 150°C. The relevant performance standards include ISO 2813:2014 for gloss, ASTM D3363-20 pencil hardness, ISO 1519:2011 cylindrical bend, ASTM D5402-19 solvent double rubs, and ISO 2409:2020 cross-cut adhesion. The terminal products are high-hardness topcoats for metal enclosures. A process constraint is that the resin solution must be added at less than 40°C to the melamine-containing letdown; higher temperatures can initiate localized pre-condensation and produce gel particles. The acceptable storage viscosity of the finished enamel is typically 90–120 s Ford cup No. 4 at 25°C. Published data for this specific configuration is limited and should be verified by a design-of-experiment at the target stoving schedule.
In a passenger-car radial tread cap compound based on solution-polymerized styrene-butadiene rubber and high-cis polybutadiene, NOVARES TM90 acts as a high-Tg, low-molecular-weight modifier that raises the dynamic loss factor in the 0–30°C wet-grip frequency-temperature window. The addition ratio is maintained at 3–10 phr, with 5 phr as the reference point on 100 phr rubber hydrocarbon. Two-stage mixing in a 1.6 L tangential internal mixer with a 4:1 ram pressure and 70–80% fill factor is used; the resin is added in the first non-productive stage after the polymer has fluxed and before carbon black reaches full incorporation, at a drop temperature of 150–160°C. The second productive stage adds sulfur, sulfenamide accelerator, and zinc oxide at a drop temperature below 100°C. Tread profile extrusion through a 120 mm pin-barrel cold-feed extruder with a 12:1 L/D ratio is used, followed by vulcanization at 150–170°C in a press or continuous salt bath. The compound is tested under ISO 2322:2023 for SBR batch designation, ASTM D3182-21a for mixing practice, ISO 6502-3:2023 for cure kinetics, ASTM D412-16 for tensile properties, DIN ISO 4649:2021 for abrasion, ISO 4662:2017 for rebound resilience, and ISO 23794:2023 for vulcanizate classification. The terminal product is a radial passenger tire tread cap compound. The main operational boundary is that resin loadings above 12 phr reduce green strength and can increase extrudate tack, causing handling defects on tire-building drums.
| Loading | Observed processing response | Risk boundary |
|---|---|---|
| 0 phr | Baseline Mooney viscosity; lower green tack | Reduced wet grip contribution in high-silica compounds |
| 3–5 phr | Improved filler incorporation; processable on standard two-stage mixers | Minor increase in compound Tg; no special handling required |
| 8–10 phr | Noticeable reduction in compound viscosity; extrudate surface smoothness improves | Green tack may require building-drum release adjustments |
| Above 12 phr | Excessive tack, batch-to-batch viscosity drift | Not recommended for cap compounds without redesigned tackifier package |
In silica-filled tread cap compounds, the resin competes with silane coupling reactions for filler surface adsorption during the first non-productive stage. The recommended addition point is after the silane-silica reaction has been allowed to proceed for 60–90 s at 140–150°C; premature addition can block silanol condensation sites and reduce the Payne effect improvement measured by rubber process analyzer strain sweeps or optical dispersion methods. Production-scale experience shows that extrudate temperature should be held below 120°C during profile extrusion to avoid surface tack and pre-scorch when the resin is used at 10 phr. The resin should not be used as a direct replacement for aromatic process oil in compounds containing high levels of polybutadiene without validation under ISO 34-1:2022, because the cured network may exhibit reduced tear strength at elevated temperature. Published data for this specific configuration is limited and requires compound-specific verification.
EPDM weatherstrip compound development on a 90 mm cold-feed pin-barrel extruder with a 16:1 L/D ratio and vacuum vent demonstrates that NOVARES TM90 reduces die swell and improves collapse resistance in thin-wall sponge profiles when added at 5–10 phr on 100 phr EPDM. The component is mixed in a 270–320 L intermeshing internal mixer with a drop temperature of 120–130°C, followed by a dump extruder and two-roll mill batch-off; the resin is introduced with carbon black and paraffinic oil in the first mixing stage, not as a late-stage additive, to avoid tack defects on the mill. Continuous vulcanization is performed in a hot-air tunnel at 220–240°C for 2–4 min, with line speeds of 10–25 m/min depending on profile cross-section. The applicable specifications include ISO 3302-1:2021 for dimensional tolerances, ASTM D395-18 and ISO 815-1:2019 for compression set, ISO 188:2011 for accelerated aging, and ISO 1431-1:2019 for ozone resistance. Terminal products are EPDM glass run channels, door seals, and hood seals. The limitation is that the aromatic monomer resin reduces low-temperature flexibility of the EPDM matrix at loadings above 10 phr; for specifications requiring −40°C flexibility, the lower end of the loading window or a low-Tg compatible resin should be considered. This scenario is established and requires no extended elaboration.
Nitrile-butadiene roll cover compounds for paper machine press rolls, textile squeezing rolls, and steel coil coating rolls are formulated with NOVARES TM90 at 5–15 phr on 100 phr NBR, primarily to improve hardness control and abrasion resistance without increasing sulfur crosslink density. The compound is mixed in a 75 L tangential internal mixer at 50–70°C initial temperature, with the resin added after the NBR has fluxed and before carbon black and plasticizer are fully incorporated; the mixed batch is then sheeted on an open mill at 40–60°C, applied to a steel core, wrapped with nylon fabric, and vulcanized in an autoclave at 140–150°C for 4–6 h. Final finishing uses cylindrical grinding to a surface roughness of 0.2–0.8 μm Ra. The standards are DIN ISO 4649:2021 for abrasion resistance, ASTM D2240-15 and ISO 48-4:2018 for hardness, ISO 815-1:2019 for compression set, ISO 1431-1:2019 for ozone, and ISO 7619-1:2019 for indentation hardness microtesting. The terminal products are press roll covers and industrial roll covers used in wet-end papermaking. A boundary condition in this application is the extraction resistance of the cured roll cover to hot process water and alkaline paper machine cleaning agents; the aromatic monomer resin should not replace plasticizer in rolls continuously exposed to 70–90°C water because of the risk of surface hardening and gloss development over extended service.
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NOVARES TM 90 Pure Monomer Resin for Paints & Rubber is a pale, hard aromatic resin supplied as flakes or pastilles, synthesised from controlled vinyl aromatic monomer streams rather than mixed cracked naphtha fractions. The numeric suffix 90 designates the nominal mid-range softening point in degrees Celsius. The product is specified by a ring-and-ball softening point in the 85–95 °C band under ASTM E28, a Gardner colour not exceeding 1 under ASTM D1544, an acid number no greater than 0.1 mg KOH/g under ISO 2114, and a density of approximately 1.06 g/cm³ at 20 °C under ISO 1183-1. The molecular architecture is characterised by a narrow molecular weight profile and low residual unsaturation, which places the product in the pure monomer resin class and differentiates it from C9 aromatic and dicyclopentadiene resins. Published exact molecular weight data for this grade are limited; users requiring size-exclusion chromatography values should request the batch-specific certificate of analysis.
The primary difference is feedstock composition. C9 resins are derived from complex streams containing indene, methylstyrenes, and other alkyl aromatics, while DCPD resins contain cyclic olefin structures. NOVARES TM 90 is built from refined aromatic monomers, giving a lower acid number, lighter colour, and a narrower softening point control window. In solvent-borne paints, the resin is readily soluble in toluene, xylene, butyl acetate, and aromatic-ketone blends. Solutions in aliphatic mineral spirits form haze unless an aromatic co-solvent is present; this aromaticity is a formulation boundary not present in many C9 grades with broader aliphatic tolerance.
In rubber, the difference appears most clearly in compatibility with styrene-containing and polar elastomers. A pure monomer resin interacts strongly with SBR, nitrile rubber, and chloroprene, whereas DCPD resins are generally less suitable for high-nitrile polymers. The low acid number under ISO 2114 means that the product does not introduce significant acid-base interactions with fillers or metal oxides, unlike rosin-modified resins. Published comparative data for all possible resin combinations are limited; initial solubility and compatibility screening should follow the supplier’s solvent-tolerance ladder or ASTM D3132 for resin solubility range.
In high-solids alkyd and acrylic industrial enamels, NOVARES TM 90 is incorporated at 5–15 wt% on binder solids. The resin is pre-dissolved in xylene or butyl acetate at 50–60% non-volatile content before introduction to a high-speed disperser. On a production bead mill operating at 12–16 m/s tip speed, this sequence prevents transient viscosity peaks during letdown. König pendulum hardness under ISO 1522 increases when the resin replaces part of the long-oil alkyd plasticiser. High-shear viscosity under ISO 2884-2 remains processable if total resin addition does not exceed 15 wt% on binder solids. Gloss at 20° and 60° under ISO 2813 is retained in white enamels because the Gardner colour of the resin is lower than that of standard C9 grades.
Accelerated weathering under ISO 16474-2 cycle A indicates that films containing NOVARES TM 90 may show earlier gloss loss at additions above 15 wt% on binder solids. This boundary reflects photochemical oxidation of the aromatic ring and is not a general scratch-resistance limit. In two-component polyurethane systems, the resin contains no hydroxyl groups and therefore does not consume the isocyanate crosslinker; however, residual moisture on the flake surface can react with isocyanate, so moisture content should be confirmed below 0.1% by Karl Fischer titration under ISO 15512 before use in moisture-sensitive formulations. For electrostatic spray application, volume resistivity can be measured under ASTM D257; the aromatic resin increases resistivity relative to solventborne systems containing oxygenated co-solvents, and this may require adjustment of high-voltage settings.
In chlorinated rubber and vinyl maintenance coatings, the resin can be used as a co-binder at 5–20 wt% on total resin solids to increase film hardness and recoatability. The resin is typically added as a pre-dissolved solution to avoid solvent shock; final film flexibility can be monitored using cylindrical bend elongation under ISO 1519 and impact resistance under ISO 6272-1. At additions above 20 wt%, flexibility in vinyl systems decreases because the aromatic resin raises the modulus of the vinyl matrix. Blocking resistance after stacking can be evaluated by the peel method in ASTM D4946.
For pigment concentrates processed in a bead mill, the resin’s acid number below 0.1 mg KOH/g reduces the risk of viscosity rise in zinc-oxide or calcium-carbonate slurries. However, the resin is not a wetting and dispersing additive; formulations still require a polymeric dispersant with an amine or carboxylate anchoring group. The low polarity of the aromatic structure can improve the wetting of carbon black in solventborne bases when used at 2–5 wt% on pigment weight, as evaluated by fineness of grind under ISO 1524.
In silica-filled solution-styrene-butadiene rubber tread formulations, NOVARES TM 90 is preferentially added at 3–8 phr during the masterbatch stage of a 1.6 L internal mixer with a fill factor of 0.75 and rotor speed of 60 min⁻¹. The resin lowers compound Mooney viscosity under ISO 289-1 at 100 °C ML(1+4) by 10–20 MU relative to a resin-free control. Shore A hardness after vulcanisation increases by 2–5 points under ISO 48-4; the effect is more pronounced in sulphur-cured SBR than in peroxide-cured EPDM because the aromatic structure interacts with styrene domains through π–π stacking rather than covalent crosslinking. Tensile stress at 300% elongation under ISO 37 is raised at the expense of elongation at break. Additions above 10 phr typically reduce elongation at break by diluting the elastic network. Published rheometer data for this exact formulation are limited; the ranges should be verified on the target production line.
Moving-die rheometer cure profiles under ISO 6502 at 160 °C show no significant accelerator effect. Scorch time ts2 and optimum cure time t90 remain within ±0.3 min of the resin-free control at 5 phr. This behaviour distinguishes the product from phenolic tackifiers, which can shorten scorch time and generate formaldehyde-derived volatiles during cure. In two-roll mill operations, the resin is added only after the base elastomer has formed a tight band; addition during the initial breakdown phase can cause roll sticking and uneven dispersion, particularly in natural rubber with high mastication energy. For injection-moulded rubber parts, the product reduces compound viscosity at processing temperatures of 90–110 °C and can be evaluated with a spiral flow mould under ASTM D3123 to document flow improvement.
In silica-filled compounds, the resin influences filler dispersion but does not replace the silane coupling agent. At 3–8 phr, the aromatic structure improves wetting of silane-treated silica during the second-stage mixing pass, as indicated by a lower Payne effect in dynamic strain sweeps under ISO 18437. At higher loadings, tan δ at 60 °C under ISO 18437 may increase, which is undesirable for tread compounds with low rolling-resistance targets. This property portfolio differs from C9 resin, which can provide similar viscosity reduction at a lower hardness contribution.
Pure monomer resins of this softening-point class are normally processed below 220 °C to limit chromophore formation. Published data for specific thermal decomposition onset of NOVARES TM 90 are limited; however, industrial handling recommendations for similar aromatic resins set the short-term maximum melt temperature at 200–220 °C in closed mixers. Extended residence times above 200 °C can produce a measurable increase in Gardner colour under ASTM D1544 and an increase in volatile content. In locations where storage relative humidity exceeds 60%, surface moisture should be removed by pre-drying at 60–70 °C for 2–4 h using desiccant air before the resin is introduced into hot melt or solventless processing systems. Storage above 40 °C should be avoided to prevent flake blocking and particle agglomeration.
Solvent release from high-solids coatings containing NOVARES TM 90 is controlled by free volume and the glass transition of the drying film. Formulations with 10 wt% resin on binder solids show a slight increase in touch-dry time under ASTM D5895 when compared with hydrocarbon-free controls, while through-dry time under ISO 9117-3 can be shortened because the resin raises the glass transition of the dried film and reduces retained solvent. This behaviour is not universal across all binder classes; in two-component polyurethane formulations, the resin should be evaluated for isocyanate compatibility by measuring viscosity stability at 23 °C over 72 h and film gloss under ISO 2813.
For products sold in the European Economic Area, the supplier’s REACH registration and extended safety data sheet should be consulted for exact classification and exposure scenarios. The resin is not intentionally manufactured with substances of very high concern above 0.1% w/w, but this should be confirmed with the batch-specific certificate of analysis. Direct food-contact use is not assumed; users should verify suitability under 21 CFR 175.105 for adhesives or 21 CFR 175.300 for coatings before using the product in food-contact articles. Compliance with RoHS does not apply to this non-electronic resin, but downstream paint and rubber manufacturers should confirm that the final article meets the applicable end-market directive.
Table values for C9 and DCPD grades represent typical commercial ranges, not universal specification limits; supplier data sheets should be checked for the selected grade.
| Property | NOVARES TM 90 | Typical C9 aromatic resin | Typical DCPD resin |
|---|---|---|---|
| Feedstock basis | Controlled vinyl aromatic monomer stream | Mixed cracked naphtha C9 fraction | Dicyclopentadiene-rich fraction |
| Softening point | 85–95 °C (ASTM E28) | 90–110 °C (ASTM E28) | 90–110 °C (ASTM E28) |
| Gardner colour | ≤1 (ASTM D1544) | 5–8 (ASTM D1544) | 4–6 (ASTM D1544) |
| Acid number | ≤0.1 mg KOH/g (ISO 2114) | 1–3 mg KOH/g (ASTM D974) | 0.5–2 mg KOH/g (ASTM D974) |
| Compatibility | SBR, nitrile, chloroprene, alkyd, acrylic, chlorinated rubber | Natural rubber, EPDM, aliphatic and aromatic solvents | SBR, natural rubber, olefin copolymers; limited nitrile compatibility |
| Main coating effect | Hardness, gloss, recoatability in aromatic-solvent systems | Lower cost, higher colour, tack contribution | Higher odour, limited light stability |
| Main rubber effect | Reinforcing plasticiser for styrenic and polar elastomers | General-purpose tackifier with lower hardness contribution | Tackifier with limited colour stability |
In rubber-to-metal bonding primers based on chlorosulfonated polyethylene or chlorinated rubber, NOVARES TM 90 is used as a resinous modifier at 10–20 phr on polymer content. The aromatic structure improves wetting of zinc-phosphated steel substrates and raises the glass transition of the primer, reducing edge lift during hot-bonding cycles at 150–170 °C under ASTM D429 method B. Because the resin contains no phenolic or carboxylic acid functionality, it does not compete with the metal-binding groups of the adhesive film; this is a key difference from rosin-derived or phenolic tackifier resins, which can migrate to the metal interface and reduce adhesion under hot water immersion tested by ISO 9142 schedule D1. The operational boundary for this application is the same thermal stability limit described for melt processing; primer curing schedules above 220 °C should be avoided unless the adhesion system has been requalified.
