MR-C9120 is a hot-polymerized aromatic C9 resin with a nominal 120°C Ring-and-Ball softening point. It is designed for coatings, printing inks, rubber compounds, EVA hot-melt adhesives, asphalt modification, and specialty binders that need more hardness or heat resistance than a 110°C C9 grade. Its international screening reference is the HIKOTACK® P-120 class.
Typical values
The table contains typical values aligned with public technical data for established 120°C C9 resins. Final commercial limits must be stated in the Milorez TDS or agreed purchase specification and confirmed by the applicable lot COA.
| Property | Typical value | Method / condition |
|---|---|---|
| Softening Point (R&B) | 120°C | ASTM E28 |
| Color (Gardner) | 4-6 typical; ≤8 maximum | 50% in toluene, ASTM D1544 |
| Acid Value | 0.04 mg KOH/g typical; ≤0.1 | ASTM D974 |
| Softening Point Variation | 115-125°C | Normal supply window |
| Melt Viscosity | 750-800 mPa·s | 180°C, ASTM D3236 |
| Appearance | Pale-yellow to amber granules | Visual |
At equal loading, MR-C9120 will normally contribute more body and a higher temperature response than MR-C9110. It will also increase melt viscosity, so processing temperature, pump pressure, coating weight, and wetting should be checked. Compare viscosity only when the temperature and method are the same.
Formulation and application notes
For coatings and inks, evaluate pigment wetting, gloss, film hardness, dry time, solvent release, adhesion, and color retention. Aromatic compatibility can make C9 resin useful with alkyd and hydrocarbon-soluble binders, but every solvent package should be checked for clarity and storage stability.
In rubber, screen tack, green strength, filler dispersion, processing safety, and cured properties. A higher-softening resin may improve warm-temperature cohesion but can reduce low-temperature flexibility if used too heavily.
For EVA hot melts, record blend clarity and viscosity throughout the actual mixing cycle. Test open time, set speed, hot tack, peel, and heat resistance on the intended substrates. Where initial tack falls, consider blending MR-C9120 with a lower-softening C5 or C5/C9 tackifier instead of increasing oil without control.
For asphalt and water-repellent systems, confirm dosage under realistic heating and cooling cycles. Public competitor data is a useful screening reference, not proof of equivalent performance in a proprietary formulation.
Packaging, MOQ, and shipment
MR-C9120 is supplied in 25 kg bags on pallets. Standard MOQ is 1 × 20’ FCL, approximately 18 metric tonnes. Commercial terms are available FOB Xiamen or FOB Qingdao. Milorez can provide a free 1-2 kg laboratory sample; the recipient pays courier freight.
International grade comparison
MR-C9120 sits in the same broad softening-point class as NOVARES TT 120-type and HIKOTACK P-120 C9 resins, but color and viscosity require matched test methods; read the NOVARES C9 equivalent guide.
Request TDS & Sample
Email [email protected] with the incumbent grade, formulation type, target softening point, maximum Gardner color, process temperature, annual demand, and destination port. Request the current TDS and a 1-2 kg side-by-side sample.
Frequently asked questions
Why choose a 120°C C9 resin?
The higher softening point can increase hardness, cohesive strength, and warm-temperature resistance compared with lower-softening aromatic resins, subject to formulation testing.
Which applications are typical for MR-C9120?
MR-C9120 is commonly screened in coatings, printing inks, rubber compounds, EVA hot melts, asphalt modification, and water-resistant binder systems.
Does MR-C9120 match Hikotack P-120 exactly?
No exact identity is claimed. It occupies a comparable 120°C C9 category, but melt viscosity, color, molecular-weight distribution, and end-use performance must be compared in the customer's formulation.
How is MR-C9120 shipped?
Standard packing is 25 kg bags on pallets, with approximately 18 metric tonnes in one 20-foot FCL.