【 WhatsApp】
+86-21-6420 0566
| OEM | OEM Services Provided |
| Feature | Good stability |
| Classification | Paint Additives |
| Advantage | Professional, Fast Delivery, Customizable | Samples | Apply for free，Contact Export Director now ↓ |
Fully Methylated Melamine-Formaldehyde Resin (FMMF): Overview and Key Properties
| Category | Details |
|---|---|
| Chemical Type | Hexamethoxymethylmelamine (HMMM) |
| CAS Number | 3089-11-0 |
| Appearance | Colorless to pale yellow viscous liquid |
| Solubility | Soluble in water, alcohols, and most organic solvents |
Key Characteristics
Chemical Structure & Properties
| Property | Value | Significance |
|---|---|---|
| Methylation Degree | >95% | Ensures complete reactivity |
| Viscosity (25°C) | 300–800 mPa·s | Impacts application flow |
| pH | 8.5–10.5 | Stabilizes resin in storage |
| Reactive Sites | 6 methoxy groups per molecule | High crosslinking density |
Curing Performance
| Parameter | Range | Notes |
|---|---|---|
| Self-Cure Temp. | 150–180°C | Requires strong acid catalyst |
| Co-Cure Temp. | 120–150°C | With hydroxyl/acid functional resins |
| Gel Time | 5–15 min @ 150°C | Catalyst-dependent |
Applications
Primary Uses
| Industry | Application | Key Benefit |
|---|---|---|
| Coatings | Automotive clearcoats | High gloss, chemical resistance |
| Textiles | Wrinkle-resistant finishes | Durable crosslinks |
| Paper | Wet-strength additives | Improves fiber bonding |
| Adhesives | Wood composites | Low formaldehyde emission |
Formulation Guidelines
| Component | Typical % | Purpose |
|---|---|---|
| FMMF Resin | 15–30% | Primary crosslinker |
| Acid Catalyst | 0.5–2% (e.g., p-TSA) | Cure acceleration |
| Co-Resin | 50–70% (e.g., acrylic/polyester) | Flexibility adjustment |
| Additives | 1–5% | Flow/leveling control |
Advantages vs. Alternatives
| Feature | FMMF | Partially Methylated MF | Urea-Formaldehyde |
|---|---|---|---|
| Reactivity | High | Moderate | Low |
| Formaldehyde Emission | Very Low | Moderate | High |
| Water Resistance | Excellent | Good | Fair |
| Cost | $$ | $ | $ |
Safety & Compliance
| Parameter | Status |
|---|---|
| VOC Content | <250 g/L (compliant) |
| Food Contact | FDA 21 CFR 175.300 |
| Storage | 12 months @ 25°C (inert atmosphere) |
Summary
Fully methylated melamine-formaldehyde resins deliver superior crosslinking efficiency with minimal formaldehyde release, making them ideal for high-performance coatings and industrial applications. Their high reactivity requires precise catalyst selection but enables energy-efficient curing processes.
MT-803C is aspecially-designed hexamethoxymethy melamine resin.With its precisely controlled functionality,MT-803C
shows high reactivity to polyfunctional coating resins.lt is recommended for the application in conventional high solids and solvent-borne
coating systems.In comparison with butylated amino crosslinkers, only one-half amount of MT-803C is required to achieve superior physical and chemical properties of cured coatings, which includes fexibility gloss retention,hardness,impact resistance and MEK rub resistance.Among numerous types of methylated amino resins,MT-803C is the most versatile methylated melamine resin.
Appearance Clear, viscous liquid
Color, Gardner 1 maximum
Nonvolatile, weight % > 97%
(1.50g/15mins/150℃)
Viscosity, Gardner-Holdt, 25℃
X~Z3
Free formaldehyde, weight % <0.1%
It has been widely applied in coil coatings, automotive coatings, can coatings, wood coatings and general metal coatings.
MT-803C resin is packaged in steel drums of 240kg net. Under normal storage environment at 30°c maximum,the storage stability of MT803LF
packed in original steel drums could last 24 months after manufactured date.
Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.
For help with solutions customized to your business needs, contact Export Director now.
With 30+ years of experience and We firmly believe that product quality is the basis of cooperation.
Chat Now
TEl
+86-21-6420 0566
