CYMEL 327

CYMEL 327 is a highly reactive methylated melamine crosslinker designed to improve cure speed, hardness, gloss, and chemical resistance in coating systems.
CYMEL 327 works effectively with acrylic, alkyd, polyester, and epoxy resins, making it suitable for high-solids, waterborne, coil, metal, automotive, and industrial coating applications.
CYMEL 327's high-imino structure helps create durable baked films with strong performance while supporting lower VOC and low-formaldehyde coating formulations.

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CYMEL 327 is a methylated high imino melamine crosslinker supplied in iso-butanol.
CYMEL 327 is very reactive and has a tendency towards self-condensation at normal baking temperatures, providing films with very good hardness, gloss, chemical resistance and outdoor durability.

CYMEL 327's major advantage relative to other high imino resins is its potential to lower VOCs in high solids formulations.
CYMEL 327 is a methylated high-imino melamine crosslinker supplied in iso-butanol.

CYMEL 327 is a highly reactive amino resin used in coating formulations to provide strong crosslinking during baking, giving the final film very good hardness, gloss, chemical resistance, and outdoor durability.
CYMEL 327 is especially useful in high-solids coating systems because it can help reduce VOC levels compared with some other high-imino melamine resins.

CYMEL 327 is a methylated, high imino melamine crosslinker supplied in iso-butanol.
CYMEL 327 is very reactive and has a tendency towards self-condensation at normal baking temperatures, providing films with very good hardness, gloss, chemical resistance and outdoor durability.

CYMEL 327's major advantage relative to other high imino resins is its potential to lower VOCs in high solids formulations.
CYMEL 327 exhibits fast cure response and low formaldehyde release.

CYMEL 327 shows good compatibility with acrylic-, epoxy- and polyester resins.
CYMEL 327 is suitable for water-borne-, coil- & automotive coatings and metal decorating.

CYMEL 327 has a shelf life of 720 days.
CYMEL 327 serves as a crosslinking agent categorized under CASE Ingredients' monomers and intermediates and chain extenders and crosslinkers.

Designed for the automotive and transportation and paints and coatings sectors, CYMEL 327's tailored for automotive OEM coatings and coatings and finishes applications.
CYMEL 327 is compatible with acrylics, alkyds, epoxies (EP), and polyesters, specifically for waterborne coatings on metal surfaces.

Applications of CYMEL 327:
CYMEL 327 is used as a highly reactive melamine crosslinker in high-solids, waterborne, coil coating, metal decorating, automotive, automotive OEM, industrial metal, and pre-coated metal coating systems.
CYMEL 327 is effective with backbone polymers containing hydroxyl, carboxyl, or amide functional groups, especially acrylic, alkyd, polyester, and epoxy resins.
CYMEL 327 helps produce baked coating films with fast cure response, high hardness, good gloss, chemical resistance, outdoor durability, low formaldehyde release, and lower VOC potential in high-solids formulations.

Application Areas:
High solids coatings
Waterborne coatings
Coil coatings and metal decorating
Automotive coatings

Benefits of CYMEL 327:
High solids
Fast cure response
Low formaldehyde release

Backbone Polymer Selection:
CYMEL 327 is an effective crosslinker for backbone polymer resins containing hydroxyl, carboxyl, and amide functional groups, such as those found on alkyd, polyester or acrylic resins.
Although the optimum level of CYMEL 327 should be determined experimentally, ratios of 25 to 35% based on resin solids are typically most effective.

Catalysis:
CYMEL 327 resin may not require the addition of an acid catalyst to the formulation to obtain effective cure.
In many instances, the acidity of the backbone polymer in the formulation is sufficient to catalyze the reaction under normal baking conditions (15-20 minutes at 120-150°C).
If catalyst addition is required, then 0.5-1.0% of CYCAT® 296-9 catalyst based on total resin solids is recommended.

Formulation Stability:
The stability of solvent-borne systems containing CYMEL 327 can be enhanced by the addition of primary alcohols, amines, or a combination of these.
Low molecular weight primary alcohols such as ethanol and n-butanol aremost effective.

Recommended amines are TEA, DMEA or 2-AMP at a concentration of 0.5-1.0% on total binder solids.
For best stability in waterborne systems, a pH between 7.5-8.5 should be maintained using tertiary amines only.

Stability and Reactivity of CYMEL 327:

Chemical stability:
CYMEL 327 is stable under normal recommended handling and storage conditions.

Reactivity:
No specific hazardous reactivity is reported under normal use conditions.

Possibility of hazardous reactions:
Hazardous polymerization is not expected to occur.

Conditions to avoid:
Heat, sparks, open flames, hot surfaces, static discharge, and ignition sources should be avoided.

Incompatible materials:
Strong oxidizing agents and strong nitrating agents should be avoided.

Hazardous decomposition products:
Thermal decomposition or fire may produce ammonia, carbon monoxide, carbon dioxide, formaldehyde, methanol, nitrogen oxides, and isobutanol vapors.

Handling and Storage of CYMEL 327:

Handling:
CYMEL 327 should be handled using good industrial hygiene and safety practices.

Safe handling:
Keep away from heat, sparks, open flames, and smoking areas.

Fire protection:
Ground and bond containers and receiving equipment, use explosion-proof equipment, and use only non-sparking tools.

Ventilation:
Provide good workplace ventilation and local exhaust ventilation where necessary.

Storage:
Store in a cool, well-ventilated area with the container tightly closed.

Storage temperature:
Store at 4.4–32.2 °C for quality protection.

Storage protection:
Keep away from ignition sources and follow fire-safe storage practices.

First Aid Measures of CYMEL 327:

Inhalation:
Move the affected person to fresh air.

If breathing is difficult, oxygen may be given by trained personnel.

Skin contact:
Wash immediately with plenty of water and soap.

Remove contaminated clothing.

Eye contact:
Rinse immediately with plenty of water for at least 15 minutes and obtain medical attention immediately.

Ingestion:
If swallowed, call a physician immediately.

Do not induce vomiting unless instructed by a physician.

Never give anything by mouth to an unconscious person.

Medical attention:
Obtain medical advice if symptoms such as irritation, breathing difficulty, dizziness, or discomfort persist.

Firefighting Measures of CYMEL 327:

Suitable extinguishing media:
Use water spray, alcohol-resistant foam, carbon dioxide, or dry chemical extinguishing media.

Unsuitable extinguishing media:
Do not use a full water jet.

Specific hazards:
CYMEL 327 is classified as a flammable resin solution, and containers exposed to fire should be cooled with water spray.

Protective equipment:
Firefighters should wear full protective clothing and self-contained breathing apparatus.

Firefighting precautions:
Keep containers cool, control vapors, and prevent contaminated firefighting water from entering drains or waterways.

Accidental Release Measures of CYMEL 327:

Personal precautions:
Remove all ignition sources and ventilate the spill area.

Protective equipment:
Wear suitable protective clothing, impermeable boots, gloves, and eye or face protection.

Respiratory protection:
Use an approved respirator suitable for the exposure level; if exposure is unknown, use a positive-pressure self-contained respirator.

Cleaning method:
Cover the spill with inert absorbent material, sweep it up, and place it into a suitable waste-disposal container.

Final cleaning:
Flush the spill area with water after collection if appropriate.

Disposal:
Dispose of collected material according to local, regional, national, and international regulations.

Exposure Controls / Personal Protection of CYMEL 327:

Engineering controls:
Use a closed process where possible; otherwise provide good enclosure and local exhaust ventilation to control exposure.

Respiratory protection:
Use an approved respirator when inhalation exposure may occur; a full-face mask with an organic vapor Type A filter may be suitable.

Eye protection:
Wear chemical splash-proof goggles or a face shield, and keep an eyewash fountain and safety shower nearby.

Skin protection:
Wear impermeable protective clothing and avoid skin or clothing contamination.

Hand protection:
Nitrile rubber gloves are recommended for both prolonged exposure and short-term splash protection.

Hygiene measures:
Do not eat, drink, smoke, or store food in work areas.

Wash hands and face thoroughly after handling and before breaks.

Identifiers of CYMEL 327:
Product Type: Amino resin crosslinker
Chemical Family: Methylated high-imino melamine resin
Solvent / Carrier: Iso-butanol

INCI/Chemical Name: methylated high imino melamine
SKU: BP119070

Properties of CYMEL 327:
Appearance: Clear Liquid
Non-volatile by wt.: 90% ± 2%
Viscosity, 23°C: 5100-16000 mPa-s
Free formaldehyde: < 0.8 %
Color, APHA: < 70 

Physical form: Clear liquid.
Product type: Methylated high-imino melamine crosslinker.
Solvent / carrier: Iso-butanol.
Non-volatile content: 90% ± 2% by weight.
Viscosity: 5100–16000 mPa·s at 23 °C.
Free formaldehyde: < 0.8%.
Color: < 70 APHA.