MACRYNAL SM 2516/70BAC

MACRYNAL SM 2516/70BAC is a high-solids hydroxy-functional acrylic resin developed for durable two-component coating systems.
MACRYNAL SM 2516/70BAC's balance of gloss, chemical resistance, mechanical strength, and outdoor stability makes it especially valuable in automotive refinish formulations.
Because it cures with polyisocyanates, MACRYNAL SM 2516/70BAC can form hard, resistant polyurethane networks suitable for demanding industrial and refinish coatings.

Synonyms: MACRYNAL SM 2516/70BAC, MACRYNAL SM 2516/70BAC, Macrynal SM 2516 70BAC, Macrynal SM 2516/70 BAC, MACRYNAL SM 2516, Hydroxy-functional acrylic resin, Hydroxyl-functional acrylic resin, Hydroxy acrylic resin, Acrylic polyol resin, Solventborne acrylic resin, Solvent-based acrylic resin, 2K acrylic resin, Two-component acrylic resin, Polyisocyanate-crosslinkable acrylic resin, High-solids acrylic resin, Automotive refinish acrylic resin

MACRYNAL SM 2516/70BAC is a hydroxy functional acrylic resin crosslinkable with polyisocyanates.
MACRYNAL SM 2516/70BAC is recommended for air-drying and forced drying two-pack medium high solids systems with high gloss.
MACRYNAL SM 2516/70BAC offers excellent mechanical properties, excellent chemical resistance and good outdoor stability for automotive refinishes.

MACRYNAL SM 2516/70BAC is a hydroxy-functional acrylic resin supplied in butyl acetate for two-component polyurethane coating systems.
MACRYNAL SM 2516/70BAC is designed for crosslinking with polyisocyanates and can be used in air-drying or forced-drying medium-high-solids coatings.
MACRYNAL SM 2516/70BAC provides high gloss, excellent mechanical properties, strong chemical resistance, and good outdoor stability, making it especially suitable for automotive refinish coatings.

MACRYNAL SM 2516/70BAC is a hydroxy-functional acrylic resin crosslinkable with polyisocyanates.
MACRYNAL SM 2516/70BAC is suitable for air-drying and forced drying two pack medium high solids systems.

MACRYNAL SM 2516/70BAC offers high gloss, excellent mechanical properties, excellent chemical resistance and good outdoor stability for automotive refinishes.
When crosslinked at room temperature the coatings reach their optimum properties after 10-12 days.

If forced drying is employed, a time of 30 min at 80°C is sufficient for complete curing.
MACRYNAL SM 2516/70BAC can be stored upto 730 days at 25°C.
Varnishes based on MACRYNAL SM 2516/70BAC show higher solids content as compared to MACRYNAL SM 510n.

MACRYNAL SM 2516/70BAC is a hydroxy functional acrylic resin crosslinkable with polyisocyanates.
MACRYNAL SM 2516/70BAC is recommended for air-drying and forced drying two-pack medium high solids systems with high gloss.
MACRYNAL SM 2516/70BAC offers excellent mechanical properties, excellent chemical resistance and good outdoor stability for automotive refinishes.

MACRYNAL SM 516/70BAC is a hydroxy-functional acrylic resin suitable for air-drying and forced drying two pack medium high solids systems.
MACRYNAL SM 2516/70BAC is crosslinkable with polyisocyanates.

MACRYNAL SM 2516/70BAC provides high gloss, excellent mechanical properties, excellent chemical resistance and good outdoor stability.
MACRYNAL SM 2516/70BAC is designed for high quality automotive refinishes.
MACRYNAL SM 516/70BAC can be stored at 30°C for 730 days.

Applications of MACRYNAL SM 2516/70BAC:
MACRYNAL SM 2516/70BAC is used in two-component polyurethane coating systems where the acrylic resin is crosslinked with aliphatic polyisocyanates.
MACRYNAL SM 2516/70BAC is recommended for air-drying and forced-drying medium-high-solids coating systems with high gloss.

MACRYNAL SM 2516/70BAC is mainly applied in automotive refinish coatings, especially clearcoats and topcoats that require strong gloss, outdoor durability, chemical resistance, and mechanical performance.
MACRYNAL SM 2516/70BAC can also be used in solventborne industrial coating formulations where good pigment wetting, compatibility, improved appearance, and resistance properties are needed.
MACRYNAL SM 2516/70BAC's high-solids character makes it useful for coating systems designed to reduce solvent content while maintaining film hardness, gloss, and protective performance.

Stability and Reactivity of MACRYNAL SM 2516/70BAC:

Chemical stability:
MACRYNAL SM 2516/70BAC is stable under normal recommended handling and storage conditions.

Reactivity:
MACRYNAL SM 2516/70BAC is a hydroxy-functional acrylic resin and can react with polyisocyanates during two-component polyurethane coating curing.

MACRYNAL SM 2516/70BAC should be mixed only under controlled formulation conditions.

Conditions to avoid:
Heat, sparks, open flames, hot surfaces, direct sunlight, poor ventilation, and static discharge should be avoided.

Incompatible materials:
Strong oxidizing agents, strong acids, strong bases, amines, highly reactive chemicals, and uncontrolled isocyanate contact should be avoided.

Hazardous decomposition products:
Thermal decomposition or fire may produce carbon oxides, irritating smoke, and flammable solvent vapors.

Handling and Storage of MACRYNAL SM 2516/70BAC:

Handling:
MACRYNAL SM 2516/70BAC should be handled using good industrial hygiene and solvent-safe working practices.

Safe handling:
Avoid breathing vapors, mist, or spray, and avoid contact with skin, eyes, and clothing.

Ventilation:
Use adequate general ventilation and local exhaust ventilation in mixing, transfer, and coating application areas.

Fire protection:
Keep away from ignition sources.

Ground and bond containers, use explosion-proof equipment, and prevent static discharge.

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

Storage protection:
Protect from heat, direct sunlight, moisture, sparks, flames, and incompatible materials.

First Aid Measures of MACRYNAL SM 2516/70BAC:

Inhalation:
Move the person to fresh air and keep them comfortable for breathing.

Get medical attention if symptoms such as dizziness, headache, irritation, or breathing difficulty occur.

Skin contact:
Remove contaminated clothing and wash the affected skin with plenty of water and soap.

Get medical advice if irritation, redness, dryness, or sensitization develops.

Eye contact:
Rinse cautiously with water for several minutes.

Remove contact lenses if present and easy to do.

Continue rinsing and get medical attention if irritation persists.

Ingestion:
Rinse mouth with water.

Do not induce vomiting unless directed by medical personnel.

Get medical advice if discomfort occurs.

Most important symptoms:
Vapor exposure may cause dizziness, drowsiness, headache, or respiratory irritation.

Repeated skin contact may cause dryness or cracking due to the solvent content.

Firefighting Measures of MACRYNAL SM 2516/70BAC:

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

Unsuitable extinguishing media:
Do not use a direct high-pressure water jet because MACRYNAL SM 2516/70BAC may spread the burning liquid.

Specific fire hazards:
MACRYNAL SM 2516/70BAC contains butyl acetate as solvent, so vapors may form flammable mixtures with air.

Butyl acetate is classified as a flammable liquid and vapor hazard and may cause drowsiness or dizziness.

Hazardous combustion products:
Fire may produce carbon monoxide, carbon dioxide, dense smoke, irritating vapors, and decomposition products from the resin matrix.

Firefighting protection:
Firefighters should wear self-contained breathing apparatus and full protective clothing.

Accidental Release Measures of MACRYNAL SM 2516/70BAC:

Personal precautions:
Evacuate unnecessary personnel and avoid breathing vapors, mist, or spray.

Protective equipment:
Wear chemical-resistant gloves, safety goggles or face protection, protective clothing, and suitable respiratory protection if ventilation is inadequate.

Emergency procedures:
Remove all ignition sources and ensure adequate ventilation.

Use non-sparking tools and prevent static discharge.

Environmental precautions:
Prevent release into drains, soil, surface water, and groundwater.

Containment and cleaning:
Contain the spill with inert absorbent material such as sand, earth, or vermiculite.

Collect into suitable labeled containers for disposal according to local regulations.

Exposure Controls / Personal Protection of MACRYNAL SM 2516/70BAC:

Engineering controls:
Use local exhaust ventilation and general ventilation to keep vapor levels below occupational exposure limits.

Respiratory protection:
Use an organic vapor respirator if ventilation is insufficient or if vapor/mist exposure may occur.

Hand protection:
Wear chemical-resistant gloves suitable for solvents, such as nitrile rubber gloves.

Eye protection:
Wear safety goggles or face protection during handling, mixing, or spray application.

Skin and body protection:
Wear solvent-resistant protective clothing and closed work shoes.

Hygiene measures:
Do not eat, drink, or smoke while handling the product.

Wash hands and exposed skin after use and remove contaminated clothing before reuse.

Environmental exposure controls:
Avoid uncontrolled release to the environment and collect solvent-containing waste properly.

Properties of MACRYNAL SM 2516/70BAC:
Appearance: Liquid resin solution
Resin type: Hydroxy-functional acrylic resin
Solvent: Butyl acetate
Non-volatile content: Approximately 70%
OH content on solids: Approximately 4.5%
Hydroxyl equivalent weight as supplied: Approximately 535
Viscosity at 23°C: Approximately 9.0 Pa·s
Acid value as supplied: Approximately 5.2 mg KOH/g
Color: Maximum 70 Hazen
Density: Approximately 1.05 g/cm³