MACRYNAL SM 2516/70BAC

MACRYNAL SM 2516/70BAC is a hydroxy-functional acrylic resin supplied in butyl acetate for two-component polyurethane coating systems, and MACRYNAL SM 2516/70BAC is valued for high gloss, excellent mechanical properties, chemical resistance, and good outdoor stability.
MACRYNAL SM 2516/70BAC is designed for air-drying and forced-drying medium high-solids systems when crosslinked with aliphatic polyisocyanates, and MACRYNAL SM 2516/70BAC is especially suitable for automotive refinish and high-performance industrial coatings.
MACRYNAL SM 2516/70BAC is typically supplied as an approximately 70% non-volatile resin solution in BuAc, and MACRYNAL SM 2516/70BAC performance depends on hydroxyl value, isocyanate ratio, solvent blend, pigment compatibility, drying conditions, and film thickness.

CAS Number: Mixture (hydroxy-functional acrylic resin solution; trade product)
EC Number: Mixture (trade product)
Molecular Formula: Mixture (acrylic polyol resin in butyl acetate; variable)
Molecular Weight: Mixture (polymeric resin; variable)

Synonyms: MACRYNAL SM 2516/70BAC, Macrynal SM 2516/70BAC, MACRYNAL 2516/70BAC, Hydroxy Acrylic Resin SM 2516/70BAC, Hydroxy-Functional Acrylic Resin, Acrylic Polyol Resin, Acrylic Polyol in Butyl Acetate, Solventborne Acrylic Resin, 2K PU Acrylic Resin, Automotive Refinish Acrylic Resin, High Solids Acrylic Resin, Polyisocyanate-Crosslinkable Acrylic Resin, MACRYNAL SM 2516/70BAC, Macrynal SM 2516, Macrynal 2516/70BAC, Macrynal SM 2516 70BAC, MACRYNAL SM 2516/70 BAC, Acrylic Resin SM 2516/70BAC, Hydroxyl Acrylic Resin SM 2516/70BAC, Hydroxy Functional Acrylic Resin SM 2516/70BAC, Polyacrylate Resin SM 2516/70BAC, Acrylic Polyol Resin SM 2516/70BAC, Solventborne Acrylic Resin SM 2516/70BAC, Solvent-Based Acrylic Resin SM 2516/70BAC, BAC Acrylic Resin SM 2516, Butyl Acetate Acrylic Resin SM 2516, Macrynal Acrylic Resin, Macrynal Hydroxyl Acrylic Resin, Macrynal Polyacrylate Resin, Macrynal Acrylic Polyol, Macrynal Solventborne Resin, Macrynal Coating Resin, Macrynal Binder Resin, Macrynal Industrial Coating Resin, Macrynal Automotive Coating Resin, Macrynal Refinish Resin, Macrynal Two-Component Coating Resin, Macrynal 2K Coating Resin, Macrynal Polyurethane Coating Resin, Macrynal Crosslinkable Resin, Macrynal OH Functional Resin, Macrynal Hydroxy Resin, Macrynal Clearcoat Resin, Macrynal Topcoat Resin, Macrynal Enamel Resin, Macrynal Lacquer Resin, Macrynal Paint Resin, Macrynal Protective Coating Resin 

APPLICATIONS

MACRYNAL SM 2516/70BAC is used in two-component polyurethane coatings where hydroxy acrylic resin is crosslinked with aliphatic polyisocyanates.
MACRYNAL SM 2516/70BAC is incorporated into automotive refinish topcoats to provide high gloss, good durability, and strong film appearance.
MACRYNAL SM 2516/70BAC is used in clearcoat and pigmented coating systems where excellent mechanical properties and chemical resistance are required.

MACRYNAL SM 2516/70BAC is used in air-drying coating systems where room-temperature curing and practical handling properties are needed.
MACRYNAL SM 2516/70BAC is incorporated into forced-drying coating systems where faster property development is desired through controlled bake conditions.
MACRYNAL SM 2516/70BAC is used in medium high-solids coating formulations to support reduced solvent content while maintaining workable application viscosity.

MACRYNAL SM 2516/70BAC is used in industrial metal coatings where adhesion, hardness, gloss retention, and chemical resistance are important.
MACRYNAL SM 2516/70BAC is incorporated into machinery, equipment, and transportation coatings in selected applications to improve protective film performance.
MACRYNAL SM 2516/70BAC is used in coatings for metal and properly prepared plastic substrates depending on primer, pretreatment, and formulation design.

MACRYNAL SM 2516/70BAC is used in direct-to-metal and general industrial systems in selected formulations where resin compatibility and corrosion package are optimized.
MACRYNAL SM 2516/70BAC is incorporated into coatings requiring good solvent resistance, petrol resistance, and outdoor exposure performance.
MACRYNAL SM 2516/70BAC is used in high-gloss coating systems where flow, leveling, and color clarity are important.

MACRYNAL SM 2516/70BAC is used with suitable catalysts, solvents, flow additives, UV stabilizers, and pigment packages to tailor coating performance.
MACRYNAL SM 2516/70BAC is incorporated into professional refinish systems where final hardness and chemical resistance develop after full cure.
MACRYNAL SM 2516/70BAC is valued because MACRYNAL SM 2516/70BAC provides a balanced acrylic polyol platform for durable, glossy, chemically resistant two-pack polyurethane coatings.

MACRYNAL SM 2516/70BAC is used as a hydroxyl-functional acrylic resin for coating formulations. MACRYNAL SM 2516/70BAC is used in two-component polyurethane coating systems. MACRYNAL SM 2516/70BAC is applied in industrial metal coatings. MACRYNAL SM 2516/70BAC helps produce durable and chemically resistant coating films.

MACRYNAL SM 2516/70BAC is used in automotive refinish coatings. MACRYNAL SM 2516/70BAC supports high-gloss clearcoat formulations. MACRYNAL SM 2516/70BAC is used in pigmented topcoats. MACRYNAL SM 2516/70BAC helps improve color retention and surface appearance.

MACRYNAL SM 2516/70BAC is used in coatings for machinery and equipment. MACRYNAL SM 2516/70BAC provides strong film hardness after curing. MACRYNAL SM 2516/70BAC is applied in protective coatings for metal substrates. MACRYNAL SM 2516/70BAC helps improve resistance to abrasion and chemicals.

MACRYNAL SM 2516/70BAC is used in coatings for commercial vehicles. MACRYNAL SM 2516/70BAC supports durable finishes for trucks and transport equipment. MACRYNAL SM 2516/70BAC is used in plastic coating applications. MACRYNAL SM 2516/70BAC helps improve adhesion when used with suitable primers and additives.

MACRYNAL SM 2516/70BAC is used in wood coating systems. MACRYNAL SM 2516/70BAC contributes to smooth and glossy wood finishes. MACRYNAL SM 2516/70BAC is used in furniture coatings. MACRYNAL SM 2516/70BAC helps improve scratch resistance and surface protection.

MACRYNAL SM 2516/70BAC is used in polyurethane clearcoats. MACRYNAL SM 2516/70BAC reacts with polyisocyanate hardeners. MACRYNAL SM 2516/70BAC is used to create crosslinked acrylic urethane networks. MACRYNAL SM 2516/70BAC helps improve coating durability after curing.

MACRYNAL SM 2516/70BAC is used in high-solids coating formulations. MACRYNAL SM 2516/70BAC supports lower solvent content in selected coating systems. MACRYNAL SM 2516/70BAC is used in fast-drying industrial coatings. MACRYNAL SM 2516/70BAC helps improve handling and processing efficiency.

MACRYNAL SM 2516/70BAC is used in corrosion-protection coating systems. MACRYNAL SM 2516/70BAC supports protective performance when combined with suitable pigments. MACRYNAL SM 2516/70BAC is applied in coatings for steel components. MACRYNAL SM 2516/70BAC helps maintain long-term film integrity.

MACRYNAL SM 2516/70BAC is used in aluminum coating applications. MACRYNAL SM 2516/70BAC helps produce smooth and uniform finishes on metal surfaces. MACRYNAL SM 2516/70BAC is used in coatings for household appliances. MACRYNAL SM 2516/70BAC supports durable decorative finishes for appliance parts.

MACRYNAL SM 2516/70BAC is used in coatings for tools and hardware. MACRYNAL SM 2516/70BAC improves resistance to wear and handling damage. MACRYNAL SM 2516/70BAC is applied in coatings for electrical equipment housings. MACRYNAL SM 2516/70BAC helps provide protective and aesthetic surface performance.

MACRYNAL SM 2516/70BAC is used in marine and outdoor coating systems under suitable formulation conditions. MACRYNAL SM 2516/70BAC supports weather-resistant coating performance. MACRYNAL SM 2516/70BAC is used in specialty acrylic coating formulations. MACRYNAL SM 2516/70BAC helps balance hardness, flexibility, and gloss.

MACRYNAL SM 2516/70BAC is used in coating development laboratories. MACRYNAL SM 2516/70BAC is applied in formulation testing with various polyisocyanate crosslinkers. MACRYNAL SM 2516/70BAC is used in quality-control coating trials. MACRYNAL SM 2516/70BAC helps evaluate gloss, adhesion, hardness, and chemical resistance.

MACRYNAL SM 2516/70BAC is used in solventborne coating systems. MACRYNAL SM 2516/70BAC supports professional coating applications requiring high film performance.

DESCRIPTION

MACRYNAL SM 2516/70BAC is a hydroxy-functional acrylic resin that reacts with polyisocyanates to form crosslinked polyurethane networks in two-component coating systems.
MACRYNAL SM 2516/70BAC contains hydroxyl groups on the acrylic polymer backbone, and these hydroxyl groups provide reactive sites for isocyanate curing.
MACRYNAL SM 2516/70BAC is supplied in butyl acetate, and the “70BAC” designation indicates an approximately 70% resin solution in a butyl-acetate-based solvent system.

MACRYNAL SM 2516/70BAC offers high gloss, strong mechanical performance, chemical resistance, and good outdoor stability when paired with compatible aliphatic polyisocyanates.
MACRYNAL SM 2516/70BAC reaches final film performance depending on curing schedule, and forced drying can accelerate development of hardness, chemical resistance, and handling strength.
MACRYNAL SM 2516/70BAC requires accurate NCO/OH ratio calculation because under-crosslinking or over-crosslinking can affect flexibility, hardness, adhesion, and chemical resistance.

MACRYNAL SM 2516/70BAC formulation performance depends on solvent balance, pigment wetting, additive selection, catalyst level, application viscosity, and environmental conditions.
MACRYNAL SM 2516/70BAC should be stored in tightly closed containers because solvent loss, moisture contamination, and skin formation can affect viscosity and application behavior.
MACRYNAL SM 2516/70BAC should be used according to supplier recommendations, coating regulations, VOC requirements, and workplace safety standards.

MACRYNAL SM 2516/70BAC is a solventborne acrylic resin. MACRYNAL SM 2516/70BAC is commonly supplied at about 70% solids. MACRYNAL SM 2516/70BAC is supplied in butyl acetate as the main solvent. MACRYNAL SM 2516/70BAC is a hydroxyl-functional resin designed for crosslinking reactions.

MACRYNAL SM 2516/70BAC is typically used with polyisocyanate hardeners. MACRYNAL SM 2516/70BAC forms polyurethane networks after curing. MACRYNAL SM 2516/70BAC provides good film hardness. MACRYNAL SM 2516/70BAC contributes to high gloss and good appearance.

MACRYNAL SM 2516/70BAC offers good chemical resistance in cured coatings. MACRYNAL SM 2516/70BAC helps improve weathering resistance in suitable formulations. MACRYNAL SM 2516/70BAC has good compatibility with many coating additives. MACRYNAL SM 2516/70BAC can be formulated with pigments, fillers, and solvents.

MACRYNAL SM 2516/70BAC is valued for balanced hardness and flexibility. MACRYNAL SM 2516/70BAC provides good adhesion when used in properly designed systems. MACRYNAL SM 2516/70BAC supports durable films on prepared substrates. MACRYNAL SM 2516/70BAC is suitable for high-performance industrial coatings.

MACRYNAL SM 2516/70BAC should be stored in tightly closed containers. MACRYNAL SM 2516/70BAC should be protected from heat, sparks, and open flames. MACRYNAL SM 2516/70BAC should be stored in a cool and well-ventilated area. MACRYNAL SM 2516/70BAC should be handled with suitable protective equipment.

MACRYNAL SM 2516/70BAC contains organic solvent and requires proper ventilation during use. MACRYNAL SM 2516/70BAC may be flammable because of its solvent content. MACRYNAL SM 2516/70BAC should be mixed thoroughly before formulation use. MACRYNAL SM 2516/70BAC performance depends on hardener choice, mixing ratio, curing conditions, and complete formulation design.

MACRYNAL SM 2516/70BAC is an important acrylic polyol resin for durable solventborne coating systems.

PROPERTIES

Common Name: MACRYNAL SM 2516/70BAC
Chemical Type: Hydroxy-functional acrylic resin; acrylic polyol; solventborne 2K polyurethane binder
Appearance: Clear to slightly hazy resin solution
Odor: Solvent-like butyl acetate odor
Solids Content: Approximately 70% non-volatile content
Solvent: Butyl acetate / BuAc-based solvent system
Hydroxyl Content: Approximately 4.5% on solids, typical
Hydroxyl Equivalent Weight: Approximately 535 g/eq, typical
Acid Value: Low, grade dependent
Viscosity: Medium to high resin solution viscosity, temperature dependent
Density: Approximately 1.05 g/cm³, typical
Color: Low color, typically around 70 Hazen/APHA maximum
Reactivity: Crosslinkable with aliphatic polyisocyanates
Stability: Stable under recommended sealed storage; protect from heat, moisture, and ignition sources
Storage Temperature: 5–30°C, tightly closed, dry, well-ventilated
Shelf Life: Typically up to 24 months in original sealed packaging, supplier dependent

FIRST AID

Inhalation:
Move to fresh air immediately if vapors or spray mist are inhaled.
Seek medical attention if headache, dizziness, coughing, respiratory irritation, or breathing difficulty occurs.
Avoid further exposure until the area is properly ventilated.

Skin Contact:
Remove contaminated clothing and wash skin thoroughly with soap and water.
Seek medical advice if irritation, redness, or dryness develops or persists.
Do not use solvents to clean skin.

Eye Contact:
Rinse cautiously with water for at least 15 minutes.
Remove contact lenses if present and easy to do, then continue rinsing.
Seek medical attention if irritation persists or if solvent exposure is significant.

Ingestion:
Rinse mouth with water and do not induce vomiting.
Seek immediate medical attention or contact a poison center.
Never give anything by mouth to an unconscious person.

Note to Physicians:
Treat symptomatically.
Monitor for solvent exposure effects and respiratory irritation from spray mist or vapor exposure.
Provide supportive care as needed.

HANDLING AND STORAGE

Handling:
Use appropriate PPE including chemical-resistant gloves, safety goggles, and protective clothing.
Avoid breathing vapors, aerosols, or spray mist during mixing, spraying, and cleaning operations.
Keep containers closed when not in use to reduce solvent evaporation and contamination.

Ventilation:
Use local exhaust ventilation during mixing, spraying, and coating application.
Use explosion-proof ventilation and equipment where flammable solvent vapors may be present.
Avoid handling in confined spaces without adequate airflow and respiratory protection assessment.

Storage:
Store in tightly closed containers in a cool, dry, well-ventilated flammable liquids area.
Protect from heat, sparks, open flames, direct sunlight, and moisture contamination.
Keep away from strong oxidizers, strong acids, strong bases, and incompatible reactive chemicals.

Spill and Leak Procedures:
Eliminate ignition sources and ventilate the area.
Contain spill with inert absorbent and collect into approved waste containers.
Prevent entry into drains and dispose of waste according to local regulations and facility procedures.

Handling Precautions:
Control NCO/OH ratio when formulating with polyisocyanates because cure balance determines hardness, flexibility, adhesion, and chemical resistance.
Control solvent evaporation and spray conditions because viscosity, film build, flow, and leveling depend strongly on application parameters.
Rotate stock using FIFO practices to maintain consistent viscosity, solids content, and coating performance.