MACRYNAL SM 2855/70BAC

MACRYNAL SM 2855/70BAC is a hydroxy-functional acrylic resin supplied in butyl acetate for two-component polyurethane coating systems, and MACRYNAL SM 2855/70BAC is valued for fast drying, rapid hardness development, excellent chemical resistance, and strong solvent resistance.
MACRYNAL SM 2855/70BAC is designed for crosslinking with polyisocyanates in high-solids two-pack polyurethane coatings, and MACRYNAL SM 2855/70BAC is suitable for air-drying and forced-drying topcoats and clearcoats requiring low VOC, fast cure, and durable film performance.
MACRYNAL SM 2855/70BAC is typically supplied as an approximately 70% acrylic polyol resin solution in butyl acetate, and MACRYNAL SM 2855/70BAC performance depends on hydroxyl value, NCO/OH ratio, solvent blend, catalyst level, drying schedule, film thickness, and application conditions.

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 2855/70BAC, Macrynal SM 2855/70BAC, MACRYNAL 2855/70BAC, Hydroxy Acrylic Resin SM 2855/70BAC, Hydroxy-Functional Acrylic Resin, Acrylic Polyol Resin, Solventborne Acrylic Polyol, Acrylic Polyol in Butyl Acetate, High Solids Acrylic Resin, 2K PU Acrylic Resin, Polyisocyanate-Crosslinkable Acrylic Resin, Fast Drying Acrylic Polyol, MACRYNAL SM 2855/70BAC, Macrynal SM 2855, Macrynal 2855/70BAC, Macrynal SM 2855 70BAC, MACRYNAL SM 2855/70 BAC, Acrylic Resin SM 2855/70BAC, Hydroxyl Acrylic Resin SM 2855/70BAC, Hydroxy Functional Acrylic Resin SM 2855/70BAC, Polyacrylate Resin SM 2855/70BAC, Acrylic Polyol Resin SM 2855/70BAC, Solventborne Acrylic Resin SM 2855/70BAC, Solvent-Based Acrylic Resin SM 2855/70BAC, BAC Acrylic Resin SM 2855, Butyl Acetate Acrylic Resin SM 2855, 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, Macrynal High-Solid Acrylic Resin, Macrynal Medium-Solid Acrylic Resin, Macrynal Resin Solution, Macrynal 70% Resin Solution, Macrynal 70BAC Resin

APPLICATIONS

MACRYNAL SM 2855/70BAC is used in two-component polyurethane coatings where hydroxy acrylic resin is crosslinked with aliphatic polyisocyanates.
MACRYNAL SM 2855/70BAC is incorporated into high-solids topcoats to provide fast drying, rapid hardness increase, and low VOC formulation potential.
MACRYNAL SM 2855/70BAC is used in clearcoat systems where strong solvent resistance, chemical resistance, gloss, and durable appearance are required.

MACRYNAL SM 2855/70BAC is used in automotive refinish clearcoats where fast hardness development and reliable polishing behavior are important.
MACRYNAL SM 2855/70BAC is incorporated into car repair coating systems to support short processing cycles and strong final film properties.
MACRYNAL SM 2855/70BAC is used in professional refinish applications where air drying or forced drying can be selected according to workshop conditions.

MACRYNAL SM 2855/70BAC is used in aircraft coatings where chemical resistance, solvent resistance, and durable protective performance are required.
MACRYNAL SM 2855/70BAC is incorporated into military vehicle coatings in selected systems where fast cure and resistance to harsh service conditions are needed.
MACRYNAL SM 2855/70BAC is used in transportation coatings where rapid property development and durable surface protection are important.

MACRYNAL SM 2855/70BAC is used in industrial metal coatings where hardness, adhesion, gloss retention, and chemical resistance are required.
MACRYNAL SM 2855/70BAC is incorporated into machinery and equipment coatings where solventborne 2K polyurethane performance is desired.
MACRYNAL SM 2855/70BAC is used in protective topcoats where coating systems must balance fast drying with durable cured-film properties.

MACRYNAL SM 2855/70BAC is used with suitable catalysts, solvents, UV stabilizers, flow additives, and pigment packages to tailor application and final film performance.
MACRYNAL SM 2855/70BAC is incorporated into high-solids coating formulations where butyl acetate solvency and acrylic polyol compatibility support practical spray application.
MACRYNAL SM 2855/70BAC is valued because MACRYNAL SM 2855/70BAC provides a fast-drying, high-solids acrylic polyol platform for chemically resistant and solvent-resistant two-pack polyurethane coatings.

MACRYNAL SM 2855/70BAC is used as a hydroxyl-functional acrylic resin in coating formulations. MACRYNAL SM 2855/70BAC is used in two-component polyurethane coating systems. MACRYNAL SM 2855/70BAC is applied in solventborne industrial coatings. MACRYNAL SM 2855/70BAC helps produce durable crosslinked coating films.

MACRYNAL SM 2855/70BAC is used with polyisocyanate hardeners. MACRYNAL SM 2855/70BAC supports the formation of acrylic urethane networks. MACRYNAL SM 2855/70BAC is used in automotive refinish coatings. MACRYNAL SM 2855/70BAC helps provide high gloss and smooth surface appearance.

MACRYNAL SM 2855/70BAC is used in clearcoat formulations. MACRYNAL SM 2855/70BAC supports transparent and protective coating films. MACRYNAL SM 2855/70BAC is used in pigmented topcoat systems. MACRYNAL SM 2855/70BAC helps improve color depth and finish quality.

MACRYNAL SM 2855/70BAC is used in coatings for commercial vehicles. MACRYNAL SM 2855/70BAC provides durable finishes for trucks, trailers, and transport equipment. MACRYNAL SM 2855/70BAC is applied in coatings for machinery and industrial equipment. MACRYNAL SM 2855/70BAC helps improve resistance to handling, abrasion, and chemicals.

MACRYNAL SM 2855/70BAC is used in metal coating systems. MACRYNAL SM 2855/70BAC supports adhesion and surface protection on prepared metal substrates. MACRYNAL SM 2855/70BAC is used in steel coating applications. MACRYNAL SM 2855/70BAC helps maintain coating integrity under industrial conditions.

MACRYNAL SM 2855/70BAC is used in aluminum coating applications. MACRYNAL SM 2855/70BAC helps produce smooth and uniform finishes on aluminum parts. MACRYNAL SM 2855/70BAC is used in coatings for household appliances. MACRYNAL SM 2855/70BAC supports attractive and durable decorative finishes.

MACRYNAL SM 2855/70BAC is used in coatings for tools and hardware. MACRYNAL SM 2855/70BAC improves surface hardness and wear resistance. MACRYNAL SM 2855/70BAC is applied in coatings for electrical equipment housings. MACRYNAL SM 2855/70BAC helps provide protective and aesthetic surface performance.

MACRYNAL SM 2855/70BAC is used in wood coating systems. MACRYNAL SM 2855/70BAC contributes to smooth and glossy wood finishes. MACRYNAL SM 2855/70BAC is used in furniture coatings. MACRYNAL SM 2855/70BAC helps improve scratch resistance and surface protection.

MACRYNAL SM 2855/70BAC is used in plastic coating applications. MACRYNAL SM 2855/70BAC supports coating adhesion when used with suitable primers and additives. MACRYNAL SM 2855/70BAC is used in coatings for consumer goods. MACRYNAL SM 2855/70BAC helps provide durable decorative surfaces.

MACRYNAL SM 2855/70BAC is used in protective coating systems. MACRYNAL SM 2855/70BAC helps improve resistance to weathering and chemical exposure. MACRYNAL SM 2855/70BAC is used in outdoor coating formulations under suitable conditions. MACRYNAL SM 2855/70BAC supports long-term gloss retention and film durability.

MACRYNAL SM 2855/70BAC is used in high-performance acrylic urethane coatings. MACRYNAL SM 2855/70BAC helps balance hardness, flexibility, and resistance properties. MACRYNAL SM 2855/70BAC is used in high-solids coating systems. MACRYNAL SM 2855/70BAC supports reduced solvent demand in selected formulations.

MACRYNAL SM 2855/70BAC is used in fast-drying coating systems. MACRYNAL SM 2855/70BAC helps improve processing and handling efficiency. MACRYNAL SM 2855/70BAC is applied in repair coating formulations. MACRYNAL SM 2855/70BAC supports professional refinishing performance.

MACRYNAL SM 2855/70BAC is used in coating development laboratories. MACRYNAL SM 2855/70BAC is applied in formulation testing with different polyisocyanate crosslinkers. MACRYNAL SM 2855/70BAC is used in quality-control coating trials. MACRYNAL SM 2855/70BAC helps evaluate gloss, adhesion, hardness, flexibility, and chemical resistance.

MACRYNAL SM 2855/70BAC is used in specialty acrylic resin coating systems. MACRYNAL SM 2855/70BAC supports professional coatings requiring reliable film performance.

DESCRIPTION

MACRYNAL SM 2855/70BAC is a hydroxy-functional acrylic resin designed for crosslinking with polyisocyanates, and this chemistry forms durable polyurethane networks after curing.
MACRYNAL SM 2855/70BAC contains hydroxyl groups on the acrylic polymer backbone, and these hydroxyl groups react with isocyanate groups to develop hardness, chemical resistance, and solvent resistance.
MACRYNAL SM 2855/70BAC is a high-solids binder used for fast-drying, highly crosslinked two-pack polyurethane coatings with outstanding chemical and solvent resistance.

MACRYNAL SM 2855/70BAC is suitable for air-drying and forced-drying high-solids topcoats and clearcoats where low VOC and very fast hardness increase upon curing are desired.
MACRYNAL SM 2855/70BAC formulation performance depends on NCO/OH ratio, catalyst level, solvent evaporation profile, film build, temperature, humidity, and substrate preparation.
MACRYNAL SM 2855/70BAC requires accurate formulation balance because under-crosslinking or over-crosslinking can affect flexibility, adhesion, hardness, gloss, and chemical resistance.

MACRYNAL SM 2855/70BAC should be stored in tightly closed containers because solvent loss, moisture contamination, and skin formation can affect viscosity and application behavior.
MACRYNAL SM 2855/70BAC should be handled as a flammable solventborne resin solution, and ignition sources, static discharge, vapors, and spray mist should be controlled during use.
MACRYNAL SM 2855/70BAC should be used according to supplier recommendations, coating regulations, VOC requirements, and workplace safety standards.

MACRYNAL SM 2855/70BAC is a solventborne acrylic resin. MACRYNAL SM 2855/70BAC is commonly supplied at about 70% solids. MACRYNAL SM 2855/70BAC is supplied in butyl acetate as the main solvent. MACRYNAL SM 2855/70BAC is a hydroxyl-functional resin designed for crosslinking.

MACRYNAL SM 2855/70BAC is typically used with polyisocyanate hardeners. MACRYNAL SM 2855/70BAC forms acrylic polyurethane networks after curing. MACRYNAL SM 2855/70BAC provides good film hardness. MACRYNAL SM 2855/70BAC contributes to high gloss and smooth appearance.

MACRYNAL SM 2855/70BAC offers good chemical resistance in cured coating systems. MACRYNAL SM 2855/70BAC supports good weathering resistance in suitable formulations. MACRYNAL SM 2855/70BAC provides balanced hardness and flexibility. MACRYNAL SM 2855/70BAC helps produce durable and protective coating films.

MACRYNAL SM 2855/70BAC has good compatibility with many coating additives. MACRYNAL SM 2855/70BAC can be formulated with pigments, fillers, solvents, and flow agents. MACRYNAL SM 2855/70BAC is suitable for clear and pigmented coating systems. MACRYNAL SM 2855/70BAC is valued for professional industrial coating performance.

MACRYNAL SM 2855/70BAC should be stored in tightly closed containers. MACRYNAL SM 2855/70BAC should be protected from heat, sparks, and open flames. MACRYNAL SM 2855/70BAC should be stored in a cool and well-ventilated area. MACRYNAL SM 2855/70BAC should be kept away from incompatible materials.

MACRYNAL SM 2855/70BAC contains organic solvent and requires proper ventilation during handling. MACRYNAL SM 2855/70BAC may be flammable because of its solvent content. MACRYNAL SM 2855/70BAC should be handled with suitable protective equipment. MACRYNAL SM 2855/70BAC performance depends on hardener selection, mixing ratio, curing conditions, and total formulation design.

MACRYNAL SM 2855/70BAC is an important acrylic polyol resin for high-performance solventborne polyurethane coatings.

PROPERTIES

Common Name: MACRYNAL SM 2855/70BAC
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 6.0% on solids, typical
Hydroxyl Equivalent Weight: Approximately 400 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, grade dependent
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, dryness, or defatting 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 vapor, aerosol, or spray mist 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, moisture contamination, and fire risk.

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, leveling, and drying speed depend strongly on application parameters.
Rotate stock using FIFO practices to maintain consistent viscosity, solids content, and coating performance.