Tert.-Butyl Methacrylate (TBMA)

CAS#: 585-07-9
Synonyms: t-Butyl 2-methylpropenoate

Tert.-Butyl Methacrylate (TBMA) is a specialty methacrylate monomer known for imparting rigidity, hardness, and excellent weathering performance to acrylic polymers. Its bulky tert-butyl group significantly increases glass transition temperature (Tg), making it an effective modifier for improving heat resistance, UV stability, and dimensional stability in high-performance formulations. TBMA is widely used in outdoor-durable coatings and engineering resin systems where long-term stability is critical.

Key Features:

• Bulky monomer structure increases rigidity and hardness

• Enhances UV resistance and long-term weatherability

• Improves heat resistance and high-Tg performance

• Contributes to chemical resistance and gloss retention

• Compatible with a wide range of acrylic and methacrylate monomers

Applications:

• Weather-resistant and high-performance coatings

• Adhesives requiring rigidity and elevated Tg

• Engineering resins and impact-resistant acrylics

• Automotive, industrial, and architectural finishes