metylimetakrylaatti

Metylimetakrylaatti, often abbreviated as MMA, is an organic compound with the formula CH2=C(CH3)COOCH3. It is a volatile, colorless liquid with a characteristic acrid odor. MMA is an ester of methacrylic acid and methanol. It is widely used as a monomer in the production of polymers, most notably polymethyl methacrylate (PMMA), commonly known as acrylic glass or Plexiglas.

The polymerization of MMA can occur through various mechanisms, including free radical, anionic, and cationic polymerization. PMMA is a transparent thermoplastic known for its clarity, impact resistance, and UV stability. These properties make it suitable for a wide range of applications, including automotive parts, signage, optical lenses, and construction materials. MMA is also a component in many adhesives, coatings, and dental resins.

Industrially, MMA is primarily produced through the acetone cyanohydrin process or the C4 oxidation route. It is a significant commodity chemical, with global production in the millions of tons annually. While MMA itself has relatively low toxicity, it is flammable and can cause skin and eye irritation. Proper handling and ventilation are necessary during its use and processing.