methylmetakrylát

Methyl methacrylate, often abbreviated as MMA, is an organic compound with the formula CH2=C(CH3)COOCH3. It is a colorless, volatile liquid with a distinct acrid odor. MMA is a monomer, meaning it is a small molecule that can chemically bond with other monomers to form a larger polymer chain. The primary polymer derived from methyl methacrylate is poly(methyl methacrylate), commonly known as PMMA.

PMMA is a transparent thermoplastic often used as a shatter-resistant alternative to glass. It is recognized for its clarity, durability, and UV resistance. Applications for PMMA include acrylic sheets for windows and displays, lenses, automotive taillights, and various consumer goods. In dentistry, MMA is used in some dentures and artificial nails.

Methyl methacrylate is produced industrially through several chemical processes, with the acetone cyanohydrin (ACH) process being one of the most common. It is also a reactive substance and can undergo polymerization, sometimes exothermically, if not properly inhibited. Due to its flammability and potential for irritation, handling and storage require appropriate safety precautions. MMA is an important intermediate in the chemical industry, contributing to a wide range of materials and products.