Ethylene glycol dimethacrylate

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Ethylene glycol dimethacrylate (EGDMA) is a chemical compound that is widely used in the production of polymers and resins. It is a dimethacrylate ester of ethylene glycol and is commonly used as a crosslinking agent in the manufacture of various polymeric materials.

Chemical Structure and Properties

Ethylene glycol dimethacrylate has the chemical formula C₁₀H₁₄O₄. It consists of two methacrylate groups attached to an ethylene glycol backbone. The presence of these methacrylate groups allows EGDMA to participate in polymerization reactions, forming crosslinked networks.

Synthesis

EGDMA is typically synthesized through the esterification of methacrylic acid with ethylene glycol. This reaction is catalyzed by an acid catalyst and involves the removal of water to drive the reaction to completion.

Applications

Ethylene glycol dimethacrylate is used in a variety of applications, including:

• Dental materials: EGDMA is used in the formulation of dental composites and dental adhesives due to its ability to form strong, durable crosslinked networks.
• Coatings: It is used in the production of protective coatings and paints to enhance their mechanical properties and chemical resistance.
• Adhesives: EGDMA is a key component in the formulation of various adhesives and sealants.
• Polymer synthesis: It is used as a crosslinking agent in the production of hydrogels, ion exchange resins, and other specialized polymers.

Safety and Handling

Ethylene glycol dimethacrylate should be handled with care, as it can cause skin and eye irritation. Proper personal protective equipment (PPE) such as gloves and goggles should be worn when handling this chemical. It is also important to work in a well-ventilated area to avoid inhalation of vapors.

See Also

• Methacrylic acid
• Polymerization
• Crosslinking agent
• Dental composite
• Hydrogel