Polyethylene glycol diamine

Polyethylene glycol diamine (CAS 24991-53-5), commonly abbreviated as PEG diamine, is a difunctional amine-terminated polyether used to introduce flexible, hydrophilic segments into polymer networks.

Where is Polyethylene glycol diamine used?

• Epoxy coatings and adhesives: flexible curing agent that reduces brittleness in cured films while maintaining adhesion to demanding substrates
• Polyurethane and polyurea: soft-segment extender to tune elasticity and moisture response in sealants and elastomeric components
• Textiles and technical fibers: amine reactivity grafts hydrophilic functionality, improving wettability and dye uptake
• Industrial cleaning and home care: rheology adjustment and surface-active behavior in polymer-based systems
• Its terminal amine groups react directly with epoxies, isocyanates, and anhydrides for controlled crosslinking and chain extension.

Commercial specifications

• Molecular weights typically 400 to 4000 g/mol; MW influences flexibility and density
• Technical grade; purity and amine value specified per lot
• Bulk and drum quantities