Dimethylolurea

Dimethylolurea (CAS 140-95-4), also known commercially as DMU, is a methylol-functional urea derivative used as a reactive intermediate and crosslinking agent.

Where is Dimethylolurea used?

• Textile finishing: crease resistance and dimensional stability in durable press treatments on cellulosic fabrics
• Paper: wet-strength resin systems that crosslink fiber networks against moisture-induced degradation
• Coatings and adhesives: reactive monomer for urea-formaldehyde-type resin systems with controlled cure profiles
• Polymer processing: building block for modified resins with lower formaldehyde release
• It reacts with hydroxyl- and amino-functional materials under heat or acid catalysis.

Good to know: Buyers should confirm methylol content and free formaldehyde levels when evaluating grades for compliance.

Commercial specifications

• Concentration typically 50–60% in liquid form
• Technical grade standard; textile or paper purity grades from select producers