2,2,4-Trimethyl-1,3-pentanediol

2,2,4-Trimethyl-1,3-pentanediol (CAS 144-19-4), commonly known as TMPD, is a specialty diol used across coatings, adhesives, and polymer systems.

Where is 2,2,4-Trimethyl-1,3-pentanediol used?

• Coatings: coalescing solvent, plasticizer, and rheology modifier
• Waterborne architectural and industrial coatings: coalescing agent that improves film formation
• Adhesives and sealants: flexibility and substrate adhesion in polyurethane and acrylic formulations
• Polyester resin synthesis: diol monomer that introduces branching to control hardness and flexibility
• Cleaning products: carrier solvent where low volatility is required
• It provides good solvency for organic soils in hard-surface and industrial cleaning concentrates.

Good to know: It performs well at low temperatures without the regulatory burden of conventional glycol ethers.

Commercial specifications

• Purity typically 98% or higher
• Packaging from drums to bulk isotanks