Hexamethylene diisocyanate (HDI) CAS 822-06-0
Hexamethylene diisocyanate (HDI) is an aliphatic diisocyanate commonly used as a crosslinking monomer and reactive intermediate in the manufacture of polyurethane coatings, elastomers, adhesives and specialty polyurethanes. HDI-based chemistries are selected where weathering, gloss retention and aliphatic durability are required. Handle HDI under controlled, moisture-free conditions and follow established industrial hygiene and process-safety practices.
Applications
- Coatings (aliphatic polyurethane coatings)
HDI is used to produce aliphatic polyurethane resins and crosslinkers that deliver UV-stable, high-gloss, weather-resistant coating systems for automotive refinishes, industrial coatings and protective topcoats. - Adhesives and Sealants
HDI-based isocyanurates and prepolymers are formulated into adhesives and sealants that require strong adhesion, flexibility and environmental resistance. - Elastomers and Flexible Polymers
Used in the synthesis of elastomeric polyurethanes and crosslinkers for applications requiring abrasion and chemical resistance. - Crosslinking and Polyurethane Prepolymers
Employed to manufacture NCO-terminated prepolymers and oligomers for subsequent reaction with polyols or amines to form tailored polyurethane networks. - Specialty chemical intermediates
Used as a reactive intermediate to introduce aliphatic diisocyanate functionality into specialty molecules and formulations.
