1,6-Hexanediol

Core Application Areas

1. High-Performance Polyurethane Materials

Elastomer Modification: Reacts with isocyanates as a chain extender to enhance the mechanical strength (tensile strength increased by 20%), water resistance (water absorption < 0.5%), and heat resistance (glass transition temperature increased by 15°C) of polyurethane elastomers; used in automotive suspension components, industrial rubber rollers, etc.

Synthesis of Thermoplastic Polyurethane (TPU): Improves low-temperature flexibility and toughness (brittleness temperature -40°C); used in ski boots, phone cases, etc.

Coatings and Adhesives:

Synthesis of water-based polyurethane dispersions to improve film adhesion (cross-cut test grade 0) and weather resistance (no chalking after 500 hours in QUV aging test); used in wood coatings and leather finishes.

Used as an adhesive curing agent to enhance bonding strength to metals and plastics (shear strength > 10 MPa).

2. Eco-friendly Polyesters and Composite Materials

Polyester Resins:

Copolymerization with terephthalic acid to produce polyhexylene terephthalate (PHT), combining the rigidity of PET with the toughness of PBT; used in electronic and electrical housings, automotive interior parts.

Copolymerization with adipic acid to produce polyhexylene adipate (PHA), which is biodegradable (degradation rate > 80% in soil within 6 months); used in food packaging and agricultural mulch films.

Carbon Fiber Sizing Agents:

Optimize the wettability of epoxy resin to fibers, increasing the interlaminar shear strength of composite materials by 18%; used in aerospace structural components.

3. Electronic and New Energy Materials

Photoresist Solvents: High-purity HDO (purity ≥ 99.99%) is used in semiconductor photoresists; low volatility (evaporation rate only 0.05 times that of butyl acetate) ensures lithography precision, suitable for processes below 14nm.

Used as a reactive diluent for electronic encapsulation adhesives to reduce system viscosity (viscosity at 25°C < 500 mPa·s) and improve potting efficiency.

Battery Binders: Improve the adhesion and conductivity of electrode materials, reduce battery pack density (weight reduction of 15%), and enhance the driving range of electric vehicles.

4. Fine Chemicals and Pharmaceuticals

Pharmaceutical Intermediates:

Synthesis of antiepileptic drugs, lipid-lowering drugs, etc., or used as drug carriers to improve the dispersibility of poorly soluble drugs (e.g., drug loading capacity in nano-suspensions increased by 3 times).

Used in the synthesis of bioabsorbable sutures, which degrade completely within 6-12 months in the body.

Flavors and Cosmetics: Used in small amounts to formulate fruity fragrances (e.g., apple, pear scents), or as a humectant in skincare products to enhance skin permeability (permeability increased by 40%).

CAS NO: 629-11-8

EC NO: 211-074-0

Molecular Formula: C₆H₁₄O₂

Molecular Weight: 118.1742

Alias: 1,6-Hexanediol; 1,6-Dihydroxyhexane; 1,6-HDO;

Structure Formula: