CAS No. 104-38-1

Molecular Formula: C₁₀H₁₄O₄

Molecular Weight: 198.22

Appearance: Off-white powder

Melting range: 102-105

Moisture %: 0.3

Hydroxyl Value: 535±15mg KOH/g

Boiling Point at 0.3mm Hg, :190

Solubility at 25℃ ,wt.%

Water: <1

Acetone: 4

Ethanol: 4

Ethyl Acetate: 1

Ethane: <1

Dimethylacetamide (DMAC): 1

Specific Heat Cal/g/℃: 0.4

Melt Density at 110℃ g/ml: 1.15

Melt Viscosity at 110℃ , cp1:15

Bulk Density (loose) g/ml: 0.51

Bulk Density (packed) g/ml: 0.62

Pounds/53 gallons: 250

Hygroscopicity, %

Dried at 50℃ ,34mmHg, 16hrs: 0.08

At 24℃ , 66.5 Relative Humidity, 168hrs: 0.39

Applications: HQEE is a symmetrical aromatic diol chain extender. It can improve tensile, hardness, resilience properties to MDI-polyurethane elastomers.  HQEE/ MDI is a PU elastomer series parallels MOCA/TDI. Finished products as: oil well seals, forklift tires, conveyor belt, hydraulic cylinder seals, many other PU products and spandex. LCU elastomers require two principle components: a prepolymer terminated with reactive isocyanate groups and a difunctional active hydrogen-terminated chain extender. Prepolymer is a product based on the reaction of polyester or polyether with isocyanate (TDIMDIADI). The chain extender is usually a short chain of diamine or diol. MDI prepolymers are usually extended with diols.

Storage: HQEE is very sensitive to moisture, it should be stored in a dry location.

Packaging: Net 20kg fibre drum with PE liner.