DURANATE Asahi kasei
Hexamethylene Diisocyanate Curing Agent for Urethanes
HOME Standard Fast-drying High-flexure Low-polar solvent compatible
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Test methods
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Solvent properties
Test materials and methods The DuranateTM test results shown in this brochure were determined by the following methods except where otherwise specifically indicated.

Coating process
Materials Polyol: Acrydic A801 (DIC Corporation)
DuranateTM/polyol ratio: NCO/OH = 1.0.
Viscosity: 15 sec in Ford Cup No. 4, following dilution by
urethane thinner.
Application Air spray. Film applicatior. Dry film thickness : 40 micrometers.
Drying Drying 20°C, 65% RH.

Test methods
Drying rate Time from coating application to freedom from indentation by 100-g cylinder covered with 5-layer gauze and left on surface for 1 minute.
Gel fraction Ratio of coated film weight after and before immersion in acetone for 24 hr at 20°C, following its removal from polypropylene substrate.
Hardness ASTM D3363; hardness of pencil leaving no groove in coated film surface.
Adhesion ASTM D3359; crosscut tape with 100 squares each 1×1 mm.
Flexibility ASTM D1737
Impact resistance ASTM D2794
Water resistance Appearance of coated film after 24 hr in deionized water at 20°C.
Gasoline resistance Appearance of coated film after 24 hr in regular gasoline at 20°C.
Chemical resistance Appearance of coated film after 24 hr in indicated chemical at 20°C.
Weatherability ASTM G23 Method 1; Sunshine carbon arc, black panel, 63°C, 12-min water spray per 60-min cycle.
Stress-strain ASTM D2370; 50-mm interchuck gap, 50 mm/min draw (100%/min strain).
All test data and values shown in this brochure are based on typical laboratory tests by the indicated test methods, presented for basic reference only and not as any specification or warranty, and subject to change without notice.
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