Blends of secondary alkyl aromatic diamines and polyhydric alcohols as curing agents in polyurethane manufacture
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United States of America Patent
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Jan 19, 1988
Grant Date -
N/A
app pub date -
Jun 6, 1986
filing date -
Jun 6, 1986
priority date (Note) -
Expired
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Abstract
Urethane prepolymers cured with a blend of an aromatic alkyl diamine and a polyhydric alcohol having more than two hydroxyl groups show excellent compression set and tensile properties. Ratios of diamine to alcohol in the blend, expressed as equivalents, may vary from 1:1 to 19:1, with optimum properties in the elastomer often resulting from blends with the ratio 2:1 to 4:1.
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