Polyurethane resin composition and surgical casting tape therewith
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United States of America Patent
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Jun 18, 1996
Grant Date -
N/A
app pub date -
Jun 6, 1994
filing date -
Jun 22, 1993
priority date (Note) -
Expired
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Abstract
Proposed is a moisture-curable polyurethane resin composition having good storage stability under a moisture-free condition without affecting the curability in the presence of moisture. The composition comprises (a) a polyurethane prepolymer as a reaction product of a polyol compound and a polyisocyanate compound, (b) a catalytic compound to promote curing of the composition and (c) a stabilizer which is trifluoromethane sulfonic acid in a limited amount. The improvement in the storage stability of the composition is particularly remarkable when trifluoromethane sulfonic acid is used in combination with a specific curing catalyst. The composition is useful in the preparation of a surgical casting tape by coating or impregnating a flexible substrate web such as a glass fiber cloth therewith.
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