Reactive roofing adhesive
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United States of America Patent
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Jun 6, 2017
Grant Date -
Feb 13, 2014
app pub date -
May 4, 2012
filing date -
May 5, 2011
priority date (Note) -
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Abstract
A two-part adhesive includes an A side, a B side, at least one of a polyurethane prepolymer and a diisocyanate, a polyol, a catalyst, and an adhesion promoter. The polyurethane prepolymer or diisocyanate is present in the A side from about 50% to 100% by weight of the A side composition. The polyol is present in the B side from about 52% to about 98% by weight of the B side composition. The catalyst is present in the B side from about 0.5% to about 5% by weight of the B side composition. The adhesion promoter is present in at least one of the A side composition and the B side composition from about 10% to about 50% by weight of the two-part adhesive. A ratio of isocyanate groups in the A side to hydroxyl groups in the B side is greater than 1.5:1.
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Cited Art Landscape
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