Asphalt-based reactive polyurethane roof membrane adhesive
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United States of America Patent
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Apr 16, 2013
Grant Date -
Feb 9, 2012
app pub date -
Aug 5, 2010
filing date -
Aug 5, 2010
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Abstract
A cold applied adhesive that includes a blend of polyurethane pre-polymer, petroleum liquid and additive. The weight percent of petroleum liquid in the blend is less than 50 weight percent. The weight percent of polyurethane pre-polymer in the blend is less than 50 weight percent.
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