Solid, self-bondable isocyanate-containing organic polymers and methods for using same
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United States of America Patent
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Dec 12, 2017
Grant Date -
Nov 12, 2015
app pub date -
Nov 23, 2013
filing date -
Dec 14, 2012
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Abstract
Solid, non-melting polyurethanes having a glass transition temperature of at least 40° C. and free isocyanate groups are self-bonding materials that are useful in a variety of adhesive and molding operations. Under conditions of heat and moisture, these polyurethanes will self-bond. The polyurethanes can be used as adhesive coatings, which are solid and non-tacky and thus can be transported and stored easily under ambient conditions. These polyurethane adhesives are especially useful in applications in which, due to the location and/or orientation of the substrates, liquid or melting materials cannot be applied easily or will run off the substrates.
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