Interpenetrating dual cure resin compositions
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United States of America Patent
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-
Aug 3, 1982
Issued Date -
N/A
app pub date -
Sep 29, 1980
filing date -
Jan 14, 1977
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Curable resin compositions are prepared containing a radiation-sensitive reactive diluent and a saturated polyol. Curing is accomplished by mixing the reactive diluent and the polyol with a polyisocyanate, followed by exposure of the resultant composition to radiation to polymerize the reactive diluent and then, by thermal curing, to form the hydroxyisocyanate (urethane) linkage. The fully cured resin composition is described as interpenetrated or one in which there is no cross-linking between the reactive diluent and urethane linked co-polymer. The interpenetrated resin compositions form tough and hard coatings on various substrates.
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