Bonded assembly and method for preparing same
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United States of America Patent
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Jan 13, 2004
Grant Date -
N/A
app pub date -
Jul 30, 2001
filing date -
Jul 30, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of preparing a bonded assembly of two substrates at least one of which is transparent or translucent to UV or visible light, comprises a) applying, to at least one of the substrates, a photo/anaerobic dual cure composition comprising: i) a (meth)acrylate-capped urethane oligomer, ii) at least one (meth)acrylate diluent monomer, iii) an anaerobic curing system, and iv) a free-radical photoinitiator; b) joining the two substrates c) irradiating the adhesive through said transparent or translucent substrates with light of a wavelength effective to activate the photoinitiator for a time sufficient to at least fixture the adhesive, and then d) allowing the assembly to further cure at ambient conditions without for at least 24 hrs without subjecting the fixtured assembly to substantial peel stresses.
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