Photo-curable transfer sheet, process for the preparation of optical information recording medium using the sheet, and optical information recording medium
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United States of America Patent
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Dec 23, 2014
Grant Date -
Sep 20, 2007
app pub date -
Oct 6, 2004
filing date -
Oct 7, 2003
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Abstract
A photo-curable transfer sheet having a photo-curable transfer layer comprising a photo-curable composition, the photo-curable composition being deformable by application of pressure and containing a reactive polymer having a photopolymerizable functional group,
- wherein the photo-curable transfer layer shows linearity in relationship between strain [γ] (%) and time [t] (second) measured by a creep test using a dynamic viscoelasticity measuring apparatus under the conditions of an ordinary temperature, stress of 50 Pa and a time period of 120 seconds, and satisfies a following formula: log γ=a+b·log t, in which “a” is a real number, and “b” is in the range of 0.10 to 0.53; and a process for the preparation of an optical information recording medium using the sheet and an optical information recording medium.
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