Release agent and release sheet
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United States of America Patent
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N/A
Issued Date -
Dec 1, 2005
app pub date -
Apr 22, 2005
filing date -
Oct 25, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A release agent comprising (A) an olefin-based elastomer having a density of not less than 0.855 g/cc and less than 0.868 g/cc, and (B) an ethylene-.alpha.-olefin copolymer having a density of from 0.868 g/cc to 0.970 g/cc as main components, wherein the difference in average density between the components (A) and (B) is not less than 0.005 g/cc and the mixing weight ratio of the component (A) to the component (B) is from 90:10 to 10:90. Such a release agent contains no silicone-based components generating undesired gasses, can exhibit not only a good releasability to various adhesives but also a less fluctuation in peeling force, and can maintain a low peeling force even when the release agent is bonded to an adhesive and preserved under a heating condition.
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