Adhesives for making multilayer films comprising liquid crystalline polymer and polypropylene
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United States of America Patent
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Jan 11, 2000
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N/A
app pub date -
Oct 20, 1997
filing date -
Oct 20, 1997
priority date (Note) -
Expired
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Abstract
Multilayer films that include a thermotropic liquid crystalline polymer film layer and a polypropyene film layer are bound together using hot melt adhesives which may be either (1) a blend of poly(.alpha.-olefins), comprised of isotactic polypropylene, a polymer of a second lower poly(.alpha.-olefin), and a small amount of a higher poly(.alpha.-olefin), or (2) a blend of poly(propylene-graft-maleic anhydride) and a dimer acid based polyamide. These hot melt adhesives also act as compatiblizers for blends of polypropylene and thermotropic liquid crystalline polymers.
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