Filaments with high elastic modulus from polyester resins
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United States of America Patent
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Oct 28, 1997
Grant Date -
N/A
app pub date -
Jan 2, 1996
filing date -
May 6, 1993
priority date (Note) -
Expired
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Abstract
Filaments from a polyester resin having an elastic modulus higher than 30 GPa and stress at break greater than 300 MPa. The filaments are obtained by upgrading under stretch filaments prepared from polyester resin mixed in the melt with a polyfunctional compound able to increase the polymer intrinsic viscosity by addition reaction in the solid state with the terminal groups of the resin.
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