Filaments with high elastic modulus from polyester resins

摘要

PCT No. PCT/EP94/01369 Sec. 371 Date Jan. 2, 1996 Sec. 102(e) Date Jan. 2, 1996 PCT Filed Apr. 29, 1994 PCT Pub. No. WO94/26961 PCT Pub. Date Nov. 24, 1994Filaments 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.