abstract |
PCT No. PCT/EP95/02231 Sec. 371 Date Dec. 19, 1996 Sec. 102(e) Date Dec. 19, 1996 PCT Filed Jun. 9, 1995 PCT Pub. No. WO95/35343 PCT Pub. Date Dec. 28, 1995An increase in the molecular weight of virgin polycondensates and polycondensate recyclates can be achieved by heating to above the melting point or glass transition temperature and by the addition of diphosphonite. |