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US 5,859,180 AGranted
Process for the solid state polycondensation of polyamide resins
AssigneeSinco Engineering S.p.A.
InventorsDario Giordano, Riccardo Bianchi
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Abstract
Process for the solid state polycondensation of polyamide resins by the use in the polycondensation reactor of a quantity of an inert gas such that the ratio by weight between the solid capacity/h at the reactor outlet and that one of gas fed into the reactor is lower than 0.5.
Claims10
Process for the solid state polycondensation of polyamide resins wherein the resin is fed into a moving bed reactor and an inert gas is circulated countercurrent or equi-current with the resin, wherein the ratio R by weight between the gas capacity/h and the polymer capacity/h discharged from reactor is lower than 0.5.
Dependencies are inferred from the claim text.