Method for producing highly condensed solid-phase polyesters

Details Method for producing highly condensed solid-phase polyesters Method for producing highly condensed solid-phase polyesters

2011-07-12

2011-07-12

Seidleck, James (Department: 1765)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

C528S271000, C528S272000, C528S308300, C528S50200C, C528S503000, C264S255000, C264S259000, C264S054000, C264S512000, C264S907000, C428S542800, C428S480000, C422S131000, C422S134000, C422S156000, C422S608000, C422S245100

Reexamination Certificate

active

07977448

ABSTRACT:
The invention relates to a continuous or discontinuous method for the production of highly condensed polyesters in the solid state, comprising a crystallization of a polyester material, wherein the crystallization is carried out in the presence of a gas with a dew point of (less than or equal to) ≦approximately −10° C. The invention also relates to a method for the production of polyester formed bodies using the polyester material obtained for the production of bottles, films and high strength threads.

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