Method for producing highly condensed solid-phase polyesters
AssigneeLurgi Zimmer GmbH
InventorsBrigitta Otto, Hans Reitz, Holger Bachmann, Klaus Kirsten
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Abstract
The invention relates to a continuous or discontinuous method for the production of highly condensed polyesters in the solid state, comprising a crystallisation of a polyester material, wherein the crystallisation 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.
Claims20
Method of producing polyesters, comprising a crystallisation of a polyester material, wherein the crystallisation is carried out in the presence of a gas with a dew point of (less than or equal to) <approximately −10° C.
Method for the production of a polyester formed body, comprising a crystallisation of a polyester material, wherein the crystallisation is carried out in the presence of a gas with a dew point of (less than or equal to) <approximately −10° C., and producing a polyester formed body.
Dependencies are inferred from the claim text.