COMPOUND OR FILM CONTAINING THERMOPLASTIC STARCH AND A THERMOPLASTIC POLYMER

The invention relates to a method for producing a compound or a film containing thermoplastic starch, an alpha-hydroxycarboxylic acid ROHCOOH, in which R is CH2 or CH3CH2, in an amount of from 0.1 to 5, preferably 0.1 to 3, particularly preferably 0.1 to 1 wt. % in relation to the thermoplastic star...

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Bibliographische Detailangaben
Hauptverfasser:	WASTYN, Marnik Michel, FAHRNGRUBER, Barbara, KOZICH, Martin
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The invention relates to a method for producing a compound or a film containing thermoplastic starch, an alpha-hydroxycarboxylic acid ROHCOOH, in which R is CH2 or CH3CH2, in an amount of from 0.1 to 5, preferably 0.1 to 3, particularly preferably 0.1 to 1 wt. % in relation to the thermoplastic starch, and a thermoplastic polymer, in which method the compound or the film is exposed during or after its extrusion to an additional heating step to 100-140° C. A thermoplastic starch usable for the production of the compound, a compound produced by the method, and a transparent film produced from such a compound are also described.