FILMS CONTAINING POLYHYDROXY ACIDS

The invention relates to films of blends of polyhydroxy acid and other compatible thermoplastic polymers, and their production by melt processing the materials to obtain uniform composition, and forming the composition into a film of thickness from 0.01 to 2 mm. Such films are useful for conventiona...

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Bibliographische Detailangaben
1. Verfasser:	OSTAPCHENKO, GEORGE, JOSEPH
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	The invention relates to films of blends of polyhydroxy acid and other compatible thermoplastic polymers, and their production by melt processing the materials to obtain uniform composition, and forming the composition into a film of thickness from 0.01 to 2 mm. Such films are useful for conventional film uses where the film is to be discarded into the environment after usage. L'invention concerne des films de mélanges d'acide polyhydroxy et d'autres polymères thermoplastiques compatibles, ainsi que leur production par traitement par fusion des matières afin d'obtenir une composition uniforme, et par transformation de la composition en un film d'une épaisseur comprise entre 0,01 et 2 mm. Lesdits films sont utiles dans des utilisations de films classiques dans lesquels ces derniers sont ensuite rejetés dans l'environnement après emploi.