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    • 6. 发明公开
    • USE OF MONO-SUBSTITUTED SUCCINIC ANHYDRIDE IN POLYLACTIC ACID COMPOSITE FILLED WITH CALCIUM CARBONATE
    • 单取代琥珀酸酐在填充碳酸钙的聚乳酸复合材料中的应用
    • EP3272799A1
    • 2018-01-24
    • EP16180243.4
    • 2016-07-19
    • Omya International AG
    • RENTSCH, SamuelWELKER, MatthiasPICHLER, ChristopherBRUNNER, MartinKNERR, MichaelFORNERA, Tazio
    • C08K3/26C09C1/02C08K5/1539C08K9/04C08G63/91
    • C08K3/26C08K5/1539C08K9/04C08K2003/265C09C1/021C08L67/04
    • The present invention refers to the use of at least one mono-substituted succinic anhydride before or during extrusion of a polymer composition comprising polylactic acid as polymer component and at least one calcium carbonate-comprising material as filler, to reduce the polymer decomposition during processing and/or to decrease the melt flow rate of such an extruded polymer as well as a method for reducing the polymer decomposition during processing and decreasing the melt flow rate of a polymer composition comprising polylactic acid as polymer component and at least one calcium carbonate-comprising material as filler, the use of a polymer composition obtainable by a process comprising the steps of a) providing at least one polylactic acid as polymer component, b) providing at least one calcium carbonate-comprising material as filler, c) providing at least one mono-substituted succinic anhydride and d) contacting the components of a), b) and c) in any order and e) extruding the contacted components of step d) as well as an article comprising a polymer composition obtainable by the aforementioned process.
    • 本发明涉及在挤出包含聚乳酸作为聚合物组分的聚合物组合物和至少一种含碳酸钙材料作为填料的聚合物组合物之前或期间使用至少一种单取代的琥珀酸酐,以减少加工过程中的聚合物分解和 /或降低这种挤出聚合物的熔体流动速率以及减少加工过程中聚合物分解的方法和降低聚合物组合物的熔体流动速率的方法,所述聚合物组合物包含聚乳酸作为聚合物组分和至少一种含碳酸钙的材料 作为填料,使用通过包括以下步骤的方法可获得的聚合物组合物:a)提供至少一种聚乳酸作为聚合物组分,b)提供至少一种含碳酸钙的材料作为填料,c)提供至少一种单 取代的琥珀酸酐和d)以任何顺序与a),b)和c)的组分接触,和e)挤出接触物 步骤d)的组分以及包含可通过前述方法获得的聚合物组合物的制品。