公开(公告)号：EP2759569B1

公开(公告)日：2019-10-16

申请号：EP13152557.8

申请日：2013-01-24

申请人： SO.F.TER. TECNOPOLIMERI SRL ,  Röchling Automotive SE & Co. KG

发明人： Mosca, Devid ,  Chini, Fabrizio ,  Bortolon, Vittorio ,  Petrone, Antonio

IPC分类号： C08K5/00 ,  C08K5/12 ,  C08K7/02 ,  C08K7/14 ,  C08L67/02 ,  C08L67/04 ,  C08L67/08

公开(公告)号：EP2759569A1

公开(公告)日：2014-07-30

申请号：EP13152557.8

申请日：2013-01-24

申请人： SO.F.TER. TECNOPOLIMERI SRL ,  Röchling Automotive AG & Co. KG

发明人： Mosca, Devid ,  Chini, Fabrizio ,  Bortolon, Vittorio ,  Petrone, Antonio

IPC分类号： C08K5/00 ,  C08K5/12 ,  C08K7/02 ,  C08K7/14 ,  C08L67/02 ,  C08L67/04 ,  C08L67/08

摘要： The present invention provides a polylactic acid-based composition comprising i) 70 to 95 wt.-% of a polylactic acid compound, ii) 4 to 25 wt.-% of an aromatic-based copolyester having soft segments, and iii) 0.1 to 5.0 wt.-% of a polybutylene terephthalate cyclic oligomer, as well as process for preparing this polylactic acid-based composition.
Furthermore, the present invention relates to a method for processing a polylactic acid-based composition into a moulded article, comprising the method steps of: a) providing the polylactic acid-based composition in a molten state, b) introducing the molten polylactic acid-based composition into a pre-heated moulding tool at a temperature of 90 to 120 °C, c) moulding the polylactic acid-based composition at an elevated temperature of 180 to 210 °C into a moulded article, d) cooling the moulded article within the moulding tool at a reduced temperature of 60 to 90 °C, and e) demoulding the moulded article.
Other aspects of the present invention are a moulded article obtainable by this method and uses of the polylactic acid-based composition for manufacturing components having a shock resistance greater than 20 kJ/m 2 , having scratch resistance and UV resistance, having high dimensional stability at heat deflection temperatures of more than 140 °C at 1.82 MPa, having a hot air resistance at 150 °C for more than 500 hours, and having hydrolysis resistance at 95 °C in 90 - 100 % relative humidity environments for at least 500 hours,

摘要翻译： 本发明提供了一种聚乳酸系组合物，其包含i）70至95重量的聚乳酸化合物的％，ⅱ）4至25重量具有软链段的芳香族系共聚酯的％，和iii）0.1至 5.0重量聚对苯二甲酸环状低聚物的％，以及用于制备此聚乳酸系组合物的方法。 进一步地，本发明涉及一种方法，用于处理聚乳酸系组合物成形为模制品，其包括以下方法步骤：a）提供所述聚乳酸系组合物在熔融状态下，b）将熔融的聚乳酸酸 基于组合物到预加热的模制工具以90至120℃的温度，c）中模制在上升高的温度180〜210℃的聚乳酸系组合物成形为模制品，d）冷却内模制品 在60降低的温度至90℃的模制工具，以及e）脱模模塑制品。 本发明的其它方面一个通过该方法模塑制品可获得的并且对于具有耐冲击性大于20千焦/米2更高的制造部件的聚乳酸系组合物的用途，具有耐擦伤性和耐UV性，具有高的尺寸稳定性 超过140℃的热挠曲温度在1.82兆帕，具有在150℃的热空气阻力为500小时以上，并且具有耐水解性在95℃下在90至100％相对湿度的环境中为至少500小时，