申请人:Board of Trustees of Michigan State University
公开号:EP1361039A1
公开(公告)日:2003-11-12
Polymeric materials and products, including sheet flooring materials prepared from the polymeric materials, and processes for preparing the polymeric materials, are disclosed. The polymeric materials include a polylactic acid-based polymer in combination with plasticizer and a compatibilizer, and optionally include a filler. The polymeric material can include between about 30 to about 50 percent by weight polyvinyl chloride, polyethylene glycol, polyglycolide, ethylene vinyl acetate, polycarbonate, polycaprolactone, polyhydroxyalkanoates, or polyolefins modified with polar groups, for example, ionomers. The plasticizer is typically an epoxidized vegetable oil or esterified and epoxidized vegetable oil and is typically present in an amount of between about 10 and about 50% by weight. In some embodiments, the compatibilizer is a polyolefin modified with one or more polar functional groups, and is typically present in an amount of between about 5 and about 10% by weight. The material can be used in decorative surface coverings, such as a floor coverings, particularly when it is in the form of a polymeric sheet. The polymeric material can be present in at least one layer of a floor covering, which floor covering can also include one or more additional layers such as wear layers, foamed or foamable layers, top coat layers and design layers. The additional layers can also include the polymeric material.
本发明公开了聚合材料和产品,包括用聚合材料制备的片状地板材料,以及制备聚合材料的工艺。聚合材料包括聚乳酸基聚合物与增塑剂和相容剂的组合,还可选择包括填料。聚合材料可包括约 30%至约 50%(重量百分比)的聚氯乙烯、聚乙二醇、聚乙二醇醚、乙烯-醋酸乙烯酯、聚碳酸酯、聚己内酯、聚羟基烷酸酯或用极性基团改性的聚烯烃,例如离子聚合物。增塑剂通常是环氧化植物油或酯化和环氧化植物油,其含量通常在约 10%至约 50%(按重量计)之间。在某些实施例中,相容剂是一种用一个或多个极性官能团改性的聚烯烃,其含量通常在约 5%至约 10%(按重量计)之间。这种材料可用于装饰性表面覆盖物,如地板覆盖物,特别是当它以聚合片材的形式存在时。聚合材料可以存在于地板覆盖物的至少一层中,地板覆盖物还可以包括一层或多层附加层,如耐磨层、发泡层或可发泡层、面漆层和设计层。这些附加层也可以包括聚合材料。