PLASTICIZER FOR POLYLACTIC ACID RESINS, POLYLACTIC ACID RESIN COMPOSITION USING SAID PLASTICIZER AND POLYLACTIC ACID RESIN MOLDED ARTICLE
申请人:Soken Chemical & Engineering Co., Ltd.
公开号:EP3357944A1
公开(公告)日:2018-08-08
The present invention provides a plasticizer for a polylactic acid resin that has high compatibility with the polylactic acid resin, does not decrease the forming/processing temperature of the polylactic acid resin, and is less likely to bleed from a formed product over time. The present invention also provides a polylactic acid resin composition that has high plasticity and formability and can be formed and processed even at high temperatures. The present invention also provides a polylactic acid resin formed product that is formed of the resin composition, has high plasticity, and causes no bleedout of a plasticizer. A plasticizer for a polylactic acid resin according to the present invention contains a (meth)acrylic resin. The (meth)acrylic resin is a copolymer of monomer components containing 30 to 70 parts by weight of methyl methacrylate and 30 to 70 parts by weight of an alkyl acrylate having an alkyl group having 1 to 8 carbon atoms (the monomer components are 100 parts by weight in total), has a weight-average molecular weight in the range of 10,000 to 1,000,000, and has a molecular weight distribution in the range of 3 to 10.
本发明提供了一种用于聚乳酸树脂的增塑剂,该增塑剂与聚乳酸树脂的相容性高,不会降低聚乳酸树脂的成型/加工温度,并且随着时间的推移不易从成型产品中渗出。本发明还提供了一种聚乳酸树脂组合物,它具有很高的可塑性和成型性,即使在高温下也能成型和加工。本发明还提供了一种聚乳酸树脂成型产品,该产品由该树脂组合物成型,具有高可塑性,并且不会导致增塑剂渗出。根据本发明,用于聚乳酸树脂的增塑剂含有一种(甲基)丙烯酸树脂。(甲基)丙烯酸树脂是单体组分的共聚物,单体组分含有 30 至 70 重量份的甲基丙烯酸甲酯和 30 至 70 重量份的具有 1 至 8 个碳原子的烷基的丙烯酸烷基酯(单体组分的总重量为 100 重量份),重量平均分子量在 10,000 至 1,000,000 之间,分子量分布在 3 至 10 之间。