To provide a production method which can efficiently obtain an injection-molded article of polylactic acid resin having excellent heat resistance in excellent moldability.
The method for producing the injection-molded article of polylactic acid resin includes the following processes (1), (2): a process (1) in which a polylactic acid resin composition containing the polylactic acid resin and an organic crystalline nucleating agent containing at least one organic pigment selected from the group consisting of a cyclic compounds (a) having C=O and a functional group selected from NH and O in a molecule, a mixture (b) of a cyclic compound having C=O in a molecule and a cyclic compound having a functional group selected from NH, S, and O in a molecule, a phthalocyanine compound (c) which can be substituted and contain a metal, and a porphyrin compound (d) which can be substituted is melted/kneaded while being contacted with a supercritical fluid; and a process (2) in which the molten substance obtained in the process (1) is packed in a mold and injection-molded.
COPYRIGHT: (C)2010,JPO&INPIT
Hiroaki Kishimoto
Hirofumi Moriwaka
Haruomi Enomoto
| JP2005320471A | ||||
| JP2003236944A | ||||
| JP2007051274A | ||||
| JP2006176747A | ||||
| JP2008115372A |