| 摘要 |
It is intended to provide a process for producing a polylactic acid, or film thereof, excelling in heat resistance and strength without the use of any harmful solvent. It is also intended to provide an aqueous emulsion of polylactic acid, or coating agent containing the same, suitable for production of polylactic acid in which any harmful solvent is not contained. There is provided a process for producing polylactic acid, comprising: the step (1) of preparing both of an aqueous emulsion of poly-L-lactic acid and an aqueous emulsion of poly-D-lactic acid; the step (2) of mixing the aqueous emulsions together to thereby obtain a mixed emulsion; and the step (3) of drying the mixed emulsion.
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