To provide a composition capable of providing a molding having excellent heat resistance, capable of reducing the amount of an E-sol-insoluble foreign matter, and having satisfactory light transmittance.
This composition (A) includes a polylactic acid (B) containing 90 mol.% or more of L-lactic acid unit, and a polylactic acid (C) containing 90 mol.% or more of D-lactic acid unit, has 10/90-90/10 of weight ratio as the former(B)/the latter (C), and satisfies simultaneously following required conditions (a)-(c): (a) a weight-averaged molecular weight is 80 thousands or more to 500 thousands or less, (b) a stereo-formation degree (S) is 80% or more when measured by a differential scanning calorimeter (DSC), and (c) an insoluble content when dissolving the composition (A) into the E-sol is 0.1 wt.% or less with respect to the composition (A) as a reference.
TO SHIN
YAMANE HIDEKI
KIMURA YOSHIHARU
MASAKI ONORI
MUSASHINO KAGAKU KENKYUSHO
| JP2008063456A | 2008-03-21 | |||
| JP2008063356A | 2008-03-21 | |||
| JP2007191630A | 2007-08-02 |
| WO2006095923A1 | 2006-09-14 |
Taizo Shiraishi
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