Polylactic acid and manufacturing process thereof

Details Polylactic acid and manufacturing process thereof Polylactic acid and manufacturing process thereof

C - Chemistry, Metallurgy

08

G

C08G 63/06 (2006.01) C08G 63/91 (2006.01) C08K 7/02 (2006.01) C08L 67/04 (2006.01) C08L 101/16 (2006.01)

Patent

CA 2575049

A polylactic acid that contains a stereocomplex crystal, excelling in moldability and that has a high molecular weight, high crystallinity and high melting point; and a process for producing the same. Further, there are provided a composition of the polylactic acid and a molding thereof. In particular, there is provided a polylactic acid of 8 to 50~104 weight average molecular weight wherein in the measurement by means of differential scanning calorimeter (DSC), the ratio of >=195~C melting peak to all melting peaks during temperature rise step is >=80%, and provided a process for producing the same.

Cet acide polylactique contient un cristal stéréocomplexe, présentant d'excellentes capacités de moulage et qui présente un poids moléculaire élevé, une forte cristallinité et un point de fusion élevé ; son processus de production. De plus, sont fournis une composition de l'acide polylactique et un moulage de celui-ci. Est particulièrement présenté un acide polylactique de 8 à 50 x 10<SUP>4</SUP> de poids moléculaire moyen en poids dans lequel, dans la mesure au moyen d'un calorimètre d'analyse différentielle (DSC), le ratio de =195°C de pic de fusion à tous les pics de fusion pendant une étape d'augmentation de la température est =80 % ; est également fourni son processus de production.

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