Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2004-12-21
2010-11-02
Wu, David (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C525S418000, C525S450000, C524S009000, C524S537000, C524S539000, C524S599000
Reexamination Certificate
active
07825212
ABSTRACT:
This invention provides a polylactic acid resin composition in which stereocomplex crystals of poly-L-lactic acid and poly-D-lactic acid can be selectively crystallized to obtain polylactic acid having a sufficiently high speed of crystallization and a sufficiently high ratio of stereocomplex crystal and a molded article thereof obtained via melt molding and crystallization of the same. Such polylactic acid resin composition comprises polylactic acid capable of generating stereocomplex crystallization and an aromatic urea compound represented by formula (1):wherein R1represents an alkylene group having 1 to 10 carbon atoms; R2represents an alkyl group having 1 to 25 carbon atoms; and m is an integer between 1 to 6.
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Kageyama Yuji
Kanamori Takeshi
Nakano Mitsuru
Okamoto Hirotaka
Okuyama Hisashi
Bernshteyn Michael M
Oliff & Berridg,e PLC
Toyota Jidosha & Kabushiki Kaisha
Wu David
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