Polylactic acid stereocomplex composition, its molded product, a process for its manufacture and its application

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United States of America Patent

PATENT NO 9644095
APP PUB NO 20160272811A1
SERIAL NO

14778375

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Abstract

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The instant invention discloses a polylactic acid stereocomplex composition containing pure stereocomplex crystals and a process for its manufacture. The composition according to this invention comprising (a) 30-70 wt % poly (L-lactic acid) (PLLA). (b) 70-30 wt % poly (D-lactic acid) (PDLA) and (c) 0.01-10 wt % nucleating agent, which can be obtained by solution and melt blending. Stereocomplex crystals are preferentially formed according to the invention, and the homocrystals (a crystal form) for the PLLA or PDLA homopolymer can't be observed. The melting temperature of the composition according to the invention is at least 200° C., which is about 30-50° C. higher than the PLLA or PDLA homopolymer.

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Patent Owner(s)

Patent OwnerAddress
PURAC BIOCHEM BV4206 AC GORINCHEM
INSTITUTE OF CHEMISTRY CHINESE ACADEMY OF SCIENCES100190 NO 2 NORTH FIRST STREET HAIDIAN DISTRICT BEIJING ZHONGGUANCUN BEIJING CITY BEIJING CITY 100190

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dong, Xia Beijing, CN 1 0
Liu, Guoming Beijing, CN 22 29
Wang, Dujin Beijing, CN 3 14
Wang, Rui Beijing, CN 821 4323
Wen, Tao Beijing, CN 22 75
Xiong, Zujiang Beijing, CN 1 0
Zhang, Xiuqin Beijing, CN 8 22

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