The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2012
Filed:
Jul. 20, 2005
Yoshiharu Kimura, Omihachiman, JP;
Zhen Tang, Chuo-ku, JP;
Kazuki Fukushima, Itami, JP;
Kiyotsuna Toyohara, Iwakuni, JP;
Ryuji Nonokawa, Iwakuni, JP;
Yasuhito Maeda, Tokushima, JP;
Masayuki Takada, Chuo-ku, JP;
Yuka Komazawa, Chuo-ku, JP;
Tsuyoshi Aoki, Chuo-ku, JP;
Yoshiharu Kimura, Omihachiman, JP;
Zhen Tang, Chuo-ku, JP;
Kazuki Fukushima, Itami, JP;
Kiyotsuna Toyohara, Iwakuni, JP;
Ryuji Nonokawa, Iwakuni, JP;
Yasuhito Maeda, Tokushima, JP;
Masayuki Takada, Chuo-ku, JP;
Yuka Komazawa, Chuo-ku, JP;
Tsuyoshi Aoki, Chuo-ku, JP;
Teijin Limited, Osaka, JP;
Musashino Chemical Laboratory, Ltd, Tokyo, JP;
Mutual Corporation, Osaka, JP;
Other;
Abstract
It is an object of the present invention to provide polylactic acid containing a stereocomplex crystal and having excellent moldability, a high molecular weight, high crystallinity and a high melting point and a process for manufacturing the same. It is another object of the present invention to provide a composition comprising the polylactic acid and a molded product of the polylactic acid. The present invention is characterized from polylactic acid having a weight average molecular weight of 80,000 to 500,000 and a melting peak at 195° C. or higher which accounts for 80% or more of the total of melting peaks in the temperature elevation step when measured by a differential scanning calorimeter (DSC) and a process for manufacturing the same.