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:
Oct. 13, 2015
Filed:
Jul. 27, 2009
Daisuke Itoh, Tokyo, JP;
Naoko Tohmiya, Tokyo, JP;
Daisuke Itoh, Tokyo, JP;
Naoko Tohmiya, Tokyo, JP;
KUREHA CORPORATION, Tokyo, JP;
Abstract
To provide polyglycolic acid resin compositions having excellent moldability, and high barrier properties and transparency after molding, and molded articles therefrom. According to the present invention, a polylactic acid having a mass average molecular weight Mw of 100000 to 1000000 is added to a polyglycolic acid having a mass average molecular weight Mw of 100000 to 1000000 in a content of the polylactic acid of 5 to 30% by mass, and the mixture is melt-kneaded under, for example, a temperature condition of 230 to 270° C., thereby obtaining a resin composition having a temperature-lowering crystallization peak temperature Tc, measured by differential scanning calorimetry, of 3 to 18° C. lower than that of a polyglycolic acid only.