POLYLACTIC ACID RESIN, PREPARATION METHOD THEREOF, AND PACKAGING FILM COMPRISING SAME

Title:

POLYLACTIC ACID RESIN, PREPARATION METHOD THEREOF, AND PACKAGING FILM COMPRISING SAME

Document Type and Number:

WIPO Patent Application WO/2012/064043

Kind Code:

A2

Abstract:

The present invention relates to a polylactic acid resin and a packaging film comprising the same, wherein the polylactic acid resin is useful as a packaging material due to excellent properties including heat resistance as well as optimized flexibility. The polylactic acid resin comprises: a hard segment including a predetermined polylactic acid repeating unit; and a soft segment including a polyurethane polyol repeating unit in which certain polyether-based polyol repeating units are linearly connected in a medium of a urethane bond. In addition, the polylactic acid resin has a glass transition temperature (Tg) of 25-55℃.

Inventors:

YOO YOUNG-MAN (KR)
LEE TAE-WOONG (KR)
LEE KYE-YUNE (KR)
CHUNG JAE-IL (KR)

Application Number:

PCT/KR2011/008307

Publication Date:

May 18, 2012

Filing Date:

November 02, 2011

Export Citation:

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Assignee:

SK CHEMICALS CO LTD (KR)
YOO YOUNG-MAN (KR)
LEE TAE-WOONG (KR)
LEE KYE-YUNE (KR)
CHUNG JAE-IL (KR)

International Classes:

C08G63/08; B65D65/02; C08G18/48; C08G63/78; C08L67/04

Domestic Patent References:

WO2010053167A1	2010-05-14
WO2010053065A1	2010-05-14

Foreign References:

KR20100110547A	2010-10-13
KR20100111766A	2010-10-18
KR20100111767A	2010-10-18
KR20100130215A	2010-12-10
KR20100130216A	2010-12-10
KR20100130217A	2010-12-10
KR20100130218A	2010-12-10
KR20100130226A	2010-12-10

Other References: