Polylactic acid stereocomplex resin composition having improved crystallization rate and method for molding the same

A technology of stereocomplex and resin composition, which is applied in the field of polylactic acid resin composition and molding, can solve the problems such as the method of applying processability of the resin composition that has not been proposed, and achieve the improvement of crystallization rate, impact strength, The effect of promoting moldability

Active Publication Date: 2014-12-24
LOTTE CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Further, Korean Patent Application Publication No. 2011-0067238 discloses a polylactic acid compound having improved compatibility and heat resistance, but does not propose a specific application of the resin composition and a method for improving processability

Method used

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  • Polylactic acid stereocomplex resin composition having improved crystallization rate and method for molding the same
  • Polylactic acid stereocomplex resin composition having improved crystallization rate and method for molding the same
  • Polylactic acid stereocomplex resin composition having improved crystallization rate and method for molding the same

Examples

Experimental program
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Effect test

Embodiment 1

[0073] Samples were molded using the same method as in Comparative Example 2, except that in Comparative Example 2 (A) about 81 wt% of poly-L-lactic acid resin, (B) about 9 wt% of poly-D-lactic acid resin, (C ) about 9wt% impact modifier and (D-1) about 1wt% talc nucleating agent were mixed.

Embodiment 2

[0075] Samples were molded using the same method as in Comparative Example 2, except that in Comparative Example 2 (A) about 78 wt% of poly L-lactic acid resin, (B) about 9 wt% of poly D-lactic acid resin, (C ) about 12wt% impact modifier and (D-1) about 1wt% talc nucleating agent were mixed.

Embodiment 3

[0077] Samples were molded using the same method as in Comparative Example 2, except that in Comparative Example 2 (A) about 74 wt% of poly L-lactic acid resin, (B) about 8 wt% of poly D-lactic acid resin, (C ) about 17wt% impact modifier and (D-1) about 1wt% talc nucleating agent were mixed.

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Abstract

The invenrion relates to a polylactic acid stereocomplex resin composition having the improved crystallization rate and a method for molding the same. Particularly, disclosed is a molding method for obtaining a polylactic acid stereocomplex resin composition solving a limitation according to application of a typical polylactic acid resin composition, including an environmentally-friendly material, and having excellent heat resistance and impact resistance. The present invention provides a polylactic acid stereocomplex resin composition including (A) about 40 to about 91.9 wt% of a crystalline poly L-lactic acid, (B) about 3 to about 50 wt% of a crystalline poly D-lactic acid, (C) about 5 to about 30 wt% of an impact modifier, and (D) about 0.1 to about 2 wt% of a nucleating agent, and a method for molding the same.

Description

[0001] Cross references to related patent applications [0002] This application claims the benefit of Korean Patent Application No. 10-2013-0070328 filed on June 19, 2013 at the Korean Intellectual Property Office, the entire disclosure of which is hereby incorporated by reference. technical field [0003] The present invention relates to a polylactic acid resin composition and a method of molding the same, and more particularly, to a polylactic acid resin composition having excellent crystallization rate and mechanical properties and a method of molding the same. Background technique [0004] Recently, a lot of efforts to reduce greenhouse gases have been made against global warming, and research and development of biodegradable polymer materials that degrade naturally have been devoted to as one of the efforts. For conventional polymers, petroleum resources are mainly used as basic raw materials, but there is a possibility of depletion in the future, and carbon dioxide ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L23/08C08K3/34C08K5/527
CPCC08K3/34C08K5/521C08L23/0884C08L51/04C08L67/04C08L2205/24B29K2067/046B29K2033/08B29K2995/006B29K2995/0041B29K2105/0088B29K2105/0085B29C45/0001B29C45/73B29C71/02
Inventor 金承赫李弦燮卢泰景
Owner LOTTE CHEM CORP
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