US 9,428,607 B2 · Polylactic acid-polyalkylene glycol copolymer with fast crystallization rate and composition comprising the same

Abstract

The provided are a polylactic acid-polyalkylene glycol copolymer and a composition comprising the same which have excellent crystallization rate, wherein the polylactic acid-polyalkylene glycol copolymer is prepared by melt-reacting polylactic acid with polyalkylene glycol of which one end group is substituted with a functional group and has improved eco-friendliness, injection moldability, and excellent heat resistance which makes it to be suitably applied to various molded articles requiring great heat resistance, such as disposables, kitchen utensils and containers, electric-electronic parts and automobile parts.

Claims9

Dependent claims

A polylactic acid-polyalkylene glycol copolymer, wherein said polylactic acid-polyalkylene glycol copolymer is prepared by melt-reacting polylactic acid with a polyalkylene glycol of Formula 1,

wherein, R1 is an amine, an isocyanate, a carbodiimide, or an aziridine;
R2 is hydrogen, a C1-C8 alkyl or alkenyl group, or a C6-C8 aryl group;
R3 is a C1-C8 alkyl or alkenyl group, or a C6-C8 aryl group;
1 is an integer from 0-200;
and m is an integer from 0-200;
wherein said polylactic acid-polyalkylene glycol copolymer comprises 0.05-25.0 weight percent (wt %) of said polyalkylene glycol of Formula 1, and has a heat deformation temperature of 70° C. or more.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/043,709Filed 1 Oct 2013

Priority

KR 10-2012-01100294 Oct 2012

Published

US 2014/0100318 A110 Apr 2014

Granted

30 Aug 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

C08G 63/668
Polyesters containing oxygen in the form of ether groups: derived from polycarboxylic acids and polyhydroxy compounds
C08G 81/00
Macromolecular compounds obtained by interreacting polymers in the absence of monomers
C08K 3/346
Silicon-containing compounds: clay
C08K 5/0083
Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59: nucleating agents promoting the crystallisation of…

Polylactic acid-polyalkylene glycol copolymer with fast crystallization rate and composition comprising the same

Life of this patent

Polylactic acid-polyalkylene glycol copolymer with fast crystallization rate and composition comprising the same

Life of this patent

Abstract

Claims9