US 2009/0191371 A1Published application

Article Comprising Poly(hydroxyalkanoic acid)

AssigneeE.I. du Pont de Nemours and Company

InventorJulius Uradnisheck

Life of this patent

Estimating the term…

Loading patent…

Abstract

Disclosed are oriented films comprising toughened poly(hydroxy-alkanoic acid) resin compositions comprising poly(hydroxyalkanoic acid) and an impact modifier comprising an ethylene copolymer made from monomers (a) ethylene; (b) one or more olefins of the formula CH2═C(R3)CO2R4, where R3 is hydrogen or an alkyl group with 1-6 carbon atoms, such as methyl, and R4 is glycidyl; and optionally (c) one or more olefins of the formula CH2═C(R1)CO2R2, where R1 is hydrogen or an alkyl group with 2-8 carbon atoms and R2 is an alkyl group with 1-8 carbon atoms, such as methyl, ethyl, or butyl. The ethylene copolymer may further be made from carbon monoxide monomers. The compositions may further comprise one or more ethylene/acrylate and/or ethylene/vinyl ester polymers, ionomers, and cationic grafting agents. Also disclosed are packaging materials and containers comprising the oriented films.

Claims20

Dependent claims

A film comprising or prepared from a composition comprising about 60 to about 99.8 weight % of poly(hydroxyalkanoic acid) and about 0.2 to about 40 weight % of an impact modifier wherein

the film is an oriented film;
and
the impact modifier comprises an ethylene copolymer that comprises repeat units derived from (a) about 20 to about 95 weight % ethylene, (b) about 0.5 to about 25 weight % of one or more first olefins of the formula CH2═C(R3)CO2R4;
(c) 0 to about 70 weight % of one or more second olefins of the formula CH2═C(R1)CO2R2, and (d) 0 to about 20 weight % carbon monoxide where R1 is hydrogen or an alkyl group with 1-8 carbon atoms, R2 is an alkyl group with 1-8 carbon atoms, where R3 is hydrogen or an alkyl group with 1-6 carbon atoms, R4 is glycidyl, the weight % of the poly(hydroxyalkanoic acid) and the impact modifier are based on the total weight of the poly(hydroxyalkanoic acid) and the impact modifier, and the weight % of ethylene, CH2═C(R1)CO2R2, or CH2═C(R3)CO2R4 is based on the copolymer weight.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 12/412,014Filed 26 Mar 2009
Priority: 12 Dec 2003
Published: 30 Jul 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification44 codes

C08L 67/04
Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain ; Compositions of derivatives of such polymers:…
B32B 7/12
Interconnection of layers: using interposed adhesives or interposed materials with bonding properties
B32B 15/08
Comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material: of synthetic resin
B32B 15/20
Layered products comprising a layer of metal: comprising aluminium or copper

Family

Application60/529,208Us provisional application · filed 12 Dec 2003
Application10/996,899Continuation in part · filed 23 Nov 2004
Application11/395,422Continuation in part · filed 31 Mar 2006
Application11/494,077Continuation in part · filed 27 Jul 2006
Application11/516,949Continuation in part · filed 7 Sep 2006
Application12/412,014Continuation in part
US 2005/0131120 A1Published application
US 2006/0173133 A1Published application
US 2007/0213466 A1Published application
US 2008/0027178 A1Published application
US 7,354,973 B2Related patent
US 7,381,772 B2Related patent
US 7,595,363 B2Related patent
US 7,834,092 B2Related patent
US 2009/0191371 A1This patent

From the US filing history. Foreign family members aren’t listed.