Use of protected N-hydroxyimide derivates and transition metal as oxygen scavenger system in transparent polyolefin films

Patent metadata

Field	Value
Publication number	US-9505541-B2
Application number	US-201514636490-A
Country	US
Kind code	B2
Filing date	Mar 3, 2015
Priority date	Dec 2, 2009
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

An oxygen-scavenging composition containing (I) a polymeric resin, (II) an organic oxidation additive based on a cyclic oxyimide, (III) a metal salt, preferably a transition metal salt, (IV) a sacrificial oxidizable substrate, and optionally, (V) an additional component; wherein components (I) and (IV) are different.

First claim

The invention claimed is:

1. A method for maintaining or reducing oxygen levels in packaged items, which method comprises including an oxygen-scavenging composition in the package, the composition comprising
(I) a polymeric resin,
(II) an organic oxidation additive that is:

(III) a metal salt,
(IV) a sacrificial oxidizable substrate,
and optionally,
(V) an additional component;
with the proviso that components (I) and (IV) are different.

2. The method of claim 1 , wherein
component (II) is present in an amount of 0.001-10 wt %, based on the polymeric resin,
component (III) is present in an amount of 0.001-10 wt %, based on the polymeric resin,
component (IV) is present in an amount of 0.001-10 wt %, based on the polymeric resin,
and optionally, component (V) is present in an amount of 0.001-10 wt %, based on the polymeric resin.

3. The method of claim 1 , wherein the polymeric resin is a thermoplastic polymer selected from the group consisting of a homopolymer of an olefin monomer, a copolymers of a olefin monomer, a copolymer of an olefin monomer with a diolefin monomer, a cyclic olefin, a copolymer of one or more 1-olefins or diolefins with carbon monoxide, a copolymer of one or more 1-olefins and diolefins with carbon monoxide and polyvinyl alcohol.

4. The method of claim 1 , wherein the metal salt is a Co, Ce, Mn, Cu, Ni, or Vd salt.

5. The method of claim 1 , wherein the sacrificial oxidizable substrate is selected from the group consisting of polybutadiene, polyester, squalane, squalene, polystyrene, poly-limonene, poly alpha pinene, poly beta pinene, polynorbornene, polylactic acid and a mixture of linear and branched alkyl chain C 6 -C 30 alcohols.

6. The method of claim 1 , wherein the sacrificial oxidizable substrate is a polyterpenic resin.

7. The method of claim 1 , wherein the oxygen-scavenging composition further comprises one or more additional components selected from the group consisting of a filler, a reinforcing agent, a pigment, a light stabilizer, an antioxidant, an antislip additive, an antblock additive, a plasticizer, an optical brightener, an antistatic agent and a blowing agent.

8. The method of claim 1 , wherein the packaged item is a food packaging.

Assignees

• Basf Se

Inventors

• Menozzi Edoardo
• Sala Massimiliano
• Galfre Enrico

Classifications

• C08K5/42

  Sulfonic acids; Derivatives thereof · CPC title

• C08K5/3417

  condensed with carbocyclic rings · CPC title

• C08K5/3437

  condensed with carbocyclic rings · CPC title

• C08L101/00

  Compositions of unspecified macromolecular compounds · CPC title

• C08K2201/012

  Additives improving oxygen scavenging properties · CPC title