Check patentability & draft patents in minutes with Patsnap Eureka AI!

Oxygen scavengers with reduced oxidation products for use in plastic films and beverage and food containers

A technology of oxygen scavenger and compound, applied in the field of rigid polymer food or beverage container, oxygen scavenger for plastic film, oxygen scavenging packaging material, and oxygen scavenging composition, can solve the problem of weakening the physical integrity of multilayer container structure , bad smell and/or taste, uncontrolled oxidative splitting of chain scission, etc.

Inactive Publication Date: 2001-06-27
科里奥瓦克公司 +1
View PDF21 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of these oxidizable substances have the disadvantage of imparting an unpleasant odor and / or taste to the packaged substance because by-products are emitted during the oxidation of the oxidizable substance
Another problem is the uncontrolled oxidative fragmentation of the polymer backbone leading to chain scission, thus weakening the physical integrity of the multilayer container structure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Oxygen scavengers with reduced oxidation products for use in plastic films and beverage and food containers
  • Oxygen scavengers with reduced oxidation products for use in plastic films and beverage and food containers
  • Oxygen scavengers with reduced oxidation products for use in plastic films and beverage and food containers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0319] Preferred embodiments of the present invention include polymers and oligomers containing cyclohexene groups that are readily accessible to free oxygen molecules. These polymers or oligomers can be prepared from any of a number of methods, although a preferred reaction involves 1,2,3,6-tetrahydrophthalic anhydride. The anhydride is a low-cost monomer derived from butadiene, which makes it particularly attractive on an industrial scale. The anhydrides can be used to make polyester resins such as by reaction with diols. It can also react with hydroxyl or polyol compounds to produce half-esters suitable for subsequent use in the manufacture of plastic films and materials.

Embodiment 2

[0321] Non-aromatic alkenyl benzyl alcohols such as tetrahydrobenzyl alcohol can also react with certain compounds to produce useful scavengers. For example tetrahydrobenzyl alcohol can be reacted with compounds containing carboxylic acid, acid halide, ester, anhydride and / or isocyanate functional groups. These compounds can be small molecules or oligomers or polymers. For example, tetrahydrobenzyl alcohol can be reacted with styrene / maleic anhydride copolymers or with polyfunctional isocyanates.

Embodiment 3

[0323] Cyclohexene dimethanol compounds can be used to prepare oxygen-absorbing polyesters and polyurethanes.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
wavelengthaaaaaaaaaa
Login to View More

Abstract

An oxygen scavenger composition, for use in or with plastics materials, includes a polymer or oligomer having at least one cyclohexene group or functionality. The composition produces only low levels of volatile or (extractable from a plastics material in which it is incorporated) products as a consequence of oxygen scavenging. A family of polymers containing selected cyclic allylic pendent groups for oxygen scavenging packaging which has minimal organoleptic by-products after oxidation. Multilayer plastic containers for food and beverage packaging which incorporate oxygen scavenging resins which selectively oxidize upon activation without giving off odorous fragments.

Description

Field of the invention [0001] The invention relates to oxygen scavengers for plastics and especially for plastic films. The emphasis is on scavengers that produce low or negligible levels of oxidation by-products that contaminate the headspace of the package. The present invention also relates to compositions for scavenging oxygen from environments containing oxygen sensitive products, especially food and beverage products. More specifically, the oxygen scavenging composition comprises a polymer containing ethylenic unsaturation in the cyclic moiety, a transition metal compound and optionally a photoinitiator. The invention also relates to compositions for use in fields such as food packaging which have a minimal impact on the odor and taste of the packaged contents. The present invention preferably uses ethylene / acrylate copolymers modified with selected cyclic allyl pendant groups for oxygen scavenging packaging materials. The invention also relates to rigid polymeric foo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B65D1/00B32B27/18B65D85/50C08F8/00C08K5/00C08K5/09C08L101/02
CPCC08K5/0008C08F2810/30C08F8/00C08F2810/50C08F2800/20C08F8/14C08F8/28C08F222/06C08F210/14C08F210/02C08F16/06C08F255/02
Inventor 荆大彦蔡钢峰C·迪普里M·S·加兰德J·L·古德里奇J·P·莱昂纳德A·玛苏斯K·W·鲁塞尔杨虎
Owner 科里奥瓦克公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com