Ethylene scavenging material suitable for use in packages

Patent metadata

Field	Value
Publication number	US-11459159-B2
Application number	US-201716316729-A
Country	US
Kind code	B2
Filing date	Jul 3, 2017
Priority date	Jul 11, 2016
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

The present invention relates to a material suitable for use in packages comprising nano-sized cellulose and an ethylene scavenging or ethylene absorbing agent. The invention also relates to methods for manufacturing such material, which may be paper, label, paperboard, plastic or film products.

First claim

The invention claimed is:

1. A material suitable for use in packages comprising nano-sized cellulose and an ethylene scavenging and/or ethylene absorbing agent,
wherein the ethylene scavenging agent and/or ethylene absorbing agent is present in the form of a label on which a top coating is arranged and wherein the ethylene scavenging agent and/or ethylene absorbing agent can be exposed by an increase ii moisture or humidity which dissolves the top coating or by removal of the top coating covering the ethylene scavenging agent and/or ethylene absorbing agent.

2. A material suitable for use in packages according to claim 1 , wherein said material is or comprises a paper, label, film or paperboard or plastic product.

3. A material suitable for use in packages according to claim 1 , wherein the ethylene scavenging agent is a catalyst.

4. A material according to claim 1 , wherein the material is a coating or is printed on a surface.

5. A material according to claim 1 , wherein the ethylene scavenging agent and/or ethylene absorbing agent can be activated.

6. A material according to claim 1 , wherein the ethylene scavenging agent and/or ethylene absorbing agent can be exposed by an increase in moisture or humidity which dissolves a protective coating or by removal of a top coating covering the ethylene scavenging agent and/or ethylene absorbing agent.

7. A material according to claim 1 , wherein the nano-sized cellulose is microfibrillated cellulose.

8. A material suitable for use in packages according to claim 1 , wherein the ethylene scavenging agent is a platinum-containing catalyst or palladium-containing catalyst.

9. A material suitable for use in packages according to claim 1 , wherein the ethylene absorbing agent comprises charcoal, zeolites, silica, modified silica, aluminium oxide, al-silicates, sepolite, montmorillonite, bentonite, travertite or permutite, cristobalite, viscid ore, clay, coral, rape oil, carbon fiber, feldspathic porphyritic andesite, carbon nanoparticle, vermiculite, germanium, attapulgite, graphite, humus, pearlite, brickblock, tobermorite, and organic resins.

10. A material suitable for use in packages according to claim 1 , wherein the ethylene scavenging agent comprises potassium permanganate, iodic acid or potassium bromate on charcoal, potassium bromate and sulfuric acid, bromine liquids, silver oxide, rare earth oxide, phosphate compounds, chlorate compounds, ferrocyanin compounds, hypochlorite, hypochlorite salt and bromide or iodide salts, chlorate, a chlorite, a certain metal and a metallic oxide, K permanganate, ascorbic acid, sodium citrate and water, peroxide, sodium permanganate, periodic acid, calcium permanganate or potassium iodate, potassium peroxymanganate, tobermorite and silver, xonotlite and silver, Ferrous sulfate heptahydrate and calcium hydroxide, brominated carbonaceous molecular sieves, hydrogen bromide and bromine adduct of vinyl pyridine resin, bromine-added vinylquinoline-type resin, calcium hypochlorite, sodium hypochlorite, potassium hypochlorite, magnesium hypochlorite, ammonium molybdate containing palladium sulphate catalyst, electron-deficient diene or triene incorporated in an ethylene-permeable substrate, hydrophobic catalyst with Pt, high-molecular complex made by coordination of CuCl and AlCl 3 , Ti-, Al-, Ni or Fe-oxide, palladium compound adsorbed on carbon black, alumina and platinum, cyclodextrin and PEI, active carbon treated with palladium chloride, palladium doped ZSM-5, or a photosensitive agent.

11. A material suitable for use in packages according to claim 1 , wherein the material suitable for use in packages comprises greater than 30 wt % of the ethylene absorbing agent.

Assignees

• Stora Enso Oyj

Inventors

• Backfolk Kaj
• Heiskanen Isto
• Saukkonen Esa
• Lampainen Seppo
• Siitonen Simo
• Andersson Marianne

Classifications

• B01J20/24

  Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives · CPC title

• B01J20/28023

  Fibres or filaments (fibres or filaments in the form of membranes B01J20/28038; B01J20/28007 takes precedence) · CPC title

• B01J20/262

  obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g. obtained by polycondensation (macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds per se C08G) · CPC title

• B65D81/266 Primary

  for absorbing gases, e.g. oxygen absorbers or desiccants (B65D51/244, B65D51/30 take precedence) · CPC title

• B65D81/26

  with provision for draining away, or absorbing, {or removing by ventilation,} fluids, e.g. exuded by contents {(B65D33/01 takes precedence)}; Applications of corrosion inhibitors or desiccators · CPC title