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US 8,796,362 B2Granted
Cellulose based polymer material
AssigneeCarlsberg A/S
InventorsMorten Meldal, Renil Manat
Life of this patent
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Abstract
The invention relates to a polymer material with several advantageous properties. The polymer material has a low degree of swelling in water, it is biodegradable, it has extremely low permeability to gasses such as CO2 and it has a high strength. The polymer material is useful for a number of purposes, such as for preparing containers for food or beverages. The polymer material is prepared from a prepolymerization mixture comprising grafted plant derived material and monomers and/or cross-linkers.
Claims22
A polymer material which is a copolymer polymerised at least from:
- a) at least one filler material, wherein the filler material is provided in the form of small particles, wherein the average longest cross section of the particles is in the range of 0.1 to 750 μm, and wherein said filler material is provided in the form of a powder, said filler material comprising finely ground barley straw covalently —O-linked to
- wherein R1 and R2 independently are selected from the group consisting of —H, C1-6 alkyl, C1-6 alcohols, C1-6 alkoxy, C1-6 ethers, halogen and C1-6 alkyl substituted with halogen, wherein said filler comprises a polymer covalently linked to —OH or a long chain alcohol comprising at least 10 carbon atoms;
- and
- b) at least one monomer and/or at least one cross-linker, wherein
- i) the monomer is a monomer of the general structure
- or the general structure
- wherein R1 and R2 independently are selected from the group consisting of —H, C1-6 alkyl, C1-6 alcohols, C1-6 alkoxy, C1-6 ethers, halogen and C1-6 alkyl substituted with halogen and R3 is selected from the group consisting of linear and branched alkyl, alkenyl, alkoxy, ethers, aliphatic ring optionally comprising heteroatoms, alcohols, halogen, alkyl substituted with halogen and —H and
- wherein
- ii) the cross-linker is a sugar moiety covalently O-linked to at least two
- groups,
- wherein R1 and R2 independently are selected from the group consisting of —H and C1-6 alkyl,
- and wherein said two groups may be identical or different;
- and
- c) optionally, at least one plant fiber material, which is covalently —O-linked to
- wherein R1 and R2 independently are selected from the group consisting of —H, C1-6 alkyl, C1-6 alcohols, C1-6 alkoxy, C1-6 ethers, C1-6 alkenyl, halogen and C1-6 alkyl substituted with halogen.
12 more elements
A polymer material which is a copolymer polymerised at least from:
- a) at least one filler material with an average particle size of at the most 750 μm, wherein the filler material is provided in the form of a powder, said filler material comprising finely ground plant material covalently —O-linked to
- wherein R1 and R2 independently are selected from the group consisting of —H, C1-6 alkyl, C1-6 alcohols, C1-6 alkoxy, C1-6 ethers, halogen and C1-6 alkyl substituted with halogen, wherein said filler comprises a polymer covalently linked to —OH or a long chain alcohol comprising at least 10 carbon atoms;
- and
- b) at least one monomer and at least one cross-linker, wherein
- i) the monomer is a monomer of the general structure
- wherein R1 and R2 independently are selected from the group consisting of —H, C1-6 alkyl, C1-6 alcohols, C1-6 alkoxy, C1-6 ethers, halogen and C1-6 alkyl substituted with halogen and R3 is selected from the group consisting of linear and branched alkyl, alkenyl, alkoxy, ethers, aliphatic ring optionally comprising heteroatoms, alcohols, halogen, alkyl substituted with halogen and —H and
- ii) the cross-linker is a mono-saccharide or a disaccharide covalently O-linked to at least two
- groups,
- wherein R1 and R2 independently are selected from the group consisting of —H and C1-6 alkyl,
- and wherein said at least two groups may be identical or different;
- and
- c) optionally at least one plant fiber material, which is covalently —O-linked to
- wherein R1 and R2 independently are selected from the group consisting of —H, C1-6 alkyl, C1-6 alcohols, C1-6 alkoxy, C1-6 ethers, halogen and C1-6 alkyl substituted with halogen.
10 more elements
Dependencies are inferred from the claim text.