Disclosed is polymer dispersion obtainable by free radical polymerization reaction of hemicellulose with one or more ethylenically unsaturated monomers. Also disclosed are coated paper products wherein the coating is prepared using the polymer dispersion and use of the polymer dispersion as a size and coating of a paper, paperboard, and the like.

A polyelectrolyte hydrogel coating with strong substrate binding performance and a method of manufacturing the same are provided. The method includes: 1) activating a substrate by applying oxygen plasma; and 2) dissolving a polycationic polymer, a polymeric monomer, a silane coupling agent and an initiator to obtain a precursor solution, vacuumizing the precursor solution to remove air bubbles, applying the vacuumized precursor solution to a surface of the substrate activated by the oxygen plasma, and performing an in-situ polymerization and curing process under nitrogen or rare gas atmosphere. The polymeric monomer includes at least one of: acrylamide, acrylic acid, hydroxyethyl methacrylamide, 2-acrylamido-2-methyl-1-propanesulfonic acid, polyethylene glycol (diol) diacrylate, 2-methacryloxyethylphosphocholine, 3-[[2-(Methacryloyloxy)ethyl]dimethylammonio]propane-1-sulfonate, and 3-[[2-(methacryloyloxy)ethyl]dimethylammonium] propionate. The silane coupling agent has a carbon-carbon double bond functional group.

The present invention relates to packaging material comprising a plastic substrate comprising at least one surface, and a barrier layer for hydrophobic substances, wherein the barrier layer is in contact with the at least one surface of the plastic substrate, wherein the barrier layer comprises a copolymer, a surface-reacted calcium carbonate, and a mineral material selected from natural ground calcium carbonate and/or precipitated calcium carbonate, as well as a method for producing the same and its use.

The present invention relates to packaging material comprising a plastic substrate comprising at least one surface, and a barrier layer for hydrophobic substances, wherein the barrier layer is in contact with the at least one surface of the plastic substrate, wherein the barrier layer comprises a copolymer, a surface-reacted calcium carbonate, and a mineral material selected from natural ground calcium carbonate and/or precipitated calcium carbonate, as well as a method for producing the same and its use.

A water-based barrier coating composition suitable for use as a barrier coating is disclosed which includes an aqueous polymer composition obtainable by free radical (co)polymerizing an ethylenically unsaturated monomer blend having an optionally substituted styrene, at least one C1-C4-alkyl (meth)acrylate, other ethylenically unsaturated copolymerizable monomers, degraded starch polyvinyl alcohol (PVA), a plasticizer; a composition having C16-C18 alkenyl ketene dimer, optionally as a mixture with rosin, of a gelling agent; and optionally a filler.

A water-based barrier coating composition suitable for use as a barrier coating is disclosed which includes an aqueous polymer composition obtainable by free radical (co)polymerizing an ethylenically unsaturated monomer blend having an optionally substituted styrene, at least one C1-C4-alkyl (meth)acrylate, other ethylenically unsaturated copolymerizable monomers, degraded starch polyvinyl alcohol (PVA), a plasticizer; a composition having C16-C18 alkenyl ketene dimer, optionally as a mixture with rosin, of a gelling agent; and optionally a filler.

A water-based barrier coating composition suitable for use as a barrier coating is disclosed which includes an aqueous polymer composition obtainable by free radical (co)polymerizing an ethylenically unsaturated monomer blend having an optionally substituted styrene, at least one C1-C4-alkyl (meth)acrylate, other ethylenically unsaturated copolymerizable monomers, degraded starch polyvinyl alcohol (PVA), a plasticizer; a composition having C16-C18 alkenyl ketene dimer, optionally as a mixture with rosin, of a gelling agent; and optionally a filler.

The present invention relates to packaging material comprising a plastic substrate comprising at least one surface, and a barrier layer for hydrophobic substances, wherein the barrier layer is in contact with the at least one surface of the plastic substrate, wherein the barrier layer comprises a copolymer, a surface-reacted calcium carbonate, and a mineral material selected from natural ground calcium carbonate and/or precipitated calcium carbonate, as well as a method for producing the same and its use.

The present invention relates to packaging material comprising a plastic substrate comprising at least one surface, and a barrier layer for hydrophobic substances, wherein the barrier layer is in contact with the at least one surface of the plastic substrate, wherein the barrier layer comprises a copolymer, a surface-reacted calcium carbonate, and a mineral material selected from natural ground calcium carbonate and/or precipitated calcium carbonate, as well as a method for producing the same and its use.

The invention relates to an aqueous polymer dispersion having a viscosity of 150 m Pas at 40% solids content and comprising polymer particles having a particle size D50 less than 85 nm. The polymer dispersion is obtainable by free radical emulsion copolymerisation of at least monomer (a) and monomer (b), where monomer (a) is at least one optionally substituted styrene and monomer (b) is at least one C1-C4-alkyl (meth)acrylate, in a reaction mixture comprising degraded starch which has an average molecular weight Mn<1000 g/mol. The invention relates also to the use of the polymer dispersion and method for preparing it.